A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Alamo Heights, TX
Adding an ADU in Alamo Heights means working within a city that has its own zoning code, its own design review board, and a housing stock full of 1920s-to-1950s homes with real architectural character. We’re Benson ADU San Antonio, and we help Alamo Heights homeowners plan accessory units that clear the city’s compatibility requirements without fighting the existing house. That usually means matching stucco, tile roofs, and the Spanish Colonial or Mediterranean lines already on the lot. Call us at (430) 258-2928 to talk through your property before you spend anything.
Why Alamo Heights Homes Are Different
Alamo Heights is not San Antonio. It runs on its own zoning ordinance, with a 40% maximum building coverage per lot and a design review process that asks new structures to look like they belong next to the main house. That single fact changes how we approach nearly every project here.
The housing stock tilts heavily toward single-family homes built from the 1920s through the 1950s: Spanish Colonial, Mediterranean, and Craftsman, with stucco walls, clay tile roofs, and deep front setbacks. Rear yards tend to be tighter than what you’d find in Terrell Hills or Olmos Park, which pushes many Alamo Heights homeowners toward garage conversions and attached ADUs rather than detached backyard cottages. The lots near Broadway are especially constrained, often shaded by mature oaks that the city takes seriously. We plan around tree protection zones from the first site visit, not after a permit application stalls.
Then there’s the ground itself. Alamo Heights sits on expansive clay soil that moves with moisture. That means foundation design matters more here than in areas with firmer base. A detached unit on the wrong slab will crack within a few seasons. We specify foundation work for clay movement as standard on Alamo Heights ADUs and additions, and we write that into the price from the start.
Our Main Alamo Heights Services
Most Alamo Heights homeowners call us for one of three things: a backyard ADU, a larger home addition, or a single-room bump-out. Each has its own page with costs and details, linked below.
ADU Builders in Alamo Heights
An ADU here is rarely a simple prefab drop. Alamo Heights requires the accessory unit to be architecturally compatible with the main house, which means we’re often matching stucco texture, roof pitch, window trim, and exterior color before the city will sign off. Garage conversions are the most common path on smaller lots, followed by attached units that read as part of the original home. We walk every Alamo Heights ADU through design review, setback checks, and the 40% coverage rule before you commit. Full details are on the ADU Builders in Alamo Heights page.
Home Addition Contractor in Alamo Heights
Home additions in Alamo Heights often mean expanding a 1940s or 1950s house without disturbing its original facade. We regularly add primary suites, kitchens, and family rooms to the rear of homes here, keeping the street-facing elevation intact. The clay soil and coverage limits require careful foundation and footprint planning. Because many Alamo Heights homes are on smaller lots, we focus on additions that add square footage without eating the whole yard. See costs and process on the Home Addition Contractor in Alamo Heights page.
Room Addition Contractor in Alamo Heights
A room addition in Alamo Heights is the fastest way to add a bedroom, office, or utility space when a full addition is out of budget. These projects usually attach to the existing structure, which helps with the city’s coverage and compatibility expectations. We handle the foundation, framing, HVAC tie-in, and exterior finish matching. On Alamo Heights homes with original stucco or Craftsman detailing, we match materials rather than patching a modern box onto an old house. The Room Addition Contractor in Alamo Heights page has the full breakdown.
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 Alamo Heights
We build with brands Alamo Heights homeowners can research before they commit. That includes Tuff Shed structures for studios and storage, James Hardie cladding for exterior walls that handle humidity, and Abodu or Cover prefab ADU lines when the lot and design review allow. See what we work with on our brands page. Materials are ordered after your plans are approved, which keeps lead times predictable.
Pricing for ADU Company in Alamo Heights, TX
| Service | Typical range in Alamo Heights |
|---|---|
| Prefab ADU (Abodu, Cover, or similar) | $180,000 – $320,000 |
| Garage conversion ADU | $140,000 – $240,000 |
| Attached ADU | $160,000 – $280,000 |
| Detached site-built ADU | $220,000 – $400,000 |
| Home addition (primary suite) | $120,000 – $220,000 |
| Home addition (kitchen expansion) | $90,000 – $180,000 |
| Room addition (single room) | $60,000 – $110,000 |
| Foundation work for clay soil | $15,000 – $35,000 |
What pushes price up in Alamo Heights is design review friction, clay-soil foundation requirements, and the cost of matching period finishes like original tile or custom stucco. What doesn’t push price up is surprise change orders. Our written price comes before any work starts, and it’s the price you pay.
Neighborhoods We Serve in Alamo Heights
We work across Alamo Heights and the immediate pockets homeowners ask about most. Our crews typically schedule Alamo Heights projects on a two-to-three-week lead time once plans are approved.
- Broadway corridor
- North Alamo Heights
- Patterson Avenue area
- Vanderbilt area
- Alamo Heights Terrace
Service Area – Cities Near Alamo Heights
Our Alamo Heights crews also handle projects in nearby cities when homeowners ask. We serve San Antonio, TX, Schertz, TX, Live Oak, TX, and Leon Valley, TX. Scheduling is coordinated from our San Antonio office, and crews arrive in uniform.
Serving Alamo Heights, TX - Our Local Coverage Area
We’re based in the Alamo Heights 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 Alamo Heights
After plans are finalized and permits are submitted, most Alamo Heights projects start within two to three weeks. Design review can add time depending on the city’s review queue. Call (430) 258-2928 for a current timeline on your specific lot.
Yes. Alamo Heights runs its own zoning and permitting process separate from San Antonio. Any ADU, addition, or room addition requires design review and a building permit. We handle the submittals and revision requests for you. Call (430) 258-2928 and we’ll check your property before you file anything.
We serve the entire city of Alamo Heights, from the Broadway corridor to the northern and eastern edges of town. If your property is inside city limits, we can quote it. Estimates are free. Call (430) 258-2928 to schedule yours.
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 Alamo Heights Customers Say
"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."Solid job. Cabinets arrived late but they adjusted the schedule."
- Eli K.
