Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 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.
Trusted Chimney Sweep for San Francisco Homeowners
A chimney sweep in San Francisco typically costs between $189 and $349 for a standard open-hearth fireplace, depending on the flue height, roof pitch, and how much creosote has built up since the last cleaning. Most sweeps take 60 to 90 minutes once our technician arrives. Alcott Chimney San Francisco has served city homeowners since 2002, and every Chimney Sweep - San Francisco visit comes with a written price before the brush ever touches your flue. Call (831) 534-3789 for a free estimate, and you’ll know the technician’s name and see their photo before we arrive.
San Francisco’s fog, older housing stock, and steep rooflines create a specific set of chimney problems. Victorian and Edwardian chimneys in neighborhoods like Noe Valley, Bernal Heights, and the Richmond District often have unlined or deteriorating brick flues that hold creosote differently than modern steel liners. In the Outer Sunset and the avenues, salt air accelerates mortar erosion on chimney crowns. Ruben Castellano and his team sweep chimneys across the city every week, and our Chimney Sweep Maintenance Checklist for San Francisco Homeowners reflects the same issues we see repeat themselves street by street. A clean flue is the difference between a fireplace you use without worry and one that puts your family at risk of a chimney fire or carbon monoxide entering the living room.
You don’t need to prep the house or move furniture. You do need to know who’s coming to your door. Every Alcott technician is background-checked, identity-verified, uniformed, and announced by name and photo before arrival. That’s the Threshold Standard, and we’ve followed it since day one. When we show up in San Francisco, we show you a photo ID badge at the door, every time, no exceptions.
Chimney Sweep Services
Chimney Sweep Services cover the full cleaning of your fireplace flue, smoke chamber, damper, and firebox, which is where creosote, soot, and debris collect during burning season. Most San Francisco homes with a working wood-burning fireplace need this once per year, and the NFPA and CSIA both recommend annual sweeping whenever creosote reaches even 1/8 inch of buildup. Alcott Chimney San Francisco performs this service with rotary brush systems sized to your flue, drop cloths throughout the work area, and a full inspection of every accessible component before we call the job done. A standard sweep in San Francisco runs $189 to $349, and the written quote you receive before we start covers all of it.
Creosote Removal
Creosote, the tar-like byproduct of burning wood, builds up in three stages: flaky, gooey, and hardened glaze. San Francisco’s climate produces a lot of the second stage because our wet winters push homeowners to burn greener or partially seasoned wood. We remove it with professional brushes and, for glaze-stage creosote, chemical treatments designed for the job. Left alone, creosote is the single most common cause of chimney fires in the city.
Smoke Chamber Cleaning
The smoke chamber sits above the damper and below the flue, and it’s where smoke cools and deposits the most stubborn soot. Most sweeps don’t reach it properly without specialized tools. We clean it on every standard sweep because a dirty smoke chamber restricts draft and sends smoke back into your living room. In older San Francisco homes with corbelled brick smoke chambers, this step matters even more; those uneven surfaces hold creosote like a sponge.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Styles & brands we work with
Chimney Cleaning
Chimney Cleaning is the physical removal of flammable creosote and soot from the interior of your chimney flue, and it’s the core of what keeps a wood-burning fireplace safe to use. We recommend scheduling it before your first fire of the season, which in San Francisco means October through early December, not only because fall bookings fill quickly but because burning with a dirty flue is the easiest way to ignite a chimney fire. Alcott Chimney San Francisco includes chimney cleaning as part of every standard sweep, and the price range of $189 to $349 reflects the size and condition of your flue. You will receive a written price before any work begins, so the number doesn’t change once we’re on the roof.
Flue Brushing
Our technicians use poly and wire rotary brushes matched to your flue liner’s shape and diameter. Round, square, and rectangular flues all require different tools, and using the wrong one leaves creosote behind. San Francisco’s older chimneys often have unusual dimensions, which is why we always measure before we brush. The brushing stage takes 30 to 45 minutes on most homes.
Debris and Blockage Removal
Birds, squirrels, and raccoons find San Francisco chimneys attractive, especially in neighborhoods near Golden Gate Park and the Presidio where tree canopy presses against rooflines. Nests, leaves, and even dead animals block draft and force smoke backward into the home. We remove all blockages during a standard sweep and will show you exactly what came out. If an animal is present, we handle the situation legally and humanely, then cap the flue so it doesn’t happen again.
Fireplace Cleaning
Fireplace Cleaning addresses the firebox itself, the area where wood actually burns, plus the grate, ash, and the visible brick or stone surround. This is the part you see, but it’s also the part that accumulates ash and debris after every fire. Alcott Chimney San Francisco cleans the firebox on every sweep we perform, removing ash, vacuuming soot, and inspecting the firebrick for cracks that could expose combustible materials behind your hearth. A fireplace cleaning typically costs $189 to $349 as part of a full sweep, and the written price covers the entire firebox.
Firebox Cleaning
The firebox should be cleaned of ash after every few burns, but the deeper cleaning, removing caked soot and inspecting mortar joints, is a yearly job. In San Francisco’s older homes, we regularly find firebrick that has shifted over decades of use and small gaps developing behind the grate. We’ll flag those issues with photos, not pressure you to repair something you can’t verify. If the firebrick is intact, we leave it that way.
Glass Door and Hearth Cleaning
If your fireplace has glass doors, we clean both sides of the glass and the gasket seal around the frame. Clouded glass isn’t just cosmetic; it usually means cooler burning and more creosote forming in the flue. The hearth and surround get a gentle brushing and vacuum, leaving the work area cleaner than we found it. We lay drop cloths throughout the path from door to fireplace, so your floors in apartments and flats take no damage.
Chimney Services
Chimney Services encompasses the full scope of what Alcott Chimney San Francisco does beyond a basic sweep: chimney inspection, liner evaluation, crown and cap repair, masonry work recommendations, and gas fireplace service. We cover all of these within the same visit, which means you don’t need to call three different companies when your sweep reveals a deeper issue. If your sweep uncovers damage, we document everything with camera images and give you the written recommendation and price on the spot. Chimney services in San Francisco range from the cost of a sweep, $189 to $349, up to more involved liner or masonry work, which we’ll always quote in writing before you commit.
Chimney Inspection and Diagnosis
Every sweep includes a Level 1 visual inspection, which checks the accessible parts of your chimney for damage, blockage, and moisture intrusion. If you’re buying a home in San Francisco, changing fuel type, or suspect hidden damage, we’ll recommend a more thorough Level 2 camera inspection. That camera footage becomes your record, and we will walk you through what we find in plain English. You don’t sign off on anything you haven’t seen with your own eyes.
Liner and Cap Evaluation
The flue liner is the protective channel that contains heat and gases inside your chimney, and if it’s cracked, flaking, or missing in sections, you have a fire risk. In older San Francisco homes, especially those built before 1940, clay tile liners fail over time and need evaluation. We assess liner condition on every visit and explain what’s safe to leave alone. When a liner does need replacing, we install DuraFlex systems, which are specified by chimney professionals for the job.
Chimney Sweep Certified
Chimney Sweep Certified means the person working on your chimney has been trained, tested, and verified against professional standards before ever setting foot in your home. At Alcott Chimney San Francisco, every technician carries certification through the Chimney Safety Institute of America, the industry’s recognized credentialing body for chimney sweeps. That matters because San Francisco’s building stock demands real knowledge of old masonry, unusual flue shapes, and draft behavior in fog-prone air. A certified sweep costs the same as an uncertified one here, $189 to $349 for a standard job, but you’re getting a different level of competence. This is not a sideline for a handyman; it’s the only work our technicians do.
Criminal Background and Identity Verification
We’re blunt about this because it’s the reason so many San Francisco homeowners hesitate to book a chimney service. You’re opening your door to a stranger. Our technicians pass a criminal background check and identity verification before they work their first day, and we confirm that identity again at your door with a photo ID badge. You’ll see the technician’s name and photo before we arrive. That’s the Threshold Standard, and it’s non-negotiable.
Ongoing Training
The technology changes: rotary brush systems, video scanning equipment, new liner materials like HeatShield resurfacing. Our team trains on these tools regularly. Ruben Castellano expects every technician to explain the work they’re doing in plain language, which is harder than it sounds. The result is that you understand your chimney, not just that it’s clean.
Gas Fireplace Cleaning
Gas Fireplace Cleaning covers the servicing of gas log sets, gas inserts, and the venting systems that handle their exhaust. Even though gas fireplaces don’t produce creosote the way wood does, they do collect dust, pet hair, and soot on logs and burners, and they can develop combustion problems that go unnoticed for years. Alcott Chimney San Francisco cleans gas fireplaces throughout San Francisco, particularly in the Marina, Pacific Heights, and newer condo buildings where wood burning is restricted or banned. Annual gas fireplace cleaning costs $149 to $289, and the written price covers full disassembly of the log set, cleaning of the burner and pilot assembly, and reassembly with correct log placement.
Gas Log and Burner Cleaning
Ceramic and refractory gas logs accumulate soot over time, especially if the air-to-fuel mixture drifts out of adjustment. Soot on the logs and burners reduces heat output and creates an odor. We remove the logs, clean each one individually, vacuum the burner ports, and check the pilot assembly for dust that can cause delayed ignition. Californians with gas fireplaces often skip this because the unit looks fine from the outside. It’s not fine on the inside.
Vent and Safety Check
All gas fireplaces, even ventless models, need a clear and functioning exhaust path. We inspect the venting on every gas fireplace cleaning, checking for blockages, corrosion, and improper installation. In San Francisco condos, we frequently find vents that were never connected correctly during a renovation. Carbon monoxide enters living space only when something has failed, and our job is to find that failure before it finds you.
Chimney Maintenance
Chimney Maintenance is the routine care that extends the life of your flue, crown, cap, and masonry, and it’s far less expensive than the repairs it prevents. San Francisco’s combination of fog, rain, and occasional freeze-thaw cycles weathers brick and mortar aggressively, especially on north-facing chimneys that never fully dry. Alcott Chimney San Francisco performs maintenance as part of our standard sweep visit, $189 to $349, and our Daly City Chimney Sweep team follows the same process, always giving you a written list of any follow-up items with our recommendation on priority. Some things can wait a year. Some things should not. We tell you the difference plainly.
Seasonal Maintenance Checklist
Our seasonal maintenance covers the cap, crown, flashing, mortar joints, damper operation, and the firebox floor. A cracked crown lets water through, and in San Francisco, water is the enemy of every masonry structure. We inspect these points on every visit and document what we find with photos. When we complete the job, you receive a written summary of what was done and what, if anything, should be watched.
Preventive Repairs
Small fixes now prevent big ones later. A damper that sticks, a cap with a rusted screen, and a crown with hairline cracks are all examples of maintenance items that cost a few hundred dollars to fix and thousands to ignore. With our 365-Day Done Right Promise, every repair we make is backed by a written guarantee for a full year. If the repair fails within that time, the second visit is free.
Brands We Service
We work with professional trade materials from brands specified by chimney professionals. DuraFlex liner systems are what we install for most liner replacements in San Francisco; they’re made from UL-listed stainless steel, they hold up to decades of wood and gas exhaust, and they can be sized to nearly any existing flue. HeatShield resurfacing is what we use to repair damaged clay tile flues without a full teardown, which matters in the city’s older homes where demolition costs run high.
We also service and install components from Olympia Chimney and Copperfield, both respected manufacturers of caps, dampers, and stainless steel components. Whether you have a DuraFlex liner, an Olympia cap, or any other make installed by a previous contractor, our team knows the product and can service it. We do not use box-store substitutes, period.
See the difference
Before
After
Before
After
Before
AfterSigns You Need a Pro Right Now
- Smoke rolls back into the room when you light a fire. This is a draft reversal, and it usually means a blocked flue or a damper that isn’t opening fully. Burning with smoke entering your living space exposes your family to carbon monoxide and soot, and it leaves a film on walls and furniture. In San Francisco’s older homes, we see this most often in the Outer Richmond and Sunset districts where ocean winds push against chimneys.
- You smell something like asphalt or barbecue sauce near the fireplace. That’s creosote, and the odor gets stronger as it builds up. Creosote is flammable, and stage-two creosote is exactly what ignites in chimney fires. If you smell it when the fireplace is cold, the buildup is already significant.
- You see black, shiny, or flaky buildup on the damper or firebox walls. Any visible creosote means a cleaning is overdue. In a San Francisco home with a wood-burning fireplace, creosote accumulates faster than most people expect because the fog keeps flue temperatures lower, which causes more condensation. If you can scrape it off with a fingernail, it’s past time to call us.
- Your gas fireplace makes a “whump” sound when it ignites. That’s delayed ignition, which means gas is building up before the flame catches. It’s startling, but more importantly it’s a sign of dirty burners or a misaligned pilot. The igniter should catch instantly, not after you hear gas pooling. Call us before you use the fireplace again.
- You’ve never had the chimney inspected since moving in. In San Francisco, many homes transfer ownership without a recent chimney inspection. You have no record of what’s in the flue or what condition the liner is in. An inspection and cleaning is much cheaper than repairing fire damage or treating carbon monoxide poisoning, and we’ll document everything we find with camera images you keep.
Our Process, Step by Step
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Book and verify. Call (831) 534-3789 and a live person answers, day or night. We schedule your sweep in San Francisco, then send you the name and photo of your technician before the appointment. On the day of the job, our technician arrives in uniform and shows a photo ID badge at the door. No exceptions.
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Protect the work area. We lay drop cloths from the front door to the fireplace, covering floors and any furniture within the work path. Our equipment is set up outside wherever possible, and we use HEPA-filtered vacuums inside to keep soot particles from spreading through your home. San Francisco apartments and condos require extra care here, and we treat every home like it has tenants below or next door.
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Inspect before we clean. We check the flue, damper, smoke chamber, and firebox before the brush ever touches the chimney. This order matters because the pre-cleaning inspection reveals smoking problems, animal nests, or liner damage that could be worsened by brushing. If we find something serious, we stop and call you in to look at it with us before we proceed.
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Sweep and document. We run rotary brushes through the flue, clean the smoke chamber and firebox, and remove all creosote, soot, and debris. After the sweep, we perform a post-cleaning video scan of the flue interior. You see the footage, and we explain anything that looks off. You’ll leave the job knowing the condition of your chimney, not guessing.
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Written report and guarantee. Before we leave, you receive a written service report and a written quote for any recommended follow-up work. Nothing is sold to you without evidence you’ve already seen. Every repair we perform carries our 365-Day Done Right Promise in writing: if the repair fails within one year, the second visit is free.
How Much Does Chimney Sweep Cost in San Francisco?
A standard chimney sweep in San Francisco typically runs $189 to $349 for a single-story home with an open-hearth wood-burning fireplace. Two-story homes with taller flues and steep roof access add difficulty, which raises the price toward the upper end of that range. Gas fireplace cleaning runs $149 to $289, and a full chimney inspection with video scanning is typically $199 to $399 depending on the level of access required. Those are the real numbers we quote in writing before we start, and the price doesn’t change once we’re on site.
What affects the price: flue height, roof pitch and access, the amount of creosote buildup, whether animals have nested in the flue, and the type of liner you have. A heavily glazed flue takes more time and chemical treatment than a lightly used one. San Francisco’s older Victorians often have multiple flues serving multiple fireplaces, and each flue is priced separately. If your chimney hasn’t been swept in several years, the extra labor is still covered by the written quote we give you, which is always provided before work begins.
How to avoid overpaying: insist on a written price before any work starts, and ask to see camera footage before agreeing to any repair. Reputable sweeps document damage with video, not verbal descriptions. We include a camera inspection and photo report with every sweep in San Francisco, and our free estimate covers the full scope of work. Call (831) 534-3789 for an exact quote; you’ll have a real number before we ever set foot on your property.
Our Service Area Near San Francisco
Our trucks cover all of San Francisco, from the Sunset and Richmond districts to Bernal Heights, Noe Valley, the Mission, and the Bayview. We also serve Oakland, where our full team handles sweeping and liner work through our Chimney Sweep in Oakland division, and San Mateo, including the Peninsula neighborhoods around downtown, through our Chimney Sweep in San Mateo team. Berkeley, Vallejo, Richmond, San Rafael, Hayward, Albany, Fairfax, Walnut Creek, and Novato are all within our service area. Most appointments are scheduled within a few business days, and seasonal fall bookings in San Francisco run two to three weeks out in October and November. Planning ahead means you’ll be burning with a clean flue before the temperature drops. You can always see more about our full scope of work on our home page or the dedicated Chimney Sweep in San Francisco overview.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco area and know this community well, from the city itself to our Brisbane Chimney Sweep service area. Use the map below to see our full coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Chimney Sweep in San Francisco
A chimney sweep is a professional cleaning of the interior flue, smoke chamber, damper, and firebox of your fireplace or wood-burning stove. The purpose is to remove creosote, soot, and debris that build up during burning season and create fire and carbon monoxide risks. At Alcott Chimney San Francisco, a sweep also includes a visual inspection of all accessible chimney components and a written report. Most sweeps take under two hours, and we charge $189 to $349 for a standard job in San Francisco. Call (831) 534-3789 for a free estimate.
A standard chimney sweep takes about 60 to 90 minutes from the time our technician arrives to the time we pack up. Taller flues, heavy creosote buildup, animal nest removal, and multiple fireplaces all add time. We’ll give you a realistic window when you book, and the written quote includes all labor, so the time doesn’t become a surprise charge. Most San Francisco homeowners are back to normal by early afternoon.
A chimney sweep in San Francisco costs between $189 and $349 for a standard single-flue open-hearth fireplace. Gas fireplace cleaning runs $149 to $289, and video inspections run $199 to $399. The exact price depends on flue height, roof access, creosote condition, and whether any blockages need removal, and you’ll receive a written quote before any work begins. Call (831) 534-3789 and we’ll give you a real number over the phone.
Yes, we clean and repair gas fireplaces throughout San Francisco, including gas log sets, direct-vent inserts, and ventless models. We also perform gas fireplace repairs, from pilot assemblies to thermopiles to valve replacements, and we carry professional trade components rather than box-store substitutes. A gas fireplace cleaning costs $149 to $289 and includes burner, log, and vent servicing. If your gas fireplace is acting up, call us at (831) 534-3789 and a live person will schedule your visit.
Our phone line is answered by a live person 24 hours a day, seven days a week. If you smell smoke when the fireplace is off, hear an animal in the flue at night, or have a gas fireplace that won’t ignite, call (831) 534-3789 and you’ll speak to a human who can help. While a standard sweep is scheduled, we do reserve time for urgent safety issues like visible smoke entering the home or gas odors. In San Francisco, those calls tend to come in during the first cold snap of October, and we’re ready.
Every repair we perform is backed by our 365-Day Done Right Promise, a written guarantee that covers the repair for a full year from the date of service. If the repair fails within that year, the second visit is free. This guarantee is included on every job at no extra charge; it is not an upsell or an add-on. We also provide a written price before work begins, so both the cost and the coverage are in your hands before anything starts.
You don’t need to do much. Clear the area directly in front of the fireplace so our technician has a few feet of working space, and don’t light a fire within 24 hours of the appointment so the firebox is cool when we arrive. We handle everything else, including drop cloths, floor protection, and all cleanup. You’ll know who’s coming before we arrive, and they’ll show ID at the door.
Schedule Your Chimney Sweep Service in San Francisco Today
Call (831) 534-3789 and a live person will answer. We’ll give you a written price before any work begins, and you’ll know exactly who is coming to your San Francisco home before they arrive, by name and by photo. Every sweep includes a camera inspection and photo report, so you see the condition of your flue with your own eyes. If we repair anything, it’s guaranteed in writing for a full year. That’s the way Ruben Castellano has run Alcott Chimney San Francisco since 2002, and we’re not changing now.
Written by Ruben Castellano, Owner at Alcott Chimney San Francisco, serving San Francisco since 2002.