Wood Rot & Dry Rot Repair Larkspur, CA 94939

Carpentry in Larkspur, CA (94939) · Local Professionals

San Francisco Carpentry · Fast response in Larkspur and the San Francisco area · Free estimate 24h

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Larkspur's Victorian and Edwardian cottages, canyon homes, and mid-century neighborhoods sit on steep terrain where old wood-frame structures have settled into their final resting places over a century. The marine fog and salt air that define life here also keep exterior wood damp year-round, making wood rot, dry rot, and structural decay persistent realities for homeowners in 94939.

When a floor starts to bounce, a door frame goes out of square, or you find soft wood in a sill plate or deck beam, the contractors you call need to understand not just carpentry but the specific pathologies of Larkspur's building stock. San Francisco Carpentry has been serving Larkspur and the surrounding area since 2016, and our team knows these older homes inside out. We repair what can be repaired honestly, replace what must be replaced, and explain what we find without drama.

Carpentry for Larkspur's Historic and Mid-Century Homes

Larkspur's housing stock tells the story of the North Bay: original 1900s cottages with hand-hewn Douglas fir framing and redwood siding, 1920s-40s stucco-over-wood rows that hide framing problems behind plaster, and post-war Doelger-era tracts with dimensional lumber and simpler detailing. Many of these homes sit on steep canyon slopes or tight lots where access is tight and every board counts. The marine climate here is relentless on exterior wood, especially fascia, soffit, sill plates, and deck framing that face north or catch fog-driven moisture.

Our team handles the full range of residential carpentry work: wood rot and dry rot repair in siding and structural members, floor joist and subfloor replacement, beam work, load-bearing wall alterations, Victorian-era millwork and trim restoration, door installation and repair, stair and railing work, and finish carpentry throughout. We've been doing this work in Larkspur and the San Francisco area since 2016, and we know what to look for and how to price it fairly.

Our services in Larkspur

Wood Rot & Dry Rot Repair in Larkspur · San Francisco's fog belt makes dry rot a fact of life for wood-frame homes. We c…
Termite Damage Repair in Larkspur · After the exterminator leaves, the damaged wood stays. We replace termite-eaten …
Floor Joist & Subfloor Repair in Larkspur · Sagging, bouncy or soft floors in older San Francisco homes usually trace to dam…
Beam Replacement & Load-Bearing Wall Removal in Larkspur · Open-concept conversions and failing beams call for real structural carpentry. W…
Framing & Structural Carpentry in Larkspur · Remodel framing done right: new interior walls, garage and basement build-outs, …
Finish & Trim Carpentry in Larkspur · The details that separate a real finish carpenter from a handyman: tight miters,…
Crown Molding & Baseboard Installation in Larkspur · Crown molding, baseboards, chair rail and window trim installed with the coped j…
Custom Built-Ins & Shelving in Larkspur · Built-in bookshelves, window seats, media walls, closet systems and Murphy beds …
Interior Door Installation & Repair in Larkspur · Doors that stick, swing open on their own, or never latched right, a San Francis…
Exterior & Entry Door Installation in Larkspur · Entry, back and French doors installed weather-tight against fog and wind-driven…
Cabinet & Vanity Installation in Larkspur · Precise installation of kitchen cabinets, bathroom vanities and laundry storage,…
Stair & Railing Repair in Larkspur · Squeaky treads, loose banisters, worn stringers: we repair and rebuild the stair…
Deck & Porch Repair in Larkspur · Fog and salt air are hard on decks and porches. We replace rotted boards, posts …
Fascia, Soffit & Exterior Trim Repair in Larkspur · Peeling paint and soft fascia boards are the first sign of rot moving in. We rep…

How a Carpentry Job Works in Larkspur

You call us at (628) 285-5429 or reach out online and describe what you've noticed: a soft spot in the deck, a sticking door that won't close square, a floor that's noticeably out of level, or wood that's started to darken and crumble. We schedule a free on-site assessment at your home in Larkspur. During that visit, our carpenter will look at the affected area, trace the damage back to its source (usually moisture), explain what's happening and why, and give you a realistic sense of the repair scope and cost.

Once you approve, we show up with the right tools and materials for the job. If it's structural work like floor joist repair or beam replacement, we confirm whether the Larkspur building department requires a permit (most structural alterations do, and requirements vary). We work methodically, often sistering new lumber to existing framing, scribing trim to fit irregular openings, or carefully restoring period details in older homes. On tight canyon-side lots, we manage access thoughtfully and coordinate with neighbors if needed. We keep the work site organized and haul away our debris.

When the work is done, we walk through with you, explain what we've done and why, and answer any questions about maintenance or what to watch for going forward. You get a straightforward invoice and the confidence that the repair was done right.

Carpentry pricing in Larkspur depends on what's being repaired, how extensive the damage is, and whether structural work requires engineering or permits. A simple wood rot repair in exterior trim might start around $650. Floor joist and subfloor work typically runs from $1,800 and up, depending on how much framing is affected and whether the subfloor can be patched or needs full replacement. Beam replacement or a load-bearing wall alteration starts around $3,500 and often requires a licensed structural engineer and a permit from the Larkspur building department. Finish work like door installation, crown molding, baseboard, or custom built-ins ranges from $350 to $1,900 depending on complexity and materials. The best way to know what a job will cost is to call us for a free on-site estimate. We'll look at the work, ask the right questions, and give you a clear price. Call (628) 285-5429.

✅ EPA Lead-Safe Certified Firm, fully insured for work in Larkspur and nearby areas.

I have a 1920s cottage in downtown Larkspur with original redwood siding, and I found dark, soft wood near the base of the wall. Is this dry rot?

Probably. Dry rot (actually a fungus, not rot from dryness) thrives in the damp marine climate here and loves old redwood siding, especially where it's close to grade or where water splashes up from the ground. The wood darkens, becomes crumbly, and loses strength. The first step is to stop the moisture source: check gutters, grading, and whether water is pooling against the wall. Then we remove the affected wood and sister in new framing or patch the siding, depending on how deep it goes. It's not an emergency, but it does need attention soon. Call us for an on-site look.

My floor in a canyon-side home feels bouncy and is slightly out of level. Should I be worried?

Settlement is normal in Larkspur's older homes, and a gentle slope or slight bounce doesn't mean the house is failing. But if the bounce is new or getting worse, or if you see cracks in plaster or doors that are suddenly hard to close, it's worth having us inspect the floor framing underneath. We'll check the floor joists, subfloor, and sill plates for rot, insect damage, or structural issues. Many times the fix is straightforward: sister a new joist alongside the weak one, patch the subfloor, and the floor firms up. We'll tell you what we find and what it costs to address.

What does wood rot repair typically cost in Larkspur?

Wood rot repair in siding, fascia, or trim can start around $650 for a small localized area. Structural rot in a sill plate, rim joist, or floor joist is more involved and typically runs $1,200 to $1,800 or more, depending on how much wood is affected and whether we can repair in place or need to replace. The only way to know for your specific job is a free on-site estimate. Call us at (628) 285-5429.

Do I need a permit from the Larkspur building department to repair my deck or replace a floor joist?

Permit rules vary, and the Larkspur building department is the final authority. Generally, structural work like replacing floor joists, beams, or load-bearing walls requires a permit. Deck repair or replacement often does too, especially if you're altering the structure or span. Non-structural finish work like trim, doors, or shelving usually does not. We coordinate with the building department on your behalf and can explain what's required for your specific project. Call the city directly if you want to verify before we visit, or we can clarify during our on-site assessment.

My HOA says I can't remove a tree without approval. Can you help with that process in Larkspur?

We work with HOAs regularly and understand that many Larkspur neighborhoods have design review or tree preservation rules. We can help you document the issue (rot, damage, safety concern) with photos and a clear description, and we can provide a written scope of work for your HOA submission. The HOA decision is theirs, but we'll give you the information you need to make your case. Once you have approval, we're ready to schedule.

Is San Francisco Carpentry fully insured for work at my Larkspur home?

Yes. We are fully insured with general liability and workers' compensation coverage. We're also an EPA Lead-Safe Certified firm, which matters if your Larkspur home was built before 1978 and has original paint or finishes. That certification means our crew follows strict protocols to contain and safely manage lead-based materials during repair work. You can work with confidence that we're protected and trained for the specific hazards of older homes.

Winter rains are coming. Should I have my deck or porch inspected before the wet season?

Yes. Fall is the smart time to have us look at deck framing, porch stairs, fascia, and soffit before the heavy rains arrive. The marine fog keeps wood damp here most of the year, but winter rains will expose any existing leaks or soft spots fast. We can spot rot early, tighten loose connections, and make repairs before water damage gets worse. A small repair now beats a big one in January. Call (628) 285-5429 to schedule an inspection.