MAV Design & Build is a licensed room addition contractor serving Alvin TX and all of Brazoria County. Alvin’s generous single-family lots and semi-rural character make it an ideal setting for expanding your home with a new room addition — whether you need an extra bedroom, a dedicated home office, a playroom, or a sunroom overlooking your large Brazoria County property. Our team manages all City of Alvin permits, engineering drawings, and city inspections so you never have to navigate the building department alone.
Room Addition Services in Alvin TX
MAV Design & Build constructs all types of room additions in Alvin TX including single bedroom additions, home office and study additions, playroom and bonus room additions, family room extensions, formal dining room expansions, laundry room additions, mudroom additions, and sunroom and screened porch enclosures. We design every addition to integrate seamlessly with your existing home’s home design and roofline for a natural, cohesive finished result.
Room Addition Costs in Alvin TX
Room addition costs in Alvin TX range from $45,000 for a straightforward single bedroom or office addition to $110,000 or more for a large family room expansion with vaulted ceilings, built-in features, and full HVAC extension. Additions requiring new plumbing such as a bedroom with en-suite bath run $65,000 to $120,000. MAV provides transparent fixed-price contracts before any work begins.
Room Addition Timeline in Alvin TX
Room additions in Alvin TX typically take 8 to 12 weeks from City of Alvin permit approval to completion. Simple bedroom or office additions without plumbing can finish in 8 to 9 weeks while larger family room expansions with HVAC extension and custom finishes take 10 to 14 weeks. City of Alvin permit review adds 2 to 3 weeks before construction begins. MAV provides a full schedule at contract signing.
Permits for Room Additions in Alvin TX
All room additions in Alvin TX require permits from the City of Alvin and engineered structural drawings. MAV Design & Build coordinates all engineering, prepares permit applications, submits to the city, and manages every inspection from foundation through final certificate of occupancy without requiring homeowner involvement.
Serving All of Alvin TX and Brazoria County for Room Additions
MAV Design & Build serves all of Alvin TX and surrounding Brazoria County communities for room additions including Pearland TX, Friendswood TX, Manvel TX, and Angleton TX.
Get a Free Room Addition Estimate in Alvin TX
Call MAV Design & Build at (832) 532-6829 or visit mav-designandbuild.com to schedule your free room addition consultation in Alvin TX. Our team will walk you through your options and provide a transparent fixed-price estimate for your project.
I'm extremely satisfied with my kitchen renovation. The entire process was handled with professionalism and precision. The crew was respectful, efficient, and always made sure I was informed every step of the way. The final result — a beautiful, well-designed kitchen with top-quality finishes and excellent craftsmanship.
Love their work, the kitchen turned out amazing and exceeded our expectations. Completed in much shorter time than I thought it would. Can't recommend them enough!!
Great experience working with this company! They remodeled my kitchen and did an amazing job. The team was professional, easy to work with, and always on time. Everything went smoothly, and they paid attention to the small details.

