Austin Roofing Company Construction Guide: New Build vs. Replacement in 2026

If you are planning a roof project in Austin right now, you are probably discovering that the difference between new construction and a replacement runs deeper than just the deck. I have worked through both scenarios across Central Texas over the last twelve years, and the choices you make at the start of 2026 will affect everything from permit timing to whether you can get a 40-year roof without tearing off what is already there. This Austin Roofing Company construction guide lays out the real process, the design decisions you only get once, and the numbers that actually matter this year.

New Roof Construction: What You Can Do That a Replacement Cannot

When you are building from the ground up, you have control over the structural skeleton. Roof trusses can be engineered for the exact span and load of your house, which means you can plan for a standing seam metal roof or heavier asphalt shingles without worrying about whether the existing framing can handle the weight. In a replacement, you are stuck with whatever the builder put in twenty or thirty years ago unless you pay to reframe, and that is rarely cost-effective.

New construction also lets you set the deck composition. OSB sheathing is standard in most of Austin, but if you want plywood for its moisture resistance in our humid summers, you can spec it from the start. You can also plan the roof slope around the material. A standing seam metal roof wants a minimum 3:12 pitch for proper drainage, while asphalt shingles can work down to 2:12 with an ice and water shield underneath. In a replacement, you work with the slope you have.

The Permitting Reality in 2026

The Austin Building Department has tightened its review timeline over the past two years. For new construction, you will need structural calcs, a site plan, and energy compliance documentation before you get a permit. The International Residential Code governs the structural requirements, and Austin adds its own amendments for wind resistance. Every new roof in Travis County must meet a Class 4 wind rating, which means specific nailing patterns and hurricane clips on every truss connection. Permit fees for new construction typically run between $400 and $800 depending on square footage, and you should budget eight to twelve weeks from submission to approval.

For a replacement, the process is lighter. You still need a permit, but the review is usually two to four weeks. The building department will want to see that the new covering meets code, but they are less likely to ask for full structural calcs unless you are changing the roof shape or adding heavy features like a skylight curb or a second layer of insulation.

The Design Decisions You Only Get Once

This is where experience separates a good roof from a great one. When you are doing new construction, you can integrate the roof system with the rest of the building envelope. R-38 insulation in the attic floor is the current Energy Star recommendation for Central Texas, but you can also insulate at the roof deck itself if you plan for a conditioned attic space. That decision has to happen before the trusses are built, not after.

Ventilation is another one. A ridge vent paired with soffit intakes creates a continuous air flow that keeps the deck temperature down and extends shingle life. In a replacement, you can add a ridge vent if the old roof had box vents, but the geometry might not work. On new construction, you design the vent path from the start, and it costs almost nothing compared to retrofitting it later.

You also get to choose your underlayment. An ice and water shield at the eaves and valleys is a no-brainer in Austin, where we get sudden downpours that test every seam. But you can also run it up the entire slope if you want to protect against wind-driven rain. That is a material cost decision that pays off during the first hailstorm. A replacement roof can have ice and water shield added at the valleys, but getting full coverage requires stripping the old deck, and that changes the job from a reroof to a tear-off.

This is the kind of thinking that a solid Austin Roofing Company construction guide should walk you through, because the difference between a 20-year roof and a 40-year roof is often a set of decisions made before the first shingle is laid.

Costs and Timelines for 2026

Let me give you the numbers I am seeing on jobs right now. For a standard 2,000-square-foot home with a medium pitch, new roof construction runs between $18,000 and $28,000 for asphalt shingles, and $30,000 to $50,000 for standing seam metal. That includes trusses, OSB sheathing, underlayment, drip edge, and all flashings. Replacement of the same area runs $10,000 to $18,000 for shingles and $22,000 to $35,000 for metal, assuming the existing deck is sound.

The timeline difference is significant. New construction takes three to five weeks on site after the permit is issued, assuming good weather. Replacement takes one to two weeks. But the new construction timeline includes things like the HVAC rough-in for roof-mounted equipment and the skylight curb installation, which a replacement might not need.

If you are financing a new home, the roof work is typically covered by the construction loan, and the permit fees are bundled into the overall building permit. For a replacement, you are paying out of pocket or through a home equity line, and the permit fees are separate, usually $150 to $300 for a standard reroof.

Warranties: What You Actually Get

Warranties are where I see the most confusion. A Tier 1 warranty from a manufacturer covers defects in the material for the full shingle life, typically 30 to 50 years. But it does not cover installation errors, and it does not cover labor. If your roofer goes out of business, that Tier 1 warranty is still good with the manufacturer, but you have to find someone to do the repair work. I always tell clients to ask for a copy of the warranty certificate before signing the contract, and to check that the installer is listed as an authorized applicator.

On new construction, you can also get a structural warranty from the builder that covers the trusses and deck for ten years. That is separate from the shingle warranty. On a replacement, you get the shingle warranty and a one-year workmanship warranty from the roofer. The architectural review board in some Austin neighborhoods also requires a minimum warranty period, so check with your HOA before you start.

Rebates and Incentives You Might Miss

Austin Energy rebates are available for cool roofs, which means roofs with high solar reflectance. A standing seam metal roof with a cool coating can qualify for up to $0.50 per square foot. Asphalt shingles with Energy Star-rated granules also qualify, but the savings are smaller. You have to apply before you start work, and the rebate is paid after inspection. I have seen homeowners leave $1,000 on the table because they did not know about the program.

The city also offers a free energy audit that can identify whether your current roof is costing you in cooling bills. If you are doing a replacement, that audit can help you decide whether to add R-38 insulation or upgrade to a ridge vent system. The audit alone is worth the hour it takes.

The Real Difference Between New and Replacement

At the end of the day, the biggest difference is control. New construction lets you design for a 40-year roof, integrate the HVAC rough-in, choose the underlayment, and set the slope for the material. Replacement is about making the best of what you have, which is often fine for another 20 years. But if you are building new, do not let the builder default to the cheapest option. Spec the ice and water shield, the drip edge, the Class 4 wind rating, and the ridge vent. Those are the details that make a roof last in Austin.

This Austin Roofing Company construction guide is meant to give you a clear picture of what 2026 looks like for both paths. The numbers change every year, but the principles hold. Know your permit timeline, understand your warranty options, and make the design decisions that you cannot undo once the deck is down. That is what separates a roof that survives a Texas summer from one that ends up on a repair list before the loan is paid off.