A home addition in Tampa costs $95 to $250 per square foot. A standard 15×20 room addition (300 square feet) lands between $48,000 and $65,000 with quality finishes. We have priced this from 73 actual Tampa room addition projects ranging from $28,000 to $125,000. CraftLine Remodeling is a licensed and insured Florida design build contractor. We design the addition, pull the Hillsborough County permits, pour the foundation, and hand you the keys to the finished space.
What a Home Addition Costs in Tampa (2026)
| Level | Cost per sq ft | 15×20 addition (300 sq ft) |
|---|---|---|
| Basic | $95 to $125 | $28,500 to $37,500 |
| Standard | $125 to $185 | $37,500 to $55,500 |
| Premium | $185 to $250 | $55,500 to $75,000+ |
Foundation matters in Florida: slab on grade runs $4,500 to $7,500 and suits most single story additions, while stem wall and pile foundations for sloped or flood prone lots run $7,500 to $18,000. The full math, including 73 real project examples, is in our 15×20 room addition cost guide.
Additions We Build Across Tampa
- Primary suite additions in Carrollwood and Westchase
- Family room and kitchen expansions in South Tampa bungalows
- In law suites and garage conversions in Seminole Heights
- Second story additions where lots will not grow sideways
- ADUs and detached studios, see our ADU construction guide
Why Tampa Additions Are Their Own Specialty
An addition has to match a house that already exists: roofline, foundation height, stucco texture, floor levels. It also has to satisfy Hillsborough County setback rules, wind load requirements, and in some neighborhoods flood elevation. This is where additions go wrong with general handymen. We design around these constraints first, so the new space looks original to the house and passes every inspection.
What Homeowners Say
CraftLine Remodeling is a licensed and insured Florida contractor and a member of NARI Tampa Bay. 93 Google reviews, 5.0 rating.
Tampa Home Additions: Common Questions
How much does a home addition cost in Tampa?
Expect $95 to $250 per square foot. A typical 300 square foot room addition with quality finishes runs $48,000 to $65,000 in Tampa.
How long does an addition take?
Design and permitting usually take 6 to 10 weeks with Hillsborough County, then 8 to 14 weeks of construction depending on size and weather.
Is an addition cheaper than moving?
Usually, yes. With Tampa prices, adding the space you are missing often costs less than the realtor fees, moving costs, and higher mortgage of a bigger house. Our remodeling ROI guide breaks down which Tampa zip codes reward the investment most.
Do you handle the permits?
Yes, all of them: building, electrical, plumbing, mechanical, and the engineering documents Hillsborough County requires. It is included in the project.
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Talk to a licensed contractor. No pressure, no sales script, real numbers. Schedule your free consultation here or call us at (813) 522-4359.