A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Schertz
A home addition in Schertz typically runs $95,000 to $280,000 depending on whether you’re adding a single bedroom, a sunroom, or a full second story. Most projects take 3 to 7 months from permit to final walkthrough, and the fastest way to a real number is a written line-item quote before you commit to anything. We’re Benson ADU San Antonio, and we coordinate crews into Schertz every week from our San Antonio office, so when you call (430) 258-2928 a live person picks up, not a voicemail tree.
Schertz is its own animal. It’s not just another San Antonio suburb. The 1970s and 80s ranch homes in neighborhoods like Schertz Hills sit on lots big enough to add real square footage, but the city’s owner-occupancy rule for ADUs and the wind-load requirements for detached structures change what a compliant quote has to include. We know which lots off FM 3009 have septic systems that limit foundation placement. We know which HOAs in newer subdivisions won’t let you put a bump-out within 10 feet of a property line. That local knowledge is the difference between a project that sails through inspection and one that stalls for months.
Get a written price before you decide. That’s the whole point of this page. Call (430) 258-2928 and we’ll walk you through what your specific lot can actually support.
Why Benson ADU San Antonio Is Schertz’s Preferred Home Addition Contractor Company
We run background-checked, uniformed technicians on every job, so when a crew shows up on Schertz Parkway or off Borgfeld Road, you know exactly who’s walking onto your property. Our Home Addition Contractor team works under The Relay Visibility Guarantee: a written price before any work starts, live tracking while the job is underway, and a 365-Day Done Right Promise stamped on every project. If something isn’t right within a full year, we make it right, in writing.
Schertz homeowners deal with a specific set of headaches that contractors from outside the area often miss. The city’s 2021 ADU ordinance caps additions at 1,200 square feet on lots over 10,000 square feet, and only if the owner lives on the property. We check that first, before we ever quote you, because a permit rejection costs you weeks and money. Homeowners tell us the same thing: another contractor gave them a verbal price, then the written bid came back 30% higher. Our first quote is the written quote. No revisits to the number after we “get into it.”
We’re a member of the Relay Home Co. family, founded 2006, and led by Troy Eastman. Each location is independently owned and operated, but every one runs on the same promise: nothing verbal, everything on paper.
Bedroom Addition Contractor in Schertz
A Bedroom Addition Contractor in Schertz handles what’s usually a 200 to 500 square foot build: framing, electrical, HVAC tie-in, and drywall, plus the foundation work that Schertz’s clay-heavy soil demands. Homeowners add a bedroom when a parent moves in, when a second kid arrives, or when a guest room stops being optional. In Schertz, a bedroom addition runs $95,000 to $185,000, and the price moves based on whether you’re tying into existing HVAC or running a new mini-split line from the panel.
Foundation and Soil Conditions
Schertz sits on expansive clay soils that shift with moisture. A bedroom addition on a slab needs proper drainage and sometimes deeper piers, especially in older sections of town where the original home was built to a looser standard. We bring in a soils report before finalizing any quote. That’s not an upsell. It’s the difference between a bedroom that stays level and one that cracks within two years.
What the Quote Includes
Every bedroom addition quote from us includes the foundation plan, wind-rated tie-downs where code requires them, electrical subpanel work, and the permit drawings. Not a line on our invoice says “additional as needed.” If the plan changes because you change it, you approve the change in writing first. Troy Eastman set that policy, and it applies to every Schertz job.
Sunroom Addition in Schertz
A Sunroom Addition in Schertz gives you a conditioned glass-walled room that handles the Hill Country light without baking you out of the house. We see sunrooms added most often to homes on larger lots in places like Fairhaven and Schertz Hills, where the backyard has south or west exposure and the homeowner wants a room that feels outside without the mosquitos and humidity. Expect $65,000 to $145,000, depending on glass package, size, and whether you run HVAC to the space.
Moisture and Glass Performance
Schertz summers are brutal: 90-plus degrees with high humidity from April through October. A cheap sunroom with standard glass and a basic moisture barrier turns into a greenhouse in July and sweats in the spring. We spec low-e insulated glass and vapor barriers rated for the Gulf Coast humidity belt. That’s not an upgrade for us. It’s the standard, because anything less fails the building envelope in this climate.
Permit Path for Sunrooms
In Schertz, a sunroom that’s attached to the house typically counts as conditioned space, which means the city reviews the thermal envelope and the tie-back to the existing structure. An unpermitted sunroom can show up on a title search when you sell, and then you’re paying to fix it retroactively. We pull permits on every sunroom, and we walk you through the inspection order so there are no surprises.
Trusted Brands We Service in Schertz
We build with product names you can research yourself before you ever sign. On Schertz jobs we frequently use James Hardie fiber cement siding for its wind and moisture performance, plus prefab panels from Plant Prefab and Boxabl when the lot is right for a faster build. We stock local material runs into Schertz weekly, so trim, flashing, and panel replacements don’t wait on a two-week special order from out of state. You get a curated set of options, not a take-it-or-leave-it product, and every option comes with a written price attached.
Common Home Addition Contractor Problems We See in Schertz Homes
- Skipped wind-rated tie-downs. A detached addition in Schertz that lacks proper anchors is vulnerable to the severe storms that roll through in spring and fall. Cheap quotes leave these out, and the job fails inspection on the first pass.
- Permit rejection over owner-occupancy. Schertz’s ADU ordinance requires the owner to live on the property for an ADU over a certain size. Contractors who don’t check this before pulling permits cost homeowners weeks of delay and re-filing fees.
- Standard moisture barriers in a Gulf Coast humidity zone. Schertz’s hot, humid summers mean the framing in a new addition needs a moisture-resistant envelope or it rots. We see mold in additions that were built with the same barrier you’d use in El Paso.
- HOA conflicts on bump-outs. Several subdivisions on the west side of Schertz restrict how close an addition can sit to a property line. We check HOA bylaws before quoting, because a stop-work order from an HOA is uglier than any city inspection fail.
Pricing for Home Addition Contractor in Schertz, TX
Here are the ranges we quote most often for Schertz homeowners:
- Bedroom addition: $95,000 to $185,000
- Sunroom addition: $65,000 to $145,000
- Second story addition: $160,000 to $280,000
- Bump-out addition: $50,000 to $110,000
- Bathroom addition: $45,000 to $95,000
- Garage addition: $70,000 to $140,000
Your final price moves on lot access, soil conditions, HOA review requirements, and whether you’re tying into existing systems or running new electrical and HVAC. What it doesn’t move on is us changing the number after we start. We give you a fixed written price before the first permit is filed. Call (430) 258-2928 for a free estimate and we’ll put the exact number in front of you, in writing, with the permit and inspection steps itemized.
We Also Serve Cities Near Schertz
Our crews regularly work in Universal City, Converse, San Antonio, and Bulverde. If you’re on the edge of Schertz or just over a city line, call us anyway. The same written-price guarantee applies everywhere we run crews, and we can tell you quickly whether your lot falls in our service area. See our Home Addition Contractor in Schertz coverage details for how we handle jobs across the metro corridor.
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 Home Addition Contractor in Schertz
Yes, in most cases. Schertz code requires wind-rated tie-downs on the new portion of the structure, attached or not, because high wind loads transfer across the connection point. A compliant quote includes the anchor spec and the engineering letter that goes with it. Call (430) 258-2928 and we’ll show you exactly what that line item covers.
Under the 2021 ordinance, Schertz permits ADUs up to 1,200 square feet on lots over 10,000 square feet. On smaller lots, the allowable size shrinks, and on any ADU the owner must live on the property. That owner-occupancy rule is the first thing we check on any addition that could be classified as an ADU.
Maybe, but you need to read the bylaws first. Several Schertz HOAs restrict setback distances, exterior materials, and even the color of siding on additions. We pull the HOA’s design review requirements before quoting, so you’re not fighting a stop-work order mid-project. Get a free estimate and we’ll flag any HOA issues specific to your subdivision.
Keep the engineering letter, the wind-load rating on the anchor system, and the final inspection sign-off from the city. We include a documentation packet with every project that has wind-rated components. That packet is what you hand to your insurance agent if premiums or coverage questions come up after a storm. Call (430) 258-2928 for a quote that includes this documentation by default.
The typical order is: foundation and soil inspection, framing inspection (which includes the wind-load anchors), rough electrical and plumbing, insulation and moisture barrier, then final building inspection. Missing one in sequence means rework. We schedule and attend every inspection, and we give you the sign-off record at the end. Estimates are free at (430) 258-2928.
Written by Troy Eastman, Owner at Benson ADU San Antonio, serving Schertz and the surrounding metro corridor with written-price home additions since 2006.
