Question: how much does it cost to build a screened in porch on an existing deck?
Answer: The cost of materials for a top-of-the-line screened in porch on an existing deck runs between $860 and $1,070, with an installation cost between $297 and $304. The total cost for a screened-in porch on an existing deck will be between $1,157 and $1,374 or an average cost of $6.33/sf.