Licensed #CBC1266673St. Petersburg & PinellasBuilt to FL Coastal Code
Add a Second Home
to Your Property.
Find Out If You Can.
Rental income, room for aging parents, space for adult kids — an ADU does it without leaving your lot. The first question isn't cost. It's whether your property qualifies. We answer that before you spend a dollar.
Three Ways to Build One
Not All ADUs Cost the Same
An ADU can reuse space you already have or get built from the ground up. That single decision drives most of your budget. Here's the honest range for each on a typical Pinellas County lot.
Lowest Complexity
Garage Conversion ADU
$60,000 – $90,000
The shell already exists, so work focuses on interior buildout, insulation, HVAC, and utility tie-ins instead of new foundation or framing. The fastest path to a permitted, livable ADU on most lots.
Moderate Complexity
Attached ADU
$90,000 – $160,000
Integrates with the main home — utility tie-ins, structural reinforcement, and in some cases shared-wall engineering. Permitting involves the primary structure, which adds review time in the city's building department process.
Highest Complexity
Detached ADU
$120,000 – $220,000+
A standalone residence: new foundation, independent framing, full roofing, separate utility routing, and complete code compliance from the ground up. Coastal Florida standards and flood-zone rules shape the engineering and the cost.
Ranges are typical Pinellas County estimates. Your exact number depends on site conditions, finishes, and permitting — which is why we start with feasibility, not a guess.
Real Homeowners, Real Projects
"Central Builders Group did our garage conversion into a living space. It was a very good experience. Everyone was very professional and nice to work with. I would recommend them and would use them again."
Claressa M.
Google Review"I recommend David Gayhart and Central Builders Group. David was friendly, congenial, and anxious to assist in the rebuilding of our home — a fair contract and a collaborative approach with our designer throughout."
Byron M.
Google Review"Great experience from start to finish. Their team was professional, easy to work with, and communicated clearly throughout the process. Would happily recommend Central Builders Group."
Josh N.
Google ReviewWhy Central Builders Group
We Confirm You Can Build Before You Pay to Design
How We Build It
i.
Zoning & Feasibility
We evaluate lot size, setbacks, parking, and utility access under St. Petersburg zoning — plus flood zones and elevation where they apply. Identifying constraints first prevents redesigns and confirms the structure fits code before design progresses.
ii.
Design & Engineering
With feasibility confirmed, the project moves into coordinated design and structural planning — foundation, layout, utility routing, and Florida wind-load compliance, reviewed against state and municipal standards.
iii.
Permitting & Build
Plans are submitted for city permitting. Once approved, construction moves through foundation, framing, mechanical, finishes, and inspections — each phase aligned to municipal approvals before completion.
Built for coastal Florida. One accountable team — design, permits, and build under one roof, with no subcontractor handoffs. We handle the flood zones, wind load, and permitting that stall other builders. Insured & Bonded · Licensed across Pinellas County.
Free, No-Obligation Lot Review
Find Out What You Can Build
Tell us about your property and we'll confirm whether an ADU works on your lot — before any design fees. No pressure, no obligation. Just a straight answer on what's possible.
Prefer to talk? Call us directly at (813) 421-3640