Home addition Houston TX — room additions, second stories, garage conversions, and ADUs from a licensed Houston general contractor. Call Houston Build Crew at (281) 905-2414 for a free estimate. Plan about $150–$300 per square foot for a finished room addition; we handle City of Houston or Harris County permits, wind-load framing, and tying new HVAC into the existing home.
Houston homeowners choose additions over moving because it's often 30-50% cheaper than buying up. We handle every type of addition from permit to final walkthrough.
Add a primary bedroom with en-suite bath, walk-in closet, and sitting area. Most popular addition in Houston. Typical size: 400-600 sq ft.
Double your square footage without losing yard space. We engineer the foundation, frame the floor system, and tie into existing rooflines seamlessly.
Convert an attached or detached garage into living space or an accessory dwelling unit (ADU). Great for in-laws, rental income, or home office.
Enclosed sunrooms, game rooms, or flex spaces off the back of your home. Can be climate-controlled or three-season depending on budget.
Semi-private attached suite with bedroom, bath, and kitchenette. Increasingly popular in Houston's multigenerational households.
Extend an existing room by 4-10 feet. Great for expanding a small kitchen, adding a breakfast nook, or enlarging a living room.
Costs depend on size, finish level, foundation requirements, and current lumber/material prices. All estimates include design, permits, and full build-out.
Plan for $150-$300 per square foot for a quality home addition in Houston. A 500 sq ft master suite addition typically runs $75,000-$150,000 fully finished. Garage conversions are lower at $50-$90/sq ft. Call (281) 905-2414 for a free in-home estimate.
Most homeowners stay in place during additions. We seal off the construction area from your living space, protect floors and HVAC ducts, and maintain access to all essential areas. Second story additions may require a short temporary relocation during roof framing.
Room additions: 8-14 weeks after permit approval. Garage conversions: 6-10 weeks. Second story: 14-22 weeks. We provide a written schedule and stick to it.
Adding permitted square footage usually raises appraised value. Master suites and ADUs tend to help listings in Houston more than unconditioned sunrooms. ROI still depends on neighborhood comps and finish level — we price the addition against those comps, not a national average.
Inside the city, structural additions go through the City of Houston. Unincorporated Harris County uses county permitting. Deed restrictions and HOA setbacks still apply even though Houston has no traditional zoning. We file the correct office so the home addition is not stuck in the wrong queue.
Not always. Many Houston slabs were poured for a one-story live load. We start with a structural engineer on the foundation and first-floor framing. If beams or the slab need reinforcement, that cost is in the proposal before we open the roof — not a change order after demo.
Call or text (281) 905-2414. We'll visit your home, discuss your goals, and deliver a detailed written proposal in 48 hours.
Call (281) 905-2414Call Houston Build Crew to discuss room additions, second-story additions, garage conversions and permitting. Request a free project estimate.
A dependable addition proposal connects design, structure, utilities, finishes, site access, and the existing home. Begin with the purpose of the new space, approximate dimensions, tie-in points, desired finish level, and any known property constraints.
Clarify whether design, engineering, approvals, foundation, framing, roofing, windows, mechanical work, electrical, plumbing, insulation, drywall, flooring, painting, and cleanup are included.
Rooflines, drainage, floor elevations, exterior materials, HVAC capacity, and electrical service can affect cost and sequencing.
Compare allowances, exclusions, payment milestones, change-order procedures, cleanup, and written warranty terms—not only the bottom-line number.
Houston-area requirements differ by address and project. The project team should identify which approvals and specialist documents apply before construction begins.
Call (281) 905-2414 to Discuss Your Addition