Deck Remodeling in Concord, CA

Deck renovations in Concord price by square foot and by how much structure needs replacing. Resurfacing over sound framing runs roughly $25 to $40 per square foot. A full rebuild with pressure-treated lumber runs $35 to $50 per square foot, and composite decking runs $50 to $80 per square foot installed. For a typical 300-square-foot deck, expect $10,000 to $15,000 in pressure-treated wood and $16,000 to $25,000 in composite. Targeted repairs such as ledger replacement, railing upgrades, or stair rebuilds usually run $1,500 to $6,000. Elevated decks, hillside footings, and multi-level designs cost more. Your written estimate is free.

Construction takes one to three weeks for most decks. A resurface finishes in three to five days. A full rebuild with new footings takes two to three weeks, partly because concrete needs curing time before framing goes on top. Add two to six weeks beforehand for permitting and material ordering, since composite decking and railing systems in specific colors often carry lead times. You receive a written schedule before demolition.

Yes. We respond to decks that have separated from the house, collapsed or collapsing stairs, broken railings, and storm damage. Call (925) 465-6462 any day between 6 AM and 11 PM. We make the structure safe first, which sometimes means shoring it or closing it off, then document the condition for your insurance carrier and quote the permanent repair. Do not keep using a deck that moves, sags, or shows separation at the house.

Look for these signs. The deck moves or sways when people walk on it. Railings wobble under hand pressure. There is a visible gap where the deck meets the house. Rust streaks run down from bolts and hardware. A screwdriver pushes easily into the joist ends, the post bases, or the ledger area. Stairs feel spongy. Any one of these warrants an inspection, and the gap at the house warrants stopping use immediately.

Composite costs more upfront and almost nothing afterward. No sanding, no staining, no splinters, and warranties that often run 25 years or more. Wood costs less to install and needs cleaning and sealing every one to three years to survive our summers. Homeowners planning to stay ten years or more usually come out ahead with composite. Homeowners on a tighter budget, or those who genuinely like the look of natural redwood, choose wood. Either way, the framing underneath should be pressure-treated lumber.

Sometimes, and we always check. If the footings are sound, the framing is dry and solid, the ledger is attached correctly, and the joist spacing suits your chosen decking, resurfacing saves you thousands. If the structure has rot, undersized framing, or a bad ledger connection, new boards over it just hide the problem. We inspect before quoting so you get the honest answer rather than the profitable one.

Generally yes for structural work. Decks more than 30 inches above grade, decks attached to the house, and any project that changes the framing or footings require a permit in Concord. Replacing deck boards on existing sound framing often does not. Requirements vary between jurisdictions in Contra Costa County, and we confirm yours before we start. We file the paperwork and attend the inspections as part of the contract.