$45–$70/sqft pressure-treated; $80–$110 composite or IPE.

Do I need a permit for a low patio?

No if under 30in above grade and detached.

Can my Irvine HOA block an ADU?

No. State law preempts HOA prohibition of ADUs. The HOA can review materials and elevations, but cannot deny the permit outright.

Do I need a CDP for a Newport Beach ADU?

Most of Newport's Balboa Peninsula and oceanfront sit in the Coastal Zone, requiring a CDP. Inland Newport parcels typically do not.

Orange County Decks & Patios.

LA decks — backyard ground-level, raised, rooftop. Composite (Trex, TimberTech), redwood, and IPE. Engineer + LADBS permit on raised or attached.

Orange County permits are quick when the parcel is in a streamlined city (Irvine, Anaheim, Santa Ana) and slower when the city is small and beachfront (Laguna, Newport's Balboa Peninsula). The most common schedule risk is the master-planned-community HOA — the building permit is fast, but the architectural review committee runs on its own monthly schedule.

Orange County cost band — 2026

$45 – $110 / sqft

Pressure-treated bottom; composite + steel top.

Orange County permit clock

6–10 weeks ministerial

2–4 weeks depending on size + height.

Scope — start to keys.

Engineering + permit
Footings + posts
Framing + ledger
Decking + railing
Final inspection

What changes about the permit here.

Irvine, Anaheim, Santa Ana: online ADU portals, typically 6–8 weeks ministerial.
Coastal Zone in Laguna, Newport, parts of Huntington — CDP may be required.
Master-planned-community HOAs review independently of city building & safety.
Newport-Inglewood Fault Zone parcels need an Alquist-Priolo geotech investigation.

What moves the Orange County number.

Master-planned HOA design review pushes architectural / cladding budgets 15–25% higher.
Coastal Zone CDP in Laguna / Newport adds $20–60k in soft costs and timeline.
Alquist-Priolo geotech (Newport-Inglewood) commonly $12–30k.
Irvine / Anaheim labor cost runs at LA County median.

In short.

LA deck cost?: $45–$70/sqft pressure-treated; $80–$110 composite or IPE.
Do I need a permit for a low patio?: No if under 30in above grade and detached.
Can my Irvine HOA block an ADU?: No. State law preempts HOA prohibition of ADUs. The HOA can review materials and elevations, but cannot deny the permit outright.
Do I need a CDP for a Newport Beach ADU?: Most of Newport's Balboa Peninsula and oceanfront sit in the Coastal Zone, requiring a CDP. Inland Newport parcels typically do not.

More we build in Orange County.

Decks & Patios in nearby LA areas.

Got a Orange County project in mind?

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