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Deck Cost Calculators for La Jolla
Six calculators, each built for one kind of deck project in La Jolla. Enter your dimensions, material and site conditions and you get a realistic range, a line-by-line breakdown, and a straight answer on permits.
Choose your calculator
Any material, any height — the full picture.
Open the calculatorComposite Deck Cost CalculatorTrex, TimberTech and AZEK tiers priced side by side.
Open the calculatorWood Deck Cost CalculatorPressure-treated, cedar, redwood and ipe, plus upkeep.
Open the calculatorDeck Railing Cost CalculatorWood, composite, aluminium, cable and glass per foot.
Open the calculatorDeck Repair Cost CalculatorRepair, resurface or rebuild — all three priced.
Open the calculatorDeck Replacement Cost CalculatorDemolition through to new boards, including the frame question.
Open the calculatorThe two things most people get wrong
30 inches is the line that changes everything
A deck 30 inches or less above grade generally needs no building permit and no guard at all. Cross that line and you need a permit, a full plan review, a 42-inch guard and proper framing — and the cost per square foot jumps. If your design is close to the line, it is worth knowing exactly which side of it you are on before you draw anything.
The boards are the cheap part
People choose a deck by the decking, but the boards are only about a third of the cost. The frame underneath, the footings, the railing around the edge and the stairs off it are the rest. It is why reusing a sound frame saves so much on a replacement — and why putting a 50-year board on a frame with five years left is the most expensive mistake in decking.
How to use these numbers
Typical ranges in La Jolla
| Calculator | Typical range |
|---|---|
| Deck Cost Calculator | $8,000 – $60,000+ |
| Composite Deck Cost Calculator | $9,000 – $60,000+ |
| Wood Deck Cost Calculator | $6,000 – $55,000+ |
| Deck Railing Cost Calculator | $35 – $200 / ft |
| Deck Repair Cost Calculator | $300 – $10,000+ |
| Deck Replacement Cost Calculator | $8,000 – $70,000+ |
Ranges span the realistic low and high ends across all sizes, materials and site conditions. Your project sits at a specific point inside its range — the calculators tell you where.
Permits, code and the coastal zone
The 30-inch rule
Decks not more than 30 inches above grade, and not over a basement or storey below, generally do not require a building permit in San Diego. Above that you need a permit, and deck permits typically trigger a full plan review rather than an over-the-counter approval.
42-inch guards
Where a guard is required, California sets the height at 42 inches — higher than the 36 inches used in much of the country. It has to resist a 200-pound load in any direction at the top rail, which is why post spacing and blocking matter more than the infill you choose.
Footings and hillsides
Footings have to bear on undisturbed soil, and the County standard keeps a minimum 7-foot horizontal distance from the bottom of the footing to daylight. On a canyon or hillside lot that means deeper piers, stepped footings and an engineer. Prescriptive deck drawings also cap post height at about 10 feet.
The coastal zone
La Jolla sits inside the California coastal zone. Work that expands a footprint can trigger a Coastal Development Permit; bluff-top lots need geotechnical work covering bluff retreat and sea level rise. Costs range from a few thousand dollars to tens of thousands and timelines run months. Confirm with City of San Diego Development Services early.
What these calculators are — and what they are not
Built on published 2026 figures
The cost ranges published on our own service pages, San Diego deck contractor cost guides, brand and tier pricing for Trex, TimberTech and AZEK, San Diego permit information and the California Residential Code requirements that apply in La Jolla. Coastal San Diego prices sit above national averages and that is built in.
Honest about uncertainty
Every result is a range, and contingency is shown as its own line rather than hidden in the total. Repair and replacement carry the widest ranges here, because nobody knows what is under the old boards until they come off — so those calculators carry a higher contingency than the new-build ones, and say so.
Not a contractor quote
No calculator can see the corrosion on your joist hangers, the flashing behind your ledger, the rot at a post base, or whether a crew can get materials to the back of the house. Those decide real prices. Treat every number here as a planning figure and get a site visit before you commit.
Ready for a real number?
We work with homeowners throughout La Jolla and coastal San Diego. Every project starts with a free, no-pressure site visit so you can understand what your deck actually needs — and what it costs — before committing to anything.
Get my free estimateFrequently asked questions
How accurate are these deck calculators?
They are built from 2026 published cost figures for coastal San Diego — the cost ranges published on this site's own service pages, San Diego deck contractor cost guides, national brand and tier pricing for composite decking, City and County of San Diego permit information, and the California Residential Code requirements that apply here. They are accurate enough to plan and budget around. They are not accurate enough to sign a contract against, because no calculator can see your framing or what is behind your siding.
Why does the same size deck cost so differently?
Because square footage is only one of four big drivers. The board you choose can double the material cost. Height above grade can add 25% to 70% to the framing. Railing on a small deck can be a quarter of the job. And site access — whether a truck can reach the work or every board is carried through a side gate — is charged as labour. Two 300 square foot decks can legitimately be $15,000 apart.
Do I need a permit to build a deck in San Diego?
Generally yes, once the deck is more than 30 inches above grade or sits over a storey below. Under that threshold most residential decks are exempt. Deck permits usually trigger a full plan review, and published San Diego figures run from roughly $400 to $1,800. Confirm with City of San Diego Development Services for your address.
How tall does a deck guard have to be in California?
42 inches, wherever a guard is required — which is any walking surface more than 30 inches above what is below it. That is higher than the 36 inches used in much of the country, and it is a common reason railing kits bought out of state fail inspection here. It also catches people replacing an older deck whose original guard was 36 inches.
Does La Jolla have extra rules because of the coast?
It can. La Jolla sits inside the California coastal zone, so work that expands a building footprint can trigger a Coastal Development Permit on top of the building permit. Like-for-like replacement is often treated differently from new construction. Bluff-top and ocean-front lots get the most scrutiny and need geotechnical work covering bluff retreat and sea level rise, with costs from a few thousand dollars to tens of thousands and timelines in months. Ask the City early — it is the single biggest schedule risk on a coastal deck.
Do I have to give you my details to see a price?
No. Every calculator on this site works without an email address, a phone number or a sign-up. Use them, note the number, and contact us only if you want a real quote.