Why Permit Fees Vary So Much Between Cities

Search “how much does a building permit cost” and you will find a single number, a national average. It is not wrong so much as unable to be right. PermitNotebook’s own permit cost data, read directly from official fee schedules across the localities we cover, shows the same permit type priced by different mechanics from one city to the next, sometimes within the same state. This guide walks through why, using examples pulled straight from that verified fee data: valuation-based fees versus flat fees, plan review billed as its own separate line, and permits your own city does not even charge for because a different agency handles that trade entirely.

Valuation-based fees: the charge scales with what you say the project costs

Most localities PermitNotebook covers price at least some permits off the declared value of the work, not a flat number. Bellevue, Washington’s building permit fee for a deck or fence runs off Table 4 of Ordinance 6879: a $44 minimum inspection fee for a project valued up to $500, rising from there, plus a $25 state building code fee added at issuance. Chandler, Arizona bills the same way for its deck, patio, and roof-replacement permits, a standard building permit fee by construction valuation with a $50 minimum, since none of those project types gets its own line item on the fee schedule. Clark County, Nevada does the same under its own Building Administrative Code, Table 3-A: a deck or patio cover permit starts at $54 for the first $500 of value and climbs from there. In each case, the number on the fee schedule is a formula, not a price, and what you pay depends on the value you declare for your specific project.

Flat fees: sometimes the same city charges a fixed number instead

The same jurisdictions that price some permits by valuation charge others a flat number regardless of project size, sometimes for the exact same trade. Bellevue is the clearest example: its 2026 fee ordinance charges a flat $290 for a standard re-roof permit, a fixed issuance fee under Table 5, priced completely differently from the valuation-based deck and fence fees in Table 4 of that same ordinance. Chandler runs the same split within one fee schedule: an electrical service upgrade of 400 amps or less is a flat $100 under section 4.6.4(b), while other electrical work is billed by valuation with that same $50 minimum, and a minor combined plumbing job of one to six plumbing openings with limited gas or electrical work is a flat $100 under 4.6.4(q), while a larger plumbing project reverts to the valuation formula. Austin, Texas prices fences, uncovered decks, and pools with a flat Small Projects Plan Review fee of $132.86 regardless of size, the same project types Bellevue, Chandler, and Clark County all price by valuation instead. There is no version of “the average fence permit fee” that is true in all four of those places at once.

Plan review: often billed as its own line, not folded into the permit fee

Plan review is frequently a separate charge on top of the base permit fee, not something the base fee already covers. Bellevue adds plan review at 65 percent of the inspection fee for a building permit like a deck, or 10 percent of the inspection fee, with a $35 minimum, for an electrical or solar permit. Chandler adds its own 65 percent plan review fee on top of the valuation-based building permit for projects like a deck or an HVAC system. Clark County, Nevada layers on two separate plan review charges at once, a 65 percent building plan review fee and a 10 percent zoning plan review fee, both on top of the base valuation charge. Austin folds plan review into its flat Small Projects fee instead of billing it separately. None of these approaches is wrong. They are just different, and a quoted “permit fee” that leaves out plan review can understate what you actually owe by more than half.

Trade handoffs: sometimes your own city does not charge the fee at all

Some permits are not priced, or even issued, by the office you would expect, because state or regional law hands that specific trade to a different agency. In Washington, electrical permits for unincorporated King County and unincorporated Clark County are not issued by the county at all. Both counties’ own fee schedules say the same thing: electrical work is permitted through the Washington State Department of Labor and Industries (L&I), not through the county permitting office, so no county fee applies. King County’s schedule adds the specific number, citing WAC 296-46B-906: new single- or two-family home wiring starts at $119.90 for the first 1,300 square feet plus $38.20 per additional 500 square feet, all under L&I’s own fee schedule rather than the county’s.

Plumbing works the same way around Seattle. Neither Seattle’s SDCI nor unincorporated King County charges a plumbing permit fee on its own building fee schedule. Public Health Seattle and King County, a health department rather than a building department, enforces the plumbing code and issues the permit instead, at $137 plus $27 per fixture. Look for a Seattle plumbing permit fee on SDCI’s own fee schedule and you will not find one, because SDCI is not who charges it.

Montgomery County, Maryland splits the same way for plumbing and water heater work. The county’s Department of Permitting Services charges no fee for either, because those permits go through WSSC (the Washington Suburban Sanitary Commission) instead, on WSSC’s own schedule. A Montgomery County bathroom remodel makes the split concrete: the remodel itself is filed as a residential Alteration Building Permit at $0.78 per square foot of altered area, with a minimum filing fee of $329.59, through the county, while any plumbing fixture work inside that same remodel needs a separate WSSC plumbing permit outside the county process entirely. One project, one address, two agencies, two fee schedules.

Re-inspection fees are real, and they add to whatever you started with

If work fails an inspection, most localities charge again to look at it a second time, and that charge is not part of the original permit fee either. We have verified exact re-inspection fees for three of the localities PermitNotebook covers, Fairfax County, Virginia; Chandler, Arizona; and Seattle, Washington, in What Happens After a Failed Permit Inspection, rather than repeating the numbers here. The short version: it is a real, locality-set charge, and it is one more reason a single quoted permit fee rarely turns out to be the last number you pay.

Why a single national average cannot capture any of this

Put those mechanics together, valuation-based versus flat pricing, plan review billed separately or bundled in, an entire trade handed off to a different agency, and a possible re-inspection fee on top, and it becomes clear why one national average permit cost is close to meaningless. Averaging a valuation-based fee from one city against a flat fee from another blends two different pricing systems into a number that describes neither. Leaving out plan review understates the true cost wherever it is charged separately. A number that assumes your city charges for electrical or plumbing, when a state agency or a health department actually does, is not describing your bill at all. The only number worth trusting is the one read directly from your own locality’s own fee schedule, for your own permit type, checked against the specifics, valuation, trade, whether plan review is separate, that make it different from the next city over.

What to do next

Start with What does a building permit cost? for the fee data itself, read directly from official schedules across every locality PermitNotebook covers, with the source and verification date cited for each one. If you want the number for your specific project rather than working through a fee schedule yourself, run it through Project Check for a free, cited breakdown.