Owners often ask whether a shed, pool, patio, or enclosure needs a permit, and, separately, whether it needs an engineer. These are two different questions, and the answers depend on the project and the jurisdiction.
This guide covers the general picture. We confirm what your specific project requires before any work starts.
Permit vs engineered plans
A permit is the jurisdiction's approval to build. Engineered plans are the sealed drawings or calculations that support the permit where the code requires them. A small project may need a permit but not engineering; a larger or wind-loaded one usually needs both.
Where engineering is commonly required
Sheds and accessory structures above a certain size generally need engineered anchorage; pools need documented bonding and a compliant barrier; screen enclosures need engineered members and connections. Patios and slabs vary by scope and attachment.
What makes a pool an engineered project
Two safety systems drive most pool documentation. The first is equipotential bonding: a No. 8 solid copper grid ties the shell's reinforcing steel, the ladders and rails, the pump and metal equipment, and the surrounding deck and nearby metal into one electrical potential, per the National Electrical Code (Article 680), so a person in the water can never be across a dangerous voltage difference. The second is the barrier: a compliant pool barrier, typically at least 48 inches high, with self-closing and self-latching gates and restricted openings, per the pool-safety provisions in force for your jurisdiction.
Depending on the site, a pool can also need structural engineering, for hydrostatic uplift where the water table is high, or where it is elevated or on structure. The exact bonding layout, barrier details, and any structural design are confirmed for your project.
Questions
Do I need a permit for a small shed in Florida?
Many jurisdictions require a permit for sheds above a small size threshold, and engineered anchorage above another. The thresholds vary by jurisdiction and are stricter in the HVHZ. We confirm what applies to your shed.
Does a screen enclosure or pool need engineering?
Screen enclosures typically need engineered members and connections; pools need documented bonding and barrier compliance. We confirm the requirement for your specific project.