Building Permit Cost Field Guide
Why permit fees vary so much
Permit fees are set by local governments and can differ by a factor of three or more across jurisdictions with similar project costs. A $400,000 addition might cost $1,800 in permit fees in a rural Midwest county and $5,200 in a high-cost California city. The main drivers are the local fee schedule (percentage of project value vs. flat fee tiers), the project category (new construction vs. renovation), and whether a full plan review is required. Regional labor costs and code-enforcement staffing levels push high-cost areas higher. This calculator uses national-average fee percentages by tier and applies region multipliers derived from publicly available fee schedules from cities across the country.
What the fee covers and what it does not
The base permit fee and plan review fee cover your right to build and the cost of plan review staff. They do not cover impact fees (charged per unit or per square foot to offset infrastructure costs in growing areas), utility connection fees, or inspection fees billed separately for each required inspection phase. For a new home in a fast-growing metro, impact fees alone can add $10,000 to $30,000 to your total cost. Always ask your building department for a full fee schedule, not just the permit fee, before finalizing your construction budget.
When to get an exact quote
Use this estimate for early-stage budgeting and to check whether contractor bids include permit costs. Before pulling permits, call or visit your local building department and ask for a fee estimate on your specific scope of work. Most departments can give you an accurate number in one phone call if you have your project value, square footage, and a brief project description.
Permit fees vary widely by jurisdiction. This estimate uses national averages. Contact your local building department for an exact quote.
Most jurisdictions also charge impact fees for new construction in growth areas. These can add significantly to your total cost. Ask your building department about impact fees, utility connection fees, and inspection fees before finalizing your budget.
Methodology
This calculator applies a sliding-scale percentage to project value, then adjusts by project type multiplier and region multiplier. The base fee percentage ranges from 1.5% for small projects (under $25,000) down to 0.6% for large projects (over $500,000), reflecting the tiered fee schedules used by most jurisdictions. Project type multipliers range from 1.20x for new construction to 0.65x for minor renovations. Region multipliers are 1.40x for high-cost areas, 1.00x for mid-cost, and 0.70x for low-cost. Plan review fee is calculated at 65% of the base permit fee, the national average plan review ratio. A low-to-high range band of 30% below to 50% above the mid estimate reflects real-world variation across jurisdictions within each tier. Source data: HomeAdvisor / Angi national permit cost survey (2024), NAHB Cost of Regulations Report (2021), and published fee schedules from the cities of Austin, Denver, and Portland.