Expand Your Jacksonville Home with Custom Additions
Need more space but love your location? I build room additions, second stories, master suites, and in-law suites that seamlessly blend with your existing home.
- Room Additions – Extra bedrooms, offices, or living space
- Second Story Additions – Build up when lot space is limited
- Master Suite Additions – Create your personal retreat
- In-Law Suites & ADUs – Multi-generational living solutions
- Sunrooms & Florida Rooms – Enjoy natural light year-round
Room Additions
Add valuable living space to your Jacksonville home with a custom room addition tailored to your family's needs. I build single-room additions for bedrooms, home offices, playrooms, craft rooms, sunrooms, or any dedicated space you envision.
$80K–$220K
Final number depends on your specific scope, finishes, and site conditions. I'll quote the exact figure after a walk-through.
Why
Adding a room is almost always cheaper than moving — and you keep your school district, your yard, and your neighbors. The math depends on what NE Florida is doing to home prices that month.
What
Foundation, framing, roofing, exterior siding to match, windows + doors, electrical, HVAC extension or new zone, insulation rated for FL climate, drywall, flooring, trim, paint.
How
I match exterior siding and roofline first so the addition doesn't read as bolted-on. Foundation and frame go up in week 1–2; dry-in by week 3; finish work weeks 4–8 depending on size.
An addition that doesn't match the existing house lowers value instead of adding it. I'll source the closest-match siding and roofing even when it costs more.
Second Story Additions
Maximize your property's footprint by building up instead of out with a second story addition. This option is ideal for homes on smaller lots where yard space is limited or for homeowners who want to preserve their landscaping and outdoor areas.
$150K–$400K
Final number depends on your specific scope, finishes, and site conditions. I'll quote the exact figure after a walk-through.
Why
When the lot is small or the yard is sacred, you build up. A second story doubles your footprint without losing a single square foot of grass.
What
Structural assessment of existing foundation + walls, reinforcement where needed, new staircase, framing, roofing, dormers/skylights, multiple bedroom + bath configurations, full interior finish.
How
Engineering first — your existing house has to carry the load. Demo of existing roof and frame-up takes 2–3 weeks; dry-in fast to protect the floor below; interior finish 6–10 weeks.
Second-story additions live or die on the structural assessment. I'll engage a structural engineer before quoting — it's not optional.
Master Suite Additions
Create your personal retreat with a luxurious master suite addition that includes a spacious bedroom, walk-in closet, and spa-like bathroom. A master suite addition separates parents from children's bedrooms for better sleep and privacy.
$120K–$280K
Final number depends on your specific scope, finishes, and site conditions. I'll quote the exact figure after a walk-through.
Why
The kids grew up. The bedroom you've been in for 25 years no longer fits how you live. A master suite addition is the highest-value way to fix that without selling.
What
Bedroom with vaulted/tray ceiling, walk-in closet with custom organizers, spa-like bath (walk-in shower, soaking tub option, double vanity), dedicated HVAC zone, large windows.
How
Layout first — which way does the morning sun hit, where do you want the closet relative to the bath. Foundation and frame in 2 weeks; finish takes 6–8 because the bath is the bottleneck.
Master suite additions add value when they're proportionate to the rest of the house. I'll talk you out of a 600 sq ft master in a 1,800 sq ft home — it hurts resale.
In-Law Suites & ADUs
Accommodate aging parents, adult children, or guests with dignity and independence by adding an in-law suite or accessory dwelling unit (ADU). I build self-contained living spaces with a bedroom, bathroom, kitchenette or full kitchen, and living area that allow family members their own private space while keeping them close. I design these additions with accessibility features like zero-threshold entries, wider doorways, grab bars in bathrooms, and single-floor layouts that support aging in place. My in-law suites can be attached to the main house with a connecting door or built as detached structures, depending on your property and preferences. These versatile additions also work beautifully as home offices with client meeting space, rental units for extra income, or guest quarters for extended visits.
$90K–$250K
Final number depends on your specific scope, finishes, and site conditions. I'll quote the exact figure after a walk-through.
Why
An aging parent moving in costs less than memory care, and an adult child with their own door costs less than a second mortgage. Either way, an in-law suite gives everyone privacy.
What
Self-contained unit: bedroom, bathroom, kitchenette or full kitchen, living area, private entrance. Optional connecting door to main house. Accessibility features built in (zero-threshold, wider doorways, grab-bar blocking).
How
Permit path matters here — Clay/Duval/St. Johns each handle ADUs differently. I check the zoning before we design. Build is 12–20 weeks depending on attached vs. detached.
ADU regulations changed across NE FL in the last few years. I work the current rules into the design instead of fighting the permit office at the end.
Sunroom & Florida Room Additions
Take advantage of Jacksonville's beautiful weather and sunshine with a sunroom or Florida room addition. I build bright, airy spaces with abundant windows that bring the outdoors in while protecting you from heat, insects, and storms. I offer various options from three-season rooms with large windows to fully climate-controlled four-season rooms with insulated glass, proper HVAC integration, and finishes matching your main home. Sunrooms provide versatile space for morning coffee, indoor plants, reading nooks, casual dining, or entertaining while enjoying natural light and garden views. I ensure proper foundation and roof integration, select energy-efficient windows appropriate for Florida's sun exposure, and create spaces that enhance your home's value while expanding your usable living area year-round.
$50K–$140K
Final number depends on your specific scope, finishes, and site conditions. I'll quote the exact figure after a walk-through.
Why
Per the Renaissance FAQ, sunrooms run 20–50% less than traditional room additions and build in roughly 90 days. They give you the year-round room without the addition price tag.
What
Three-season (large windows) or four-season (insulated glass + HVAC) construction. Foundation and roof integration with main home, energy-efficient windows rated for FL sun exposure, finished floor matching interior.
How
Foundation and dry-in fast (2–3 weeks). Window install drives the schedule — about 4–6 weeks lead time on the right glass spec. Finish work after windows arrive.
Cheap sunrooms read as 'sunroom' from across the yard. Done right with matching rooflines and proper window spec, they read as part of the house.
Garage Conversions & Expansions
Transform underutilized garage space into valuable living areas or expand your garage to accommodate more vehicles, workshop space, or storage. I convert existing garages into bedrooms, home offices, gyms, playrooms, or studios by adding proper insulation, climate control, finished walls and ceilings, flooring, electrical, and windows for natural light. I handle the garage door removal and wall framing to create an attractive exterior that matches your home. Alternatively, I build garage expansions or additions for homeowners who need the parking and storage space of a two or three-car garage. My garage projects include proper foundation and drainage, quality doors and openers, adequate lighting and electrical for tools or equipment, and durable finishes that withstand automotive use.
$25K–$80K
Final number depends on your specific scope, finishes, and site conditions. I'll quote the exact figure after a walk-through.
Why
Most garages in NE Florida hold lawnmowers and boxes, not cars. Converting unlocks 400–600 square feet of finished space at a fraction of an addition's cost.
What
Insulation upgrade, climate-controlled HVAC zone, finished floor (no slab cracks visible), drywall, electrical upgrade, windows where the garage door was, exterior siding to match.
How
Slab assessment and moisture barrier first — Florida garage slabs aren't dry. Frame-in and insulate week 1; HVAC and electrical week 2; finish weeks 3–4.
Conversions feel cheap when the slope of the old slab shows in the finished floor. I'll level or self-leveling overlay before any flooring goes down.
What people ask me to add to the house.
See yours in the list? Tap it to jump to the form — you'll have a real budget range in 90 seconds. Don't see it? Tell me about it in step 6 — I read every one personally.
- Master suite with walk-in closet
- Spa-style master bathroom
- Extra bedroom for a growing family
- Bonus room over the garage
- Second story above the existing footprint
- Detached in-law cottage
- Attached in-law suite with private door
- ADU for rental income
- Garage conversion to bedroom
- Garage-to-office conversion
- Three-car garage expansion
- Sunroom that matches the roofline
- Four-season Florida room
- Three-season screened porch
- Mudroom + drop-zone addition
- Walk-in pantry off the kitchen
- Home gym addition
- Multi-generational living layout
- Zero-threshold accessible entry
- Wider doorways for aging in place
- Match existing siding + roof shingles
- Engineered second-story foundation
- Permitted addition with HOA approval
- Flood-zone-compliant elevation
Don't see yours? Describe it in step 6 — I read every one personally.
Frequently Asked Questions About Home Additions
Home Additions Service Areas
We proudly serve Jacksonville and the surrounding Northeast Florida communities. Our team of experienced professionals is ready to bring your vision to life, no matter where you're located in our service area.
Don't see your area?
Contact me to check availabilityRead the Clay County cost & permit guide.
A real general-contractor home addition in Clay County, FL runs $50,000–$110,000 for a small (200–400 sq ft) addition, $110,000–$280,000 for a standard (400–800 sq ft), and $280,000–$750,000+ for a premium (800–1,500+ sq ft). Full breakdown — every tier, every permit step, every fee — in the guide.
Read the Home Additions guideRelated services.
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Tell me about your home additions above — you'll see your real budget range mid-flow, and I'll call within 24 hours with a specific quote. No project managers between us.
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