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Unit pricing

St. Petersburg sunroom addition pricing per square foot

Sunroom Addition cost per square foot in St. Petersburg, Florida in 2026.

Low

$25,000

Average

$54,100

High

$83,200

St. Petersburg crews quote about $125 – $415 per square foot.

Multiply local unit rates by your real measurements.

What drives sunroom addition prices in St. Petersburg

Local labor, permitting and climate move St. Petersburg prices away from the national average.

Labor market

St. Pete crews price with the Tampa Bay market.

Permits

City permits with coastal and flood-zone review.

Climate

Salt air and storm surge affect siding, roofing and fencing.

St. Petersburg unit pricing by material

Three-season kit$170 – $230
Four-season prefab$230 – $305
Site-built four-season$305 – $390
Custom conservatory$390 – $540

Ways to lower your St. Petersburg price

  • Choose a three-season room if you only use it spring through fall.
  • Reuse an existing deck structure if it is rated for the load.
  • Collect three written bids on an identical scope — spreads of 20–40% are normal.
  • Book in the off-season and stay flexible on the start date to save 5–15%.
  • Bundle nearby work into one mobilization so you only pay setup and travel once.
  • Ask what the contractor would change to cut 10% without hurting durability.

St. Petersburg questions

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