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Revisions in Estimates
 9 Months Ended
Sep. 30, 2025
Quarterly Financial Information Disclosure [Abstract]  
Revisions in Estimates Revisions in Estimates
Our profit recognition related to construction contracts is based on estimates of transaction price and costs to complete each project. These estimates can vary significantly in the normal course of business as projects progress, circumstances develop and evolve, and uncertainties are resolved. Changes in estimates of transaction price and costs to complete may result in the reversal of previously recognized revenue if the current estimate adversely differs from the previous estimate. In addition, the estimated or actual recovery related to estimated costs associated with unresolved affirmative claims and back charges may be recorded in future periods or may be at values below the associated cost, which can cause fluctuations in the gross profit impact from revisions in estimates.
When we experience significant revisions in our estimates, we undergo a process that includes reviewing the nature of the changes to ensure that there are no material amounts that should have been recorded in a prior period rather than as revisions in estimates for the current period. For revisions in estimates, generally we use the cumulative catch-up method for changes to the transaction price that are part of a single performance obligation. Under this method, revisions in estimates are accounted for in their entirety in the period of change. There can be no assurance that we will not experience further changes in circumstances or otherwise be required to revise our estimates in the future.
In our review of these changes for the three and nine months ended September 30, 2025 and 2024, we did not identify any material amounts that should have been recorded in a prior period.
The projects with increases from revisions in estimates, which individually had an impact of $5.0 million or more on gross profit, are summarized as follows (dollars in millions, except per share data):
Three Months Ended
September 30,		Nine Months Ended
September 30,
2025202420252024
Number of projects with upward estimate changes2 2 7 2 
Range of increase in gross profit, net$
5.0 - 8.3
$
5.4 - 5.7
$
5.2 - 9.8
$
5.2 - 6.2
Increase to project profitability, net$13.3 $11.1 $50.8 $11.4 
Increase to net income$9.9 $8.5 $37.7 $8.7 
Amounts attributable to non-controlling interests$— $— $5.1 $— 
Increase to net income attributable to Granite Construction Incorporated$9.9 $8.5 $32.6 $8.7 
Increase to net income per diluted share attributable to common shareholders$0.18 $0.16 $0.62 $0.17 
The increases during the three months ended September 30, 2025 were due to decreases in estimated costs from mitigated risks and production at a higher rate than anticipated. The increases during the three months ended September 30, 2024 were due to changes in the estimated amount of probable recovery on outstanding claims and decreases in estimated costs from mitigated risks. The increases during the nine months ended September 30, 2025 were due to settlement of outstanding claims, decreases in estimated costs from mitigated risks, production at a higher rate than anticipated and acceleration of project schedule. The increases during the nine months ended September 30, 2024 were due to changes in the estimated amount of probable recovery on outstanding claims and changes in the estimated transaction price related to unresolved contract modifications resulting from revisions to project work plans, permitting and scheduling.
The projects with decreases from revisions in estimates, which individually had an impact of $5.0 million or more on gross profit, are summarized as follows (dollars in millions, except per share data):
Three Months Ended
September 30,		Nine Months Ended
September 30,
2025202420252024
Number of projects with downward estimate changes1 — 3 4 
Range of reduction in gross profit, net$
5.9
$
—
$
6.8 - 15.1
$
5.3 - 22.0
Decrease to project profitability, net$5.9 $— $32.5 $44.2 
Decrease to net income$4.4 $— $24.1 $33.8 
Amounts attributable to non-controlling interests$— $— $— $5.4 
Decrease to net income attributable to Granite Construction Incorporated$4.4 $— $24.1 $28.5 
Decrease to net income per diluted share attributable to common shareholders$0.08 $— $0.46 $0.54 
The decrease during the three months ended September 30, 2025 was due to additional costs related to changes in project duration, net of estimated probable recovery. The decreases during the nine months ended September 30, 2025 and 2024 were due to additional costs related to changes in project duration, net of estimated probable recovery, lower productivity than originally anticipated, and increased labor and materials costs.