Yes, a screened-in porch will increase your property taxes because it has a foundation and is considered a permanent improvement to your land. The exact amount your taxes will go up depends on the value of your existing home, the value added by the screened-in porch, the size of the structure, your location, and more.

In almost all cases, you will need permits if you plan on building a sunroom over your patio, but regulations and requirements will depend on your municipality. Permits to enclose your patio will usually cost between $300 and $1,000. Since navigating local building codes and zoning requirements is challenging—and the consequences of not following them can be extremely expensive—we strongly recommend hiring a sunroom builder to complete the work and pull the permits for you.

The cost to screen in a porch depends on whether you are adding screens to an existing structure or building a new one from scratch. Adding screens to an existing porch costs about $5 to $7 per square foot, with a national average cost of around $2,800. For example, screening a 12-by-12-foot (144-square-foot) porch would likely cost between $700 and $1,000. If you are building a new screened-in porch, the cost is substantially higher. A new 12-by-12-foot screened-in porch can cost between $6,400 and $18,300, while a new 14-by-16-foot one averages around $11,000. The final price will vary based on the size of the porch, labor costs, and the materials you choose.

Building a sunroom can take anywhere from two weeks to six months. An average-sized sunroom typically takes between two and eight weeks to complete, but more elaborate or larger projects can take longer. The final timeline depends on factors such as the sunroom's size, features, structural requirements, type, and whether it's a retrofit or a new build from scratch.