
Room Additions in Oklahoma City
Custom room additions built by one contractor. Bedrooms, offices, sunrooms, and more.
MASB Construction & Remodeling LLC builds custom room additions across Oklahoma City (OKC), Edmond, Moore, Norman, and surrounding areas. Every project is led personally by Marco Barrón, owner and general contractor with over 27 years of experience.
We handle everything — design, framing, electrical, plumbing, HVAC, and finishing work. One contractor. One point of contact. No subcontractor chaos.
Whether you need more living space, a dedicated home office, or a guest suite, we help you expand your home without the hassle.
Types of Room Additions We Build
Every addition is different, but here's what MASB Construction & Remodeling LLC can build:
If your project requires permits, engineering, or inspections, we handle all of it.
How Long Does a Room Addition Take?
Interior Additions
3–6 Weeks
Interior additions and conversions
Larger Additions
6–12 Weeks
Larger room additions and exterior builds
Timelines depend on scope, permitting, and complexity. We provide a realistic schedule before work begins — and we stick to it.
Why Oklahoma City Homeowners Choose MASB
Marco Barrón is on your job personally. Not a project manager. Not a rotating crew. The owner.
Room Addition Service Areas
We serve homeowners throughout the Oklahoma City metro area, including:
Primary Service Areas
Extended Service Areas
If you're within 30 miles of Oklahoma City, we can help.
Frequently Asked Questions
How long does a room addition take?
Interior additions and conversions usually run 3 to 6 weeks, and larger room additions or exterior builds take 6 to 12 weeks. The exact length depends on scope, permitting, and complexity. We give you a realistic schedule before work begins and stick to it.
Do I need permits for a room addition?
Yes — most room additions require permits, and often engineering and inspections too, and we handle all of it. When an addition changes your home's footprint or structure, we plan it properly and take care of the permitting and inspection process so the work is signed off and done to code.
What types of room additions do you build?
Bedrooms, bathrooms, home offices, and sunrooms are the most common, but we also build in-law suites, second-story additions, garage conversions, and bonus rooms. Because we handle design, framing, electrical, plumbing, HVAC, and finishing ourselves, it stays one contractor and one point of contact throughout.
Can I stay in my home during construction?
Yes. We clean up daily so you can keep living in your home while we build. Since an addition goes onto or within your existing home, we work to keep the rest of the house usable and the site as tidy as the job allows.
Do you build room additions in my part of the OKC metro?
We build additions throughout Oklahoma City and the surrounding metro — Edmond, Moore, Norman, and Yukon among them — plus nearby communities. If you're within about 30 miles of the city, we can help. Marco runs every project himself, so the person planning your addition is the one building it.
Helpful Room Addition Guides
Ready to Add Space to Your Home?
Schedule a free in-home consultation. We'll walk through your space, discuss your goals, and give you a detailed estimate — no obligation.
Or call Marco directly: (405) 361-4293
Also considering a kitchen or bathroom remodel? See our kitchen remodeling services





