A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Bellaire, TX
Adding an ADU in Bellaire means working with tight, fully developed lots where most homes sit on 5,000 to 7,500 square feet and every remaining foot of yard counts. Hot, humid summers and the city’s strict 2019 accessory dwelling unit ordinance shape nearly every design decision here, from foundation height to cooling load. We’re Sutton ADU Builders, and we price Bellaire projects the same way we build them: with a written number in your hand before any work starts. Call (940) 242-3207 and we’ll walk through what fits your lot.
Why Bellaire Homes Are Different
Bellaire’s housing stock runs heavily to single-family ranch and mid-century homes from the 1940s through the 1960s, and a good share of those lots have seen teardown and rebuild activity over the last two decades. That split matters when you’re adding an ADU: your new structure may need to sit comfortably next to a 60-year-old ranch or match the massing of a brand-new custom build. We look at rooflines, side setbacks, and how the addition will read from the street before we ever quote a price.
The climate adds another layer. Bellaire gets heavy Gulf Coast rain, and the soil here stays wet. That means flood-resistant foundation details and moisture management on the envelope aren’t optional add-ons; they’re baseline work for any ADU that will still be dry in ten years. Cooling is the other big one. A detached unit or garage conversion in Bellaire needs high-efficiency HVAC sized for our humidity, not just our heat, or the interior will never feel right in August.
The city’s 2019 ordinance sets the ground rules tightly. An ADU can reach 1,000 square feet or 15% of lot area, whichever applies, but only on lots of at least 5,000 square feet and only with owner-occupancy on the property. That means the typical Bellaire ADU conversation starts with the lot dimensions and a copy of the survey, not with a catalog of floor plans.
Our Main Bellaire Services
Most Bellaire homeowners come to us with one of three goals: add square footage to the existing house, build a detached ADU in the yard, or convert and expand usable space for family. Each service has its own Bellaire page with pricing and process details.
Home Addition Contractor in Bellaire
Attaching new square footage to a Bellaire ranch or mid-century home means respecting the existing foundation line, roofline, and drainage slope. Our Home Addition Contractor in Bellaire page covers how we handle foundation tie-ins on older slabs, what the city will ask about during permit review, and real price ranges for common addition sizes on Bellaire lots.
ADU Builders in Bellaire
Detached ADUs in Bellaire live and die by the 2019 ordinance: your lot must be at least 5,000 square feet, the unit size is capped by lot area, and owner-occupancy is required. Our ADU Builders in Bellaire page explains how we evaluate your specific lot, where prefab brands like Mighty Buildings and Boxabl can shorten timelines, and what a Bellaire ADU realistically costs from foundation to final inspection.
Room Addition Contractor in Bellaire
A single room addition, whether it’s a primary suite, a home office, or an expanded kitchen, touches the same systems as a larger build but with a smaller footprint and a faster permit path. The Room Addition Contractor in Bellaire page details how we phase a room addition so your household keeps functioning, what Bellaire inspectors look for on final walkthrough, and typical project lengths.
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 Bellaire
We work with Mighty Buildings and Boxabl panelized systems for Bellaire lots where access is tight, and we handle Plant Prefab for homeowners who want a fully custom interior. Tuff Shed conversions remain a practical option when the existing structure is sound and the goal is a simple, permitted studio. See our brands for a full rundown of what each system handles best.
Pricing for ADU Company in Bellaire, TX
| Service | Typical Range in Bellaire |
|---|---|
| Detached ADU (600 – 750 sq ft) | $180,000 – $260,000 |
| Detached ADU (750 – 1,000 sq ft) | $260,000 – $340,000 |
| Prefab ADU (Mighty Buildings or Boxabl) | $150,000 – $230,000 before site work |
| Garage conversion to ADU | $95,000 – $150,000 |
| Tuff Shed conversion to ADU | $70,000 – $110,000 |
| Attached home addition (400 – 600 sq ft) | $130,000 – $200,000 |
| Attached home addition (600 – 900 sq ft) | $200,000 – $290,000 |
| Primary suite addition (300 – 450 sq ft) | $110,000 – $170,000 |
| Room addition (200 – 350 sq ft) | $75,000 – $125,000 |
Bellaire prices run higher than the regional average for two reasons: the city’s permit and inspection process demands detailed engineering documentation, and our wet-soil conditions push most projects toward pier-and-beam or reinforced slab foundations. On every one of these lines, you receive a written price before any work begins, and the number doesn’t change unless you change the scope.
Neighborhoods We Serve in Bellaire
We build across Bellaire’s residential grid, from the streets near Bellaire Boulevard up to the Braes Bayou corridor and from Newcastle out toward the West Loop side. Response time for an initial estimate visit in Bellaire is typically two to four business days depending on our current schedule.
- Bellaire Terrace
- Linden Lea
- Bellaire Gardens
- Southdale
- Braeburn Club Estates
Service Area – Cities Near Bellaire
Beyond Bellaire, our crews cover the surrounding metro. We serve Houston, TX for inner-loop additions, Fresno, TX for larger-lot builds, Pearland, TX for newer construction areas, and Webster, TX for homes near the bay. If your city isn’t listed, call and we’ll tell you straight whether we can take the project.
Serving Bellaire, TX - Our Local Coverage Area
We’re based in the Bellaire 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 Bellaire
Yes. Bellaire’s 2019 ordinance requires the property owner to live on the lot, either in the main house or the ADU, for the unit to be permitted. This keeps ADUs from becoming pure rental properties on absentee-owned lots, and it shapes how we design for families planning to age in place or house adult children.
Expect Bellaire plan review to take three to six weeks for a detached ADU, depending on the complexity of the foundation design and whether the city requests revisions. Attached additions and room additions typically move faster. We submit the drawings, manage the review comments, and pull the permit as part of the project. Call (940) 242-3207 for a timeline based on your specific scope.
No, unless you change the scope yourself. The written price you receive before work begins covers the work described in that quote, and we don’t pass surprise change orders back to you. If Bellaire’s inspector requires something outside the original scope, we bring you a change order with a number attached before we proceed.
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 Bellaire Customers Say
"Itemized estimate with allowances laid out. Final cost was within a hair of the quote."
- Naomi R."Insulated the walls and ceiling properly. It stays comfortable even in July."
- Tamika W."Good quality build. One delay on cabinets, but they gave a realistic new date and kept to it."
- Gordon B.
