Patios and Patio Covers
in California

Most California households spend more time on the patio than in any other part of the yard. Coffee happens there in the morning and dinner on warm nights, and with a mild climate that season runs well past summer. A deck, a pool or a garden gets used on occasion; a good patio gets used most days.

Many homes now treat the patio as a room rather than a slab: a roof or pergola overhead, lights and fans, and sometimes walls that open and close. Builders call the enclosed version a California room, and buyers often ask whether a house has one.

The cover decides whether anyone sits on the patio at 3 p.m. in August. Sun is welcome most of the year here and punishing on a summer afternoon, so choose the cover by budget, by which way the patio faces, and by what you plan to do under it.

Solid covers block sun and rain completely, which is why they get the most daily use. Aluminum, wood and insulated panels run $20 to $60 per square foot installed on HomeGuide's figures, and solid wood can reach $120. Aluminum systems such as Alumawood and Four Seasons are common in California because termites cannot eat them, they do not burn, and they need almost no care. Wood looks warmer but needs sealing from time to time and can attract termites. Every solid cover counts as a permanent structure, so it needs a building permit and has to meet setback, height and structural rules.

Lattice is the low-cost way to get shade, at $20 to $40 per square foot installed for open wood lattice. How much shade you get depends on the slat spacing and direction, and the light comes through in patches. HomeGuide notes that some building departments only require a pergola permit above 200 square feet, but cities differ, so ask before you build. Jasmine, wisteria or bougainvillea trained over the top thicken the shade each year.

Pergolas are frames of open beams that cut the sun partway. HomeGuide puts a prefabricated pergola at $1,450 to $5,750 installed and a custom build at $30 to $65 per square foot. Wood frames use cedar, redwood or Douglas fir; other frames are aluminum, vinyl or fiberglass. Louvered systems from makers such as StruXure and Equinox have motorized slats you rotate from open to shut, which handles sun, shade and light rain from one switch; they average $6,500 to $18,000 installed. A retractable canopy over a standard pergola adds $500 to $1,750.

A California room is a covered patio closed in with sliding glass walls, bi-fold doors or removable screens, so it works open or shut. HomeGuide prices a new enclosed patio with walls and windows at $100 to $350 per square foot and a new screened patio at $50 to $175. Closed up, the room can hold ceiling fans, heaters or a mini-split system. Expect full building permits plus electrical and sometimes mechanical permits. Cost vs Value 2025 does not track California rooms. Its nearest project, the backyard patio build, recoups 47.2% of its cost at resale in Los Angeles and 48.1% in San Francisco, so plan an outdoor room around how you will live in it, not as an investment that pays you back.