A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in San Antonio, TX
Benson ADU San Antonio builds accessory dwelling units, home additions, and room additions across San Antonio, and the city’s housing stock makes the work here genuinely different from anywhere else in Texas. Older pier-and-beam bungalows in central neighborhoods call for different foundations than the slab-on-grade homes in newer subdivisions, and our written price covers that reality before any work starts. If you’re considering a backyard cottage or an extra bedroom, call (430) 258-2928 and we’ll walk you through what makes sense for your lot.
Why San Antonio Homes Are Different
San Antonio’s ADU growth isn’t an accident. The city’s population keeps climbing, and local Affordable Housing policies have relaxed ADU regulations and introduced fee waivers that make backyard cottages more practical here than in most Texas metros. For homeowners, that means a faster path from idea to permit for a rental unit or a place for aging parents.
What you’ll actually encounter under the house depends on where you are. In central neighborhoods like Monte Vista and Beacon Hill, many homes sit on pier-and-beam foundations that have shifted over decades. Before we build, we check leveling and moisture barriers carefully because a new ADU tied to a settling foundation becomes an expensive problem later. Older bungalows in Lavaca and King William show the same pattern, and the historic overlay districts bring their own design review steps. Out on the periphery, newer slab homes and larger lots create fewer surprises but tighter HOA rules to navigate.
Climate shapes material choices too. Hot, humid summers mean high-efficiency HVAC is non-negotiable in a San Antonio ADU, and we spec durable cladding options like James Hardie that hold up against heat and the occasional hailstorm. Shade orientation matters on small lots with limited setbacks, which is exactly where we start the design conversation.
Our Main San Antonio Services
Most San Antonio homeowners who call us are weighing two questions: whether an ADU pencils out for rental income or family, and whether an addition makes more sense than moving. Each service has its own page with pricing and process detail.
ADU Builders in San Antonio
San Antonio’s relaxed ADU rules and fee waivers make a backyard unit one of the most cost-effective ways to add living space in the city right now. We build backyard cottages with a written price before work starts, and we pair site-built options with prefab lines like Abodu and Plant Prefab so you’re not forced into a single product. On pier-and-beam lots in older neighborhoods, we handle foundation leveling and moisture barriers as part of the scope, not as a surprise change order. See ADU Builders in San Antonio for full pricing and timelines.
Home Addition Contractor in San Antonio
A home addition in San Antonio usually means tying a new wing onto an existing slab or pier-and-beam structure, and the engineering differences between the two change both cost and schedule. We account for San Antonio’s heat in the design, specifying high-efficiency HVAC and durable exterior materials so your added square footage feels comfortable in August and stays low-maintenance. Every addition starts with a written line-item price. Home Addition Contractor in San Antonio breaks down what a typical addition costs here.
Room Addition Contractor in San Antonio
Single-room additions are the fastest way to add a bedroom, office, or playroom without a full remodel. San Antonio homes built in the mid-century era often need some structural catch-up when we open a wall, and we inspect before we quote so the written price reflects the real condition of your house. We build with a fixed scope and a 365-Day Done Right Promise on the finished work. Room Addition Contractor in San Antonio has the numbers.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in San Antonio
We source and service prefab and materials brands San Antonio homeowners can research independently, including Abodu, Plant Prefab, Tuff Shed, and James Hardie cladding. Common components are stocked through our local supplier network, which keeps repair and warranty turnaround short across the metro. See our brands for the full line.
Pricing for ADU Company in San Antonio, TX
| Service | Typical range in San Antonio |
|---|---|
| ADU construction (site-built) | $180,000 – $450,000 |
| Prefab ADU (delivered and installed) | $150,000 – $350,000 |
| Garage conversion to ADU | $120,000 – $250,000 |
| JADU (junior ADU) | $90,000 – $160,000 |
| ADU foundation repair (pier-and-beam) | $8,000 – $20,000 |
| ADU HVAC installation | $8,000 – $14,000 |
| Home addition (ground-up) | $130,000 – $280,000 |
| Room addition | $60,000 – $140,000 |
| Permit fees and plan sets | $4,000 – $10,000 |
What pushes an ADU price up in San Antonio is usually the foundation. Pier-and-beam homes in central neighborhoods need leveling and moisture work that slab homes in newer subdivisions don’t, and that can add $8,000 to $20,000 before the structure goes up. Whatever the scope, every Benson ADU San Antonio project gets a written price before work starts, and that number does not change at the door.
Neighborhoods We Serve in San Antonio
Our crews work across San Antonio, from the historic districts downtown to the subdivisions ringing the outer loop. Local familiarity means we already know the permit paths and foundation types before we arrive.
- Monte Vista
- Beacon Hill
- Lavaca
- King William
- Alamo Heights
Response time for estimates and quotes across the greater San Antonio area is typically within one to two business days, depending on the season.
Service Area – Cities Near San Antonio
Our San Antonio crews also cover the metro’s surrounding communities for ADU and addition work, including Converse, TX, Universal City, TX, Schertz, TX, and Bulverde, TX. If you’re in one of these cities and planning a backyard cottage or room addition, call (430) 258-2928 for a free estimate.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in San Antonio
Yes. Our written price includes permit fees and plan sets, and we handle the full submission with the City of San Antonio. Fee waiver programs for ADUs apply in certain cases, and we flag them on your quote when your property qualifies. Call (430) 258-2928 for specifics on your lot.
Some San Antonio HOAs have restrictions on ADUs, especially in newer subdivisions. We review your HOA covenants before we quote so you aren’t paying for designs that won’t clear approval. Our written price covers only work that can actually be built. Call (430) 258-2928 to review your property’s rules with us.
Most ADU projects in San Antonio run four to seven months from permit submission to final inspection, with pier-and-beam foundation repair sometimes adding two to three weeks. Prefab options like Abodu or Plant Prefab can shorten the on-site build phase significantly. Your written estimate includes a schedule, and our real-time tracking keeps it visible. Call (430) 258-2928 for a free estimate and timeline for your property.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Antonio Customers Say
"Plumbing and electrical passed on the first inspection."
- Alan B."Room addition off the kitchen. Framing, drywall, and paint all done well."
- Wade L."Photos of each milestone, which I loved. Slab, framing, roof dry-in, each one came with a few pictures by text."
- Gwen D.
