Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Construction Services in San Anselmo, CA
San Anselmo sits in a narrow inland valley where Ross Valley creeks meet Craftsman-era homes, and that combination shapes every construction decision here. If you’re planning a remodel, a roof replacement, or an addition, you need a contractor who understands flood-zone compliance on Sir Francis Drake Boulevard as well as fire-hardening requirements up in the hills. Barrett & Sons Construction serves all of San Anselmo, including 94960 and 94979. Call us at (877) 610-1318 and a live person answers, day or night.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Why San Anselmo Homeowners Choose Barrett & Sons Construction
Most of our San Anselmo customers come to us after a national outfit quoted one number on the phone and delivered a different bill at the door. Tom Barrett started this company in 1998, and his sons run the crews. When you hire us, the name on the truck is the name that shows up at your house. We serve neighborhoods across town, from the flats near Wade Thomas Elementary to the hillside streets above Brookside School, and we know which parcels sit in FEMA AE flood zones before we ever walk the property.
Our reputation in San Anselmo is built on written change orders, permits pulled on every eligible job, and a 90-Day Done Right Promise that’s printed on every contract. If something isn’t right, Tom comes back and makes it right, one call. We’re owner-operated, not a franchise dispatching strangers from out of county. Scheduling and dispatch are coordinated from our San Francisco Bay Area office, but the crews working on your San Anselmo home live and work locally.
Construction Services We Offer in San Anselmo
Here’s what we do in San Anselmo, trade by trade.
Kitchen Remodeling
We remodel kitchens in San Anselmo’s Craftsman bungalows and early Ranch homes, where original framing often hides knob-and-tube wiring and galvanized supply lines that need addressing before new cabinets go in. We carry KraftMaid and Cambria, brands you can look up yourself, and every allowance arrives on paper before it’s spent.
Learn more about our Kitchen Remodeling in San Anselmo.

Bathroom Remodeling
Bathrooms in San Anselmo’s older homes frequently sit on rotten subflooring and outdated clay-tile drainage, which means a simple vanity swap can become a structural repair once walls open. We use Schluter waterproofing systems and Grohe fixtures, and we scope every change in writing before work begins.
Learn more about our Bathroom Remodeling in San Anselmo.

Roofing
Roofs in San Anselmo’s upper hillside neighborhoods must meet CAL FIRE’s WUI requirements for Class-A roofing and ember-resistant vents, while valley-floor homes carry the weight of winter storm runoff season after season. We install GAF roofing systems and pull permits on every eligible job, with inspections signed before we call it done.
Learn more about our Roofing in San Anselmo.

Windows & Doors
Original single-pane windows in 1920s cottages dump heat all winter and let the summer sun bake the front rooms. We install name-brand windows, sized and flashed for San Anselmo’s damp winters, and we handle any stucco or trim repair the opening requires.
Learn more about our home services.

Fence Installation
Fences along San Anselmo Creek and in rear-yard drainage easements need footings that hold up to saturated soil, not just a standard post hole. We account for the water table and the grade before we dig, and the permit comes before the post hole.
Learn more about our fence work in San Anselmo.

Driveway & Pavers
Hillside driveways in San Anselmo require drainage planning so winter runoff doesn’t wash your base material onto Sir Francis Drake Boulevard. We install paver and permeable surfaces designed for the slope, the soil, and the storm season.
Learn more about our driveway and paver work in San Anselmo.

Home Additions & ADU
Adding square footage in San Anselmo means navigating Marin County building codes, Town of San Anselmo flood ordinances, and in many cases a lot that slopes more than you think. We handle the engineering, the permits, and the inspections, and we write every change order before the scope changes.
Learn more about our home addition and ADU work in San Anselmo.

Neighborhoods We Serve in San Anselmo
We work throughout San Anselmo, from the creek-adjacent flats to the fire-zone hillsides. Typical response time for estimates in town is within one to two business days, and our crews are already familiar with the local terrain, the permit counter, and the inspectors.
- Sleepy Hollow
- Barber Tract
- Wade Thomas area
- Brookside
- Lansdale
Why San Anselmo’s Climate & Housing Affect Construction
San Anselmo Creek bisects the town and places a substantial share of residential and commercial properties, including much of the Sir Francis Drake Boulevard corridor, within FEMA-designated Special Flood Hazard Areas. That’s rare at this density in neighboring towns, and it means every permitted project in those zones must satisfy the Town of San Anselmo’s Flood Damage Prevention Ordinance on top of standard Marin County building requirements. Flood-proofing compliance, finished-floor elevation certificates, and flood-vent requirements are routine parts of the local construction conversation here, not edge cases.
Meanwhile, the upper hillside neighborhoods fall under CAL FIRE’s High or Very High Fire Hazard Severity Zone maps. That means ember-resistant vents, Class-A roofing, and ignition-resistant exterior assemblies add scope and cost to any exterior construction or re-roofing job. Two different regulatory worlds exist inside the same town, and you need a contractor who knows which one applies to your parcel before the first nail moves.
Pricing for Construction in San Anselmo
Construction pricing in San Anselmo runs higher than the national average, driven by Marin County permit fees, flood-zone engineering requirements in the valley, and WUI compliance costs in the hills. Every job gets a written line-item estimate, and every change gets a written change order before work proceeds. That’s how we protect you from the surprise invoice at the end.
- Permit fees: Vary by project scope; Town of San Anselmo flood-zone review adds cost on creek-adjacent parcels.
- Engineering: Hillside lots with aging retaining walls frequently require geotechnical review before permits issue.
- Materials: We install brands you can verify GAF, Sterling, Grohe and we price allowances in writing.
- Change orders: Always written, always signed before work proceeds. An allowance that isn’t on paper is a surprise waiting for a date.
Service Area - Cities Near San Anselmo
While this page focuses on San Anselmo, our crews also serve homeowners in nearby Fairfax, Kentfield, San Rafael, and Larkspur. If you’re in one of those towns, the same crew, same written change orders, and same 90-Day Done Right Promise apply.
Serving San Anselmo, CA - Our Local Coverage Area
We’re based in the San Anselmo area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Construction in San Anselmo
Yes. If your property falls within a FEMA-designated Special Flood Hazard Area, which covers much of the Sir Francis Drake Boulevard corridor and creek-adjacent residential streets, every permitted construction project must comply with the Town of San Anselmo’s Flood Damage Prevention Ordinance. That typically means flood-proofing compliance, elevation certificates, and flood vents. Call (877) 610-1318 and we’ll check your parcel before you spend a dollar on plans.
The NFIP “substantial improvement” threshold applies when renovations exceed 50% of a structure’s pre-improvement market value on a flood-zone parcel. Triggering it mid-project forces the entire building into current flood-proofing compliance, which has stopped more than one San Anselmo renovation cold when the math wasn’t run before demolition began. We run that math before you sign anything. Call (877) 610-1318 for a scope review.
If your home sits in the upper hillside neighborhoods classified as High or Very High Fire Hazard Severity Zones under CAL FIRE’s WUI maps, yes. Those zones require Class-A roofing, ember-resistant vents, and ignition-resistant exterior assemblies. Valley-floor homes don’t carry the same requirements. We’ll pull your parcel’s designation and scope the roof correctly the first time.
Not with us. Every scope, every allowance, and every price change arrives as a written change order before work happens. Tom Barrett puts his name on every contract, and the 90-Day Done Right Promise means if it isn’t right, he comes back. Call (877) 610-1318 for an exact quote. Estimates are free.
Yes, on every eligible job. The permit inspector works for you, not for us, and we like it that way. Marin County and the Town of San Anselmo both review our work, and every inspection gets signed before we call the job done. Ask anyone on your street, or look up Tom Barrett’s license number yourself.
Ready to Talk About Your San Anselmo Project?
Call Barrett & Sons Construction at (877) 610-1318 for a free estimate on any construction project in San Anselmo. A live person answers, 24/7. We’ll walk your property, check your flood-zone and fire-zone status, and hand you a written line-item estimate before you commit to anything. Tom Barrett’s name, address, and license number are published and verifiable. Look us up before you sign anything.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving San Anselmo and Marin County with owner-operated crews since 1998.
What happens when you call
- 1A real person answersNo phone trees - talk to a local construction pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Anselmo Customers Say
"The bathroom was finished on the day he said at the start, which nobody had led me to believe was possible."
- Loretta Vanterpool"His sons run the crews and they were in our house for four months. Not once did I feel I had to be home to keep an eye on things."
- Camila Fuentes"Beautiful work and honest pricing throughout. The project ran about three weeks past the estimate waiting on the cabinets, which was the supplier rather than him, though the delay was still real."
- Genevieve Ashcombe







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