Possibly. A current survey or plat may be required to show property lines, setbacks, easements, and the proposed structure. Homeowners are responsible for providing a survey if requested or required by the permitting authority. HOA or architectural approval is separate from city or county permitting and should be checked early.

Portsmouth requires building permit applications for new structures, additions, and alterations. Zoning approval may also be required before construction, depending on the location and scope.

Projects in Portsmouth may include wood, composite, or PVC decks; covered porches; screen rooms; three-season and four-season sunrooms; Eze-Breeze or glass enclosures; concrete or paver patios; patio covers; pergolas; pavilions; and louvered roof systems. The best option depends on the home, lot, budget, and intended use.

The largest factors are size, demolition, foundation or framing, material level, roof complexity, stairs and railing, glazing, electrical or HVAC work, access, permits, engineering, and hidden site conditions. A detailed scope is more useful than a square-foot price because two projects of the same size can require very different work.