How Much Does a Building Permit Cost? Fees, Add-Ons, and Savings

A residential building permit usually costs between $500 and $3,000, with a national average around $1,688 according to Angi; simple projects can run as little as $150, and complex renovations can push past $8,500.¹ The base permit fee is only part of the bill. Plan review charges, impact fees, utility connection fees, and state surcharges routinely stack on top, and in many jurisdictions those add-ons cost more than the permit itself.

Typical Costs by Project Type

Permit fees track the scope of the work. Commonly cited ranges for residential projects:

New home construction: $1,000 to $3,000 for the building permit alone, with total permitting costs running far higher in expensive metro areas.²
Room addition or remodel: $200 to $600 for the permit, with plan review adding a significant charge in most jurisdictions.
Bathroom remodel: $200 to $800.
Garage or basement conversion: $800 to $2,000.¹
Roofing: $250 to $500.
Decks, fences, and patios: $100 to $500.
Electrical work: $10 to $500.
Plumbing: $50 to $500.
HVAC: $250 to $400.¹

Those figures are for the permit fee itself. In a major city the all-in cost is much higher. San Diego’s combined plan check and inspection fees for a single-family home total roughly $15,370 before supplemental charges.³ The County of San Diego charges a plan review fee of $2,221 plus $0.343 per square foot and a permit fee of $2,423 plus $0.211 per square foot for a new single-family dwelling — a 2,500-square-foot home works out to about $5,600 in combined plan review and permit fees before impact fees, utility connections, or state surcharges are added.⁴

Retroactive or “as-built” permits, used to legalize work that was completed without a permit, typically cost more than a standard permit. Expect $2,000 to $8,000, and the work has to pass inspection in its finished state.²

How the Base Fee Is Calculated

There is no national fee schedule. Each city or county sets its own rates, but most jurisdictions use one of a few standard methods. The most common approach ties the fee to the project’s total construction valuation, generally landing between 1% and 2% of that value.⁵ Under that formula, a $200,000 kitchen and bathroom gut renovation would generate a base permit fee of $2,000 to $4,000.

Many jurisdictions calculate valuation using the International Code Council’s Building Valuation Data table, which publishes average per-square-foot construction costs by building type and construction class and is updated every six months.⁶ The jurisdiction multiplies gross square footage by the ICC cost figure, then applies its own fee multiplier calibrated to cover the building department’s operating budget.

The ICC’s International Residential Code also provides a model fee schedule (Appendix AL) that many smaller jurisdictions adopt directly. Under that table, a project valued at $100,000 carries a base permit fee of $1,027, with an additional $7 per $1,000 of value above that threshold.⁷ Larger jurisdictions often layer on additional charges. Boulder, Colorado uses ICC valuation data as a starting point but adds energy code fees, development excise taxes, and capital facility impact fees.⁸

Some jurisdictions charge flat fees for smaller routine projects or use a per-square-foot rate instead of running a valuation calculation. Oregon requires all local jurisdictions to follow a uniform methodology set by the state building codes division, which produces some consistency statewide.⁵ Most states leave fee-setting entirely to local governments, which is why the same project can cost dramatically different amounts from one city to the next.

Fees That Get Added on Top

The base permit fee is a starting point. Several other charges typically accompany it.

Plan review fees. Most jurisdictions charge a separate fee for reviewing the construction plans, commonly set as a percentage of the base building permit fee. Clatsop County, Oregon sets that percentage at 75%.⁵ In Boulder, plan check fees range from 25% of the permit fee for single-family residential work to 65% for commercial projects.⁸

Impact fees. These one-time charges fund infrastructure like roads, sewers, water systems, and parks. They are usually assessed at permit issuance and can range from a few hundred dollars to tens of thousands. A 2015 national survey found the average new home in California incurred $23,455 in impact fees.⁹ In Las Vegas, a new single-family dwelling triggers a $1,000 transportation tax, a $195 traffic impact fee, more than $550 in desert conservation charges, and a sewer connection charge of $3,235.¹⁰

State surcharges. Many states add fees on top of local charges. Oregon’s state surcharge is 12% of the building permit fee, plus a 3% technology fee.⁵ San Diego assesses a seismic fee of $0.13 per $1,000 of valuation for low-rise residential structures and a building standards fee of $4 per $100,000 of valuation.³

Other add-ons. Expect line items like a general plan maintenance fee ($737 in San Diego), an accessibility review surcharge (10% of the plan review fee in San Diego County), lead hazard prevention fees for pre-1978 buildings, and reinspection fees when work fails an initial inspection ($94 per occurrence in Boulder; $150 per extra inspection in Phoenix for low-valuation projects).³⁸¹¹

Commercial Projects Cost More

Commercial building permits generally cost three to ten times more than residential permits for comparable square footage. The gap reflects the greater complexity of commercial projects: more detailed engineering and architectural plans, stricter fire safety and ADA compliance requirements, and significantly more inspections. A residential project might require three or four inspections; a commercial build can involve ten or more. Commercial projects also carry substantial infrastructure impact fees to cover the additional demand they place on roads, utilities, and public services.¹²

Commercial permit fees are often calculated on a per-square-foot basis, typically ranging from roughly $0.15 to $0.84 per square foot, or about 1% to 5% of total project value.² Given the complexity, budgeting a 15% to 20% buffer above the initial estimate helps cover unexpected requirements and revision fees.

What Happens if You Skip the Permit

Working without a required permit costs far more than the permit would have. In Chicago, a stop-work order carries a minimum penalty of $1,000, and in most cases the building permit fee is tripled if issued after a stop-work order has been initiated.¹³ Boulder doubles the permit fee for any work started or completed without an approved permit, and if unpermitted work cannot be brought up to code the city may require the owner to tear it out at their own expense.⁸

In California, contractors who fail to obtain required permits face civil penalties of up to $5,000 per violation, potential suspension or revocation of their contractor’s license, and orders requiring them to pay all delinquent permit fees plus any penalties imposed by the local building department.¹⁴

The costs continue at resale. Sellers are legally required to disclose known unpermitted construction to buyers, and appraisers may exclude unpermitted additions from a home’s valuation. Lenders may refuse to issue mortgages for properties with unresolved permit issues, standard title insurance policies generally do not cover unpermitted work, and homeowners’ insurance companies may refuse to cover unpermitted spaces or deny related claims.¹⁵ A new owner inherits full responsibility for bringing the property into compliance, including any outstanding fines.¹⁶

Not every project requires a permit. Most jurisdictions exempt minor cosmetic and maintenance work. In Minneapolis, no permit is needed for painting, wallpapering, installing carpeting or floor tile, replacing cabinets and countertops, or adding smoke alarms.¹⁷ Freestanding decks under 30 inches high, fences up to seven feet, and storage sheds under 200 square feet are also typically exempt. Mecklenburg County, North Carolina exempts work on one- and two-family dwellings costing $40,000 or less, though that threshold does not apply to any work involving load-bearing structures, plumbing system design changes, HVAC modifications, or electrical system changes.¹⁸ When the answer is not obvious, a call to the local building department settles it before you spend money.

Ways to Keep the Total Down

Permit fees are set by ordinance and are not negotiable, but several strategies keep the total from ballooning past the base amount.

Submit a complete, code-compliant application from the start. Every round of plan corrections adds time and often triggers additional review fees. In Miami-Dade, the upfront fee covers one initial review and one correction cycle; each additional resubmittal costs extra.¹⁹⁸¹¹

Look for fee reductions tied to project type. San Diego County offers a 7.5% reduction in plan check and permit fees for projects meeting green building criteria, and waives solar permit fees entirely. The county’s Homeowner’s and Business Owner’s Relief Act eliminates permit review fees for certain improvements, including solar panels, electric water heaters, heat pump systems, and weatherization projects like window and insulation upgrades.²⁰

Affordable housing projects receive fee relief in many cities. Austin’s SMART Housing Program offers fee reductions from 25% (for projects with 10% affordable units) to 100% (for projects with 40% affordable units) across 29 separate fee categories.²¹ Port Angeles, Washington waives 26 building permit and development fees for 16 eligible housing types, including accessory dwelling units, duplexes, triplexes, fourplexes, and low-income homeownership projects.²² Local rules vary widely, so a quick check with your building department is worth the call before you file.

1
Angi. How Much Does a Building Permit Cost
2
My Site Plan. Building Permit Costs
3
City of San Diego. Information Bulletin 501
4
County of San Diego. PDS Fee Schedule 613
5
Clatsop County. How Are New Dwelling Permit Fees Calculated
6
Calhoun County. ICC 2024 Building Valuation Data
7
ICC. Appendix AL – Permit Fees
8
City of Boulder. Planning and Development Services 2025 Schedule of Fees
9
NAHB. Impact Fee Handbook
10
City of Las Vegas. Permit Fee Estimator
11
City of Phoenix. Phoenix City Code – Permit Fees
12
Permit Division. Commercial vs Residential Permits Virginia
13
City of Chicago. Work Without a Permit
14
CSLB. Building Permit Complaint
15
Nolo. Discovering Unpermitted Construction When Selling Your Home
16
Rocket Mortgage. Buying a House With Unpermitted Work
17
City of Minneapolis. Work Exempt From Permit
18
Mecklenburg County. Permitting
19
Miami-Dade County. How to Apply for a Permit
20
County of San Diego. Green Affordable Housing Report
21
Local Housing Solutions. Reduced or Waived Fees for Qualifying Projects
22
City of Port Angeles. Building Permit Fee Waiver Program