Deck Repair in San Diego

Almost every deck repair quote you will get is about the surface. Almost every deck failure is about the frame underneath it. That gap is the whole subject.

The ledger board is where decks actually fail

The ledger is the board bolting your deck to the house. When decks collapse, it is usually the ledger connection that let go, and it almost never announces itself first.

Water is the mechanism. If the ledger was installed without proper flashing, rain and irrigation spray run down the wall, get behind the board, and sit against the rim joist of the house. The rim joist rots. The bolts stay perfectly sound in wood that no longer holds anything. From the deck surface everything looks fine right up until it isn’t.

Go stand under your deck with a flathead screwdriver. Push the tip into the joists near the house, into the posts at grade, and into the ledger itself if you can reach it. Sound wood resists. If the screwdriver sinks in a quarter inch under thumb pressure, you have found rot, and the repair is not a board swap. Dark staining on the stucco or siding directly below the ledger line is the other tell.

A contractor who quotes you new decking without ever going underneath has quoted you a cosmetic job on a structural problem. Ask what they found down there. If the answer is vague, that is the answer.

California now inspects some of these by law

After a balcony collapse in Berkeley killed six people in 2015, the state stopped treating elevated wood structures as a private matter. Two laws came out of it, and which one applies to you depends on what you own.

SB 721 covers apartment buildings of three or more units. It requires inspection of exterior elevated elements, meaning balconies, decks, stairways and walkways more than six feet above ground that are supported substantially by wood, with the first round due by January 1, 2025 and repeat inspections every six years. SB 326 does the same job for condominium associations on a nine-year cycle, tied to the HOA reserve study.

Single-family homes are exempt from both. Worth knowing anyway, for two reasons. If you own a rental duplex that later becomes a triplex, you are in scope. And the inspection standard those laws created is a reasonable bar for your own deck regardless: the inspector is required to look at the load-bearing components and the waterproofing, not the railing height and the finish.

San Diego rain is not the reason your deck rotted

The county sees roughly ten inches of rain a year, which convinces a lot of homeowners that rot is somebody else’s problem. It isn’t, and the sources here are unusual enough to be worth naming.

Irrigation does more damage to San Diego decks than weather does. A spray head that clips a post base four times a week for fifteen years delivers far more water than the sky ever will, on a schedule, into the one place that never dries. Planters set directly on decking do the same thing in slow motion. So do outdoor rugs, which trap moisture against the boards and hide what is happening underneath.

Then there is the marine layer. In Ocean Beach, Point Loma, Bird Rock and the low streets of Pacific Beach, a shaded north-facing deck can stay damp most mornings from May through August without a drop of rain falling. Wood that never fully dries is wood that rots slowly and continuously. Ten minutes inland in Normal Heights the same deck bakes dry by nine in the morning and lasts noticeably longer.

Canyon lots are their own category

San Diego is cut through with finger canyons, and a great many houses in Mission Hills, Del Cerro, Talmadge and the older parts of La Jolla have a deck hanging off the back on posts, twelve or twenty feet above a slope.

Three things change on those decks. The post bases matter enormously, because a post sitting directly on soil or on a footing without a standoff bracket wicks moisture up into end grain that nobody can see. Lateral bracing matters, since a tall deck wants to sway and the diagonal bracing is often the first thing a previous owner removed to improve the view. And the repair itself gets expensive out of proportion to its size, because getting a crew and material safely under a deck on a thirty-degree slope is most of the labor.

Permitting also kicks in earlier than people expect. Decks more than thirty inches above grade generally need a permit from San Diego Development Services, and structural work on an elevated deck usually needs one regardless of what the surface job looks like. If your property sits in the Coastal Overlay Zone, which covers a wide band through La Jolla, Pacific Beach and Ocean Beach, there may be a coastal development permit on top of that. Neither is a reason to skip the work. Both are reasons to ask early, because the timeline is what surprises people, not the fee.

Termites eat decks here, and it is not the ones you’re thinking of

Coastal Southern California has a serious drywood termite population. Unlike subterranean termites, drywoods need no ground contact and no moisture source, which means they will happily colonize a deck rail, a fascia board or a joist that is otherwise bone dry and in perfect condition.

What you look for is small piles of what appear to be coarse sand or coffee grounds on the ground beneath the deck, usually against a post or below a joist. Those are fecal pellets, and they are the single most reliable sign. Tiny round holes about the width of a pencil lead are the other.

This matters for repair sequencing. Replacing an eaten joist while an active colony sits in the beam next to it buys you a few years at most. If you find pellets, get the inspection first and the carpentry second.

What repairs run

San Diego handymen and carpenters bill roughly $80 to $130 an hour against a two-hour minimum, and that floor drives the small end of this table. Materials have moved a lot in recent years, so treat these as the shape of the thing rather than a quote.

Job	Typical range	What drives it
Replace a few soft boards	$250 – $700	Mostly the minimum. Matching aged redwood or cedar is the hard part.
Railing repair or replacement	$700 – $2,500	Code requires 42 inches on residential decks over 30 inches high, so an old 36-inch rail often cannot simply be patched.
Sand and refinish	$3 – $6 per sq ft	Condition of the existing finish. Stripping a failed film-forming stain costs more than recoating a penetrating one.
Joist and beam repair	$1,500 – $6,000	Access. The same rot is twice the price on a canyon deck.
Ledger reflash and rebuild	$2,000 – $6,000+	Stucco and siding have to come off, and whatever the rim joist looks like behind it is not knowable until then.
Full rebuild, frame and surface	$40 – $90 per sq ft	Material choice and height. This is where composite becomes worth discussing.

On licensing: structural deck framing sits under a C-5 framing and rough carpentry classification, though a general B contractor can carry it inside a larger job. Business and Professions Code section 7048 exempts work under $1,000 in combined labor and material from the license requirement, raised from $500 by AB 2622 in January 2025, but only where no permit is required. A permitted deck job never qualifies. And California caps the deposit on a home improvement contract at 10 percent of the price or $1,000, whichever is less.

Two things we would talk you out of

The first is composite decking over an old frame. Composite boards are genuinely good and they last, which is exactly the problem: you have just installed a twenty-five-year surface on a substructure that has eight years left. Worse, most composite requires joists at sixteen inches on center or tighter, and older redwood decks here were frequently framed at twenty-four. If the frame is sound and correctly spaced, composite is a fine decision. If it isn’t, you are paying premium prices to postpone the real job and making that job more expensive when it arrives.

The second is dark composite anywhere inland. In El Cajon, Santee or Poway a dark composite deck in August is genuinely too hot to stand on barefoot, considerably hotter than wood in the same sun. On a shaded coastal deck in La Jolla it is a non-issue. Same product, same county, two completely different outcomes, and the showroom sample will not tell you which one you are buying.

Questions that come up

Can I just power wash and re-stain it myself? Often yes, and it is one of the better weekends of DIY value available. Use the widest fan tip and keep the pressure low, because a narrow tip at high pressure will shred the soft grain and leave permanent furrows you then have to sand out. The mistake is not the staining. It is the washing.

How long should a deck last in San Diego? Pressure-treated framing kept dry will go thirty years. The surface boards wear out long before the frame does, which is why partial repair usually beats replacement. A redwood or cedar surface gets fifteen to twenty-five years depending almost entirely on sun exposure and whether anyone ever sealed it.

Is it worth repairing, or should I rebuild? Rough rule: if the frame is sound and only the surface has gone, repair, every time. If the ledger or more than a few joists are rotten, the labor to work around a failing frame starts approaching the cost of doing it properly, and you end up with a deck that is half new and entirely unwarrantable. Get both numbers before deciding. Any contractor unwilling to quote the repair version is telling you what they would prefer to sell.

My deck is bouncy. Is that dangerous? Usually not by itself, and it is a comfort issue as often as a safety one. It does mean the joists are undersized or overspanned for the load. Combine bounce with any rot at the ledger, though, and it stops being a comfort issue.

Worth bundling

The two-hour minimum makes a single small repair poor value, and deck work tends to sit next to other exterior jobs. Gutters that dump onto a deck corner are a common root cause worth solving in the same visit, so gutter cleaning often belongs on the same list. Other San Diego small jobs include door installation, which frequently covers the slider out to the deck, plus drywall repair, TV mounting and ceiling fan installation. The full list sits on the San Diego handyman page. If the ledger turns out to be wet because of what is above it, San Diego has vetted roofing partners as well, and you can browse all handyman services or browse all services by city.