How much does it cost to build a 20x20 screened-in porch?

A 20x20 screened porch (400 sq ft) costs $4,000 to $10,000 for screen-only on an existing covered structure, or $20,000 to $48,000 for a full new addition with roof, per HomeGuide 2026 data. In the Blue Ridge mountain market, expect the upper half of those ranges due to terrain, access, and labor factors.

Is adding a screened-in porch worth the cost?

For Blue Ridge AirBNB properties, a screened porch is one of the highest-value summer amenities you can add, comparable to hot tubs in terms of guest appeal. A $25,000 addition can pay back in 4 to 10 peak rental seasons through nightly rate lift and reduced bug-related complaints. For primary residences, it adds 7 months of usable outdoor living space.

Do I need a permit to build a screened porch in Fannin County?

Yes, any screened porch with a new roof structure requires a residential building permit from the Fannin County Building Department. Screen-only work on an existing covered porch may be exempt, but confirm with the county. Permit fees typically run $150 to $500 with a 2 to 4 week approval timeline.

What screen material lasts longest in mountain weather?

Solar screen from manufacturers like Phifer lasts 10 to 15 years at Blue Ridge elevation, compared to 5 to 10 years for quality fiberglass. The higher UV exposure at 1,700 to 3,500 feet accelerates degradation on lower-quality fiberglass, which may show wear within 3 to 5 seasons. Solar screen costs $0.80 to $2.00 per square foot vs. $0.15 to $0.40 for fiberglass.

How long does a screened porch addition take to build?

From initial site visit to completed construction, plan for 6 to 10 weeks total. The actual construction phase takes 2 to 4 weeks for a standard 16x20 addition. Permit approval in Fannin County adds 2 to 4 weeks, and custom materials like EZE-Breeze panels may add 3 to 4 weeks of lead time.

How much does it cost to turn a deck into a screened-in porch?

Converting an existing open deck to a screened porch in the Blue Ridge area costs $8,000 to $25,000+ depending on whether the deck already has a roof. If a roof structure needs to be added, the project involves structural upgrades, permitting, and engineering that push costs well above a simple screen installation.

Screened Porch Addition Cost in Blue Ridge GA (2026)