How Much Does a Roof Replacement Cost in San Antonio? (2026 Guide)

Roofers price by the square, and one square equals 100 square feet of roof surface. That is the roof itself, not the floor plan of your house. Overhangs, porch roofs, garages and the slope of the roof all add surface area, so a home with 2,000 square feet of living space can easily have 25 to 30 squares of roof or more.

Pitch matters too. A low, walkable slope is faster and safer to work on. A steep roof needs more safety equipment, more time per square and often more waste from cutting material, so the same size roof can cost noticeably more when it is steep.

For budgeting only, many San Antonio area homeowners see an asphalt shingle replacement on a typical single-family home land somewhere in the high four figures to the low or mid five figures. Smaller, simple roofs sit at the lower end, while larger homes with several hips, valleys and steep sections climb higher.

Metal roofing generally costs more up front than shingles. Exposed fastener panels such as R-panel often fall below standing seam, and standing seam is typically one of the higher priced residential options because of the panel material, the trim work and the labor involved. Flat and low slope roofs (roll roofing or TPO) are priced on their own terms, mostly by size, drainage and what is underneath.

Treat these as rough market ranges, not a price from Alanis Roofing. Material costs change, and the details of your specific roof decide where you actually land.

Your material choice sets the baseline. Architectural shingles, like the 30-year shingles common on homes around here, are the most popular choice for residential roofs because they balance cost, looks and performance. Metal costs more to install but is chosen by many South Texas homeowners for how it handles sun and heat and for its long service life.

If you are torn between the two, it helps to compare them on how long you plan to stay in the home, the look you want and your budget today. We cover that in detail in our metal vs shingle guide.

Most replacements start with removing the old roof. If there are two layers of shingles already, tear-off takes more labor and more disposal. Once the old roof is off, the roofer can see the decking, the plywood or boards the roof is nailed to. Soft, rotted or delaminated decking has to be replaced before a new roof goes on, and that is something nobody can price precisely until the roof is open.

A good estimate explains how decking replacement will be handled if it is needed, so there are no surprises halfway through the job. Ask about this before you sign anything.

A roof is more than shingles or panels. Ridge vents, turbine vents and exhaust vents keep the attic from turning into an oven in a Texas summer, which protects the roof and helps your energy bills. Pipe boots seal around plumbing vents, flashing seals around chimneys and walls, and drip edge protects the edges of the roof deck.

Each of these details adds some cost, and each one is also a common source of leaks when it is skipped or done in a hurry. When you compare estimates, check that they include the same scope. A lower number that leaves out new flashing or vents is not really cheaper.

Online calculators cannot see your decking, your pitch, your vents or how many layers are on the roof now. A roofer on site can measure the real surface, look at the attic, check for soft spots and tell you what the job actually needs.

Alanis Roofing offers free estimates with no trip fee across Devine, San Antonio, Castroville, Hondo, Lytle, Natalia, Uvalde, Atascosa and the rest of South Texas. Andres, who has been roofing for 26 years, talks with you directly and walks you through what he sees, so you can make a decision with real numbers instead of guesses.

Do not wait for a small leak to become a rotted deck. Catching problems early is the simplest way to avoid a bigger bill. Get more than one estimate if you want, but compare scope line by line rather than only the total.

Ask how the crew protects your yard, landscaping and driveway, and how cleanup is handled. And if the roof is being replaced, it is the cheapest time to fix ventilation, since the roof is already open.