Construction Cost Index, Q3 2021

Construction Cost Index

(JANUARY 2009 = 100)

The Mortenson Cost Index is showing a single quarter increase of 2.9% nationally and 2.3% in Phoenix. Over the last twelve months, costs increased 19.2% nationally and 17.4% in Phoenix.

Construction Employment

(an indicator of future wage and activity trends)

Building construction employment in the Phoenix metro region totaled 28,100 in September, which is 3% higher than September 2020. Construction employment in Phoenix has been largely resistant to the effects of the pandemic.

Material Pricing Changes

(Cumulative 2019 to Q3 2021)

Although we have seen some decreases, costs for building materials remain escalated due to manufacturing issues, supply chain delays, and raw material shortages.

For a more specific update or questions regarding this report, please contact:

Ty Bohlender
Chief Estimator

Tammy Carr
Director of Business Development

Advice for Building Owners


The construction market, like many, is experiencing unprecedented inflationary headwinds in 2021, which are presenting unique challenges.Market volatility continues as trade partners work through supply chain and labor availability challenges. The rate of increase is trending lower but still substantially above historical levels and remains variable.

This variability is driven by multiple factors including project type, time to market, geography, etc. Many of our projects have increased less than the reporting from our trade partners for this index, some as low as 3-5%. While less than experienced earlier this year, this persistent fluctuation continues to present unique challenges for projects in the near term and agility in our planning is required.

About this report: The Mortenson Construction cost index is calculated quarterly by pricing a representative non-residential construction project in Phoenix and other geographies throughout the country. Local employment figures are from the Bureau of Labor Statistics.