Lanais, screen enclosures, and pool cages are standard features of Florida residential and commercial properties. Despite their prevalence, they are frequently built without permits — creating code enforcement issues and title problems when properties are sold. Florida building departments require structural drawings and calculations for lanais and screen enclosures, demonstrating compliance with Florida Building Code wind load requirements. Pineland Engineering (PE 39202 · AR102594) provides structural engineering and permit drawings for lanais and screen enclosures throughout Florida.
Quick Answer
Pineland Engineering (PE 39202, AR102594) provides structural engineering services statewide in Florida for lanai and screen enclosure projects. We ensure your design meets all building codes and permitting requirements. Call us at (239) 420-1530.
Structural Requirements for Lanais and Screen Enclosures
Lanais and screen enclosures in Florida must be designed for the ASCE 7 design wind speed at the project location.
Screen enclosures are particularly challenging structurally because of their large surface area — a screen enclosure acts like a sail in a hurricane. The structural design must address: aluminum frame member sizing, connection design (screws, bolts, and anchors), roof framing for wind uplift, and foundation connections.
In coastal Florida, where design wind speeds are 160–170 mph, screen enclosures require careful engineering.
Post-Ian, many screen enclosures in Lee County were destroyed — often because they were not properly engineered or were built without permits.
Non-Conversion Lanai Requirements
In Florida flood zones, a non-conversion lanai is a specific type of structure that is designed to remain open and unenclosed — it cannot be converted to conditioned space without triggering flood zone compliance requirements for the entire structure.
Non-conversion lanais must have breakaway or open-lattice walls below the base flood elevation and must be documented in the permit drawings as non-conversion.
Pineland Engineering designs non-conversion lanais that comply with FEMA flood zone requirements and the Florida Building Code.
After-the-Fact Permits for Lanais
Unpermitted lanais and screen enclosures are extremely common in Florida.
Pineland Engineering handles after-the-fact permits for these structures regularly. The process requires a site visit, field measurements, as-built drawings, structural calculations, and permit application submission. Many unpermitted lanais can be legalized without modification; some require structural upgrades to meet current code.
Contact us at (239) 420-1530 for a free assessment of your unpermitted lanai.
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Frequently Asked Questions
Do I need a permit for a screen enclosure in Florida?
Yes. Screen enclosures and pool cages are permanent structures that require a building permit in Florida. Pineland Engineering provides the structural drawings and calculations needed for the permit application.
What is a non-conversion lanai in Florida?
A non-conversion lanai is a lanai in a flood zone that is designed to remain open and cannot be enclosed to conditioned space. It must have breakaway or open walls below the base flood elevation. Pineland Engineering designs non-conversion lanais for flood zone compliance.
Florida-Licensed · AR102594 · PE 39202 · Bilingual EN/ES
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Pineland Engineering — Designda Inc. — serves residential and commercial clients statewide. FL Architecture AR102594 · Engineering PE 39202. PO Box 417, Pineland, FL 33945.