Building in unincorporated Travis County: no zoning, but a permit

Last verified August 7, 2026 against the Austin Land Development Code · Kimbrough Gray · KiliGray Homes

A development permit is required before any construction or other development begins in unincorporated Travis County — including the initial disturbance of soils from clearing, grading, drilling or excavation. There is no zoning, so no setback, height or floor-area table. Approval turns instead on flood, drainage and access factors.

Applies to: Land in the unincorporated areas of Travis County. If the property is inside any city — Austin, West Lake Hills, Rollingwood, Lakeway, Bee Cave — that city permits the work instead.

"No zoning" is true. "No rules" is not. Travis County has no zoning power, so there is no district map, no setback table, no height limit and no floor-to-area ratio. But a development permit is required before any construction or other development begins — and the trigger is far earlier than most people expect.

The permit is required before the first soil is disturbed

§464.061 requires a development permit or Special Flood Hazard Area Development Permit before development begins in the unincorporated county, and defines the trigger to include:

the initial disturbance of soils associated with clearing, grading, drilling or excavation;
other construction-related activities — the section names stockpiling of fill material and demolition;
the subdivision of land and installation of utilities;
placement and replacement of manufactured homes;
new construction, and repair, reconstruction, rehabilitation or additions amounting to substantial improvement of existing structures, including restoration after damage.

Two consequences worth naming. Clearing a pad before you have a permit is itself the permitted activity — the obligation starts at the excavator, not the foundation. And rebuilding after a fire or flood is caught by the same requirement.

A development permit is required in addition to any other permit. And in a special flood hazard area, development is unlawful without one regardless of whether a plat is required. This is not a permit you can substitute for with a plat approval.

Two narrow exemptions, both easy to lose

Agricultural clearing. No permit is needed to clear vegetation solely for agricultural purposes — but the exemption disappears if an application to develop the land for non-agricultural use has been granted or is pending, or if the clearing is preparation for a development plan "as indicated by the existence of contracts or marketing plans" for non-agricultural development. The Floodplain Administrator may waive the permit after determining the clearing has a bona fide agricultural purpose unrelated to proposed development or sale.

Survey access. No permit is needed to clear a strip up to 15 feet wide for surveying, geologic testing or other required site assessment ahead of site plan or final plat approval — provided the clearing will not obstruct a waterway or alter a natural floodplain or stream channel.

Both are drafted so that clearing done in contemplation of development falls outside them. Having a contract on the land is enough to defeat the agricultural exemption.

What the application has to show

Plans go in in triplicate, drawn to scale, on forms furnished by the Floodplain Administrator, and must show:

existing topography, and the location, dimensions and elevation of the lot, fill, stored materials and any proposed alterations — including landscape alterations;
existing and proposed structures, including placement of manufactured homes;
the location of proposed alterations in relation to special flood hazard areas;
elevation in relation to mean sea level of the lowest floor of all proposed structures and substantial improvements, and the elevation to which anything is or will be floodproofed;
0.2% and 1% annual chance flood elevations from effective FIRM and FIS data.

That last item is the practical difference from building inside a city. The submission is an elevation-and-hydrology exercise, not a dimensional one.

Approval is discretionary, and the factors are about water

Inside a city, compliance is largely arithmetic: meet the setback, stay under the height, and the permit follows. Ch. 464 does not work that way. The Floodplain Administrator decides on "all of the provisions of this chapter" and a list of factors, including:

danger to life and property from flooding or erosion;
the danger that materials may be swept onto other properties;
compliance with platting provisions;
safety of access and exit in times of flood, for ordinary and emergency vehicles;
the cost of providing government services during and after a flood;
expected height, velocity, duration, rate of rise and sediment transport of flood waters;
the availability of alternative locations not subject to flooding;
compatibility with the County's hazard mitigation plan for the area.

"Could this have gone somewhere else on the property" is an express consideration. That is a materially different conversation from a city plan review.

What this page does not cover, and why. The county's application portal, fees, review timelines and on-site sewage (septic) permitting live on the county's website and in other chapters we have not retrieved. Rather than describe a process we cannot cite, we say plainly: confirm the current application route, fee schedule and OSSF requirements with Travis County before you rely on any of this.

And one limitation specific to this source: encodePlus prints no supplement number and no codified-through date. Unlike our Municode sources, we cannot tell you how current this text is beyond the date we retrieved it.

Common questions

Do you need a building permit in unincorporated Travis County?

You need a development permit. §464.061 requires one before any construction or other development begins in the unincorporated areas, including the initial disturbance of soils from clearing, grading, drilling or excavation, and it is required in addition to any other permit.

Is there zoning in unincorporated Travis County?

No. Texas counties have no zoning authority, so there is no district map, setback table, height limit or floor-to-area ratio. Development is still regulated — through the development permit, subdivision regulations and floodplain rules — but not by zoning.

Do I need a permit to clear land in Travis County?

Usually yes — clearing is expressly part of the permit trigger. Clearing solely for agricultural purposes is exempt, but the exemption is lost if a non-agricultural development application is granted or pending, or if contracts or marketing plans show the clearing is preparation for development. A strip up to 15 feet wide may be cleared for surveying or site assessment.

What does Travis County look at when approving a development permit?

Flood and drainage factors rather than dimensions: danger from flooding and erosion, whether materials could be swept onto other properties, platting compliance, safe access for emergency vehicles during floods, the behavior of flood waters at the site, whether an alternative location exists that is not flood-prone, and compatibility with the county hazard mitigation plan.

Do I need a permit to rebuild after a fire or flood in unincorporated Travis County?

Yes. §464.061 extends the permit requirement to repair, reconstruction, rehabilitation or additions amounting to substantial improvement of existing structures, expressly including restoration after damage.

Send us an address and we will tell you what we find

We do this research ourselves on every project we take on — zoning, floodplain, watershed, trees, whether it is a legal lot. Send us an address and we will run it and tell you what we find. It works the same whether you own a vacant lot, a house you are thinking of adding a unit to, or a house you are thinking of replacing. No charge and no strings, and if it is a bad lot we will say so.

Send us an address

We are homebuilders, not the City of Austin. This page explains how we read the code in practice — it is not legal advice and it is not an official determination. Always confirm with Austin Development Services before you rely on it for a project. The authoritative text is the Austin Land Development Code; permitting questions go to Austin Development Services Department.