Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Anthony
Adding square footage or building an ADU in Anthony, TX typically runs $45,000-$130,000 for a room addition and $90,000-$220,000 for a detached ADU. The single biggest variable here isn’t the lumber package or the labor rate. It’s the state line. Anthony sits directly on the Texas-New Mexico border, and before we pull a single permit we confirm exactly which side of the line your parcel is on. That one step changes the licensing, the inspection path, and the lien law that applies to your job. If you’re thinking about a home addition or ADU in ZIP 79821, call (877) 610-1318. Tom Barrett and his sons answer the phone, and they’ll talk you through what applies to your property before you spend a dime.
Why Barrett & Sons Construction Is Anthony’s Preferred Home Additions & ADU Company
We’ve been owner-operated since 1998, and in Anthony that matters more than in most places. When a client near the state line asks whether a Texas license covers the whole job, the answer depends on the parcel, not the phone number you called. We check that before anything else. Homeowners in Anthony who have already been burned by a company that quoted one number on the phone and handed them a different contract at the door tend to ask harder questions up front. We’d rather you ask them. Tom Barrett publishes his name, his address, and his license number. Look it up before you sign anything. Our crews are background-checked and they carry the Barrett & Sons name on their shirts, not a subcontractor’s logo. And every scope change, every allowance adjustment, every surprise found inside a wall gets priced and approved in writing before we touch it. Permits are pulled and inspections signed on every eligible job. The permit inspector works for you, not for me-that’s why I like him.
Our Home Additions & ADU Services in Anthony
ADU Design & Permitting
Designing an ADU in Anthony starts with jurisdiction. We confirm whether your parcel is in El Paso County, Texas or Doña Ana County, New Mexico before drawings begin, because the two states have different setback rules, different energy codes, and different inspection sequences. From there we handle the drawings, the submittals, and the permit package as one written scope of work. No surprises, no hand-waving about “we’ll figure it out during construction.” Anthony homeowners deserve a plan that matches the actual building department they’ll face.
Garage Conversion ADU
Converting an attached or detached garage into an ADU in Anthony often runs $30,000-$80,000, and the condition of the original slab drives a good part of that number. Many garages in Anthony’s 1970s through 1990s homes were built with slab-on-grade foundations that were never insulated, never waterproofed, and in some cases never permitted as living space. Caliche sits just below much of this area, which means any new utility trenching for a bathroom or kitchenette requires rock excavation equipment, not a standard trencher. We write the caliche work into the allowance up front so it’s on paper before the first day of digging.
New Detached ADU
A new detached ADU in Anthony gives you a clean build, but the site prep is anything but simple here. Caliche excavation for footings and utility lines is the most common cost driver we see, and it’s one that out-of-town contractors routinely underbid because they don’t know this soil. We bring rock trenchers and compactors sized for the job and we price the excavation honestly. New detached ADUs in Anthony typically land between $90,000 and $220,000 depending on square footage, finishes, and how deep the caliche runs on your lot.
Junior ADU & Interior Conversion
A junior ADU, usually a spare bedroom or basement-level space converted into a small independent living unit, is the most budget-friendly path for Anthony homeowners who need a rental unit or a place for an aging parent. It also triggers the fewest site-prep costs because you’re working inside the existing envelope. But opening an older Anthony wall almost always turns up something: outdated wiring, failed caulking baked hard by the Chihuahuan sun, or framing that was never permitted. We price the known work and we write allowances for what’s behind the drywall, so a code upgrade doesn’t become a bill you never agreed to.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Anthony
For hardscape and site-prep components on Anthony ADUs, we install Belgard and Techo-Bloc pavers, Quikrete concrete products, and Oldcastle retaining systems. These are materials you can look up, not mystery brands off a van. When an Anthony job calls for a paver patio beside the new ADU or a retaining wall to manage a sloped lot, we use products with published specs and local supply support. That means fewer delays and no surprises about what got installed while you were at work. If site prep or exterior finish work is part of your addition, you’ll know the brands before we break ground.
Common Home Additions & ADU Problems We See in Anthony Homes
- The state-line surprise: A homeowner assumes the job is in Texas, but the parcel is actually in New Mexico. We confirm parcel-level jurisdiction before pulling any permit, because a Texas license, inspection path, and lien rights don’t automatically cross the line.
- Caliche excavation nobody budgeted for: The calcium carbonate layer under Anthony’s surface turns a simple utility trench into a rock-excavation job. If the original scope doesn’t include specialized equipment, the schedule and the budget both blow out. We price caliche work before digging starts.
- Walls that hide outdated wiring: Opening a 1970s or 1980s Anthony home for a room addition regularly exposes aluminum wiring or unpermitted work from a previous owner. A permit-driven code upgrade gets triggered, and if it wasn’t in the allowances, it becomes a surprise bill. We write allowances for exactly this.
- Failed waterproofing on slab foundations: Homes here sit slab-on-grade, and decades of drainage issues around the perimeter often mean the slab edge has absorbed moisture. Before adding new framing, we inspect and correct what’s underneath. Adding square footage onto a compromised slab just moves the problem indoors.
Pricing for Home Additions & ADU in Anthony, TX
Here’s what we tell Anthony homeowners before the first site visit. The ranges below reflect what we’ve actually built in this market, including the caliche excavation, the permit work, and the finish level that holds up in this climate.
| Project Type | Typical Range in Anthony |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion | $30,000-$80,000 |
What moves these numbers is rarely the finish level. It’s what the site and the existing structure demand. Caliche depth changes excavation cost. The age of the home changes how much remedial work sits inside the walls. And whether your parcel falls under Texas or New Mexico rules changes the permit path entirely. We give you a written line-item quote, not a phone estimate. Scope in writing, allowances in writing, change orders in writing. Call (877) 610-1318 to schedule your free estimate. The estimate is free, and so is the advice about which side of the state line your project answers to.
We Also Serve Cities Near Anthony
Our Home Additions & ADU team works throughout Anthony and the surrounding border communities. We take projects in Canutillo, Fort Bliss, El Paso, and Homestead Meadows North. If you’re in one of those areas and thinking about an addition or ADU, the same rules apply: written change orders, permits pulled, and a live person on the phone at (877) 610-1318.
Serving Anthony, TX - Our Local Coverage Area
We’re based in the Anthony 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 - Home Additions & ADU in Anthony
We confirm parcel-level jurisdiction with the county assessor and building department before we pull any permit. Anthony sits on the Texas-New Mexico state line, and the physical address doesn’t always match the actual parcel boundary. A Texas-licensed contractor working on a New Mexico parcel without proper qualification faces licensing, inspection, and lien law exposure. We run this check on day one and never start a project until we know exactly which state governs the job. Call (877) 610-1318 and we’ll walk you through what applies to your address for free.
We stop, document it, and write a change order with a specific price and a specific allowance before anything else moves. When we opened up a 1980s slab-on-grade home for a detached ADU near the state line, we found aluminum wiring from a previous addition that was never permitted, and the caliche just below the surface forced us to bring in a rock trencher for the utility rough-in before we could even start the new subfloor. We wrote the wiring replacement and the caliche excavation into a change order with allowances, got the client’s approval in writing, and finished with a clean punch list and inspection sign-off on the Texas side only after confirming the parcel was 100% in El Paso County. That’s the standard on every Anthony job. Call (877) 610-1318 for a free estimate that includes written allowances for what’s behind the drywall.
Caliche excavation typically adds $2,500-$7,000 to a room addition in Anthony, depending on how deep the layer sits and how much trenching your project requires. The rock-hard calcium carbonate under this part of El Paso County means a standard trencher won’t cut it. We bring in rock trenchers and compactors sized to the job. If a contractor’s quote doesn’t mention caliche at all, ask them whether they’ve worked in ZIP 79821 before. We price it as a line item, not a surprise. Call (877) 610-1318 for an exact number on your lot.
Yes, and a permit is triggered the moment you add plumbing, electrical circuits, or a second means of egress. In Anthony, converting a garage into living space almost always means new utility service lines, and that means caliche excavation for the trenching. It also means bringing the original garage slab up to living-space code, which often requires insulation, vapor barrier, or structural corrections. Garage conversions in Anthony typically run $30,000-$80,000. Call (877) 610-1318 and we’ll give you a written breakdown of what your specific garage will cost to convert.
A second-story addition requires a structural engineering review of the existing slab and framing first, because many of Anthony’s 1970s through 1990s homes were never designed to carry a second floor. The slab-on-grade foundations common here were sized for single-story loads, and adding a story means either reinforcing the existing structure or carrying new loads independently. We bring in a licensed engineer, pull the permit, and price the reinforcement honestly before we frame a single wall. It’s not the cheapest conversation, but it’s the one that keeps the addition standing through the next hard freeze and the next hundred-degree summer. Call (877) 610-1318 to schedule your free estimate.
Get Your Home Addition or ADU Started in Anthony
If you’re in Anthony, TX and you’re ready to talk about a room addition, a garage conversion, or a new detached ADU, call (877) 610-1318. A live person answers, 24 hours a day, 7 days a week. We’ll set up a free estimate, confirm which state your parcel falls under, and give you a written line-item quote with allowances in writing. No surprise invoices at the end. No franchise dispatcher handing you to a stranger. Just Tom Barrett and his sons, on-site and accountable. Ask anyone on your street, or look up the license number yourself.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Anthony, TX since our founding in 1998.