Deck Builderin Irvine, CA
A deck builder in Irvine answers to the City, the Orange County Fire Authority and often an HOA. Platforms up to 30 inches above grade are exempt on the City's list, a second-story deck needs a permit and an engineer's plans, and a patio cover of any size needs a permit. Fire zones expanded on July 23, 2025.
Irvine's decks sit on small lots in planned villages. The city grew out of the Irvine Ranch, incorporated on December 28, 1971 and gave each village its own architectural theme, and Census estimates for 2024 count 47,287 detached and 22,504 attached single-family homes among 121,814 units. The newer villages, among them Orchard Hills, Portola Springs and Quail Hill, are some of the places where the City's 2025 fire hazard map expanded, which puts a wood-or-composite choice on top of the usual permit questions.
MDG Builders, CSLB #1040337, is a general contractor in Tarzana. We draw the deck, route it through Irvine's Building and Safety office and book a licensed carpentry subcontractor to build it, with the HOA and fire questions raised at the first visit. Materials and ranges are on the decks page, and the Irvine overview shows the rest of our trades here.
What Irvine's Building and Safety office, OCFA and the Zoning Ordinance say about decks and patio covers
Where decks permits come from in Irvine: City of Irvine Community Development Department, Building and Safety (Permit Processing Center).
- A second-story deck needs a building permit in Irvine. If the deck is more than 30 inches above grade the application must include structural plans and calculations signed by a California registered structural engineer, it must meet zoning setbacks (for many single-family properties 5 feet from the side line and 10 feet from the rear line), and a condominium owner must supply the HOA's design approval letter.
- The City requires a permit for a patio cover or gazebo of any size. A solid-roof patio cover follows the same setbacks as a building (for many single-family lots 5 feet side and 10 feet rear), while an open-lattice cover needs support posts at least 3 feet from any property line and a roof or eave at least 2 feet from it. Open-lattice covers that meet City standards need no engineer's stamp, all other types do, and drawings for structures over 6 feet tall must be stamped by a California licensed civil or structural engineer.
- On the City's patio cover page, a 15 foot setback applies in the 2.1A zoning district, which includes much of Shady Canyon, and the maximum height for a gazebo or patio cover in many areas of Shady Canyon is 12 feet instead of the usual 35 feet. If the property is in a Fire Ordinance Zone, the Orange County Fire Authority may need to review the patio cover's material and design through its Un-Enclosed Accessory Structure Approval Form.
- OCFA's planning page says a project in or next to a State or Local Responsibility Area Fire Hazard Severity Zone, or next to open space with non-irrigated vegetation, generally needs a Fuel Modification plan (PR125) and an Accessory Structure plan (PR182), and that homes in certain zones may need prescribed home hardening features.
- OCFA's vegetation management page describes defensible space as, in many cases, a 360 degree approach of 100 feet from a structure or to the property line, with vegetation controlled, trimmed or removed to reduce wildfire threat.
Do Irvine's expanded fire hazard zones change what a deck can be made of?
They can. In June 2025 the City took on the State Fire Marshal's 2025 Local Responsibility Area map with no changes, effective July 23, 2025, and it has Moderate, High and Very High tiers. It says the expanded zones include Orchard Hills, Woodbury, Portola Springs, Quail Hill, Turtle Rock, Laguna Altura, Los Olivos and Irvine Spectrum, and that buildings in any zone follow the 2025 California Wildland-Urban Interface Code. We could not read the map itself, so we name no tier for any village; the City's interactive map shows a parcel's tier.
Timing matters. Applications dated on or after July 23, 2025 in a 2025 zone must meet the building and fire requirements, and projects submitted earlier stay under the 2012 map, per the City. For decking, section R337.9.3 of the 2022 California Residential Code allows wildland-urban interface surface materials that are tested to ASTM E2632 or E2726, ignition resistant, fire-retardant treated or noncombustible.
We did not check whether Irvine's adopted 2025 text keeps those exact lines, and a composite brand should be confirmed against the State Fire Marshal's listing and not the box.
Does OCFA review a deck or patio cover next to open space in Irvine?
It can. Fire service in Irvine comes from the Orange County Fire Authority, a regional agency that covers 23 cities and all unincorporated areas of the county, per OCFA. Its planning page says a project in or next to a State or Local Responsibility Area fire hazard zone, or next to open space with non-irrigated vegetation, generally needs a Fuel Modification plan (PR125) and an Accessory Structure plan (PR182), and homes in certain zones may need prescribed home hardening features.
The City's patio cover page adds that on a property in a Fire Ordinance Zone, OCFA may review a patio cover's material and design through its Un-Enclosed Accessory Structure Approval Form. We could not find the boundaries of those zones, which are a different layer from the State map, so ask the City whether an address is inside one.
Defensible space is the neighboring rule. OCFA describes it, in many cases, as a 360 degree approach of 100 feet from the structure or to the property line, with vegetation controlled, trimmed or removed. We read no Irvine-specific vegetation ordinance, so ask the builder what that means for the planting around the boards.
Can you build a deck without a permit in Irvine?
A low one can skip it, and a high one cannot. The City's exempt list, called Permits Not Required, covers platforms, walks and driveways that stand no more than 30 inches above grade with no basement or story beneath. A second-story deck needs a building permit. Above 30 inches the application must include structural plans and calculations signed by a California registered structural engineer, and the deck must meet zoning setbacks, which on many single-family properties are 5 feet from the side line and 10 feet from the rear line.
The model residential code is stricter on attachment. Its section R105.2 exempts only a deck of 200 square feet or less, no more than 30 inches above grade at any point, not attached to a dwelling and not serving the required exit door. We did not find the 200 square foot line on a City page, so treat any attached deck as permit-required until Building and Safety says otherwise at 949-724-6313.
A condominium owner must supply the HOA's design approval letter, and Bulletin 222 says work that affects a condo common area needs the HOA Board's written permission.
- Is the deck 30 inches or lower above grade everywhere?
- Is it free-standing and away from the exit door?
- Is the HOA's approval letter in hand?
What are the rules for a patio cover or shade structure over an Irvine deck?
A permit is required for a patio cover or gazebo of any size, according to the City. A solid-roof cover follows the same setbacks as a building, which on many single-family lots means 5 feet at the side and 10 feet at the rear. An open-lattice cover needs support posts at least 3 feet from any property line and a roof or eave at least 2 feet from it.
Engineering depends on type. Open-lattice covers that meet City standards need no engineer's stamp, all other types do, and drawings for structures over 6 feet tall must be stamped by a California licensed civil or structural engineer. Ask the builder which category a design falls in before you compare bids, because the stamp is a separate cost.
Application is electronic. The City's Permitting Process 101 page says every application is filed online and gets a code review, so ask who files and tracks it.
What do Turtle Rock, University Park and Shady Canyon change about a deck or cover?
Turtle Rock and University Park are where zero lot line homes are most common, and the City says a patio cover or gazebo there may not sit in an easement area. Easements also restrict eaves, gutters and covers in general, with eaves banned over an easement narrower than 3 feet, so a cover that attaches to the house wall needs the recorded easement read first.
Shady Canyon has its own numbers. On the City's patio cover page a 15 foot setback applies in the 2.1A district, which includes much of Shady Canyon, and in many areas there a gazebo or patio cover may be no more than 12 feet high instead of the usual 35.
Footings follow the lot. We found no rule that applies the City's soil report triggers, slope proximity among them, to a deck post, so ask Building and Safety if the lot sits beside a slope.
Do you need a permit for deck repair in Irvine, and what does the inspector check?
Swapping worn boards in place is likely the simple case, but we found no Irvine sentence that says so, so send Building and Safety photos and ask. Replacing framing, a ledger, stairs or guards looks more like new construction. The 2022 California Residential Code asks for a ledger of at least 2 by 8, pressure treated, with no concentrated beam loads and no fastening to stone or masonry veneer (R507.9.1.1), plus lateral hold-downs of two 1,500 pound devices within 24 inches of each end, or four 750 pound devices (R507.9.2).
Guards come with repairs. Section R312.1.1 requires one where the walking surface is more than 30 inches above grade within 36 inches of the edge, R312.1.2 sets a 42 inch minimum, and R312.1.3 stops a 4 inch sphere at any opening, per the CRC text. We did not check whether Irvine varies them.
Wood invites trouble. UC's pest management pages say drywood termites are most prevalent in southern California and infest decks and fences, so a repair should fix the moisture source too. About 21 percent of Irvine's homes predate 1980, so a repair that disturbs old paint may bring in EPA's lead-safe rule.
What does a deck builder charge in Irvine, wood or composite?
No Irvine price study turned up, so the anchor is Remodeling magazine's 2025 Cost vs. Value report for Los Angeles. The report's 16 by 20 foot deck, with bench, planter, three steps and full railing, costs $18,419 in wood and recoups 99.6 percent at resale, against $26,872 and 73.9 percent for composite. Angi's Los Angeles page, updated October 28, 2025, shows $13,570 on average, within $6,335 to $20,871. Irvine's median owner-occupied home value is $1,510,300 per Census estimates, but the resale percentages belong to Los Angeles and may not carry over.
We plan around $45 to $75 per square foot for treated wood and $65 to $110 for composite, which puts a 16 by 20 deck near $14,500 to $24,000 in wood and $21,000 to $35,000 in composite, permits and engineering extra. Second-story and engineer-stamped decks have no independent price source and are priced after a site visit. Carpenters in the Los Angeles-Long Beach-Anaheim metro area averaged $37.79 an hour in May 2025, a wage and not a billing rate.
CSLB's C-5 framing class covers framing and rough carpentry. For permitted work the City asks for a City of Irvine business license, and our license check guide shows how to verify the CSLB number.
Deck photos from Irvine and nearby communities
Posts, framing, rails, patio covers and finished decks from Irvine and nearby towns, shown at the steps that matter. Tap any photo to enlarge it.
What decks costs around Irvine
Dollar figures on this page are Los Angeles planning ranges from our decks page, not an Irvine bid, and permits, engineering and any OCFA plans belong on separate proposal lines. For the same property, see flooring in Irvine and concrete in Irvine. Outside Orange County, compare deck building in Long Beach and decks in Los Angeles.
| What it covers | Typical range |
|---|---|
| Pressure-treated wood deck | $45 to $75 per square foot |
| Composite deck | $65 to $110 per square foot |
| 16 by 20 foot wood deck (320 sq ft) | About $14,500 to $24,000 |
| 16 by 20 foot composite deck | About $21,000 to $35,000 |
| Hillside, second-story, rooftop and ipe decks | Priced by site visit |
| Permits and engineering | Quoted as separate lines |
Irvine deck questions, answered
Can I build a deck without a permit in Irvine?
Only a low one. The City's list exempts platforms not more than 30 inches above grade and not over a basement or story below. A second-story deck needs a permit and a structural engineer's plans above 30 inches. Attached decks are safest treated as permit-required, so call Building and Safety at 949-724-6313.
What is the largest deck you can build without a permit in Irvine?
The City's list sets a 30 inch height line and gives no square footage. The model residential code exempts a deck of 200 square feet or less, no more than 30 inches high, detached and away from the exit door, but we did not find that on a City page. Confirm with Building and Safety.
How far from the property line must a deck be in Irvine?
On many single-family properties a second-story deck must be 5 feet from the side line and 10 feet from the rear line, per the City. For a ground-level deck we could not read the Zoning Ordinance text, so ask the Planning Counter at 949-724-6308 for the district's numbers.
Is deck railing 36 or 42 inches in Irvine?
Forty-two inches under the model residential code, which asks for a guard above 30 inches from grade and a gap too small for a 4 inch sphere. Whether Irvine's adopted text differs was not checked, so ask the inspector which edition governs.
How much should a 16x20 deck cost in Irvine?
In Remodeling magazine's 2025 Cost vs. Value report for Los Angeles, a 16 by 20 foot deck with bench, planter, steps and railing is $18,419 in wood and $26,872 in composite, while Angi's Los Angeles page averages $13,570. No Irvine study turned up, so a site visit sets the price.
How much would a 20x20 deck cost in Irvine?
Treated wood at $45 to $75 per square foot makes 400 square feet about $18,000 to $30,000, and composite at $65 to $110 makes it $26,000 to $44,000. Those multiply Los Angeles planning ranges, medium confidence for wood and lower for composite, permits and engineering extra.
Is it cheaper to build a wood deck or a composite deck in Irvine?
Wood costs less to build. Cost vs. Value 2025 for Los Angeles shows $18,419 for wood and $26,872 for composite, recouping 99.6 percent against 73.9 percent. In a fire hazard zone, decking material also has rules, so confirm any composite brand with the State Fire Marshal's listing.
Do I need a permit for deck repair in Irvine?
Replacing boards in place is probably simple, though no Irvine sentence we read says so. New framing, a ledger, stairs or guards, and any attached deck, point toward a permit. Send Building and Safety photos before you hire a deck repair crew.
Can I put a patio cover over my deck in Irvine?
Yes, with a permit. The City requires one for a patio cover or gazebo of any size. A solid roof follows building setbacks, 5 feet at the side and 10 feet at the rear on many lots, and an open-lattice cover needs posts 3 feet from any property line. In Shady Canyon the height cap is 12 feet.
Does Irvine's new fire hazard map affect my deck?
It can. The City adopted the State Fire Marshal's 2025 map effective July 23, 2025, and applications dated on or after that date in a zone must meet the wildland-urban interface rules. Check your parcel on the City's interactive map, and ask the builder whether OCFA plans apply.
Send the address, a photo and how high the deck sits
Say how high the deck sits, whether it touches the house and which village you live in. The fire map, easement and HOA questions come with us to the first visit.