Impact Fee Map
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How to find the actual number for your parcel

Nobody publishes a national table of what you will pay, because there isn't one. Here is the sequence that gets you a real number in about two hours.

Why no site can just tell you the number

There are roughly 39,000 general purpose local governments in the United States, plus tens of thousands of special districts that levy their own charges. Each sets its own schedule, updates it on its own cycle, and publishes it in its own format, or not at all.

Any page that claims to list impact fees for your city is doing one of two things: quoting a number scraped once and never refreshed, or averaging across a state in a way that is useless for a budget. Both will cost you more than they save. What can be pinned down precisely is the legal framework: who is allowed to charge, for what, when, and what rights you have. That is what this site does. The number itself you get in the two hours below.

Step 1: establish who actually has jurisdiction

Before anything else, confirm whether the parcel is inside city limits or in unincorporated county. Builders lose weeks on this. A parcel with a city mailing address is frequently in the county, under a different fee schedule and a different building department.

Use the county assessor's parcel viewer, search the parcel number, and read the taxing districts listed on the record. That list is the closest thing to a complete roster of who can bill you.

Step 2: read the taxing district list as a fee list

Every district on that parcel record is a potential charge. A water district, a sanitation district, a fire protection district, a school district, a park district. In much of the West, the largest single charge on a new house comes from a district the city never mentions.

Write them down. You will call each one.

Step 3: pull the adopted fee schedule, not the web page

Search the jurisdiction's site for "fee schedule" plus the current fiscal year. What you want is the resolution or ordinance that adopted it, usually a PDF with an effective date and an adopting body. Web pages go stale; adopted schedules carry a date you can rely on.

If it is not online, the request is short and routine: ask the clerk for the current adopted fee schedule and the date of the resolution adopting it. This is a public record everywhere.

Step 4: ask for a written fee estimate for your address

Most building departments will produce one on request, and many will do it before you own the land. Give them the address or parcel number, the use, the square footage, the number of bedrooms and the meter size you expect.

Ask for it in writing and ask what could change it. That last question is the one that surfaces the sewer district nobody mentioned.

Step 5: get the utility charges from the utility

Do not accept the city's number for a district's charge, and do not accept a district's number for the city's. Call each provider you listed in step 2 and ask for the current connection and capacity charge for your meter size.

Meter size is the variable that moves this number most. Oversizing a meter "just in case" can add thousands of dollars in permanent capacity charges.

Step 6: read the nexus study before you accept the fee

If the jurisdiction charges impact fees, there is a study behind them. It is a public document. It tells you the level of service assumed, the projects the money is meant to build, and the credits that were or were not applied.

That study is where a challenge starts, and more usefully, where a credit request starts. Most builders never open it.

Keep going

Sheetz v. County of El Dorado, and what it actually changedIn 2024 the Supreme Court removed the shield that legislatively adopted impact fees had enjoyed. Then, in 2025, the fee survived anyway. Both halves matter.The three cases every fee argument runs throughEssential nexus, rough proportionality, and the rule that money counts. Twenty minutes here will make every conversation with a permit desk shorter.Impact fee, tap fee, system development charge: the difference that costs moneyThey are collected at the same window, on the same day, from the same check. They come from different law, and only one of them is usually protected by your state's act.
Read this before you rely on anything here. Impact Fee Map describes who is legally allowed to charge new construction, for what, and what a fee payer's rights are under state law. It does not publish fee amounts for any city, county or district, and it never will, because no source keeps thirty-nine thousand local schedules current and a stale number is worse than none. This is not legal advice, not a fee quote and not a substitute for the adopted fee schedule of the bodies with jurisdiction over your parcel. Statutes change; verify against the current text and confirm every figure in writing with the agency that will bill you.