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 Stafford
Most Stafford homeowners who call us are already frustrated. They’ve had a contractor quote one number, start the job, then hand over a change order that doubled the price. Or they’ve spent three weeks leaving voicemails for someone who won’t call back. A home addition or ADU in Stafford typically runs $45,000-$130,000, and the biggest risk isn’t the build itself, it’s hiring someone who treats your money like it’s already spent. We’re Barrett & Sons Construction, and we do this differently. Tom Barrett’s name is on the truck, his sons run the crews, and every price change arrives in writing before a single nail moves. Call (877) 610-1318 and you’ll get a live person, not a call center.
Why Barrett & Sons Construction Is Stafford’s Preferred Home Additions & ADU Company
We’ve been building in the Houston area since 1998, and the work we see in Stafford is unique. This is a city built around commercial and light industrial property, not sprawling subdivisions. That means the contractors who understand Stafford understand Fort Bend County commercial codes, tenant improvement scopes, and the specific permitting path that a mixed-use or residential addition requires here. Our Home Additions & ADU team has walked those exact jobs along US-90A and the Southwest Freeway corridor.
Tom Barrett lives close enough to drive through Stafford on any given week. When a homeowner near Dulles Avenue or a property owner off Kirkwood Road calls with a question, they’re not waiting on a regional office to route a ticket. They get Tom. They get a written scope. And they get the 90-Day Done Right Promise on paper, not as a sales line. Stafford customers have told us the same thing for years: they’d rather pay a fair price with a name attached than gamble on a low bid from someone who disappears.
Our Home Additions & ADU Services in Stafford
ADU Design & Permitting
Stafford’s zoning and building rules are different from what you’ll find in Sugar Land or Missouri City. Because the city prioritized commercial development for decades, residential ADU projects often touch commercial-adjacent code requirements, and the permitting path can get confusing fast. We handle the drawings, the permit package, and the inspections. You get a written scope before we start, and every inspection is signed on record. If you’re planning an ADU in the 77477 or 77497 zip codes, we can walk you through what Stafford specifically requires, down to the setback and utility connection details.
Garage Conversion ADU
Many of Stafford’s 1970s-1990s slab-on-grade homes have attached garages that sit empty or serve as storage. Converting one into a rentable unit or an in-law suite typically runs $30,000-$80,000 here. The biggest local factor is the slab. Stafford sits on Beaumont and League City clay soils, and those soils expand and contract with every wet-dry cycle. Before framing begins, we check the existing concrete for movement and cracking. If the slab has shifted, we address it in writing before the first inspection, not after a surprise discovery mid-project.
New Detached ADU
A new detached ADU in Stafford is a serious investment, generally $90,000-$220,000. That’s the honest range, and it’s driven by site prep, utility runs, and foundation work. On the low-lying lots near Brays Bayou tributaries, FEMA flood zone designations can push the finish floor elevation higher than a homeowner expects, and that affects cost before framing ever starts. We build these to code the first time, with permits pulled and inspections signed. No shortcuts, no “we’ll handle that later” conversations.
Junior ADU & Interior Conversion
Sometimes the right answer is already inside the house. A junior ADU, a converted bonus room, or an enclosed patio turned into living space can add square footage without a full foundation pour. These jobs in Stafford often run $45,000-$130,000 depending on scope. We look at how the existing roofline ties in, what the electrical panel can actually carry, and whether the space meets egress and ceiling height rules before we quote. If a floor plan doesn’t work, we’ll say so and show you why in writing.
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 Stafford
We don’t put mystery materials on a Stafford job. For hardscape and paver work connected to additions, we install Techo-Bloc and Cambridge Pavers because they hold up to Houston’s wet-dry soil cycles better than knockoffs. For concrete and site prep, we use Quikrete products that our crews know how to place correctly, even when the Beaumont clay is misbehaving. When a Stafford customer asks what brand we’re using, we can name it. You can look it up. That’s the point.
Common Home Additions & ADU Problems We See in Stafford Homes
- Clay soil slab movement. Stafford sits on expansive clay that swells in wet months and shrinks in droughts. A 1980s slab home in 77477 that’s never had its foundation checked is a real risk for an addition, because the new structure’s footing will react differently than the old one. We evaluate the existing slab before we design anything.
- Flood zone surprises near Brays Bayou tributaries. Hurricane Harvey showed what water can do in the low-lying parts of Stafford. Additions in a flood-prone pocket may require elevated finish floors and specific envelope details. You want that figured out before the permit, not after inspection.
- Aging electrical panels in 1970s stock. A home built in Stafford in the 70s or 80s wasn’t wired for a modern ADU with a kitchenette, mini-split, and laundry. If your panel is original, adding a unit may require a service upgrade. We tell you at the estimate, in writing, so it’s budgeted from day one.
- Mixed-use confusion. Stafford’s residential pockets sit close to commercial corridors along US-90A and US-59. Some properties are zoned or classified in ways that blur residential and commercial requirements. A contractor who only builds in subdivisions will get lost. We’ve walked these files before and know what the city asks for.
Pricing for Home Additions & ADU in Stafford, TX
Here’s what you should expect to budget in Stafford. A room addition runs $45,000-$130,000. A garage conversion ADU runs $30,000-$80,000. A new detached ADU runs $90,000-$220,000. A junior ADU or interior conversion lands in the $45,000-$130,000 range. What moves the number here isn’t just square footage, it’s soil conditions, flood elevation, and utility access. We give free estimates, and every allowance is written down before work starts. The allowance that isn’t on paper is a surprise waiting for a date. Call (877) 610-1318 and we’ll walk your specific lot and tell you the real number, not a hopeful guess.
We Also Serve Cities Near Stafford
Our crews work in Stafford every week, and we regularly take on projects in Missouri City, New Territory, Sugar Land, and Alief. If your property is in one of those areas, the same team and the same written-scope process apply. While you’re here, take a look at our Kitchen Remodeling in Stafford and Bathroom Remodeling in Stafford pages if your addition includes either of those trades. We also maintain a full overview of our Stafford service area if you want to see everything we handle locally.
Serving Stafford, TX - Our Local Coverage Area
We’re based in the Stafford 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 Stafford
Most Stafford projects can be scheduled within two to four weeks once the permit is approved and the scope is signed. The permit timeline depends on the city’s current review queue and whether your lot falls in a flood zone, which can add a review step. Call (877) 610-1318 and we’ll give you a realistic start window after we see your property.
Yes. We work throughout Stafford, including the 77477 and 77497 zip codes, from the residential streets near Dulles Avenue to the commercial properties along Kirkwood Road and US-90A. If you’re not sure whether your address falls in our service area, call us and we’ll confirm it on the spot.
It won’t change unless you ask for a change. Any scope adjustment arrives as a written change order before the work happens. That’s been our rule since 1998 and it’s on every contract. No surprise invoices at the end. If it isn’t on paper, it isn’t part of the job.
Not necessarily more expensive, but the variables are different. Stafford’s mix of commercial-adjacent zoning and clay soil conditions can add site work or permit steps that a typical Sugar Land subdivision lot doesn’t face. A Stafford ADU usually lands in the $90,000-$220,000 range, and the best way to get your exact number is a free estimate. Call (877) 610-1318 and we’ll put it in writing.
Every project carries the 90-Day Done Right Promise. It’s written on the contract. If something isn’t done right, Tom Barrett comes back and makes it right with one call. That applies to work in Stafford just like everywhere else we build.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Stafford and the surrounding communities since 1998.