Home Additions & ADU in Bellaire - One Fixed Price, Permits Handled

Fast, Reliable Home Additions & ADU Across Bellaire

Home additions and ADU construction in Bellaire typically run $45,000 to $130,000 for an addition, and $90,000 to $220,000 for a detached ADU. What makes Bellaire different is the city’s own building department, its post-Harvey flood elevation rules, and the scrape-and-build cycle that has transformed block after block. You can’t assume Houston’s permit process applies here, because it doesn’t. Barrett & Sons Construction has been building in this region since 1998, and our crews know Bellaire City Hall’s plan reviewers, setback rules, and drainage requirements well enough to keep your project moving. Call (877) 610-1318 for a free estimate and we’ll walk you through what Bellaire will actually approve.

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Why Barrett & Sons Construction Is Bellaire’s Preferred Home Additions & ADU Company

We’re an owner-operated company, founded in 1998, and Tom Barrett’s name is on the truck and on the contract. That matters in Bellaire, where the building department is stricter than most and the stakes on a five-figure addition are real. Our crew members carry the Barrett & Sons name on their uniforms, they’re background-checked, and Tom or one of his sons is on-site most days. Not a franchise dispatching whoever answers the phone.

Bellaire homeowners tell us the same story again and again. They got a quote from a Houston-based outfit that didn’t know the city has its own permit process. The job stalled at plan review, or got flagged for impervious surface coverage, or the contractor couldn’t get an inspection scheduled for three weeks. We don’t have those surprises, because we already know the people at Bellaire City Hall and we submit plans that pass the first time more often than not.

Every scope change, every allowance, every price adjustment comes to you as a written change order before work proceeds. If it isn’t on paper, it’s a surprise waiting for a date. That’s how we’ve done it for over 29 years, and it’s why Bellaire homeowners keep our number in their phones. Call (877) 610-1318 and a live person answers, 24/7. Not a voicemail box, not an out-of-state call center.

Our Home Additions & ADU Services in Bellaire

We focus on the work Bellaire actually needs: additions and ADUs that fit this city’s rules, this city’s lot sizes, and this city’s floodplain. Here’s what we handle most often in the 77401 and 77402 zip codes.

ADU Design & Permitting

Bellaire’s independent building department reviews every detached ADU for setback compliance, lot coverage, and finished-floor elevation above the Brays Bayou floodplain. Ours is a Home Additions & ADU team that submits plans with those rules accounted for from day one, because we’ve sat across the counter from Bellaire’s plan reviewers enough times to know what they flag. We pull the permit, we schedule the inspections, and we get sign-off before drywall goes up.

New Detached ADU

A new detached ADU in Bellaire usually runs $90,000 to $220,000, depending on size, foundation type, and site conditions. On a 1950s ranch lot in Southdale, we framed a 450-square-foot primary suite addition, but plan review flagged the existing driveway’s impervious coverage. We redesigned with a pervious paver driveway and raised the finished floor above the Brays Bayou floodplain, getting the Bellaire inspection sign-off before drywall. That’s the kind of thing you only learn by building here.

Garage Conversion ADU

Converting an attached or detached garage is often the fastest path to an ADU in Bellaire, especially on mid-century ranch lots where the garage already sits at the back of the property. Garage conversions run $30,000 to $80,000, but Bellaire’s lot coverage rules mean we have to verify the existing slab, roof pitch, and drainage before we commit to a plan. We bring a written scope before we bring a hammer.

Junior ADU & Interior Conversion

For homeowners who want a separate living space inside the existing footprint, a junior ADU or interior conversion is often the most cost-effective move. Think attached suite with its own entrance, kitchenette, and bath, carved from a den or oversized utility room. Bellaire’s setback rules matter less here, but the building department still wants to see the structural drawings and the finished-floor elevation before you touch a wall.

Trusted Brands We Service in Bellaire

We don’t install mystery brands off a van. On Bellaire ADU and addition jobs, we work with manufacturers you can look up: Schluter for waterproofing and tile systems, Sterling for bath fixtures that hold up, and GAF for roofing on any new structure we build. If you’re adding a bath or a wet bar to your addition, we’ll spec Grohe fixtures where the budget allows. We stock common parts locally for Bellaire customers, which means fewer days waiting on a courier and more days with our crew actually building.

Common Home Additions & ADU Problems We See in Bellaire Homes

• Assuming Houston’s permit process applies. Bellaire City Hall has its own turnaround times, inspection scheduling, and plan-review contacts. Contractors who don’t know the difference stall at the rough-in stage. We’ve fixed more than one project that sat for six months because someone assumed.
• Voiding a builder warranty on a newer home. Altering load-bearing walls without documenting the scope and change orders against the original builder’s structural drawings is a fast way to lose warranty coverage. On newer Bellaire construction, we coordinate with the original builder’s drawings before we open a wall.
• Ignoring HOA architectural-review deadlines. In Bellaire’s newer planned developments, a detached ADU can be rejected for roof pitch or exterior cladding mismatch even after city permits issue. We check the HOA rules first, because a rejection letter two months in costs you real money.
• Underestimating flood elevation requirements. Post-Harvey FEMA maps and Bellaire’s own drainage ordinances mean new finished floors usually sit higher than the old slab. If your addition ignores Base Flood Elevation, you’ll get a stop-work order. We survey the lot and set the floor height before we pour anything.

Pricing for Home Additions & ADU in Bellaire, TX

We Also Serve Cities Near Bellaire

Our crews work throughout the metro, so if you’re in West University Place, Houston, Alief, or Aldine, the same Home Additions & ADU in Bellaire team can handle your job. We schedule from our Houston office and our Bellaire crews drive in locally, so you’re not waiting on a crew from across the state.

FAQs - Home Additions & ADU in Bellaire