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.
Fast, Reliable Chimney Sweep Across San Lorenzo
A standard chimney sweep in San Lorenzo runs $189 – $289, and a Level 2 inspection with a camera typically adds $150 – $250. That’s the honest ballpark before you ever pick up the phone. We work throughout the 94580 ZIP and the streets off Via Alamitos, Grant Avenue, and Washington Avenue, and we book sweeps and inspections within a 3 – 5 day window, not weeks out. Hank Delano leads our crews, and every job starts with a written price before any tools come off the truck. Call (830) 251-4560 and a live person answers, day or night.
Why Flint Chimney Sweep Is San Lorenzo’s Preferred Chimney Sweep Company
San Lorenzo homeowners call us because we put the whole job in writing before we start. Not a vague “we’ll see when we get there.” A written price, a written scope, and a written 365-Day Done Right Promise on every repair we make. That’s The Garrison Standard, the same operating code every Garrison Partners location follows, and it’s been in place since 2002. If a covered repair fails within one full year, we come back at no charge. No argument, no second invoice.
Our technicians arrive in uniform, background-checked, and inside the appointment window we give you. You’ll know exactly who’s walking through the door. We’ve swept and inspected chimneys in San Lorenzo long enough to know which homes on the older 1940s and 1950s lots near the Arroyo Viejo tend to have unlined fireboxes and which newer construction off Bockman Road has prefab pipe that needs a different inspection approach. That local knowledge means we don’t waste your time or ours.
We also answer the phone. 24/7. A live person, not a voicemail tree. If you’re smelling smoke in the house on a foggy San Lorenzo evening, you get a real human who can schedule a crew.
Chimney Sweep Services in San Lorenzo
Chimney Sweep Services in San Lorenzo mean more than running a brush up the flue. A proper sweep removes creosote and soot from the flue liner, smoke chamber, damper, and firebox, then verifies the chimney draws correctly. In a 94580 home, that also means checking how the marine fog has treated the crown and cap. A standard sweep in San Lorenzo runs $189 – $289, and includes a Level 1 inspection of the accessible portions of the chimney. If we find something that needs a closer look, we’ll tell you plainly and show you the camera footage.
Creosote and Soot Removal
Creosote builds up on flue walls every time wood burns. In San Lorenzo, the damp marine air makes creosote sticky and more likely to trap additional particles, which is why a flue here can glaze faster than one in a drier climate. We remove first, second, and third-degree creosote and clean soot from the firebox, smoke shelf, and damper. You get a photo report showing the flue walls before and after.

Annual Sweep and Fireplace Cleaning
An annual sweep keeps your fireplace burning safely through the Bay Area’s cool, damp winters. We clean the firebox, remove ash and debris, check the grate, and sweep the full length of the flue. If you’re in a home near San Lorenzo High or the community park off Grant, and you burn two or three cords a season, an annual sweep is the right cadence. If you burn less than a cord and we find only light first-degree creosote, we’ll tell you work can safely wait. That’s the straight answer, not a sales pitch.

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.
Chimney Cleaning in San Lorenzo
Chimney Cleaning in San Lorenzo is the core of what we do, and it’s not a one-size job. The process depends on the appliance: a masonry fireplace off Via Manzanas needs a different approach than a wood stove insert near Lewelling Boulevard. We’ll match the brush type and sweep method to your chimney, not just run whatever’s on the truck. A standard Chimney Cleaning runs $189 – $289, and we agree on that price in writing before we start. You’ll never see a surprise number on the invoice.
Level 1 Inspection
A Level 1 inspection is included with every sweep and checks the chimney’s accessible portions: flue, damper, firebox, and the exterior. For a chimney that’s been regularly maintained and hasn’t changed use, this is usually all you need. We’ll note the condition of the crown and cap, which matters more in San Lorenzo than most places because of the fog.
Level 2 Inspection
A Level 2 inspection adds a camera run through the full flue, and it’s required by the National Fire Protection Association when a property changes hands, after a chimney fire, or if the home has had earthquake damage. In San Lorenzo, with the Hayward Fault a few miles east, we recommend a Level 2 on any older masonry chimney that hasn’t been camera-checked in five years or more. It runs $150 – $250 beyond the sweep.
San Lorenzo’s 94580 ZIP is one of the few places in the East Bay where the same marine fog layer that rolls through the San Lorenzo Creek corridor from San Francisco Bay can hit a masonry chimney crown and cap with near-daily wetting cycles. We routinely find spalling brick and cracked crowns here that you simply don’t see in drier inland cities like Pleasanton or Livermore just a few miles east. That’s the local condition a Chimney Sweep has to account for before the brush ever goes in.
Trusted Brands We Service in San Lorenzo
We work with professional-grade chimney products from Famco, Copperfield, and DuraFlex, and we specify parts by job, not by margin. If your San Lorenzo fireplace needs a new damper, cap, or a furnace flue connector, we can typically source it fast. We also work with HeatShield for flue joint repair on older San Lorenzo masonry chimneys where a full reline isn’t necessary. When we recommend a product, we’ll tell you exactly why that one fits your chimney and what it costs. No upgrading you into something you don’t need.
Common Chimney Sweep Problems We See in San Lorenzo Homes
- Fog-driven crown and cap damage: The marine layer off San Francisco Bay settles into the San Lorenzo Creek corridor and keeps masonry chimneys damp for parts of most days. Spalled brick and cracked crowns are common, and they let water into the flue, which accelerates liner damage.
- Rusted damper blades: Homes within a mile or two of the Bay, especially near Via Alamitos and Grant Avenue, see rusted dampers from years of moist air. A rusted-open damper sends smoke and heat up the chimney when the fire’s out, and it can make a clean flue feel like a drafty mess.
- Unlined or under-lined fireboxes in 1940s and 1950s homes: Much of San Lorenzo’s housing stock dates to the post-war boom. Many of those original fireboxes were built without a proper clay tile liner, or the liner’s degraded since. A camera run finds this fast.
- First-degree creosote misdiagnosed as worse: A brush-only sweep with no camera can’t tell the difference between flaking first-degree creosote and a glazed third-degree problem. We’ve seen San Lorenzo homeowners quoted for full relines when the flue just needed a sweep and a damper repair.
Pricing for Chimney Sweep in San Lorenzo, CA
A standard chimney sweep in San Lorenzo, CA runs $189 – $289. A Level 2 camera inspection adds $150 – $250. If you need a new damper, cap, or crown repair, we quote that as a separate line item with the brand and the reason in writing. Nothing gets recommended without camera evidence you can see yourself. The price we give you before the job is the price on the invoice. Every repair carries the 365-Day Done Right Promise, valid for one full year from the service date. Call (830) 251-4560 for a free estimate.
We Also Serve Cities Near San Lorenzo
Besides our regular work in San Lorenzo, our Chimney Sweep in San Lorenzo crews also cover Castro Valley, San Leandro, Union City, and Oakland. If you’re in one of those cities and need a sweep or inspection, the same written price and guarantee apply.
Serving San Lorenzo, CA - Our Local Coverage Area
We’re based in the San Lorenzo 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 Sweep in San Lorenzo
Most San Lorenzo homes that burn two or three cords of wood per season need a sweep every year. If you burn less than a cord and we find only light first-degree creosote, we’ll tell you the work can safely wait and save you the cost. Fog and marine air make creosote stickier here, so the honest answer depends on what the camera and the brush actually find, not a calendar.
A Level 1 inspection checks the accessible parts of the chimney and is included with every sweep. A Level 2 adds a camera run through the full flue and is required after a chimney fire, when a property changes hands, or after earthquake damage. A Level 3 is more invasive and is only needed when a Level 2 reveals a serious problem hidden in the masonry that can’t be reached otherwise. In San Lorenzo, with the Hayward Fault nearby, we often recommend a Level 2 on older masonry chimneys that haven’t been camera-checked in years. Call (830) 251-4560 and we’ll explain which level fits your situation.
Yes. Every job gets a written price before any work starts. That’s The Garrison Standard and it’s non-negotiable. A standard sweep runs $189 – $289, a Level 2 camera inspection adds $150 – $250, and any repair gets a separate written line item. The number you approve is the number on the invoice.
Yes, and it’s one of the most specific conditions we deal with in the 94580 ZIP. The same fog layer that rolls through the San Lorenzo Creek corridor from the Bay hits masonry crowns and caps with near-daily wetting and drying cycles. That leads to spalled brick and cracked crowns you don’t see a few miles inland. A cracked crown lets water into the flue, and the problem compounds from there.
No, and we won’t promise it. A proper sweep and inspection in San Lorenzo is booked, with a written price agreed before the truck rolls. Typical scheduling is within 3 – 5 business days. That window keeps the job honest and gives you time to see the price in writing before we arrive. Call (830) 251-4560 and we’ll get you on the schedule.
Written by Hank Delano, Owner at Flint Chimney Sweep, serving San Lorenzo, CA since 2002.





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