Sunrooms in Phoenix: permits, historic districts and installers

A note on words: most US contractors say sunroom. A three-season room is glazed but usually unheated and uninsulated; a four-season (or all-season) room is insulated and heated or cooled like the rest of the house; a solarium or conservatory has a glass roof as well as glass walls. A patio enclosure or screen room encloses an existing patio or deck. The permit questions are much the same for all of them, and our guide to sunroom permits in the USA lists what to ask the building department.

In the Southwest an enclosed patio is sometimes called an Arizona room. Whatever the name, if it is enclosed it is treated as an addition, not a patio cover.

Who decides: the Planning and Development Department

The City of Phoenix PDD says residential construction permits are needed when homes are remodelled or extended, and gives porch enclosures and patio covers as examples. You submit plans with a construction permit and plan review application; minor work may get an over-the-counter permit, otherwise review fees are collected and the plans are routed for review before the permit fee is paid. Scottsdale, Tempe, Mesa, Glendale and the other Valley cities have their own departments and fees.

Phoenix permit and plan review fees

Phoenix bases the building permit fee on the project valuation (the higher of the city’s calculated valuation and yours), then adds a plan review fee as a percentage of the permit fee:

Source: City of Phoenix PDD Fee Schedule, approved 17 December 2025 by Ordinance G-7465, effective 20 January 2026 (phoenix.gov). Worked examples (our arithmetic): $40,000 sunroom, $603 permit plus $603 plan review; $80,000 sunroom, $973 permit plus $778.40 plan review. Inspections beyond those included, and electrical work, may add more.

Historic districts

PDD lists 36 residential historic districts designated with Historic Preservation (HP) overlay zoning, plus individually listed properties on the Phoenix Historic Property Register. Building permits that affect the exterior of a listed property need either a Certificate of No Effect, an over-the-counter staff approval for minor work clearly within the general design guidelines, or a Certificate of Appropriateness, which needs a public hearing before an independent hearing officer. Ask the Historic Preservation Office early whether your design could be approved over the counter.

Energy code: climate zone 2B

Phoenix is in hot-dry climate zone 2B. The city adopted the 2024 Phoenix Building Construction Code, including the 2024 IECC as amended by Phoenix, effective 1 August 2025. Under the model code, a thermally isolated sunroom in zones up to 4 needs at least R-19 ceiling and R-13 wall insulation, and the wall between it and the house must meet the full envelope rules. The real challenge in Phoenix is summer heat: a glass roof facing south or west can make a room unusable in summer without solid roof panels, shading and cooling. See glass, polycarbonate or solid roofs.

Typical private prices

We have not found a reliable sunroom price survey for Phoenix alone, so use the national ranges in our US sunroom and conservatory costs guide. HomeGuide puts a custom three-season room at $15,000–$50,000, a four-season room at $20,000–$80,000 and a glass conservatory addition at $50,000–$150,000, and notes that high-cost states such as New York and California can push prices up by as much as 50%. Permit, plan review and any historic-district fees above are extra unless your quote says they are included. Our guide to what to include in a realistic budget lists the other items that catch people out.

How to choose an installer in Phoenix

• Check the ROC licence. Arizona’s Registrar of Contractors (ROC) licenses contractors. The handyman exemption in ARS 32-1121 only covers casual or minor work under $1,000 in total, and never applies when the work needs a local building permit, so anyone building a sunroom or enclosing a patio must be licensed. Check the licence and its classification on the ROC website.
• Residential licence and recovery fund. Arizona runs a Residential Contractors’ Recovery Fund for homeowners harmed by licensed residential contractors. It does not cover unlicensed work, which is another reason to check the licence.
• Cover or room? Most Valley firms build Alumawood-style patio covers and shade screens. Ask whether a quote is for an open cover, a screened room or an insulated, air-conditioned room.
• Who pulls the permit and any HP approval. Get it in writing, and check that the price includes plan review fees.
• Compare quotes. See how to compare quotes.

Sunroom, patio enclosure and conservatory firms serving Phoenix

These businesses appear in public business listings for the Phoenix area. We have not checked their work, prices, licences or insurance, and they have not paid to appear. Services are summarised from each firm’s own website, so ask exactly what it builds and who pulls the permit. Shade is the main business here: most local firms build patio covers, pergolas and screens, with a few sunroom specialists.

You can also read our comparison of conservatory and sunroom options or request quotes.

FAQs

Sources

• PDD Fee Schedule, effective 1/20/2026 (phoenix.gov)
• Residential Additions and Remodels (phoenix.gov, Planning and Development)
• Residential Historic Districts (phoenix.gov)
• Historic Preservation approvals and guidelines (phoenix.gov)
• Building Construction Codes (phoenix.gov)
• ARS 32-1121, persons not required to be licensed (azleg.gov)
• International Energy Conservation Code, section R402.2.13 Sunroom insulation (up.codes)
• How Much Does a Sunroom Cost? (homeguide.com)

Last checked: September 2026. Fees and codes change, often each January or July, so confirm the current figure with the city before you rely on it.

Compare Conservatories is a comparison and referral service, not a sunroom or conservatory installer. We do not design, build or approve sunrooms, and a listing here is not a recommendation.