Expand your living space with a custom home addition in Galveston TX. Master suites, second stories, sunrooms, and garage conversions built by experts.
Need more space but love your current location on Galveston Island? A custom room addition is the ultimate solution. Whether you want to add a luxurious master suite, construct a second-story level, build a breezy sunroom, or convert an under-house garage into a beautiful guest room, we build room additions that blend seamlessly into your existing home architecture while expanding your space.
Constructing additions on Galveston Island requires specialized structural engineering, including proper foundation piles, elevated flood zone compliance, and hurricane wind resistance. As licensed general contractors, we manage all architectural designs, soil tests, foundation engineering, and city permitting, ensuring your new room addition is built perfectly to code and engineered to stand strong against coastal weather.
We offer complete end-to-end solutions for home addition projects on Galveston Island.
Constructing complete master bedroom wings featuring walk-in closets, luxury spa bathrooms, and private coastal balconies.
Adding complete upper floors to existing homes to double your living area and capture breathtaking Gulf and bay views.
Building windstorm-certified glass sunrooms, screened-in porches, and covered decks that let you enjoy the island breezes.
How we deliver flawless results for your home project.
We visit your property to measure, take photos, and discuss your lifestyle, design aesthetic, and budgeting goals in detail.
Our design team drafts custom layout options and 3D computer visualizations. You select cabinet styles, stones, backsplashes, and paint colors.
We secure all permits from the City of Galveston and historical clearances if needed. Then we carefully execute dust-contained demolition.
Our experts update plumbing, electrical, and HVAC. Next, we install custom drywall, flooring, cabinets, countertops, and detailed tile work.
We install premium appliances, plumbing fixtures, and lighting, followed by a professional deep clean and thorough walkthrough with you.
Transparent price ranges to help you budget for your remodeling project.
| Service Type | Pricing Range | Best For |
|---|---|---|
| Garage Conversion / Guest Suite | $30,000 - $60,000 | Converting an existing ground-level garage or storage bay into a fully insulated, beautiful guest suite with full bath. |
| Single-Story Room Addition | $50,000 - $100,000 | Constructing a brand new 300-500 sq ft room addition from the foundation up, tied into existing framing and roofing. |
| Second-Story Addition / Level Build | $100,000 - $200,000+ | Engineering existing framing for load support, removing existing roof, framing a full upper story, and installing a new wind-rated roof. |
* Note: Prices are estimates and vary based on materials, scope, and specific coastal requirements. Call us for a custom quote.
Common questions about home additions in Galveston, TX.
Explore focused project pages with cost ranges, material guidance, FAQs, and Galveston-specific planning notes.
Convert underused garage or storage space into a guest suite, office, bunk room, or flexible living area with code-aware planning.
View Specialty Page →Add upper-level living space, bedrooms, views, and flexibility with a second-story addition planned for coastal structural demands.
View Specialty Page →Bright sunroom additions that bring in Galveston light while controlling heat, humidity, drainage, and coastal exposure.
View Specialty Page →Accessory dwelling unit planning and construction for Galveston homeowners who need flexible guest, family, rental, or work space.
View Specialty Page →Every neighborhood has different remodeling details. These area pages explain how we plan home addition construction for local homes, codes, and coastal conditions.
Local home addition construction guidance for historic cottages, raised homes, and Victorian properties near the East End Historic District, including historic review, original trim lines, older framing, and street-facing details.
View Local Page →Local home addition construction guidance for beach houses, canal homes, and elevated properties from Sea Isle to Terramar Beach, including salt-air exposure, windstorm details, rental durability, and flood-zone planning.
View Local Page →Local home addition construction guidance for older cottages, townhomes, and homes near Galveston's downtown blocks, including compact layouts, older utilities, parking access, and city permitting.
View Local Page →Local home addition construction guidance for canal homes, bay-facing properties, and beach rentals in Jamaica Beach, including moisture, flood elevation, outdoor living, and easy-care finishes.
View Local Page →Local home addition construction guidance for historic buildings, nearby cottages, loft-style residences, and mixed-use blocks around The Strand, including historic details, compact footprints, sound control, and efficient material staging.
View Local Page →Local home addition construction guidance for beach homes, rental properties, and elevated coastal houses near the Gulf, including salt spray, guest traffic, exterior stairs, decks, and storm-conscious details.
View Local Page →Contact us today to schedule your free, in-home consultation and estimate.
(409) 555-1234