Home Additions in
St. Augustine, FL
Expand your living space with seamlessly integrated additions.
Home Additions in St. Augustine, St. Johns County
Need more space but love your St. Augustine neighborhood? Home additions let you grow without moving — and in St. Johns County's competitive real estate market, adding square footage to your existing home is often more cost-effective than buying larger. Wilson & Co builds additions that blend seamlessly with your existing architecture across Downtown, Davis Shores, Vilano Beach, World Golf Village, and Lincolnville, not afterthoughts that look bolted on.
We've completed kitchen remodels in Davis Shores, whole-home renovations in Vilano Beach, bathroom transformations in World Golf Village, and custom interiors throughout downtown St. Augustine. In St. Augustine, historic preservation requirements in the downtown core, plus newer homes showing settling and builder-grade finish failures after 10–15 years. Home additions require careful planning around Florida building codes, hurricane requirements, and local setback rules. Homes span from 1700s–1800s historic properties in the Historic District to brand-new construction in communities like Shearwater and Silverleaf. The Historic Architectural Review Board (HARB) may require approval for exterior work in the Historic District. Standard St. Johns County Building Department handles all other permitting. Whether it's a master suite, Florida room, in-law quarters, or second story, we handle the full scope from feasibility through final walkthrough.
Our Home Additions Services
Need more space but love your neighborhood? Home additions let you grow without moving. Wilson & Co builds additions that blend seamlessly with your existing architecture, not afterthoughts that look bolted on. We handle Florida building codes, hurricane requirements, and permitting. Master suites, Florida rooms, in-law quarters, second stories. Founder & Design Builder · License #CGC1532295 · AK Rising.
What's Included
- Master suite additions with luxury bathroom and walk-in closet
- Florida room and sunroom construction with impact-resistant glass
- In-law suite design with separate entrance and kitchenette options
- Second story additions that maximize your lot
- Garage conversions to living space
- Seamless architectural integration with existing rooflines and materials
- HVAC extension and electrical panel upgrades
- Foundation work including slab and raised foundation options
- Hurricane-rated construction meeting Florida building codes
- Outdoor living additions (covered patios, outdoor kitchens)
Our Process
- Feasibility: We evaluate your property, review zoning and setback requirements, assess structural capacity, and discuss budget to determine what's possible.
- Design: Our team creates architectural plans that integrate beautifully with your existing home, including 3D renderings so you can visualize the finished addition.
- Permitting: We prepare and submit all permit applications, handle plan reviews, and coordinate with local building departments in St. Johns, Duval, and Flagler counties.
- Construction: Our crews build your addition with minimal disruption to daily life, maintaining weather protection for your existing home throughout construction.
- Finishing: We complete all interior finishes, exterior details, landscaping restoration, and ensure perfect integration with your existing home.
Home Additions FAQ for St. Augustine Homeowners
How much does a home addition cost in St. Augustine?
Home additions in St. Augustine typically run $200–$400 per square foot depending on complexity and finishes. A Florida room might cost $50,000–$80,000, a master suite addition $100,000–$200,000, and second-story additions $200,000+. Homes span from 1700s–1800s historic properties in the Historic District to brand-new construction in communities like Shearwater and Silverleaf. We provide detailed estimates after our feasibility study.
What are the setback requirements for additions in St. Johns County?
The Historic Architectural Review Board (HARB) may require approval for exterior work in the Historic District. Standard St. Johns County Building Department handles all other permitting. Setback requirements vary by lot — we evaluate your specific property's zoning, lot lines, and easements during our feasibility study before you invest in design. In St. Augustine, we regularly navigate these requirements and can tell you early whether your addition concept is feasible.
How long does a home addition take in St. Augustine?
Simple additions (Florida rooms, covered patios) take 2–3 months. Master suite additions take 3–5 months. Second-story additions take 5–8 months. Permitting in St. Johns County typically adds 4–8 weeks before construction begins. We provide a specific timeline during the planning phase.
General Home Additions Questions
How do you match the new addition to my existing home?
We carefully source matching or complementary materials including roofing, siding, windows, and trim. Our designers study your home's architectural style to ensure rooflines, proportions, and details blend seamlessly. When exact matches aren't available, we design transitions that look intentional and enhance your home's overall appearance.
Do I need to move out during construction?
Usually not. We carefully plan construction phases to maintain livable conditions in your existing home. We create weather-tight barriers before opening any walls, manage dust and debris, and schedule noisy work during reasonable hours. Most families stay in their homes throughout addition construction.
What permits are required for a home addition in Florida?
Home additions require building permits including structural, electrical, plumbing, and mechanical permits. In flood zones, additional documentation may be required. We handle all permitting as part of our service, including plan preparation, submission, and coordination of all inspections throughout construction.
How much does a home addition cost in Northeast Florida?
Home addition costs typically range from $200-$400 per square foot depending on complexity and finishes. A basic Florida room might cost $50,000-$80,000, a master suite addition $100,000-$200,000, and second story additions $200,000+. We provide detailed estimates after our feasibility study.
How long does a home addition take to build?
Timeline depends on size and complexity. A simple Florida room might take 2-3 months, a master suite addition 3-5 months, and a second story addition 5-8 months. Permitting can add 4-8 weeks before construction begins. We provide a detailed schedule during the planning phase.
Zip Codes We Serve in St. Augustine
We provide home additions services in the following St. Augustine zip codes: 32080, 32084, 32086, 32095.
St. Augustine Neighborhoods We Serve
- Downtown St. Augustine: The historic heart of St. Augustine featuring centuries-old architecture, cobblestone streets, and homes requiring specialized restoration expertise.
- Vilano Beach: A charming oceanfront community north of the inlet with a mix of beach cottages and larger custom homes.
- St. Augustine Beach: A family-friendly beach community with homes ranging from classic Florida cottages to modern coastal construction.
- World Golf Village: A prestigious master-planned community known for its golf courses and upscale homes seeking premium interior upgrades.