How Much Does a Deck Cost in Los Angeles County?
A clear, up-to-date breakdown of deck building costs in Los Angeles County by material, size, and project type, plus permits, ROI, and financing.
Deck cost in Los Angeles County
In Los Angeles County, a new deck typically costs $25 to $65 per square foot installed. Most homeowners spend between $9,000 and $26,000 for a standard 300 to 400 square foot deck, depending on the material, height, site access, and features. Pressure-treated wood sits at the low end, while premium composite decks with railings and lighting reach the higher end.
Deck cost by decking material in LA County
The material you choose is the biggest single factor in your deck’s price and long-term upkeep.
| Decking Material | Best For | Installed Cost / sq ft |
|---|---|---|
| Pressure-treated wood | Budget-friendly, paintable | $25–$40 |
| Cedar | Natural look, rot resistant | $30–$48 |
| Redwood | Rich color, durable | $35–$50 |
| Composite (Trex, TimberTech) | Low maintenance, 25-yr warranty | $40–$65 |
| Tropical hardwood (Ipe) | Premium, extremely durable | $50–$75 |
Prices are typical installed ranges for Los Angeles County and vary with design, height, and site conditions.
Deck cost by size
Larger decks cost more overall but often less per square foot as fixed costs spread out.
| Deck Size | Typical Use | Wood | Composite |
|---|---|---|---|
| Small (150–200 sq ft) | Balcony, entry, small patio | $4,500–$9,000 | $7,000–$13,000 |
| Medium (300–400 sq ft) | Dining & lounge space | $9,000–$18,000 | $14,000–$26,000 |
| Large (500–600 sq ft) | Full outdoor living area | $15,000–$27,000 | $22,000–$40,000 |
| Multi-level / hillside | Sloped lots, views | Add 20–40% for engineering & framing | |
Cost of related outdoor projects
Beyond new decks, here is what related outdoor living projects typically cost in LA County.
| Project | Typical LA County Cost |
|---|---|
| New wood deck | $25–$50 / sq ft |
| New composite deck | $40–$65 / sq ft |
| Pergola construction | $4,000–$12,000 |
| Patio cover / enclosure | $5,000–$20,000 |
| Porch construction | $8,000–$30,000 |
| Fence building | $30–$60 / linear ft |
| Deck repair | $500–$3,000 |
| Deck restoration / refinishing | $2–$5 / sq ft |
| Deck staining | $1.50–$4 / sq ft |
| Deck waterproofing (coating) | $5–$12 / sq ft |
What affects the price of your deck
- Material grade — composite and hardwoods cost more than pressure-treated pine
- Size and height — elevated and hillside decks need deeper footings and bracing
- Site access and grading — tight or sloped lots add labor
- Features — railings, stairs, built-in seating, and lighting add cost
- Permits and engineering — required for most decks in LA County
- Demolition — removing an old deck adds to a replacement project
Permit Costs
A building permit for a deck in Los Angeles County typically runs $500 to $1,500 or more, based on the project’s valuation. We pull every required permit and coordinate inspections for you.
Return on Investment
A well-built deck often recoups roughly 50% to 65% of its cost at resale and adds usable outdoor living space and curb appeal that buyers value.
Financing
Many homeowners fund a deck with a home equity loan, HELOC, FHA 203(k), or contractor financing, spreading the cost into manageable monthly payments.
Deck pricing questions from LA County homeowners
Most new decks in Los Angeles County cost $25 to $65 per square foot installed. A typical 300 to 400 square foot deck runs about $9,000 to $26,000, depending on material, height, site access, and features. We provide a detailed written estimate after a free on-site consultation.
For many homeowners, yes. Composite decking costs more up front, about $40 to $65 per square foot, but needs almost no maintenance and lasts 25 years or more. Over the life of the deck, the savings on sanding, staining, and sealing often make composite the better value.
A deck building permit in Los Angeles County typically costs $500 to $1,500 or more, based on the project’s valuation. Diamond Deck Builders prepares the drawings and pulls every required permit as part of the project.
Yes. A well-built deck often recoups roughly 50 to 65 percent of its cost at resale and adds usable outdoor living space and curb appeal. Low-maintenance composite decks are especially attractive to buyers in the Southern California climate.
A ground-level pressure-treated wood deck is the most budget-friendly option, starting around $25 per square foot. Keeping the deck low, simple in shape, and close to grade reduces framing, railing, and permit costs while still adding valuable outdoor space.
Deck pricing depends on your specific design, material, and site. The best way to get an accurate number is a free on-site consultation. Call Diamond Deck Builders at 213-810-9972 and we will measure, discuss options, and provide a detailed written estimate.
Get an exact deck quote for your LA County home
Free on-site consultation and a detailed, no-surprise written estimate anywhere in Los Angeles County.