Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Before
After
Before
After
Before
AfterChimney Company in Mill Valley, CA
Mill Valley isn’t an easy place to keep a chimney safe. The canyon neighborhoods sit under dense redwood and bay laurel canopy that drops needles, bark, and leaves into flue openings year-round, and much of the residential area is classified by CAL FIRE as a Very High Fire Hazard Severity Zone. We’re Alcott Chimney Sweep, and we handle sweeping, inspection, and gas fireplace repair for Mill Valley homes built from the 1910s through today, many of which still have their original unreinforced brick chimneys. Call (336) 863-3889 for a straight answer and a written price before any work begins.
Why Mill Valley Homes Are Different
Mill Valley gets more rainfall than almost anywhere else in the Bay Area. Storms rolling off Mt. Tamalpais wring out moisture over Cascade Canyon, Blithedale Canyon, and Old Mill before they ever reach San Rafael or Novato. That persistent dampness seeps into mortar joints, accelerates spalling, and promotes mold inside flues that sit unused from spring through early fall. Then the dry season arrives, and those same chimneys get asked to contain embers above a redwood canopy that’ll ignite fast.
The housing stock compounds the problem. Most canyon homes are craftsman cottages and hillside builds from the 1910s through 1950s, and a lot of them still run on original brick masonry stacks with no stainless liner and no modern clay tile. Marin County code and CAL FIRE both require UL-listed spark arrestors in Very High Fire Hazard Severity Zones, but we routinely find 1930s chimneys with either no arrestor at all or a corroded screen that disintegrates when touched. Some insurers in high-fire-risk ZIP codes are now flagging exactly that condition when underwriting or renewing policies.
Our Main Mill Valley Services
The two calls we get most from Mill Valley homeowners are routine sweep bookings and inspections tied to real estate transactions or insurance requirements, plus gas fireplace service when burners won’t light in fall. Each service has its own Mill Valley page with pricing and local detail.
Chimney Sweep in Mill Valley
A sweep in Mill Valley typically means more than ash removal. Redwood bark and bay leaves pack into flue openings fast here, and creosote, the tar-like buildup that causes chimney fires, forms faster in damp, cool flues than in dry ones. We remove the debris, break down glazed creosote, and check the spark arrestor while we’re up there. In the canyon neighborhoods, we’re often the first company to touch a chimney in years, which means the sweep doubles as a first-line safety check. See our full breakdown on the Chimney Sweep in Mill Valley page.
Chimney Inspection in Mill Valley
Older Mill Valley chimneys hide problems well: cracked flue tiles, failed mortar, missing arrestors, and water intrusion that’s been quietly degrading the stack for decades. A camera inspection shows you exactly what’s happening inside, and we walk you through the footage so you can see it for yourself. Whether you’re buying on a canyon street in Old Mill or your insurer wants documentation after a policy review, inspection findings here carry real weight. Full pricing and what each inspection level covers is on the Chimney Inspection in Mill Valley page.
Gas Fireplace Repair in Mill Valley
Gas fireplaces in Mill Valley see heavy use from November through March, and the combination of damp air and coastal salt can corrode burner tubes and pilot assemblies faster than you’d expect. We service and repair most major gas fireplace brands, replace thermocouples and thermopiles, and diagnose ignition failures. If your fireplace won’t light, makes a delayed ignition pop, or smells like gas when off, don’t wait. Details on what we fix and typical repair pricing are on the Gas Fireplace Repair in Mill Valley page.
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.
Brands We Service in Mill Valley
We install and service professional-grade materials from DuraFlex, HeatShield, Famco, and Copperfield, the same brands chimney professionals specify rather than box-store substitutes. Common liner and cap parts are stocked in our Bay Area shop, which keeps most Mill Valley repairs from turning into multi-week waits. See our brands for full coverage details.
Pricing for Chimney Company in Mill Valley, CA
| Service | Typical range in Mill Valley |
|---|---|
| Standard chimney sweep (single flue, no repairs) | $180 – $340 |
| Chimney sweep with glazed creosote removal | $400 – $700 |
| Level 1 chimney inspection | $150 – $250 |
| Level 2 chimney inspection (camera scope included) | $350 – $600 |
| Spark arrestor replacement | $95 – $225 |
| Chimney cap installation | $195 – $450 |
| Chimney crown repair | $250 – $700 |
| Gas fireplace service call and inspection | $125 – $225 |
| Gas log set repair (individual component) | $150 – $400 |
| Stainless steel liner installation | $1,800 – $4,500 |
Hill access, steep roof pitches, and scaffolding requirements on stacked canyon homes can push Mill Valley jobs toward the upper end of these ranges. Whatever the number, you get a written price before we start, and there’s no surprise line item at the end.
Neighborhoods We Serve in Mill Valley
We work throughout Mill Valley, from the canyon streets to the flatter in-town grid. Most Mill Valley homes are reachable within one to two business days, and we schedule around the weather because roof work in wet conditions isn’t worth the risk.
- Cascade Canyon
- Blithedale Canyon
- Old Mill
- Homestead Valley
- Sycamore Park
Service Area – Cities Near Mill Valley
We also serve homeowners across nearby Marin County communities, including Corte Madera, CA, Larkspur, CA, Sausalito, CA, and Kentfield, CA. Each area has its own housing stock and conditions, and each gets the same written-price commitment.
Serving Mill Valley, CA - Our Local Coverage Area
We’re based in the Mill Valley 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 Chimney Company in Mill Valley
Most Mill Valley appointments are scheduled within one to two business days, depending on roof access and weather. We don’t work on steep wet roofs, so during heavy storm cycles we may shift a sweep a day or two until conditions are safe. Call (336) 863-3889 and we’ll give you a real date, not a window.
A routine sweep or inspection doesn’t require a permit. Structural repairs like a full rebuild or liner replacement may, depending on scope and Marin County requirements. We’ll tell you plainly if your job triggers permitting, and we handle the paperwork details before work starts.
Many Mill Valley canyon homes fall under small HOAs or shared access easements, especially on steep shared driveways. We’re used to working with those constraints and can provide documentation or coordinate access requirements when an HOA needs notice. Tell us about any access rules when you call.
If you need a chimney sweep, inspection, or gas fireplace repair in Mill Valley, call (336) 863-3889 for a free estimate. A live person answers every call, and you’ll get a written price before any work starts.
What happens when you call
- 1A real person answersNo phone trees - talk to a local chimney cleaning 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 Mill Valley Customers Say
"Good chimney cleaning. They found a small gap in the mortar and quoted the repair, which was a bit more than I wanted to spend. Did the sweep and left the repair for later without any pressure."
- Stuart L."Left no soot anywhere. Even brought a vacuum with a sealed filter. I'd use them again every fall."
- Beth H."Gas fireplace pilot kept going out. Cleaned the burner, replaced the thermocouple, and explained what failed. Works first try now."
- Alicia R.