Permitting delays are more than an inconvenience: they can be one of the least visible costs in a development budget. When a project loses months to intake issues, resubmittals, or slow review cycles, the financial impact compounds across debt service, taxes, insurance, contractor mobilization, and lost revenue.
Most developers feel the pain intuitively. Few can quantify it precisely.
That's why we built the Permitting Delay Cost Calculator: a simple way to estimate what each month of permitting delay costs your project, and so what cutting that delay is worth.
This story outlines the economics behind delays, what the available data says, and how to use the calculator to make better decisions, strengthen pro formas, and justify early investment in quality submittals.
Why Permit Delays Matter More Than Ever
For most projects, construction financing, carrying costs, and market timing create a fragile economic balance. Every month that a permit sits in review creates ripple effects:
- Capital costs increase. Interest, taxes, and insurance continue even though the project isn't moving.
- Contractor pricing shifts. Missed mobilization windows can lead to repricing.
- Market conditions change. Rent, absorption, and debt markets can move materially during prolonged review cycles.
- Inflation adds pressure. Delays expose the project to more quarters of cost escalation.
- Revenue is delayed. Every week of lost schedule pushes NOI and stabilization further out.
When developers think of permitting, they often think in terms of time. In reality, the more important question is: How much money does time cost?
What the Data Says About Delay Costs
The visible costs of a delay (permit fees, resubmittal charges, administrative time) can be a small fraction of the real number, because carrying costs keep running while nothing moves.
One widely cited estimate comes from the Building Industry Association of Washington (BIAW), a trade association representing Washington's home builders that describes itself as the state's largest trade association, and whose stated focus includes influencing legislative and regulatory agencies (BIAW). Its members benefit from faster permitting, so treat its figures as an industry estimate rather than an official measure. Its November 2022 analysis used approval times from a 2018 national land-use survey and put the average permit delay in Washington at 6.5 months. It then multiplied a homebuyer's monthly mortgage payment, including mortgage insurance, taxes and insurance, on a median new home ($565,613, 3% down, 7.9% fixed) by the months of delay, which comes to about $31,375 statewide (pp. 4, 6 to 7). By the same method, it estimated 7.68 months and $46,202 per home in Snohomish County, and 8.62 months and $51,857 per home in King County (p. 7). The Master Builders Association of King and Snohomish Counties and D.R. Horton presented these figures to the Washington State Legislature.
Two cautions. BIAW's figure is a buyer's mortgage cost, and it leaves out builders' own operating costs (p. 6). And the delay months predate Washington's 2025 review periods. Your carrying costs depend on your land, financing, taxes, insurance and the trades waiting on you, which is exactly what the calculator below asks for.
For developers managing multifamily or multi-phase communities, those costs scale with land value, financing rate and the number of trades on standby.
Sources: BIAW, "Cost of Permitting Delays: How Project Delays Increase New Home Prices", November 2022 (pp. 4, 6 to 7), an industry association analysis; MBAKS and D.R. Horton, "Permitting and Cost of Delay", presentation to the Washington State Legislature.
Why Delays Happen: The Hidden Rounds of Review
Some of the delay is in the applicant's hands. Common reasons a submittal comes back include:
- Incomplete or inconsistent applications
- Missing documents or outdated forms
- Uncoordinated architecture, structural, and MEP drawings
- Incorrect or mismatched calculations
- Code interpretation gaps
Our companion article What Cities Really Want From Permit Applicants covers what reviewers check at intake.
This is why investing in completeness, quality control, and first-pass readiness can pay off.
Try the Permitting Delay Cost Calculator
To help quantify these impacts, we built a calculator that estimates what a delay costs your project, using your own numbers.
How It Works
You enter:
- Land or project value
- Construction loan rate
- Monthly property taxes and insurance
- Months of delay
- Number of trades on standby (up to five), and the monthly standby cost per trade
The calculator adds up your monthly carrying cost (land financing, taxes and insurance, and trade standby) and multiplies it by the months of delay. To talk the numbers through with our team, enter your name, email, company and how many active permit applications your team manages.
Legal Disclaimer: The Permitting Delay Cost Calculator is an illustrative planning tool only. All outputs are estimates and should not be interpreted as financial advice, legal guidance, or guarantees of project performance. Project conditions vary and may materially affect actual outcomes. Permavia disclaims all liability for any actions taken or not taken based on use of this tool. Users are responsible for independently verifying all assumptions and consulting with qualified professionals before making project decisions.
Where the Calculator Fits Into Better Permit Strategy
The calculator isn't just a financial tool; it's a strategic planning tool.
Use it to:
- Justify investing in a high-quality first-pass-ready submittal
- Quantify the ROI of reducing resubmittals
- Understand how delays threaten financing or carry covenants
- Communicate urgency to design teams
- Bolster lender discussions with real numbers
- Benchmark project risks during feasibility
This context is especially helpful early in conceptual design and during pre-construction budgeting.
What a 60-Day Reduction Is Actually Worth
The calculator above tells you what delay costs. The more useful frame for your pro forma is the inverse: what does faster approval return?
For example, if your project carries $3,500 per day in total delay cost, a 60-day reduction in cycle time returns $210,000 in preserved project economics. That number does not show up on a cost ledger. It shows up in whether your pro forma survives its financing assumptions, and whether you hit your sales window.
Timing matters too. A 60-day permit slip that moves your model opening from March to May is not just a schedule change. In a rate-sensitive market, it can be the difference between selling at your original average sales price and having to offer concessions. For example, for a 40-home community at a $600,000 average sales price, a 3% price reduction forced by a missed sales window is $720,000 in lost revenue, a cost this calculator leaves out.
Since January 1, 2025, Washington law has set a 65-day review period for project permits when no public notice is required (100 days with notice, 170 with notice and a hearing), unless a jurisdiction has set its own periods. Building permits were taken out of these periods by a 2025 law (Commerce report p. 8; RCW 36.70B.020). The Department of Commerce's 2024 baseline report under SB 5290 (our summary) covered 2,723 permits completed in 2024, as reported by the larger cities and counties in seven of the state's most populous counties (50 were required to report; almost all did). On average, every category except binding site plans took longer than the review periods that took effect on January 1, 2025 (p. 12). Those periods were not yet required in 2024, and Commerce calls this first report a test of the reporting process rather than conclusive data (pp. 4, 10). Permits Commerce reported as “construction permits” averaged 81% over the statutory period (p. 12). Those figures count only the city's own review time: the clock starts once an application is complete and pauses while the city waits on the applicant (pp. 6 to 7; jurisdiction comparisons in Appendix A use review days not including pauses). The time it takes to get an application complete, and to answer each round of corrections, comes on top. That is the part of the timeline an applicant controls.
Cutting time does not always require the city to move faster. Every correction round you avoid shortens the part of the timeline you control.
Sources: RCW 36.70B.080; Washington State Department of Commerce, Annual Permitting Performance Report: 2024 (pp. 4, 6 to 8, 10, 12, Appendix A); RCW 36.70B.020.
Ready to Reduce Your Delays?
The part of the timeline you control starts with the submittal. Permavia reads your native PDF drawings and flags issues, citing the code section for each one, so you can fix them before you submit. Reports include a readiness confidence score.
Talk to our team about checking your next submittal before it goes in, or browse more permitting insights to keep your projects moving.