A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Schertz, TX
Adding an ADU in Schertz means working around wide lots, older septic systems in pockets of town, and a city rule most homeowners don’t know about until their first estimate: detached units only get approved when the owner lives on the property. Schertz jobs rarely follow a one-size-fits-all plan because the housing stock swings from 1970s ranch-style homes on half-acre lots to newer HOA subdivisions with their own restrictions. If you’re researching costs and feasibility, call us at (430) 258-2928 and we’ll walk through what’s realistic for your specific lot before you spend a dollar.
Why Schertz Homes Are Different
Schertz grew as a bedroom community for San Antonio and Randolph AFB, and that heritage shows in the housing. Many homes in neighborhoods like Schertz Hills and Fairhaven sit on large, once-rural lots platted decades before modern subdivision standards existed. Some of those older properties still run on septic and were never connected to city sewer, which directly affects where an ADU can sit and whether a perc test will be required before permits move forward.
The other half of Schertz is newer: master-planned communities with HOAs that maintain architectural review boards, and some outright restrict detached ADUs regardless of what the city allows. The 2021 ADU ordinance permits units up to 1,200 square feet on lots over 10,000 square feet, but the owner-occupancy requirement catches a lot of people off guard. You have to live on the property to build a detached unit as an ADU. If you’re buying a second property specifically to rent both homes, that’s a different conversation and may not qualify. A quick lot check and HOA review early on saves months of planning work.
Then there’s the climate angle. Hot, humid summers in Schertz mean any detached unit needs serious mechanical cooling, not a window unit and hope. We also see occasional severe storms roll through from the west, so wind-rated tie-downs and moisture-resistant detailing on exterior walls and rooflines matter more here than they would in a drier, calmer part of Texas.
Our Main Schertz Services
The two most common reasons Schertz homeowners call us are a separate ADU in the backyard or a home addition that attaches to the existing house. Here’s what each one actually involves on the ground in Schertz.
ADU Builders in Schertz
An ADU in Schertz is a fully self-contained living unit: its own kitchen, bathroom, separate entrance, and usually its own utility connections. Most Schertz ADUs we quote are detached backyard structures, which means grading, foundation work, new electrical service, and septic or sewer tie-ins depending on your street. On a lot in Schertz Hills with septic, that utility conversation happens before we ever finalize a floor plan. For rental income or a place for parents, a prefab panel system like Boxabl or Plant Prefab can compress the build timeline significantly compared to site-built framing. ADU Builders in Schertz covers this in more detail.
Home Addition Contractor in Schertz
A home addition attaches to your existing footprint and ties into the current roofline, foundation, and HVAC. In Schertz, this usually means either expanding a living area on a 1980s or 90s ranch home or adding square footage inside a newer subdivision where HOA rules make detached structures complicated. Foundation work in this area is predictable but not trivial; clay-heavy soils swell and shrink with moisture, so we plan footings accordingly. A written price before work starts matters here because additions live or die on sequencing, and a vague verbal estimate can double by the time drywall goes up. Home Addition Contractor in Schertz has full pricing ranges.
Room Addition Contractor in Schertz
A room addition is the smallest version of the same idea: a single bedroom, office, or flex space with a handful of finishes. In Schertz, the most common requests are a home office with its own exterior door or a first-floor bedroom for aging parents. These jobs move faster than a full addition but still involve permits, foundation, electrical, and matching the existing roofline. On a 1970s home in Schertz, matching existing exterior siding and trim takes more care than homeowners expect, and it’s one reason our written quotes include the finish-match scope up front. Room Addition Contractor in Schertz explains what a room addition typically costs here.
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 Schertz
We build with prefab systems from Boxabl and Plant Prefab, plus Tuff Shed structures where the scope fits a simpler build. Exterior cladding often specs James Hardie fiber cement, which stands up to Schertz humidity better than vinyl. Our brands page has full details on each system.
Pricing for ADU Company in Schertz, TX
| Service | Typical range in Schertz |
|---|---|
| ADU construction (turnkey) | $180,000 – $320,000 |
| Prefab ADU (Boxabl or Plant Prefab) | $150,000 – $260,000 |
| Garage conversion to ADU | $90,000 – $160,000 |
| Home addition (attached, basic) | $120,000 – $220,000 |
| Home addition (attached, mid-range) | $220,000 – $360,000 |
| Room addition (single room) | $60,000 – $120,000 |
| Second-story addition | $220,000 – $400,000 |
| Kitchen addition | $80,000 – $180,000 |
| Bathroom addition | $40,000 – $90,000 |
| Accessory structure (Tuff Shed finished) | $30,000 – $70,000 |
What moves the number in Schertz beyond these ranges is usually septic, site grading on sloped lots, or HOA architectural requirements that push material upgrades. The price you get from us is written before any work starts, and it doesn’t shift mid-project on a change-order technicality.
Neighborhoods We Serve in Schertz
We work throughout Schertz, from the older lot-and-septic properties on the north side to the newer subdivisions closer to the Cibolo line. Each pocket has its own permitting reality, and our quotes reflect that specificity instead of a city-wide average.
- Schertz Hills
- Fairhaven
- Ashley Place
- Rio Vista
- Carriage Crossing
Across the Schertz area, you’ll usually get a real person on the phone when you call, and we schedule site visits during normal business hours rather than giving you a four-hour window that never materializes.
Service Area – Cities Near Schertz
If you’re just outside the Schertz city limits, we also serve nearby communities including Universal City, TX, Converse, TX, San Antonio, TX, and Bulverde, TX. Call us at (430) 258-2928 and we’ll confirm coverage for your address.
Serving Schertz, TX - Our Local Coverage Area
We’re based in the Schertz 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 Schertz
Yes. Schertz’s 2021 ADU ordinance only allows detached ADUs up to 1,200 square feet on lots over 10,000 square feet when the property owner occupies either the main home or the ADU. That rule doesn’t apply to attached additions, which are treated as part of the primary residence. Call (430) 258-2928 if you’re unsure which category your project falls under.
Permit timelines vary by project scope and whether your property is in an HOA with its own review process. Older septic lots sometimes need an additional health department sign-off before building permits are issued. The plan-and-price phase is where we identify those requirements so there aren’t surprises later.
We cover the entire Schertz area, including older neighborhoods like Schertz Hills and Fairhaven plus newer subdivisions across the city. If you’re in an HOA community, we’ll review the covenants early so the design fits within both city and HOA rules from the start. Estimates are free, so call (430) 258-2928 to get your lot checked.
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 Schertz 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.
