Which city or county permits your lot — and why a Houston address will not tell you

The authority that permits your house is decided by where the lot physically sits, not by the city on its mailing address. A "Houston, TX" address can be inside the City of Houston, in unincorporated Harris County, or inside a separate small city — Bellaire, West University Place, Southside Place, Hunters Creek — and a Katy address has the same problem across three county lines. The quickest reliable check is the appraisal district record for the property, which lists the taxing units the lot actually pays, confirmed against the recorded plat and a call to the permit office you think it belongs to.

It matters because the answer changes three things at once: how long review takes, what it costs, and — in the cities with zoning — how big a house the lot is allowed to hold.

Why the mailing address is the wrong test

Postal addresses are assigned by the post office for delivering mail. They follow delivery routes, not city limits, and nobody redraws them when a boundary moves. So the city name on an envelope tells you which post office sorts the mail, and nothing about which building official reviews your drawings.

In most of the country that distinction is academic. Around Houston it is not, for three reasons.

Small cities sit entirely inside the big one. Bellaire and West University Place are fully surrounded by the City of Houston, and so are several smaller villages. Their residents often have Houston addresses, yet each city runs its own permit office, adopts its own ordinance and reviews its own plans. A lot on one side of a boundary street is governed by Houston; the lot facing it can be governed by Bellaire.

Much of the suburban growth is unincorporated. A large share of the subdivisions people describe as "Houston", "Cypress" or "Spring" are not inside any city at all. They sit in unincorporated Harris County, where the county, not a city, issues the permit.

County lines run through the suburbs people name as one place. Katy straddles Harris, Fort Bend and Waller counties, and the city limits are a small part of what people call Katy. A Katy address can be permitted by the city or by a county depending on the lot.

Can two houses on the same street have different permit offices?

Yes. Where a street forms a city limit, the houses on one side can be inside the city and the houses facing them outside it — or inside a different city. They share a name on the street sign and a postal address format, and they answer to different ordinances, different fee schedules and different review queues.

What changes when the authority changes

People usually discover the jurisdiction question as a paperwork problem: the application went to the wrong office. The more expensive discovery is that the rules themselves are different. Here is the same kind of lot read against the City of Houston, which has no zoning, and Bellaire, which does:

Every "Not set by ordinance" in the Houston column is a real difference, not a gap in the table. Houston sets a building line by the street a lot faces — 20 ft on a local street — and a minimum lot size, and leaves height, coverage and side yards to the plat and the deed restrictions. Bellaire's R-3 district sets a 30 ft front setback, 55% maximum coverage, and a height rule with two ceilings: 25 ft to the top plate of the second storey and 35 ft 6 in at any ridge, measured from a reference elevation that rises on a lot in the floodplain. A two-and-a-half storey design drawn for a Houston lot can be simply unbuildable a few hundred feet away, and nothing about the address warns you.

The same logic runs through the region. Sugar Land caps the whole house with a 0.71 floor area ratio on top of a 40% coverage limit in its standard R-1 district. West University Place writes its limits as minimum open and pervious area, 45% and 35% of the site, rather than as a coverage maximum. Pearland's side yard depends on whether the lot was platted before 27 February 2006. Unincorporated Harris County has no zoning and no county setback, so the plat and the deed restrictions are the whole envelope.

Is it easier to build in unincorporated Harris County?

Easier to size, not necessarily faster to permit. With no zoning, there is no county coverage cap or height table to design against — but the recorded plat and the deed restrictions still bind you, and in many county subdivisions they are detailed. The county's real levers on a house are floodplain management, platting and driveway or culvert access, and floodplain review in particular can shape a design as much as any setback. As a planning range, county review of a new house runs 3 to 8 weeks against 4 to 10 weeks in the City of Houston: a real difference, but not the one that decides a project.

Review time and fees, authority by authority

Once the authority is known, the calendar and the fee follow from it. These are the planning ranges we use for a new custom home; they are not quotes, and each authority changes its own figures without notice.

Review durations follow a similar order. For a new house we plan on 3 to 8 weeks in unincorporated Harris County; 4 to 9 weeks in Sugar Land, Pearland and the Katy and Fort Bend area; 4 to 10 weeks in the City of Houston; and 5 to 12 weeks in Bellaire and West University Place, where height, setback and coverage review is part of every new-house submission.

The two small inner cities sit at the top of both ranges for a reason. Their ordinances ask more questions of a drawing — a flood-aware height datum in Bellaire, open-area and framed-area arithmetic in West U — and every question is a chance for a comment and a resubmittal. If you want to test your own project against the ranges, choose the authority and the project type here:

Does an addition go to the same office as a new house?

Yes. The authority is a property of the lot, so an addition or a renovation goes to the same office that would permit a new house there, and it is reviewed against the same ordinance. The ranges are shorter — an addition in the City of Houston typically takes 3 to 8 weeks and a remodel 2 to 6 — but the queue is the same queue. Our page on additions covers what else changes when the house already exists.

How to find out which authority governs your lot

There is no single public map we would stake a purchase on by itself. What works is three independent checks that should agree, and a phone call when they do not.

The appraisal district record is the fastest start. Each county's appraisal district publishes a record for every property, and it lists the taxing units that levy on it: the county, the school district, any utility district and, if the lot is inside one, the city. A lot that pays City of Bellaire taxes is inside Bellaire, whatever its address says. A lot that lists no city at all is very likely unincorporated.

The recorded plat tells you which body approved the subdivision and in which county it was recorded. It is not proof of today's jurisdiction — a boundary can have moved by annexation since the plat was drawn — but a plat approved by one city and a tax record naming another is a flag worth resolving before anything else.

The permit office itself is the final word. Give them the legal description — lot, block and subdivision — rather than the street address, and ask whether they would issue the building permit. It is a short call, and it is the one check that reflects the boundary as it stands this month.

The step people skip is the last one, and it is the one that catches the edge cases: the lot that sits in a city's extraterritorial jurisdiction — the band just outside a city's limits where it can still regulate how land is subdivided — and so can answer to the city for its plat and to the county for its building permit; or the lot whose boundary moved after the tax roll was prepared.

What is a MUD, and does it issue my permit?

A municipal utility district is a local government that supplies water, sewer and often drainage to a subdivision, paid for through its own tax line on your bill. Many unincorporated subdivisions around Houston are served by one. A MUD is not a permitting authority for your house: seeing one on the tax record tells you who runs the pipes, and usually that there is no city on the record, but the building permit still comes from the county — or, where the district sits inside a city, from that city.

What if a lot is split by a city limit?

It can happen on large or irregular lots at the edge of a city, and it is the one case where we would not guess how an office will treat it. Ask both offices, get their positions in writing before designing, and design to the stricter set of rules until they agree — because the height and coverage limits on either side may not.

Official offices, by authority

Each of these links goes to the authority's own site. Municipal sites reorganise often; if a page has moved, the city or county's home page is the reliable starting point.

Two of those deserve a note. Harris County's permit office is the Office of the County Engineer, and its old web address now redirects to a new one — a bookmark from a few years ago will look alive while pointing at a moved site. And Katy's site refuses automated requests, so a link checker will report it as blocked when it works perfectly well in a browser.

Where this gets overlooked

The honest limitation of everything above is that the authority is only the first layer. Finding the right permit office tells you whose ordinance applies and whose queue you join. It does not tell you what the recorded deed restrictions say, whether a homeowners' association or architectural control committee must approve the design first, or whether the lot sits in a floodplain that raises the slab. In Sugar Land's master-planned sections the private rules are frequently stricter than the city code, in unincorporated Harris County they are the entire envelope, and a permit issued by the city or county is no defence against a subdivision enforcing its own.

It is also worth saying that the permit fee is rarely the number that decides a project. The spread between the cheapest and dearest authority in the chart above is several thousand dollars; a design that has to be reworked because it was drawn to the wrong ordinance costs more than that in fees and weeks before it reaches a reviewer. The value of getting the jurisdiction right early is almost entirely in the design, not the invoice.

For a longer look at how the City of Houston's own process runs once you know it applies, Modern Acre Studio's 2026 walk through Houston permitting covers the application side. If the county record shows a floodplain designation, their piece on designing a house for flood and hurricane risk is the sensible next read.

We confirm the authority, pull the plat and read the deed restrictions before a line is drawn on any new custom home. It is the cheapest hour in the whole project, and on more lots than you would expect it changes the house.