Three-Season Room Addition in St. Petersburg, FL — Costs $7,521 to $61,106
What does three-season room addition cost in St. Petersburg? Average $23,503, ranging $7,521–$61,106. Labor runs $27.84/hr locally — 6% below the national average. Free breakdown with material + labor split.
St. Petersburg, FL Market
-6% vs nationalLabor Rate
$27.84/hr
Material Index
95
Avg Permit Cost
$689
Median Home Price
$261,280
St. Petersburg is a mid-sized city in Florida with a healthy pool of local contractors. Homeowners generally have several options to compare for a three-season room addition, which helps keep pricing competitive. St. Petersburg offers slightly below-average renovation costs, giving homeowners a small cost advantage compared to most US markets. The median home in St. Petersburg is valued at $261,280, putting this project at about 9.0% of home value — a moderate investment with a projected 50% ROI.
Low Estimate
$7,521
National: $8,000
Mid-Range
$23,503
National: $25,000
High End
$61,106
National: $65,000
Per Sq Ft
$89
National: $95
Three-Season Room Addition Cost Calculator for St. Petersburg
Adjusted for St. Petersburg's labor rate ($27.84/hr) and material costs (index 95).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in St. Petersburg
$23,503
Based on 200 sq ft at mid quality, adjusted for St. Petersburg market rates.
Local Cost Breakdown
At St. Petersburg's average rate of $27.84/hr (7% below national avg)
Material cost index 95 (5% below national baseline of 100)
Three-Season Room Addition vs. Home Value in St. Petersburg
| Metric | St. Petersburg | National Avg |
|---|---|---|
| Three-Season Room Addition (Mid-Range) | $23,503 | $25,000 |
| Median Home Price | $261,280 | $350,000 |
| Project as % of Home Value | 9.0% | 7.1% |
| Estimated ROI | 50% | 50% |
| Median Household Income | $53,167 | $75,000 |
What Affects the Price in St. Petersburg
- 1Local labor rates ($27.84/hr in St. Petersburg)
- 2Material cost index (95 vs national 100)
- 3Size
- 4Foundation type
- 5Screen vs window panels
- 6Roof style
Popular Upgrades
- Interchangeable screen and window panels
- Ceiling fans
- Outdoor-rated furniture
Other Projects in St. Petersburg, FL
Second Story Addition
$187,800
Accessory Dwelling Unit (ADU) Construction
$140,850
Room Addition
$84,510
Swimming Pool Installation
$61,178
Home Addition
$75,208
Inground Swimming Pool
$61,249
Attic Conversion
$51,585
Swimming Pool Construction
$46,895
Three-Season Room Addition in Other Florida Cities
Planning a Three-Season Room Addition in St. Petersburg
Building permits are typically required for a three-season room addition in St. Petersburg. The average permit fee in this area is $689, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 2-4 weeks from start to finish.
A three-season room addition is a complex project best left to licensed professionals. In St. Petersburg, skilled contractors charge an average of $27.84/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median St. Petersburg household earning $53,167/year, this project at $23,503 represents a significant investment. Consider financing options or phasing the work to spread costs over time.
Three-Season Room Addition — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
All Construction Costs in St. Petersburg
View labor rates, material costs, and project estimates for St. Petersburg, FL.
Explore All Project Cost Guides
Compare costs across 120+ home improvement projects in 3,636 cities nationwide.
View All Project Costs