Approximate cost of building a porch on my existing deck; how much should it cost to repair a sloping front porch? 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. Kits are usually available in a number of standard sizes to fit the distances between the deck columns. The cost to screen the average 200-square-foot porch ranges from $2,000 to $2,800, or $2,400 on average. The screen porch was minimal in extra cost and installation labor except for the modification to the porch design. If your porch already has aluminum frames or similar materials for the screen, a professional will check the anchors and other components to ensure they’re working properly. 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. Therefore, the overall cost to screen a 200square foot porch (existing porch or deck) comes at an average cost … Cost to Install a Screen Porch – 2020 Price Guide A screened-in porch is great for spring and summer entertaining or just relaxing in the shade of your porch without bothersome insects or pests. Colby says . Short Term DIY Screened Porch System. Get an instant, vendor-neutral estimate of Screened In Porch options and costs in your zip code.Our cost guide has been updated for 2020 to reflect current fair wages and material option costs for Screened In Porches. Colby says . ft. by $1.50 to $2.25.A typical 12’x12′ back porch will cost you $860 to $1,200. The total costs $3 to $5 per square foot for materials, and $2 per square foot for labor. The screen porch system we usually use is floor to ceiling and is self supporting. Average Cost to Build a Screened-In Porch. Consider purchasing a screen frame kit to make the project easier and avoid the added cost involved in building your own framework. So, You Want to… Screen In a Porch Building yourself a space that blends the best that the outdoors and indoors have to offer can be easy and affordable if you're starting with an existing porch. Screen in porch Costs For your project in zip code 98102 with these options, the cost to screen in porch starts at $29.41-$42.66 per square foot.