What changes a remodel in Austin.
Most Austin single-family lots can now hold up to three homes
The city council adopted the first round of the HOME amendments on December 7, 2023, and the city began taking applications on February 5, 2024. They allow up to three housing units, tiny homes included, on lots zoned SF-1, SF-2 or SF-3. A second round, adopted May 16, 2024, created a small-lot home that can sit on as little as 1,800 square feet, down from the standard 5,750. For an owner with a big backyard, a second or third unit is now allowed by right on most single-family lots.
Source: City of Austin, HOME Amendments
East of I-35 the soil is clay that swells and shrinks
Texas A&M AgriLife in Travis County describes the Blackland Prairie soils east of I-35 as deep, dense clays. They shrink and swell with moisture, open wide cracks and heave fence posts and patios. West of I-35 the Hill Country side sits on thin soil over limestone. The permit record shows it. Austin issued 6,856 residential remodel and repair permits from January 2024 through September 24, 2026, and 2,055 of them mention foundation work. By late September, 2026 had already caught up with the 740 of all of 2025.
Source: Texas A&M AgriLife Extension, Travis County, The Real Dirt on Austin Area Soils
Big trees can change where an addition goes
Austin protects any tree 19 inches or more across, measured 4.5 feet above the ground, and you need a permit to remove one. Heritage trees, 24 inches or more and of listed species such as all oaks, pecan and bald cypress, generally cannot be removed at all. The rules also reach the critical root zone, the ground around a tree its roots depend on. No work is allowed in the inner quarter of that zone, and half of the full zone has to stay undisturbed. On a remodel that needs a building permit, the tree check happens inside residential plan review.
Over half of Austin sits in a wildfire code zone
Austin adopted a Wildland-Urban Interface code in 2020 and an updated version that took effect July 10, 2025. More than half the city falls in one of its three zones. New construction there needs a Class A roof, the highest fire rating, and decks and nearby fences must use ignition-resistant materials. Existing homes do not have to be retrofitted, but replacing more than half a roof in a zone moves the job onto a city permit.
Source: Austin Fire Department, Wildland-Urban Interface Code
What a remodel costs in Austin in 2026.
6,543 of 6,856
Austin is harder to price than most big metros, and the reason is worth knowing before you collect bids. The Census Bureau's American Housing Survey, the federal source for what owners spend on home projects, did not include Austin among its 2023 metro areas. The nearest Texas metro it did survey is Dallas-Fort Worth, so the project figures below come from there and are labeled that way.
City permits usually fill that gap, but not in Texas. A 2019 state law stops cities from requiring owners to disclose what a residential project costs. Of the 6,856 remodel and repair permits Austin issued from January 2024 to late September 2026, 6,543 list the job's value as $0 or $1. The field exists, but nobody fills it in.
What Austin data does show is the cost of labor. Half of Austin-area plumbers earn more than $30.20 an hour and half of electricians more than $29.03, according to federal wage data for May 2025. Those are wages, not what a company bills you. A contractor's hourly rate also covers insurance, trucks, licensing and profit, so expect it to sit well above these figures.
| Figure | Value | What it measures |
|---|---|---|
| Plumber median wage, Austin area | $30.20 an hour | May 2025, Austin-Round Rock-San Marcos metro. What the worker earns, not the rate a company bills. (BLS OEWS May 2025, Austin-Round Rock-San Marcos) |
| Electrician median wage, Austin area | $29.03 an hour | May 2025, same metro. About 7,340 electricians work in the area. (BLS OEWS May 2025, Austin-Round Rock-San Marcos) |
| Carpenter median wage, Austin area | $24.16 an hour | May 2025, same metro. Carpenters frame, build decks and install trim and cabinets. (BLS OEWS May 2025, Austin-Round Rock-San Marcos) |
| Median roof job, Dallas-Fort Worth | $11,430 | 2023 American Housing Survey, owner-occupied homes. Austin was not in the 2023 survey, so this is the nearest Texas metro. Margin of error $2,500. (Census AHS 2023, Dallas-Fort Worth-Arlington) |
| Median bathroom remodel, Dallas-Fort Worth | $5,000 | 2023 American Housing Survey. Includes small jobs such as a new vanity, which pulls the median down. Margin of error $1,517. (Census AHS 2023, Dallas-Fort Worth-Arlington) |
| Median flooring project, Dallas-Fort Worth | $3,200 | 2023 American Housing Survey, covering flooring, carpet, paneling and ceiling tile. Margin of error $617. (Census AHS 2023, Dallas-Fort Worth-Arlington) |
| Austin remodel permits with no stated value | 6,543 of 6,856 | Residential remodel and repair permits issued January 2024 to September 24, 2026 that list $0 or $1. Texas law lets owners leave project cost off the permit. (City of Austin, Issued Construction Permits) |
Who issues permits in Austin.
Who handles your permit depends on the address. Inside Austin city limits it is the city's Development Services Department. Round Rock runs its own building office, and outside any city Travis County handles a narrower set of development permits. Rules differ a lot between them, so check the jurisdiction on your property tax record before you plan.
- City of Austin Development Services Department
Building, trade, tree and express permits for homes inside Austin city limits
- City of Round Rock Building Inspection
Residential remodel, addition, foundation and deck permits inside Round Rock in Williamson County
- Travis County Development Services
Development permits outside city limits in Travis County, including floodplain, septic systems (OSSF) and driveways
- In Austin, painting, tile, carpet, cabinets and countertops need no building permit, and neither does swapping asphalt shingles for asphalt shingles.
- Austin exempts a foundation repair of 128 square feet or less and a deck of 200 square feet or less that sits no more than 30 inches above grade.
- Kitchen and bath remodels, foundation repairs and size-for-size window replacements qualify for Austin's Express permit, and most are issued in one business day.
- An Express permit needs a registered general contractor on it. A homeowner can register as their own.
- Removing an Austin tree 19 inches or more across, pruning 25 percent or more of its canopy, or digging in its root zone needs a Tree Ordinance Review Application.
- In an Austin wildfire zone, replacing more than half of a roof needs an Express permit.
- Round Rock requires no permit for a residential re-roof, but a foundation repair permit there needs a foundation plan sealed by an engineer and costs $125.
- Texas law bars cities from basing residential permit fees on a project's value and from requiring owners to disclose what the work costs.
What Austin homeowners plan most.
Kitchen remodel
The most searched project in Austin. A kitchen remodel in the city can go through the Express permit, so the permit rarely sets the schedule.
Bathroom remodel
Bathroom remodels, tub-to-shower conversions included, qualify for Austin's Express permit, mostly issued in one business day, and plumber wages here run about $30 an hour.
Foundation repair
Blackland Prairie clay east of I-35 moves with every wet and dry spell. Austin issued 2,055 permits mentioning foundation work from 2024 to late September 2026.
Deck building
Small low decks can skip the permit in Austin, but big trees and wildfire zones decide where a deck can go and what it can be made of.
Flooring
New floors are finish work, so Austin requires no building permit. In Dallas-Fort Worth the median flooring project ran $3,200 in 2023.
ADU or backyard cottage
The HOME rules allow up to three units on most single-family lots, which turned backyard cottages into a common question for Austin owners.
Before you start.
How much does a remodel cost in Austin?
No public source publishes Austin remodel prices. The 2023 American Housing Survey skipped Austin, and Texas law keeps project costs off city permits. The nearest surveyed Texas metro, Dallas-Fort Worth, had a median roof job of $11,430 and a median bathroom project of $5,000 in 2023. Austin wages are known: plumbers earn a median $30.20 an hour and electricians $29.03, before any company markup.
Do I need a permit to remodel a kitchen or bathroom in Austin?
Often yes. Austin puts kitchen and bath remodels on its Express permit track, and most Express permits are issued in one business day. Pure finish work such as painting, tile, cabinets and countertops needs no building permit. The permit needs a registered general contractor, and a homeowner can register as their own.
Can I build an ADU in Austin?
On most lots zoned SF-1, SF-2 or SF-3, yes. The HOME amendments, taking applications since February 5, 2024, allow up to three housing units on one of those lots, and tiny homes of 400 square feet or less count as units. Tree rules, wildfire code zones and utility capacity can still limit where the unit goes, so check those early.
Why are foundation problems so common in Austin?
East of I-35, much of Austin sits on Blackland Prairie clay, which swells when wet and shrinks when dry. That movement cracks slabs, sticks doors and heaves patios. Austin issued 2,055 residential permits mentioning foundation work from January 2024 through September 24, 2026. A repair of 128 square feet or less needs no permit, and larger repairs go through the Express track.
Can I cut down a tree on my own property in Austin?
Not if it is large. A tree 19 inches or more across, measured 4.5 feet up, needs a permit to remove, and so does pruning a quarter or more of its canopy. Heritage trees, 24 inches or more of species such as oaks and pecans, generally cannot be removed. Trees under 19 inches are not regulated on residential lots.
Do I need a permit to replace my roof in Austin?
Not always. Replacing asphalt shingles with asphalt shingles is exempt in Austin. You need an Express permit if you replace more than 128 square feet of roof decking, or more than half the roof in a wildfire code zone. Round Rock does not require a permit for a residential re-roof at all.
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Sources
- City of Austin, HOME Amendments
- Texas A&M AgriLife Extension, Travis County, The Real Dirt on Austin Area Soils
- City of Austin, Tree Reviews and Permitting
- Austin Fire Department, Wildland-Urban Interface Code
- BLS OEWS May 2025, Austin-Round Rock-San Marcos
- Census AHS 2023, Dallas-Fort Worth-Arlington
- City of Austin, Issued Construction Permits
- City of Austin, Trees on Residential Property
- City of Austin, Express Permits
- City of Austin, Work Exempt from Building Permits
- City of Round Rock, Other Building Permits
- Travis County Development Services
- Texas HB 852 (2019), Local Government Code 214.907
- Census AHS Table Creator release notes (2023 metro list)