Jurisdiction
City of Austin, Texas
Address
6310 Wilhelmina Delco Dr. (Permitting and Development Center), Austin, TX 78752
Contact
- url: https://www.austintexas.gov/development-services/contact
- phone: 512-978-4000
Roofing permit required
Not required
Contractor registration required
Required
Registration details
- license: Per Austin Development Services' contractor-registration guidance: "Trade contractors, general contractors, and homeowners acting as contractors must be registered as a Contractor with Building and Trade Contractor Services" before a permit can be activated. General contractors register once and update only on a name/address/agent change; trade contractors renew annually. The department's published guidance does not name "roofing" as a distinct trade-registration category the way it names MEP trades — a roofing contractor most likely registers under the general-contractor category, but the city does not say so explicitly, so confirm the category with Building and Trade Contractor Services before registering. The department's contractor-registration page does not publish fee or insurance/bond minimums.
Permit process note
NO PERMIT FOR A REROOF OUTSIDE THE WILDLAND-URBAN INTERFACE. City Code section 25-12-243, amending IRC Section R105.2, exempts "Asphalt shingles that replace existing asphalt shingles, unless the property is located in the Wildland-Urban Interface area and 50 percent or more of the roofing is being replaced." and applies the same proviso to "Replacement of any roof covering that does not adversely affect the roof structure". So a full reroof on a property in the Wildland-Urban Interface area needs a permit, and so does any covering change that adversely affects the roof structure. The city's "Work Exempt from Building Permits" page states the same two exemptions and the same proviso.
Adopted code
2024 editions of the International Building Code (IBC) and International Residential Code (IRC), with local amendments, effective July 10, 2025 — superseding the prior 2021 editions (effective September 1, 2021).
Drip edge
Required — AUSTIN DOES NOT WRITE THIS RULE, AND THE ICC TEXT IS NOT RESTATED HERE. Austin adopts the 2024 International Residential Code at City Code Section 25-12-241, by Ordinance No. 20250410-040, which repealed and replaced Article 11 of Chapter 25-12 (Technical Codes) and took effect on July 10, 2025. That enacted ordinance was read in full for this entry, all ten pages through its signature page, and Article 11 was read again as currently codified through Ordinance No. 20260423-048. The City's deletion table at Section 25-12-241(B) and its local amendments at Section 25-12-243 reach only three provisions in the R900 range - R902.2, R905.7.4 and R905.8.5, all wood shingle and wood shake material standards. Nothing in either instrument touches the drip-edge provision at Section R905.2.8.5, which is neither deleted nor rewritten for Austin, so it is in force in the city exactly as the adopted code publishes it. The operative ICC wording of R905.2.8.5, which sets the laps, how far the drip edge must extend below the sheathing and back onto the deck, the fastener spacing and the order of the underlayment at eaves and at rakes, sits behind the ICC paywall. This record does not restate it and does not rely on any third-party republication of it; a roofer needing the exact wording should read Section R905.2.8.5 in the code itself or ask Austin Development Services.
About drip edge
Impact-resistant roofing
Not required — NO IMPACT-RESISTANCE MANDATE APPLIES IN AUSTIN, AND THE ONE ROOF CLASS AUSTIN DOES SET IS A FIRE CLASS. Austin adopts the 2024 International Residential Code at City Code Section 25-12-241, by Ordinance No. 20250410-040, which repealed and replaced Article 11 of Chapter 25-12 (Technical Codes) and took effect on July 10, 2025. That enacted ordinance was read in full for this entry, all ten pages through its signature page, and Article 11 was read again as currently codified through Ordinance No. 20260423-048. The whole of Chapter 25-12 (Technical Codes), Articles 1 through 14, was read as codified as well. The City's deletion table at Section 25-12-241(B) and its local amendments at Section 25-12-243 reach only three provisions in the R900 range - R902.2, R905.7.4 and R905.8.5, all wood shingle and wood shake material standards. Neither instrument adds any impact-rating requirement, and no UL 2218, Class IV or FM 4473 requirement appears anywhere in Austin's technical codes. The single occurrence of the phrase "Class 4" in them is an NFPA 704 flammability class inside a hazardous-materials piping rule and has nothing to do with roof coverings. Where Austin does set a roof-covering class it is a fire class: in Proximity Zone C of the wildland-urban interface, Section 506.2 of the Wildland-Urban Interface Code as amended by the City at Code Section 25-12-183 requires a roof assembly complying with "a Class A rating when tested in accordance with ASTM E108 or UL 790". Class A there is a fire-test rating; the hail ratings a roofer is sold on are UL 2218 Classes 1 through 4, and Austin requires none of them anywhere in the city. That matters in central Texas, where hail is the reason most roofs get replaced: an insurance discount for impact-rated shingles is a matter between the homeowner and the carrier, and it is not an Austin code requirement.
Repair permit threshold
City Code section 25-12-243 amends IRC Section R105.2, Work exempt from permit, and its Building list exempts, at item 12, "Asphalt shingles that replace existing asphalt shingles, unless the property is located in the Wildland-Urban Interface area and 50 percent or more of the roofing is being replaced." Item 13 exempts "Replacement of any roof covering that does not adversely affect the roof structure, unless the property is located in the Wildland-Urban Interface area and 50 percent or more of the roofing is being replaced." THE CONDITION HAS TWO PARTS, AND THE FIRST IS WHERE THE HOUSE IS. Outside the Wildland-Urban Interface area, a like-for-like reroof of any size needs no building permit, which is the answer this record publishes. Inside that area, replacing 50 percent or more of the roofing takes the job out of both items, so a full reroof on a Wildland-Urban Interface property needs a permit; check the address before quoting the job. A covering change that adversely affects the roof structure falls outside item 13 anywhere in the city. DECKING HAS ITS OWN LINE. The same list carries a citywide scope exemption specific to roof decking repair, with no Wildland-Urban Interface carve-out attached to it: "19. Roof decking that does not exceed 128 square feet." (Items 14, 15 and 18 apply the same 128-square-foot figure to foundation, floor-decking and siding repairs; item 19 is the one specific to roof decking.) The items were read in the codified section and in the signed, executed Ordinance No. 20250410-040, page 4 of 10.
Wind design criteria
Austin's own § 25-12-243 (Ordinance No. 20250410-040, the signed, executed ordinance, effective July 10, 2025) fills in TABLE R301.2 CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA as follows: Ground Snow Load 5; Wind Design -- Speed 105 mph, Topographic effects NO, Special Wind Region NO, Windborne Debris zone NO; Seismic Design Category A; Subject to Damage From -- Weathering "Negligible", Frost Line Depth 12 in (305 mm), Termite YES; Ice Barrier Underlayment Required NO; Flood Hazards "Construction Commenced After 9/2/1981"; Air Freezing Index 30; Mean Annual Temp 68.1 (deg F). Read directly from the executed ordinance PDF, page 7 of 10.
Roof layer limit / recover
ONE OVERLAY, THEN TEAR OFF - AND IT IS THE ADOPTED CODE'S RULE, NOT A CITY RULE. Austin adopts the 2024 International Residential Code at City Code Section 25-12-241, by Ordinance No. 20250410-040, which repealed and replaced Article 11 of Chapter 25-12 (Technical Codes) and took effect on July 10, 2025. That enacted ordinance was read in full for this entry, all ten pages through its signature page, and Article 11 was read again as currently codified through Ordinance No. 20260423-048. Neither instrument contains any provision at Section R908 (Reroofing) at all. The City's deletion table at Section 25-12-241(B) and its local amendments at Section 25-12-243 reach only three provisions in the R900 range - R902.2, R905.7.4 and R905.8.5, all wood shingle and wood shake material standards. So no Austin overlay, recover or layer-count rule substitutes for the adopted code's own. In the 2024 edition the bar sits at Section R908.4 (Roof recover), whose exceptions block bars a roof recover "Where the existing roof has two or more applications of any type of roof covering." One existing layer may therefore be recovered; a second existing layer forces a tear-off to the deck. Note the edition renumbering, because it catches people who learned the rule on an older code: the bar that sat at Section R908.3.1.1 in the 2015, 2018 and 2021 editions was restructured in the 2024 edition, where R908.3 is Roof replacement and the recover bar moved into an unnumbered exceptions block under R908.4. The section number moved; the two-layer rule did not.
Deck & sheathing requirements
NOT SET BY THE CITY FOR ORDINARY WORK, AND THE ICC TEXT IS NOT RESTATED HERE - BUT AUSTIN DOES WRITE ROOF-DECK RULES INSIDE THE WILDLAND-URBAN INTERFACE. Austin adopts the 2024 International Residential Code at City Code Section 25-12-241, by Ordinance No. 20250410-040, which repealed and replaced Article 11 of Chapter 25-12 (Technical Codes) and took effect on July 10, 2025. That enacted ordinance was read in full for this entry, all ten pages through its signature page, and Article 11 was read again as currently codified through Ordinance No. 20260423-048. The City's deletion table at Section 25-12-241(B) and its local amendments at Section 25-12-243 reach only three provisions in the R900 range - R902.2, R905.7.4 and R905.8.5, all wood shingle and wood shake material standards. Nothing in either instrument addresses roof-deck sheathing, the substrate an asphalt shingle may be fastened to, or the fastening of a roof covering, so no Austin sheathing thickness, substrate rule or fastening schedule substitutes for the adopted code's own requirement at Section R905.2.1. That ICC text is behind the ICC paywall; it is deliberately not reproduced here from any third-party republication, and a roofer needing the exact wording should read it in the code itself or ask Austin Development Services. What Austin does write for itself sits in a different code, and a roofer working in the wildland-urban interface needs it. City Code Section 25-12-181 adopts the 2024 International Wildland-Urban Interface Code with the City's own deletions, amendments and additions, and Section 25-12-183 carries their text. By its own Section 101.2 that code applies to "the construction, alteration, movement, repair, maintenance, and use of any building, structure, or premises within the wildland-urban interface areas in this jurisdiction", so it reaches a reroof and not only new work. In Proximity Zone C, Section 506.2 as amended by Austin provides that "Roofs shall have a roof assembly that complies with a Class A rating when tested in accordance with ASTM E108 or UL 790" and that "For roof assemblies where the profile allows a space between the roof covering and roof deck, the space at the eave ends shall be firestopped to preclude entry of flames or embers, or have one layer of 72-pound (32.4 kg) mineral-surfaced, non-perforated cap sheet complying with ASTM D3909 installed over the combustible roof deck." Its fourth exception lets a Class A certified covering on a roof sloped steeper than 2 units vertical in 12 units horizontal be installed over a standard combustible roof deck over felt or equivalent underlayment - the codified text prints the felt weight as "30 1b", which reads as a typographic rendering of 30 lb, so confirm that figure with the Austin Fire Department office of the Fire Marshal, which administers this code, rather than relying on the printed characters. Austin also adds its own Section 506.2.1.1 (Woven roof valleys): valley shingles weaved or woven to create a continuous layer of shingles over the valley "may be flashed using 26 gage (0.019 inch) galvanized sheet metal running the full length of the valley and extending at least 12 inches on both planes of the roof surface", and "Flashing shall be viewable from the end of the valley at the roof eave for inspections." Proximity Zones A and B are dealt with at Sections 504 and 505; Austin did not amend their roof-assembly subsections, so those run on the base wildland-urban interface code text, which is not reproduced here.
Sales & use tax
8.25% combined (6.25% state + 1.00% City of Austin + 1.00% Austin MTA (Capital Metro transit authority) special-purpose-district tax), the Texas local-rate cap -- confirmed by direct extraction of the Comptroller's own published rate table (city-rates.xlsx: CityTax 0.01, SPD "Austin MTA" tax 0.01, Total 0.0825, listed for Austin under both Travis and Williamson counties). Texas collects no construction use tax at building-permit issuance; use tax, when owed, is self-assessed by the purchaser and remitted directly to the Comptroller's office rather than collected by a city or county permit office (Comptroller Use Tax guidance, comptroller.texas.gov/taxes/sales/use-tax.php). Under Comptroller guidance for real property repair and remodeling, "Labor to repair, remodel, or restore residential real property is not taxable"; on the lump-sum contract typical of residential re-roofing, "you pay tax on all your supplies, materials, equipment, and taxable services when you buy them. You don't charge your customer tax" (Comptroller Pub. 94-116, Real Property Repair and Remodeling, comptroller.texas.gov/taxes/publications/94-116.php) -- so the combined rate above is the roofer's own cost basis on materials purchased, not a rate charged to the homeowner.