Inflation Indexing « Construction Analytics

Construction Inflation 2025 Update Nov

November 13, 2025 9:53 am / Leave a comment

Please refer to Construction Inflation & PPI 2025 updated 10-17-25 for extended discussion of inflation, how and when to apply, historical indices, PPI Data and Tables. Also see Construction Briefs Sept 2025 for August PPI data. No PPI data has been updated since Aug data issued in Sept.

We are still missing a lot of information. It was expected that much of the tariff costs would show up in Q3, or even Q4, so these costs are more likely to go up than down. But we can’t see those changes in cost. However, there are no shortage of reports of cost pressures. It’s much more than just tariffs.

Turner Nonres Bldgs Index is up 3.5% ytd for Q3, up 1.1%-1.2% each quarter.

Rider Levitt Bucknall Nonres Bldg Index for Q3 is up 3.3%, up 1.0%-1.1% each quarter.

Mortenson Nonres Bldgs Index is up 6.3% for 9 months.

Census New Single Family Home Index is up 3.9% YTD for 8 months thru Aug.

RS Means Nonres Bldgs Index is up 3.4% for 9 months, w/o margins.

The Producer Price Index for construction materials shows these items up greater than 4% ytd as of Aug: Concrete pipe, Paving Mixtures, Lumber/Plywood, all copper and aluminum wire and shapes.

30-year average inflation rate for residential and nonresidential buildings is 4.1%. But when excluding deflation in recession years 2008-2010, for nonresidential buildings the long-term average is 4.7% and for residential it’s 4.9%.

For Non-bldg Infrastructure the 30-year average is 3.6%. When excluding deflation in the recession years 2008-2010, Non-bldg long-term average inflation is 3.9%.

All of these long term averages went up in recent years because, instead of including 1991-1994 at 2%/yr, we are now including 2021-2024 at 7%-8%/yr. All long term and short term inflation rates went up.

Since 2011, Nonres Bldgs inflation is 4.8%, Residential is 5.4% and Non-bldg is 4.3%.

The forecast values carried in the following tables reflect trades and firms currently posted Q3 inflation trackers, using an assumption that rates tend to follow the current pattern and with no reasoning to assume a Q3/Q4 price decline.

Construction Briefs Aug 2025

August 4, 2025 7:53 am / Leave a comment

The biggest story in construction data right now is jobs.

Average construction jobs growth through July, last 25 years, excluding recessions, +130,000.

Average construction jobs growth through July, last 10 years, excluding recessions, +140,000.

2025 Construction Jobs growth through July, +21,000.

Not so surprising, as the Constant $ construction spending through July is down -5.7%, (compared to same months previous year), steepest decline since 2011, which was the end of the great recession. Constant $ (inflation adjusted) construction spending is now back to early 2022 level.

Construction Spending is down 5 of the last 6mo, now down a total -3.0% from Dec. Over that period spending is down most significantly in Residential, Manufacturing and Commercial w/o Warehouse. It’s up the most in Data Centers, Highway and Public Utilities. Overall, business is declining.

Construction Spending inflation adjusted is forecast to drop slightly every month for the rest of the year. Expect constant $ spending at year end down -6.3% from 2024. Uncertainty over tariffs and funding subsidies has slowed decision making on planning and moving new projects forward to construction. This is not an environment to expect jobs growth.

If jobs were to move at the same rate as business volume, with 2025 construction spending in constant$ expected to fall -6.3%, then jobs would be expected to fall -6.3%. That’s 500,000 jobs. The only times we’ve ever lost 500,000 jobs in a year was in both 2009 and 2010. In those years, after falling 17% in the previous 3 years, business volume dropped another 12% and 10% respectively.

Residential construction jobs peaked last September and are now down 1% or 35,000 jobs since then. In Constant $, residential spending is down 10% since last September. Jobs never move at the same rate as spending. This has a significant impact on productivity.

Data Centers are the bright spot in construction spending, up 17% since December and forecast to finish the year up 30%, an increase of +$10bil.

Biggest forecast declines in Current$ construction spending: Residential -5.8% (by far largest $ decline, -$55bil); Manufacturing – 6.5%, -$15bil; Warehouse -10%, -$7bil; Office (ex Data Centers) -10%, -$7bil; Comm Retail (ex Warehouse) -8%, -$6bil.

Manufacturing spending is now receding from an astronomical high. From 2019 through 2021 spending was averaging $80bil/yr. In 2024 it reached an average of $235bil, and peaked in Oct at $244bil. In June it was only $223bil and it’s expected forecast for 2025 is down -6.5% from 2024, but that is still a very high $220bil.

Read The Manufacturing Spending Taper

Presentation Recorded 5-25 Advancing Precon (inflation data only)

July 14, 2025 12:10 pm / Leave a comment

EdZ 2025 SHORT Economic Forecast as SHOW Download

Even though this file is shortened from the full presentation it is still over 800MB. It’s too large to transfer by email and the full presentation is too large to upload here. May take 20 minutes to download.

Comprehensive Construction Inflation 2025 text and graphics post on this blog Construction Inflation 2025 PPI updated 5-15

Tariffs Create Unknown Costs to Construction

February 27, 2025 9:15 am / Leave a comment

Assessing the impact of tariffs on the cost of construction accurately has now become a nearly impossible task. Tariffs can be on PARTS used in the manufacture of goods. Who (architect?, engineer?) will identify which parts included in which products used in the building are subject to tariff? Is only 10% of the whole product subject to tariff?

For example, look at something simple like light fixtures. The shell, the ballast, the reflector, the shade, the lamps or the wiring could be made in China. Who’s job will it be to identify where parts are made? How much is the cost of the part in question? Who now estimates the share of tariff increase on those parts to determine tariff impact on cost of manufacturing the entire light fixture?

Expand that issue to a pump assembly with valves and pressure gauges. Who identifies which parts in the pump assembly come from what country? How does an estimator determine the cost of manufacturing the pumps, valves and gauges and determine what fraction of total cost has a tariff?

This will inevitably lead to inflation, but it will be hidden inflation, hard to determine if a manufacturer’s price increase for a product is substantiated. This is not like the tariff on mill steel, a 25% tariff on mill steel which represents 25% of final structural steel bid, which represents 10% of the building cost.

At the conceptual or schematic design phase of construction, all the products are not even identified. And the project start date might be a year or two years out. It can’t possibly be determined with certainty what factor should be carried to cover cost increases due to tariffs.

Inflation factors and contingency factors will need to increase to cover known unknown costs. This increases the share of the budget that is unidentified, always a contentious issue with owners. Then instead, identify the known tariffs, but the unknown value of end-cost, and carry as an allowance. Frankly with the margins general contractors or construction managers get for services on a large construction project, these unknown factors, if understated in cost factors or left unaddressed, could wipe out the total fee or profit for the job.

This is not a good position to be in, but I don’t yet see how it would be any different.

PS Here we are in Feb. 2025. I wrote this six years ago. https://edzarenski.com/2019/08/01/next-level-of-tariffs-will-be-unknowns/

Construction Inflation & PPI 2025 updated 10-17-25

February 21, 2025 3:25 pm / 1 Comment on Construction Inflation & PPI 2025 updated 10-17-25

11-13-25 See new post Construction Inflation 2025 Update Nov. for all new index tables and plots update dates vary from July, Aug to Q3.

10-17-25 Residential Index reduced and minor reduction in Nonres Bldgs Index, see notes in Construction Analytics Building Cost Indices and Reference Indices. The tables and plots included data only thru July.

9-3-25 Updated PPI tables and plots to JULY data issued 8-15-25.

5-15-25 all ppi DATA UPDATED TO APR

2-21-25 All new data updated to Q4. A major change with this new data / plots, is the change in the base date from 2019 to 2024. These index tables / data cannot be mixed with prior issues. Now using base 2024 = 100 in all data / plots included here. Percents yr/yr or mo/mo don’t change, the indexes change.

To properly adjust the cost of construction over time you must use an Actual Final Cost Inflation Index, otherwise called a selling price index. General construction cost indices and Input price indices that don’t track whole building final cost do not capture the full cost of escalation in construction projects.

Spending Must Be Adjusted by Inflation

Usually, construction budgets are prepared from known “current” costs. If a budget is being developed for a project whose midpoint of construction costs is two years in the future, you must carry in your budget an appropriate inflation factor to represent the expected cost of the building at that time. Why the midpoint? Because half the project cost occurs prior to that point and half occurs later than that. Actually, the midpoint of spending is 50-60% into the schedule, but the calculation to the midpoint of schedule is close. So, the average inflation for the project includes early contracts that have less inflation than average and also later contracts that would have more than the average inflation. Construction inflation should always be calculated from current cost to midpoint of construction, or in the case of using historical data and converting an older actual cost to a future budget, from midpoint to midpoint.

Any time a construction project is delayed or put on hold to start at some future date, construction cost inflation must be calculated and added to the previous budget to account for the unanticipated cost increase due to the delay. Of utmost importance is using appropriate cost indices and forecasting future cost growth to account for the difference in original budget and revised budget.

Besides the estimator’s need to accurately reflect future expected cost, inflation is an important aspect of the company business plan. Typically discussed in tandem with spending, inflation has an impact on tracking and forecasting company growth. All spending includes inflation, but inflation adds nothing except $ signs to the overall growth. For example, in a year when company revenues (spending) increase by 10%, if inflation is 6%, then total business growth is only 4%. To accurately calculate growth, and the need for labor to support that growth, spending must be adjusted by the amount of inflation.

Since 2011, Nonres Bldgs inflation is 4.8%, Residential is 5.4% and Non-bldg is 3.9%. But those averages include the unusually high inflation years of 2021 and 2022. Without those two years, since 2011, average inflation for Nonres Bldgs is 3.8%, Residential is 3.8% and Non-bldg is 2.4%.

2025 Inflation Forecast, Nonres Bldgs +4.0%, Residential +4.7% and Non-bldg +4.0%.

5-15-25 2025 Inflation Forecast, Nonres Bldgs +4.4%, Residential +5.0% and Non-bldg +4.3%.

Types of Construction Inflation Indices

General construction cost indices and Input price indices that don’t track whole building final cost do not capture the full cost of inflation on construction projects.

Consumer Price Index (CPI), tracks changes in the prices paid by consumers for a representative basket of goods and services, including food, transportation, medical care, apparel, recreation, housing. The CPI index in not related at all to construction and should not be used to adjust construction pricing.

Producer Price Index (PPI) for Construction Inputs is an example of a commonly referenced construction cost index that does not represent whole building costs. The PPI tracks material cost inputs at the producer level, not prices or bids at the as-built level.

Engineering News Record Building Cost Index (ENRBCI) and RSMeans Cost Index are examples of commonly used indices that DO NOT represent whole building costs yet are widely referenced by construction firms and estimators everywhere to adjust project costs. Neither includes contractor margins.

It should be noted, there are far fewer available resources for residential inflation than for nonresidential inflation.

One of the best predictors of construction inflation is the level of activity in an area. When the activity level is low, contractors are all competing for a smaller amount of work and therefore they may reduce bids. When activity is high, there is a greater opportunity to bid on more work and bids can be higher. The level of activity has a direct impact on inflation.

To properly adjust the total cost of construction over time you must use actual final cost indices, otherwise known as selling price indices.

Selling Price is whole building actual final cost. Selling price indices track the final cost of construction, which includes, in addition to costs of labor and materials and sales/use taxes, general contractor and sub-contractor margins or overhead and profit.

Construction Analytics Building Cost Index, Turner Building Cost Index, Rider Levett Bucknall Cost Index and Mortenson Cost Index are all examples of whole building cost indices that measure final selling price (for nonresidential buildings only).

Residential inflation indices are primarily single-family homes but would also be relevant for low-rise two to three story building types. Hi-rise residential work is more closely related to nonresidential building cost indices.

Producer Price Index (PPI) Final Demand Indices are an example of construction cost indices that represent whole building costs. Final Demand PPI, or Selling Price, represents contractors bid price to client. Includes labor, material, equipment, overhead and profit. Labor includes change in wages and productivity.

PPI Final Demand Indices should not be referenced monthly. These are quarterly indices. Every three months (Jan, Apr, Jul, Oct) BLS performs an update survey to correct the PPI Final Demand indices. For more than two years, in most quarters, about 80% to 90% of the change in the index for the quarter was posted in the update month. In some quarters, growth is flipped from negative to positive. And still in other quarters the correction month doubles or halves the rate of growth. There is no way to determine how much occurred in the update month or a previous month, but the update # along with the two previous months will get too the correct end-of-qtr index.

January is an update month. PPI Final Demand for Jan index basically includes the correction for Nov and Dec. Therefore, the index should NOT be compared mo/mo. There is only one of three months that the index is known for certain to be accurate, the update month. Compare qtr/qtr, but make sure to use the defined months, the correct update month with two previous months. For ex., (Jan+Dec+Nov) / (Oct+Sep+Aug). Those are the defined quarters. (I don’t make the rules).

Refer to National Inflation Indices for comparison to several national selling price indices or various Input indices. National reference indices are useful for comparison. Few firms project index values out past the current year, therefore all future projections in these tables are by Construction Analytics.

Construction Inflation History

Post Great Recession, 2011-2020, average inflation rates:

Nonresidential buildings inflation 10-year average (2011-2020) is 3.7%. In 2020 it dropped to 2.5%, but for the six years 2014-2019 it averaged 4.4%. In 2021 it jumped to 8%, the highest since 2006-2007. In 2022 it hit 12.8%, the highest since 1980-81.

Residential 8-year average inflation for 2013-2020 is 5.0%. In 2020 it was 4.5%. In 2021 it jumped to 14% and then in 2022 reached 15.8%. the highest on record.

30-year average inflation rate for residential and nonresidential buildings is 4.1%. But when excluding deflation in recession years 2008-2010, for nonresidential buildings the long-term average is 4.7% and for residential is 4.9%.

For Non-bldg Infrastructure the 30-year average is 3.6%. When excluding deflation in the recession years 2008-2010, Non-bldg long-term average inflation is 3.9%.

All of these long term averages went up in recent years because instead of including 1991-1994, at 2%/yr, we are now including 2021-2024, at 7%/yr to 8%/yr. All long term and short term inflation rates went up.

Since 2011, Nonres Bldgs inflation is 4.8%, Residential is 5.4% and Non-bldg is 4.3%.

Long-term construction cost inflation is normally about double consumer price index (CPI).
In times of high construction spending growth, nonresidential construction annual inflation averages about 8%. Residential has gone as high as 10%.
Nonresidential buildings inflation (prior to 2021-2022) averaged 3.7% since the recession bottom in 2011. Six-year 2014-2019 average is 4.4%.
Residential buildings inflation (prior to 2021-2022) reached a post-recession high of 8.0% in 2013 but dropped to 3.5% in 2015. It has averaged 5.3% for 8 years 2013-2020.
Although inflation is affected by labor and material costs, a large part of the change in inflation is due to change in contractors’ and suppliers’ margins.
When construction volume increases rapidly, margins increase rapidly.
Deflation is not likely. Only twice in 50 years have we experienced construction cost deflation, the recession years of 2009 and 2010. That was at a time when business volume went down 33% and jobs were down 30%.

Historically, when spending decreases or remains level for the year, inflation rarely (only 10% of the time) climbs above 3%. Avg inflation for all down/flat years is less than 1%. That did hold true in 2020 for both Nonres Bldgs and Non-bldg Infra. It also held true in 2023 for Residential. It did not hold true in 2021 or 2022. In 2021, spending was down for nonresidential buildings and flat for non-building. Inflation for both was over 8%.

Differences in Tracking Period

Be careful when referencing YTD growth. YTD can be the growth so far this year, that is, growth compared to December of the prior year, or it can be YTD currentyr/YTD lastyr. Neither represents the growth from the avg of the previous year, which becomes the historical value. Both are useful during the year to judge trends. The average growth for the year accounts for all the peaks and valleys within each year and and is the value carried forward into the index tables and charts.

Also, use caution when referencing Dec/Dec growth. An example of the difference between Dec/Dec tracking or year over year, and annual average tracking, is Steel Mill Products which was down 28.7% Dec22/Dec21, but the annual average for 2022 is still up 9.0% from the average 2021. In fact, the three years 20-21-22 show Dec/Dec combined inflation is +71%, but the annual averages for those same three years shows total inflation growth of 87%. Annual averages should be used to report inflation.

PPI Excludes Imports and Tariffs

When assessing or tracking the pricing effect of tariffs on construction materials, keep in mind that the Producer Price Index (PPI) does not include imports (imports are not produced in the US), so therefore, does not include tariffs. See items 4 and 24 in the FAQ provided by the Bureau of Labor Statistics. Construction PPI changes reflect pricing decisions domestic producers make on domestic products in reaction to tariffs on imported products. Tariffs have big impact on domestic prices.

BLS explanation of method and definitions

The price change we see in the PPI for construction materials reflects the domestic material prices of ALL other domestically produced materials used in the industry. While tariffs may affect only 10% of products used in the industry, the PPI shows us the domestic producers reaction applied to the other 90%.

For example: The 2018 steel tariffs of +25% applied only on imported steel, affected only 30% (the imported share) of steel used in US. However the PPI shows us that the cost of ALL DOMESTIC steel mill products (of all types) produced in the US increased avg 18% in 2018, after the steel tariffs were imposed. Prices of domestic steel receded somewhat, but the point is that tariffs caused a price increase also in domestic steel. The increase in PPI is domestic producers pricing response in reaction to tariffs. Tariffs impacted pricing decisions on all domestically produced products, not just the imported products. Consumers pay the price.

PPI Construction Materials Inputs Indices

See this post for August PPI update Construction Briefs Sept 2025

ALL PPI DATA TABLES UPDATED TO JUL 8-15-25

ALL PPI DATA UPDATED TO APR 5-15-25 PPI data INPUTS for the month of Apr: Paving Mixtures -9.5%, Steel Mill Products +5.8%, Steel Pipe & Tube +6.3%, Nonferrous Wire +3.7% YTD25/avg24: Concrete Pipe +8.5%, Paving Mixtures -8.5%, Lumber/Plywd +4.9%, Steel Mill Products +3.7%, Nonferrous Wire +3.5%, Diesel -10.8%. PPI data FINAL DEMAND Apr closes out Q1. Q1’25/Q4’24: Avg Nonres Bldgs +0.6%, School +0.4%, Healthcare +2.2% YTD25/avg24: Avg Nonres Bldgs +1.35%, School +1.4%, Office +1.6%, Healthcare +2.91%.

Inputs Table updated 2-15-25 Jan’25 Inputs are up, +0.8% to Nonres, +1.2% to Residential and 1.2% to Highway, the largest increases since Jan’24. The largest Input item increases in January are Paving Mixtures (up 14.6%), Diesel Fuel (up 3.6%), Concrete Brick, Block & Pipe (up 2.2%), Copper & Brass Shapes (up 1.9%) and Flat Glass (up 1%). Steel Pipe & Tube is down 1.3%. Both Lumber/Plywood and Fabricated Structural Steel are down 0.5% or less.

In the quarterly percent change table you can see the drop in Q3’22 and more in Q4’22, a sharp change in the rate of inflation. This shows up as expected in lower average of Inputs to Res and NonRes for 2023.

2-15-25 PPI Materials Inputs for 2024 to Residential are up 1.7%, to Nonres Bldgs are up 0.6% and to Highway are up 0.5%.

In all three of these Inputs PLOTS, the materials plots above and this Summary plot, so far Q1’25 is only Jan. It will wiggle around for 2 more months.

A General construction cost index or Input price index doesn’t track whole building final cost and does not capture the full cost of inflation in construction. Final cost indices represent total actual cost to the owner and are often higher than General indices. Producer Price Index (PPI) INPUTS to construction reflect costs at various stages of material production, generally do not represent final cost of materials to the jobsite and do not include labor, productivity or margins. PPI Final Demand indices include all costs and do represent actual final cost to the Owner.

PPI Construction Final Demand Indices

PPI Final Demand indices should not be referenced monthly. These are quarterly indices. PPI Final Demand Indices are for Nonresidential Bldgs only. Every three months (Jan, Apr, Jul, Oct) BLS performs an update survey to correct the PPI Final Demand indices for the current month and the previous two months. For more than two years, in most quarters, about 80% to 90% of the change in the index for the quarter was posted in the update month. In some quarters, growth is flipped from negative to positive in the update month. And still in other quarters the correction month doubles or halves the rate of growth. January data (released in Feb) is an update month. The PPI Final Demand for Jan. is basically the correction for Nov.+Dec.+Jan. The index should NOT be compared mo/mo. Compare qtr/qtr, but make sure to use the correct update month with two other months, (Nov+Dec+Jan)/(Aug+Sep+Oct).

Due to the nature of the PPI Final Demand Index, (2 monthly readings from model then every 3rd month correction by contractor survey), the correction month for 5 of the last 8 quarters flipped the sign of the modeled months. In 2 of the remain 3 months the correction months more than doubled the rate of change for the previous 2 months. There is no other proof needed to convince you to take care when using this index. Get it right.

2-15-25 The PPI Final Demand table below is updated to JAN 2025 data.

PPI data FINAL DEMAND Apr closes out Q1.

Q1’25/Q4’24: Avg Nonres Bldgs +0.6%, School +0.4%, Healthcare +2.2%.

YTD25/avg24: Avg Nonres Bldgs +1.35%, School +1.4%, Office +1.6%, Healthcare +2.91%

Jan is the correction month for Q4, so the Jan 2025 value closes out the 4th qtr 2024. Most bldg types and contractors are up in the 2nd half 2024 from the 1st half, but cost growth has been nearly flat. If extended, the trend leading into 2025 is for slow inflation growth. However the Roofing trades are increasing at a slightly faster rate than all others.

Due to the nature of the PPI Final Demand Index, (2 monthly readings from model then every 3rd month correction by contractor survey), it is not uncommon that the contractor survey correction month flips the sign of the modeled months for the quarter.

In 2023, for each quarter, we see two months posted positive, then a large negative value for the correction month. The negative correction is large enough in all cases to turn the entire quarter negative. Here’s an example: for the period May-Jun-Jul, Jul is the correction month. PPI values were +0.09%, +0.02%, -1.23%. The average for each of the 3mo is -0.37%, (the sum of the 3 months divided equally. The May and Jun values that were originally posted based on modeling flipped from + to – after the contractor survey value is applied to the QTR. That highlights why PPI Final Demand indices should not be referenced monthly.

However, these declines are from such a high mark at the end of 2022 (we began 2023 up 11%), that the rate as we began 2024 is still up 6% to 7% from the average in 2022.

9-5-25 Q2 Final Demand Index closed out with this July data. Both Table and Plot are updated.

Construction Analytics Building Cost Indices and Reference Indices

2-21-25 Current and predicted Inflation updated to Q4’24

2022 Rsdn Inflation 15.8%, Nonres Bldgs 12.8%, Nonbldg Infra 17.3%
2023 Rsdn Inflation 2.5%, Nonres Bldgs 5.6%, Nonbldg Infra 6.3%
2024 Rsdn Inflation 3.0%, Nonres Bldgs 3.2%, Nonbldg Infra 3.4%

Since 2011, Nonres Bldgs inflation is 4.8%, Residential is 5.4% and Non-bldg is 4.3%.

2-21-2025 Inflation Forecast, Nonres Bldgs +4.0%, Residential +4.7% and Non-bldg +4.0%. (This is a pre-tariff forecast.)

5-15-2025 Inflation Forecast, Nonres Bldgs +4.4%, Residential +5.0% and Non-bldg +4.3%. (This is a preliminary tariff forecast.)

9-3-2025 Inflation Forecast, Nonres Bldgs +4.4%, Residential +4.7% and Non-bldg +4.0%. (This is a preliminary tariff forecast.)

10-17-2025 Inflation Forecast, Nonres Bldgs +4.2%, Residential +3.8% and Non-bldg +4.0%. (This is a preliminary tariff forecast.) These October revisions are NOT yet carried into the tables and plots. Only Residential changed considerably, however, it is the most dependent on government data, which is currently not available. The biggest change is in the Census Bureau Lasperyes Index, a constant quality residential new build index, which now includes August data and both June and July were revised down slightly.

The following Construction Inflation plot (for Nonresidential Buildings only) shows three elements: 1) a solid grey bar reflecting the max and min of the 10 indices I track in my weighted average inflation index, 2) a solid black line indicating the weighted average of those 10 indices, and 3) a dotted red line showing the Engineering News Record Building Cost Index (ENR BCI). Notice the ENR BCI is almost always the lowest, or one of the lowest, indices. ENR BCI, along with R S Means Index, unlike final cost indices, do not include margins or productivity changes and in the case of ENR BCI has very limited materials and labor inputs.

Most of the tables and plots here are cumulative indexes. Construction Inflation annual percents for the three major sectors, Residential, Nonresidential Bldgs and Non-building Infrastructure, are recorded in this short table, Escalation form Prev Year. Useful to compare to last year, but you would need to mathematically do the compounding to move over several years.

Final cost indices represent total actual cost to the owner and are generally higher than general indices. Producer Price Index (PPI) INPUTS to construction reflect costs at various stages of material production, generally do not represent final cost of materials to the jobsite and do not include labor, productivity or margins. Even with that, a PPI Inputs index +20% for a material could be only a +5% final cost. PPI Final Demand indices include all costs and do represent actual final cost. The solid black line (above) represents the Construction Analytics Building Cost Index for Nonresidential Bldgs and is a final cost index.

9-3-25 Although the PPI data was all updated, as of yet it does not have a big effect on inflation. Some slight increase is built into my inflation to account for PPI increasing in the 2nd half. The inflation tables do not yet need an update. Inflation tables will be updated soon.

2-21-25 All index tables and plots updated to Q4’24. NOTE: all prior index tables were set to base year 2019=100. All these updated tables are set to base year 2024=100.

All of the Index Tables and the plot below, Construction Analytics Building Cost Index, show the cumulative inflation index, or the cumulative compounded effect of inflation for any two points in time.

How to use an index: Indexes are used to adjust costs over time for the effects of inflation. An index already compounds annual percent to prevent the error of adding annual percents. To move cost from some point in time to some other point in time, divide Index for year you want to move to by Index for year you want to move cost from, TO/FROM. Costs should be moved from/to midpoint of construction, the centroid of project cost. Indices posted here are at middle of year and can be interpolated between to get any other point in time.

The three yellow highlighted lines in the index tables are plotted here. The three major sectors, Residential, Nonresidential Buildings and Non-building Infrastructure,

This table and plot is an extension of the tables and plots above. Data is as of Q4 2023, but the table covers from 1967 to 2000. Data is pretty sparse.

Non-building Infrastructure Indices

In the Index tables above, dividing the current year by the previous year will give the current year’s inflation rate. All indices are the average rate for the year.

Also, in the tables above, all reference indices data is gathered from the original source, then all are normalized to a common base, 2019 = 100. This allows us to see how different indices compare.

Comparison of Indices

This plot compares four final cost indices and three inputs cost indices. Prior to 2020 there is a lot of symmetry in the final cost group. Everything changed after that.

Previous year Construction Inflation 2024 – last updated JUL 2024 – BASE 2019=100

Links to Data Sources Construction Inflation >>> Links

Outlook 2025 CONSTR OUTLOOK 2025 Feb 2025

Links to Explanations of PPI Index PPI Explanation provided by AGC

Construction Briefs – As We Begin 2025

January 9, 2025 9:06 am / 2 Comments on Construction Briefs – As We Begin 2025

We are close enough, now in mid-January, to see where the numbers will end up for 2024. Construction spending as of Nov is up 6.5% year-to-date vs same 11 months in 2023. We are up 6.0% ytd vs the average of 2023. My forecast predicts we end 2024 up 6.2%, but growth is only 3.4% in 2025.

In February of 2024, with the Dec 2023 data in hand, my forecast for 2024 spending was $2,190 billion, only 1.8% higher than my current (Nov’24 data) forecast of $2,150 billion. Most of that early higher estimate was due to what I carried for my residential forecast, which I have since lowered by 3.6% from the initial forecast at the beginning of 2024. You can see in this monthly summary table that the Nonresidential Bldgs and Non-building forecasts have varied very little and the Total forecast has not varied up or down by more than 0.4% over the last 4 months.

edit 2-3-25 updated table to include Dec data. See the line comparing actual to the SEP data forecast.

Single family construction spending reached a post-2006 high in Q4’21 thru Apr’22 ($480bil). From Apr’22 to the lowpoint in May ’23 ($360bil) spending dropped 25%. By year-end 2023 it had recovered almost 3/4ths of that drop. It fell again in mid-2024 to $410bil, but has since recovered to the year-end’23 level ($450bil). That drop is reflected in the difference between the current forecast and the earlier forecast.

NAHB – Cost of Constructing a Home 2024 excellent summary www.nahb.org/-/media/AB4E…

Construction spending in 2024 will hit near $2.15trillion, another new high, up 54% since 2019.

Caution: the following table, showing Constant$ analysis, now shows Constant$ with base year at 2024. Since Q1-2020 I have used the base year at 2019. This update changes the Constant$ amount, but not the Constant$ percent growth. Slight changes in prior years inflation resulted in some minor changes in Constant$ growth.

The last time construction spending declined was 2011. But construction spending includes inflation, which adds nothing to the volume of work put-in-place. Construction volume, (spending minus inflation) will finish the year up only 10% since 2019.

My construction spending forecast for 2025 Nonres Bldgs is down 0.7%. But it’s driven by projects ending in Manufacturing (and Warehouse). In the last 3 yrs, there were $230bil Mnfg starts, most in 2022, $130bil above normal, now some are ending. Without Mnfg, nonres bldgs 2025 spending would be up 4.5%. So while outward appearance may be that nonres spending is declining, in large part it is due to mega spending on Manufacturing buildings (and Warehouse) tapering down upon completion, creating very large annual declines, but normal. See The Manufacturing Spending Taper

Last year at this time, many of the Nonres Bldgs and Non-bldg line items showed Nov-Dec spending was already several points higher than the 2023 average. This was an indication leading into 2024 that those markets were on track to start the year already up. This year,most markets show a decline from the 1st half of the year into the 2nd half. Two notable declines are Warehouse and Office w/o Data Centers. Both start 2025 down 5%+ from the average in 2024.

I didn’t realize how much impact there was with the inclusion of (increasing) Data Centers in the (decreasing) Office construction spending values. I’ve now separated Data Centers from Office and Warehouse from Commercial/Retail. Office spending was pretty strong near it’s highs until 2h’22. Early in ’24 it had fallen to 8%-12% below ’22. Office spending is now 15%-18% below 2022. On the other hand, Data Center spending as of Nov is up 30% from the same months in 2023, and is up more than 60% above the average of 2023 and 120% above 2022. It will continue to increase into 2025.

In 2014-2015, Data Centers was less than 5% of total Office+DC construction spending. Today it is approaching 30%. Next year it will approach 40%. In 2015, Warehouse was 25% of total Commercial spending. By 2022 it had climbed to 54%. In 2025, it will fall back to 45%. Warehouse spending is now decreasing after climbing 100%+ since 2019.

Dodge reports as of Nov construction starts for 2024 up 5% YTD. Residential starts up 7%. Nonresidential Buildings starts up 4%. Non-building starts up 5%.

Construction Jobs do not get compared to construction spending. Spending includes inflation, which adds nothing to business volume. Compare jobs growth to Volume growth.

Construction Jobs counts here are the average for the year. That accounts for months during the year, other than Dec/Dec, with higher (or lower) percentage of yr/yr growth. For instance, total jobs Dec24 vs Dec23 increased only by 196k jobs or 2.4%. If you based annual growth on Dec/Dec, it would indicate 2024 increased by 2.4%. However, during the year, jobs growth in Mar-Apr-May were all greater than +3% compared to same month prior year. In fact, every other month during the year had a higher yr/yr growth rate than Dec/Dec. Yearly average of all 12 months shows total jobs annual average up 226K or 2.8%.

Dec/Dec shows a snapshot in time of one month compared to same month last year, without taking into account what might have happened in any of the other 11 months. YR24avg/YR23avg shows the change in the number of jobs over the whole year and accounts for all activity in the year.

Jobs 2024 AVG thru DEC. Rsdn+61k +1.9%. Nonres Bldgs+134k+3.7%. Nonbldg +29k+2.6%

Construction Volume AVG thru NOV Residential +2.9% Nonres Bldgs +3.3% Nonbldg +4.3%.

From 2012-2019, we added a yearly average 245,000 jobs/yr. In 2024 we added 226,000 jobs, but from 2021-2024, we added an average of 247,000 jobs/yr. We add the most jobs in Feb and Mar. We add the least jobs in Apr and Jun. We add more jobs, by far, in the 1st qtr. than any other qtr.

Don’t be surprised if 2025 construction jobs growth slows a bit. Jobs are slightly ahead of volume growth. Since 2019, both Jobs and Volume increased 10%. But that includes 2020, when volume increased 4% but jobs fell by 250k, or 3%. Over the period of 4 years 2021 thru 2024, Jobs increased 13%. Volume of work increased only 6%.

The unemployment rate in construction goes UP in the 1st qtr every year, by 2% to 3% (data since 2011). Now, your 1st thought may be, if unemployment is increasing, that is probably because jobs are falling. Well, construction has ADDED jobs in the 1st qtr. every year since 2011 (excluding 2020), by an avg of nearly 30% of all jobs added annually. More recently, since 2020, we’ve added almost 40% of total annual jobs in Q1. Construction unemployment is not going up in winter months because we lose jobs in winter. So how can the unemployment rate still go up? There’s only one number left in the equation. It goes up because the entire workforce increases by greater than the number of jobs added.

For an example of how this employment timing information can be useful see Employing Correlation – Using construction industry employment data as a proxy for flatbed demand

Harvard Joint Center for Housing Studies‬ posted that In Texas, California, New Jersey, and the District of Columbia, immigrants make up more than half of construction trade workers.

Nov PPI for Construction Mtrls little changed from Oct Inputs YTD to Nonres +0.6%, to Rsdn +1.7%, to Hiway +0.6% Concrete products up 6%, Steel products down 7%-8%, Lumber/Plywood down 2%, Copper up 6%, Diesel down 14%. Final Demand YTD (all in) Nonres Bldgs all up 0.5% or less. Trades up 1%-2%.

We can’t always tell what affect changes in the cost of construction materials will have on the final outcome of annual construction inflation. PPI materials index does not account for productivity or margins and varies on stage of input. A good example of stage of input is PPI for Steel Mill Products. That does not include delivery from mill to fabricator, detailing, fabrication, shop painting, delivery to jobsite, shakeout, lifting, installation and finally overhead and profit, in all about 75% of the cost of structural steel installed.

Construction Analytics Nonres Building Cost Index is a weighted average of eight final cost indices.

NAHB estimates that $184 billion worth of goods were used in the construction of both new multifamily and single-family housing in 2023 and that $13 billon of those goods were imported. eyeonhousing.org/2024/12/impo…

Steel Statistics Cost Increase Effect on Construction? written 2016 US is world’s largest steel importer at 30MMT/yr. 50% from our top suppliers, Canada, Brazil, South Korea and Mexico. China supplies less than 2%. The U.S. annually imports about $2bil from Mexico.

One quarter of all annual Brussel Sprouts consumption occurs around the Christmas holiday.

PPI Data Sept’24

October 12, 2024 10:07 am / 1 Comment on PPI Data Sept’24

Once again, the Producer Price Index for construction materials is pretty tame with the release of the September data. For Q3, inputs to all types of construction post less than 1% growth for the quarter. This is now 6 or 7 quarters in which Inputs and Final Demand has been near 1% or lower.

Inputs year-to-date vs the 2023 average are up 1.9% for residential and up less than 1% for Nonresidential and Highway.

Individually, a few material inputs had notable moves in September: Lumber/Plywood up 1.1%, Steel Mill Products down 1.2%, Steel Pipe and Tube down 1.3%, Copper and Brass Shapes down 1.1% and Diesel down 14%.

Year-to-date, various concrete items are up 5% to 6%, Steel items are down 6% to 7%, Copper and Brass Shapes are up 6% and Diesel is down 13%.

Final Demand indices for 2024 are barely moving. Although Office and School are both up over 1% for Q3, no building type is up even a half percent when compared to the average of 2023. Roofing Trades are up 1.7% YTD. The average YTD for the four trades is up less than 1%. Over the last six months The only Final Demand indices to move more than 2% (for the full 6mo) were Office Bldgs and Electrical Trades.

Construction Inflation 2024

January 17, 2024 11:37 am / 8 Comments on Construction Inflation 2024

SEE Construction Inflation 2025 – 2-21-25

This post was last updated Jul 2024. All Index Tables and plots here are BASE 2019 = 100. The more recent Inflation 2025 post is revised to BASE 2024 = 100.

To properly adjust the cost of construction over time you must use an Actual Final Cost Inflation Index, otherwise called a selling price index. General construction cost indices and Input price indices that don’t track whole building final cost do not capture the full cost of escalation in construction projects.