A Florida room doesn’t have insulation, nor is the space heated, so in most cases, the room won’t be comfortable enough to use during the winter months. A four-season room, which is like a Florida room that’s insulated, heated, and cooled, is a better option if you’re looking to enjoy your sunroom all year long.

The average cost to enclose a patio to create a sunroom is around $5,000, and prices generally range from $3,000 up to $10,000. The price you pay will depend on the state of your patio and whether it needs repairs or additional structural support, the quality of the materials you choose, the size of your patio, and whether you plan to run utilities into and finish the sunroom. The price for a fully finished patio enclosure could run up to around $20,000, while you might pay just $2,500 for a screened-in porch.

An Arizona room may or may not count toward your home’s square footage, depending on local regulations and the specifics of the room, but generally does not get included in the total square footage. In many locations, a room needs to be built to the same quality as the rest of the home, have an integrated heating/cooling system, and be habitable year-round to count toward square footage. 

A Florida room is a home addition that has finished walls with windows lining the perimeter, while a screened-in porch, also known as an Arizona room, lacks windows and instead has screens to maintain constant ventilation. Florida rooms provide longer enjoyment throughout the year because they’re closed off and will naturally get heated from the sun, while a screened-in porch will just be the same temperature as the ambient air.