--- title: "Deck & Patio Cost in Altadena (2026) | Keystone Connect" description: "Deck & patio in Altadena, CA: $30–$70 per sq ft for deck and $13–$43 per sq ft for patio. Mid-size: $10k–$27k. Free vetted bids." url: https://keystoneconnect.us/cities/altadena/deck-patio updated: 2026-10-27 --- Altadena, CA · West San Gabriel Valley # Deck & patio prices in Altadena, CA: 2026 ranges A deck & patio in Altadena costs $30–$70 per sq ft for deck and $13–$43 per sq ft for patio, with a typical mid-size deck or patio running $10k–$27k. Small projects start around **$4k**; large or high-end work can reach **$60k** or more. As of 2026, costs in Altadena run about 8% above the LA County baseline due to Eaton Fire rebuilds and LA County rebuild permitting. Updated October 2026 Get matchedCost by size Cost (Deck) per sq ft $30–$70 per sq ft Cost (Patio) per sq ft $13–$43 per sq ft ## Deck & Patio Cost by Size in Altadena Totals adjusted for the Altadena market (1.08× LA County baseline). Ranges include labor, materials, permits, and contractor overhead. Deck & Patio cost by size in Altadena, CA | Size | Type | Range | Low | High | | --- | --- | --- | --- | --- | | Small | Patio or small deck | 100–200 sq ft | $4k | $11k | | Medium | Deck or covered patio | 250–450 sq ft | $10k | $27k | | Large | Multi-level or pergola + patio | 500+ sq ft | $24k | $60k | ## What Affects Deck & Patio Cost in Altadena? - Material (concrete vs pavers vs composite deck). - Permit (decks over 30" need one). - Cover or pergola. - Drainage. - Hillside / sloped site. - Altadena market premium: local pricing reflects Eaton Fire rebuilds and LA County rebuild permitting, which shifts totals about 8% above the LA County baseline. ## Get exact deck & patio bids in Altadena Two or three licensed builders who work in Altadena, pricing the same scope. Tell us about your project[or call (818) 482-8365](tel:+18184828365) ## Deck & Patio Sub-Type Comparisons ### Concrete Patio vs Paver Patio Concrete patios are the cheapest hard surface at $14–$20/sq ft but crack; pavers cost $25–$45/sq ft, allow individual repair, and add resale appeal in LA. ### Composite Deck vs Wood Deck Composite (Trex/TimberTech) costs $40–$75/sq ft and is maintenance-free for 25+ years; pressure-treated wood is $28–$45/sq ft but needs re-staining every 2–3 years in LA sun. ## How to Get the Best Price on a Deck & Patio in Altadena 1. Get line-itemized bids from two or three builders on the same scope; Altadena deck & patio pricing commonly varies 10–25% between contractors. 2. Lock major materials and finishes before signing; mid-project change orders are the #1 cost driver on deck & patio jobs. 3. Bid in shoulder seasons (Jan–Mar or Sep–Oct) when Altadena contractor schedules are open and rush premiums disappear. 4. Verify CSLB license, insurance, and bond before paying any deposit. California caps deposits at $1,000 or 10% of contract, whichever is less. ## What is a deck & patio? A deck or patio project builds an outdoor living surface: a raised wood or composite deck, or a ground-level patio of concrete, pavers or stone, often with a cover or pergola. ## How to get an accurate price 1. 1.Write down the scope: size, any layout changes, the finish level, and who supplies fixtures and materials. 2. 2.Get bids from two or three licensed builders who work in Altadena, all pricing that same deck & patio scope. 3. 3.Line the bids up item by item. Check allowances, permits, exclusions, and whether overhead and profit are shown. 4. 4.Before any deposit, check each builder's CSLB license and insurance. As of 2026, California caps a home improvement down payment at $1,000 or 10% of the contract, whichever is less, according to the Contractors State License Board. Already have a bid? [Grade it in two minutes](https://keystoneconnect.us/grade-my-bid) or read [how to compare quotes](https://keystoneconnect.us/pillars/how-to-read-compare-contractor-quotes). ## Questions about Deck & Patio in Altadena ### How much does a deck & patio cost in Altadena, CA? + A deck & patio in Altadena costs $4k–$60k, with a typical mid-size deck or patio running $10k–$27k. Per-unit pricing falls in the $30–$70 per sq ft for deck and $13–$43 per sq ft for patio range. ### Do I need a permit for a deck & patio in Altadena? + Yes for most scopes — LADBS or the local city building department requires permits any time you move plumbing, gas, electrical, or alter structure. Like-for-like cosmetic refreshes generally don't. ### How long does a deck & patio take in Altadena? + Plan for 4–14 weeks of construction in Altadena depending on size and complexity, plus 2–8 weeks for design, permits, and material lead times. ## Official sources - [Look up a contractor's license on the CSLB website](https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx) - [California home improvement contract requirements (Business and Professions Code §7159)](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC§ionNum=7159) Need more answers? Visit our [contractor FAQ hub](https://keystoneconnect.us/faq). ## Get Matched with Licensed Altadena Contractors Tell us about your deck & patio and we'll line up two or three licensed builders who work in the area. Los Angeles County overview [See Deck & Patio costs across all LA County cities →](https://keystoneconnect.us/cost/los-angeles-county/deck-patio) ## Related Altadena Projects [All projects← Back to Altadena](https://keystoneconnect.us/cities/altadena)[AltadenaKitchen Remodel Cost →](https://keystoneconnect.us/cities/altadena/kitchen-remodel)[AltadenaBathroom Remodel Cost →](https://keystoneconnect.us/cities/altadena/bathroom-remodel)[AltadenaADU Construction Cost →](https://keystoneconnect.us/cities/altadena/adu) ## Deck & Patio in Nearby Cities [Burbank, CADeck & Patio Cost in Burbank →](https://keystoneconnect.us/cities/burbank/deck-patio)[Glendale, CADeck & Patio Cost in Glendale →](https://keystoneconnect.us/cities/glendale/deck-patio)[Pasadena, CADeck & Patio Cost in Pasadena →](https://keystoneconnect.us/cities/pasadena/deck-patio)