how much does an average porch cost?
<answer> An average cost of porch is $4.48/sf. <context> The total cost for a basic 200sf screened in porch will range from $766 to $1,025 or an average cost of $4.48/sf. 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. Of course, the construction of a completely new screened in porch without an existing deck is much more expensive.