Deck Builderin Tustin, CA
A deck builder in Tustin starts with a phone call, because the City's own documents conflict. Its FAQ says decks need a permit, while an older guide exempts wood decks up to 30 inches above grade. Patio covers need plans, fire pits must be gas, and OCFA plans can apply next to open space or slopes.
Tustin's decks sit on very different ground. Old Town, platted around 1870, has houses from the 1880s on a compass-point grid, the 1950s and 1960s tracts fill the middle, and Tustin Ranch came from 2,257 acres of Irvine Ranch agricultural preserve annexed a few years after the Marine Corps air station. Census estimates for 2024 count 9,657 detached and 5,106 attached single-family homes among 30,118 units, with a median owner-occupied value of $1,104,700, so a deck is often the biggest outdoor spend on a lot.
MDG Builders, CSLB #1040337, is a general contractor in Tarzana. We draw the scope, take the permit questions to Tustin's Building Division and book licensed carpentry subcontractors for the framing and surface. Wood and composite options are on the decks page, and the Tustin overview lists the other trades we manage here.
What Tustin's Building Division, OCFA and Ordinance No. 1569 say about decks and patio covers
Where decks permits come from in Tustin: City of Tustin Community Development Department, Building Division.
- The City's Building FAQ says solid cover patios, lattice patios and decks require a building permit with full dimensioned plans (site plan, construction detail, material type and size), and that every garden shed needs a permit. The older room additions guide exempts wood decks not more than 30 inches above grade, so the two City documents differ; ask Building (714-573-3130) before building a low deck.
- The City's Forms and Handouts page lists a Patio Cover Standard (a scanned PDF that could not be read here) for contractors and an Outdoor Cooking Appliances handout for homeowners.
- Ordinance No. 1569 allows gas fire pits and outdoor fireplaces only when approved by the Building Department and designed to burn only a gas flame, with no combustible construction within 3 feet of the vertical column above the device at R-3 homes. It bans solid-fuel outdoor fires under hazardous conditions that include sustained winds predicted over 8 mph with humidity under 25 percent or a red flag declaration, and bans wood and solid-fuel burning in a fuel modification zone or the wildland-urban interface.
- 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 or slopes, generally needs a Fuel Modification plan (PR125) and an Accessory Structure plan (PR182).
- On its vegetation management page OCFA calls defensible space, in many cases, a 360 degree approach reaching 100 feet from a structure or to the property line, with vegetation controlled, trimmed or removed to reduce wildfire threat.
Can you build a deck in Tustin without a permit, and which City document is right?
Do not assume. The City's Building FAQ says solid cover patios, lattice patios and decks need a building permit with full dimensioned plans, showing the site plan, construction detail and material type and size. A 2013 room additions guide exempts wood decks not more than 30 inches above grade and not over a basement or story below. Both are City documents, and they disagree.
Sheds show the same split. The FAQ says every garden shed needs a permit, while Ordinance No. 1569 exempts one-story detached sheds and playhouses of 120 square feet or less with no utilities. Until the Building Division answers at 714-573-3130, treat any attached deck, any deck over 30 inches and any shed as permit-required.
Time limits conflict too: the Permits Process page says 180 days, the FAQ 360 days to start, and the ordinance 12 months with 180 days of suspension. We state it that way rather than choose one, and we recommend asking.
- Does the deck touch the house?
- How high is the highest point above grade?
- Is there a shed or cover on the same plan?
How does plan check by appointment work for a patio cover over a Tustin deck?
It is a one-hour review for small jobs. The Building Division offers plan check by appointment for minor projects such as patio covers, fences and free-standing block walls, pools and spas, and kitchen and bathroom remodels, with a maximum review time of one hour. Plans go by email to planpermitsubmittals@tustinca.org at least 24 hours before the requested date, with the subject line Plan Check by Appointment.
Planning and Public Works staff join the appointment to review their own requirements, so setbacks and site water get answered in the same sitting. Applications, plans and payments then run through the Citizen Self Service portal. The City warns that fraudulent invoices are on the rise and says it never asks for a bank routing or wire number.
The City's Forms and Handouts page lists a Patio Cover Standard, but that file is a scan we could not read, so we state no cover height or setback. A first-submittal plan check takes about 10 working days by the City's own estimate, and resubmittals return within 5.
Can you add a deck behind an Old Town Tustin house?
Yes, but expect design review. The Cultural Resources Overlay District, created on June 20, 1988, requires a Certificate of Appropriateness for exterior construction that needs a building permit. The City's historic resource brochure adds that exterior changes call for the Residential Design Guidelines and the Secretary of the Interior's Standards.
A rear deck that needs a permit under the FAQ therefore likely needs the certificate as well. The code text we read is a Zoneomics copy rather than the City's official code host, and the Residential Design Guidelines link returned no document, so ask Planning at 714-573-3140 what it reviews.
The district carries homes from the 1870s and 1880s. Attaching a ledger to an old wall means opening it up to see what is there, and our room addition guide covers how a general contractor handles that kind of tie-in.
Does Tustin's 2025 fire hazard map change deck materials or fire pit rules?
It may, depending on the parcel. CAL FIRE and the State Fire Marshal released the 2025 Local Responsibility Area maps on March 24, 2025, and the City says its map puts parts of Tustin in the Very High, High and Moderate tiers. A June 3, 2025 council item asked for an ordinance to adopt the maps, but we could not confirm adoption or read which streets fall in each tier, so check an address on CAL FIRE's viewer. The 2025 Wildland-Urban Interface Code applies to plan reviews filed on or after January 1, 2026.
In interface areas the California Residential Code lists allowed deck surfaces: tested, ignition-resistant, fire-retardant-treated or noncombustible boards. A UC Extension summary said some composites did not meet the ignition-resistant definition, so confirm any product against the State Fire Marshal listing.
Fire pits are narrower. Ordinance No. 1569 allows gas fire pits and outdoor fireplaces only when the Building Department approves them and they burn only a gas flame, with no combustible construction within 3 feet of the column above the device. It bans wood and solid fuel in a fuel modification zone or the interface, and bans solid-fuel fires when sustained winds are forecast over 8 mph with humidity under 25 percent.
Does OCFA review a deck next to open space or a slope in East Tustin?
Often it does. Fire service in Tustin comes from the Orange County Fire Authority, which serves 23 cities, and its planning page says a project in or next to a Fire Hazard Severity Zone, or next to open space with non-irrigated vegetation or slopes, generally needs a Fuel Modification plan (PR125) and an Accessory Structure plan (PR182). That reaches a deck, cover or pergola on a rear slope.
OCFA calls defensible space, in many cases, a 360 degree approach that reaches 100 feet from the structure or to the property line, with vegetation trimmed or removed. A deck with brush underneath works against that, so the plan should show the ground below the boards as well as the boards.
Slopes add City rules. A grading permit is required for a cut slope over 5 feet, and the soils policy exempts retaining walls up to 6 feet of retention with no surcharge from a soils report. The City's wall and addition handouts also ask for homeowners association approval where one exists.
Do you need a permit for deck repair in Tustin, and what fails first?
We found no Tustin rule that separates repair from new construction for decks, so ask before replacing more than boards. The City's fence guide shows how it thinks: a permit is required where maintenance replaces footings or joints on walls over 6 feet. Swapping surface boards is cosmetic, while new posts, beams or a ledger are structural.
The ledger is where most failures start. Under the 2022 California Residential Code, which Tustin replaced with the 2025 edition for plan reviews filed from January 1, 2026, a ledger is at least a 2x8 pressure-treated board, flashed, with hot-dipped galvanized or stainless fasteners and lateral hold-downs near each end. Guards are required where the walking surface is more than 30 inches above grade, at least 42 inches high, with openings that stop a 4 inch sphere. Confirm the current section numbers.
Wood has an enemy here too. UC Integrated Pest Management says drywood termites are most prevalent in southern California and infest decks and fences, and the fix starts with moisture and sealed exterior wood.
What does a deck builder charge in Tustin, wood or composite?
No Tustin study with a stated method turned up, so the best anchor is Los Angeles. Remodeling magazine's 2025 Cost vs. Value report prices a 16 by 20 foot deck with a bench, planter, three steps and a full railing at $18,419 in treated wood, recouping 99.6 percent at resale, and $26,872 in composite, recouping 73.9 percent. Angi's October 2025 Los Angeles page shows a project average of $13,570.
Our planning range from those sources is $45 to $75 per square foot in pressure-treated wood and $65 to $110 in composite, so a 16 by 20 runs about $14,500 to $24,000 or $21,000 to $35,000. Permits and engineering are extra. Hillside, second-story and exotic hardwood decks have no independent price source, so we quote them only after a visit. Federal data for May 2025 puts carpenters in the Los Angeles-Long Beach-Anaheim area at $37.79 an hour.
A wood deck is framing, CSLB's C-5 class, which suits a general contractor. Our license check guide shows how to verify a number.
Deck photos from Tustin and nearby communities
Posts, framing, rails, patio covers and finished decks from Tustin and nearby towns, shown at the steps that matter. Tap any photo to enlarge it.
What decks costs around Tustin
Dollar figures on this page are Los Angeles planning ranges from our decks page, not a Tustin bid, and permits, engineering and any OCFA plans belong on separate proposal lines. For the same property, see flooring in Tustin and concrete in Tustin. Close by, compare deck building in Irvine and decks in Orange.
| 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 |
Tustin deck questions, answered
Can I build a deck without a permit in Tustin?
Possibly, but the City's documents conflict. The Building FAQ says decks need a permit with dimensioned plans, while a 2013 guide exempts wood decks up to 30 inches above grade and not over a basement. Until the Building Division answers at 714-573-3130, treat an attached or raised deck as permit-required.
Do I need a permit for a shed or low deck in Tustin?
Ask first, because the City disagrees with itself. Its FAQ says every garden shed and every deck needs a permit, yet Ordinance No. 1569 exempts one-story sheds of 120 square feet or less with no utilities, and an older guide exempts wood decks under 30 inches. The Building Division can settle your case.
Can I put a patio cover over my deck in Tustin?
Yes, with a permit and plans. Patio covers can go through the Building Division's plan check by appointment, a review of up to one hour booked by email 24 hours ahead. The Patio Cover Standard on the City's forms page was unreadable to us, so we state no height or setback.
Can I add a gas fire pit to a Tustin deck?
Only a gas-only unit the Building Department approves, with no combustible construction within 3 feet of the column above it at R-3 homes. Ordinance No. 1569 also bans wood and solid fuel in fuel modification zones and the wildland-urban interface, and bans solid-fuel fires in red flag conditions.
Does Tustin's new fire hazard map affect my deck?
Possibly. The City says its March 2025 map puts parts of Tustin in the Very High, High and Moderate tiers, but we could not confirm which streets, or adoption by ordinance. Look up the address on CAL FIRE's viewer, then ask the Building Division about decking materials. The 2025 interface code applies from January 1, 2026.
Do I need OCFA approval for a deck in Tustin?
If the lot is in or next to a fire hazard severity zone, or backs onto open space or slopes with non-irrigated vegetation, generally yes. OCFA's planning page says such projects need a Fuel Modification plan (PR125) and an Accessory Structure plan (PR182). Ask the Building Division whether your address triggers them.
Is deck railing 36 or 42 inches in Tustin?
Forty-two inches is the minimum guard height in the California Residential Code, required where the walking surface is more than 30 inches above grade, with openings that stop a 4 inch sphere. We read the 2022 edition, and Tustin enforces the 2025 edition for plan reviews filed from January 1, 2026, so confirm the section.
How much should a 16x20 deck cost in Tustin?
Our Los Angeles based range is about $14,500 to $24,000 in pressure-treated wood and $21,000 to $35,000 in composite for 320 square feet, with permits and engineering extra. Cost vs. Value's 2025 spec prices wood at $18,419 and composite at $26,872. We found no Tustin study, so a visit sets the bid.
Is it cheaper to build a wood deck or a composite deck in Tustin?
Wood costs less up front: $18,419 versus $26,872 for the same 16 by 20 deck in the 2025 Cost vs. Value report for Los Angeles. Wood recouped 99.6 percent at resale and composite 73.9 percent. Those are Los Angeles figures, and wood needs more upkeep and termite attention.
Do I need a permit for deck repair in Tustin?
We found no Tustin rule that treats repairs separately, so ask the Building Division at 714-573-3130 before replacing posts, beams or a ledger. Replacing surface boards alone is cosmetic. Structural repairs, new footings or work on the ledger connection are the point where a permit becomes likely.
Send the address, a photo and how high the deck sits
Say how high the deck sits, whether it touches the house and whether the lot backs onto a slope or open space. The permit conflicts, OCFA and HOA questions come with us to the first visit.