We’re a home addition contractor in Houston providing in-house design + build, engineering coordination, and permitting support—so your addition looks original to the home and the process stays organized from concept to construction.
Whether you’re planning a small extension or a complete home transformation, our team brings expert solutions to every stage of the project. Our services include:
Most homeowners want three things up front: a realistic budget range, a clear path through permits/engineering, and an honest timeline. The numbers below are meant to help you plan and compare proposals, not replace a site-specific estimate.
Costs vary based on size, foundation requirements, how much plumbing/HVAC is involved, and how closely we need to match the existing exterior and roofline.
Common budget ranges (construction only):
A quick way to think about it:
If you want a deeper breakdown, we also put together a dedicated Houston pricing guide: /how-much-do-home-additions-cost-in-houston/
These are the biggest “budget multipliers” we see in Houston additions:
1) Foundation requirements
Soils, drainage, and existing slab conditions can affect whether we use a slab extension, piers, grade beams, or additional site prep.
2) Exterior and roof tie-ins
Matching brick, siding, trim profiles, soffits, fascia, and roof pitch can add cost—but it also makes the addition look original to the home.
3) Structural engineering and framing complexity
If we’re removing load-bearing walls, adding large openings, raising a roofline, or building a second story, engineering and structural framing requirements increase.
4) Mechanical tie-ins (HVAC, plumbing, electrical)
Relocating panels, running new drains/vents, adding gas lines, upgrading HVAC capacity, or installing additional returns can change scope quickly.
5) Access and site logistics
Tight side yards, mature landscaping, long material paths, and limited driveway space can add labor time and staging complexity.
6) Finish selections and allowances
Cabinetry, countertops, tile, flooring, windows/doors, fixtures, and trim packages can swing totals significantly. Clear allowances in a proposal make comparisons easier.
Most additions require a permit, and many require engineering depending on the scope. The key is getting the design and documentation right before construction so the project runs smoothly.
Typical steps:
Concept plan (layout, elevation direction, roof tie-in approach)
Construction drawings (permit-ready plans)
Engineering coordination when required (structural design, beam schedules, framing notes)
Permit submittal + review
Inspections during construction (common checkpoints include foundation, framing, MEP rough-ins, insulation, and final)
Why this matters:
A proposal that looks cheaper can be missing critical documentation, permit support, or engineering, leading to delays or change orders later. When you compare contractors, ask what’s included for plans, permits, and engineering.
Every project is different, but this is a realistic planning framework:
Design + planning: 6 to 8 weeks
Engineering (if needed): 2 to 4 weeks (can overlap with design)
Permitting: 4 to 10 weeks (varies by scope and review cycles)
Construction:
Smaller additions: 12 to 16 weeks
Larger additions / master suites: 16 to 24 weeks
Second-story additions: 18 to 26 weeks
Tip: The smoothest projects are the ones where the scope, selections, and allowances are clarified early, before demo starts.
When you’re reviewing bids, these questions help you compare apples-to-apples:
Is the scope detailed by phase? (demo, foundation, framing, MEP, insulation, drywall, trim, paint, etc.)
Are allowances clearly listed (and realistic for the level of home)?
Does the contractor include permit support and inspections coordination?
Is engineering included or excluded? If excluded, who supplies it and what’s the expected cost?
What’s excluded? (appliances, landscaping, driveway work, window coverings, specialty lighting, etc.)
How are change orders handled? (pricing method, approvals, timeline impacts)
What warranty is provided?
If you’d like a realistic budget range for your home, send any of the following and we can give you a quick directional estimate:
a sketch or inspiration photos
an existing floor plan
a rough size (square footage) and which rooms you’re adding
your address/neighborhood (helps with access and site logistics)
Expand your living space with a professionally designed room addition. Whether you need an extra bedroom, home office, or family room, our team provides full-service solutions, including design, engineering, budgeting, and construction. We specialize in seamless home extensions that match your existing architecture and increase your property value. Contact us today for a free room addition quote in Houston!
Maximize your home’s potential with a second-story room addition. Perfect for growing families, this service adds square footage without sacrificing yard space. Our second-story additions include custom design, structural engineering, architectural planning, and 3D renderings to ensure your new space is both functional and visually stunning. Trust our experts for second-story additions in Houston and surrounding areas.
Turn unused attic space into livable square footage, bedrooms, a game room, office, or full suite. We evaluate headroom, structure, insulation, ventilation, stair layout, and HVAC needs, then produce permit-ready plans and engineering as needed. Our goal is a finished space that feels original to the home, not an afterthought.
Create a covered patio or outdoor living area designed for Houston heat and rain, ideal for hosting, grilling, or relaxing year-round. We handle foundations, roof tie-ins, drainage considerations, electrical for fans/lighting, and finish selections to match your home’s architecture.
Our step-by-step process of how we approach each project.
Attention to detail and workmanship is what we’re known for. We have a step-by-step process for every project to ensure quality and efficiency.
The best ideas often fail without a well-thought-out plan. That is why we invest so much the time and effort in truly understanding all aspects of project and determining what work will be necessary. From the beginning, we will gather all details, consider all potential questions and issues, and put together a comprehensive and accurate budget and plan.
Need more space? Romo Remodeling is an experienced contractor for any home addition. From start to finish we got you covered. We discuss your needs and build a customized solution and plan. Each project is unique and we are here to work with you on your new room addition.
Romo Remodeling – Houston & Austin’s best Home and Room Additions Contractor
We design and build your new home addition from start to finish. We know these projects can be stressful so we handle everything and make it as stress free as possible. Thousands of happy customers, give us a call today for more info.
Romo Remodeling – Houston & Austin’s best Home and Room Additions Contractor
Hundreds of happy customers over many years.
Top 500 Remodeling Company Nationwide