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.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
See the difference
Before
After
Before
After
Before
AfterHow Much Does Chimney Cap & Crown Cost in Alamo Square?
Most Alamo Square homeowners pay $145 to $385 for a chimney cap installed, and $330 to $780 for a chimney crown rebuild. A single job that includes both, which is common on the older Victorian and Edwardian homes around the park, typically lands between $475 and $1,050. A basic concrete crown repair with sealant runs less, while a full crown replacement on a wide multi-flue masonry chimney runs more.
We price the cap and the crown as two different things because they fail for different reasons. The cap keeps water, birds, and embers out of the flue opening. The crown is the concrete slab at the top of the chimney that sheds water away from the masonry below it. When a crown cracks, water gets into the brick and mortar, and that damage shows up months later as spalling brick and a stained ceiling inside the house.
Chimney Cap & Crown Cost Breakdown (2026)
Here’s what the work runs in the Alamo Square market this year. These are installed-prices, meaning labor and materials together, for a typical single-family home with one chimney.
| Line Item | Typical Range | What It Covers |
|---|---|---|
| Standard single-flue cap (stock size) | $145 – $260 | Galvanized or stainless cap fitted to a standard clay flue; suitable for most single-appliance chimneys |
| Custom or multi-flue cap | $260 – $460 | Fabricated cap for oversized openings, multiple flues under one lid, or non-standard dimensions |
| Stainless cap + animal guard | $220 – $400 | Stainless body with mesh spark arrestor and bird screen; longer service life against weather |
| Crown repair (cracks, sealant, patching) | $330 – $520 | Cleaning out failed joints and re-sealing a crown that’s still structurally sound |
| Full crown rebuild (single flue) | $520 – $780 | Removing the old crown and pouring a new one with proper overhang and drip edge |
| Full crown rebuild (multi-flue / large masonry) | $780 – $1,200 | Larger slab, more formwork, more material, longer cure time |
| Crown + cap together (typical) | $475 – $1,050 | The most common combined job; crown and cap addressed at the same visit |
What pushes a number toward the top of its range? Three things come up again and again. First, access: Alamo Square homes often sit tight to a neighbor with a shared party wall, and laddering a chimney on a three-story Victorian is slower work than on a ranch house. Second, existing damage: if water has already gotten into the masonry around a failed crown, we may find soft mortar underneath that has to come out before a new crown goes on. Third, material choice: a stainless cap with a proper mesh guard costs more than a galvanized stock cap but lasts considerably longer in a wet climate. We explain what we find before we touch anything, so there are no surprises on the invoice.
What Affects Chimney Cap & Crown Pricing in Alamo Square
The price of cap and crown work here isn’t just a function of size. Several local and structural factors move the number, and it helps to know them before you compare quotes.
- Flue size and count. A single standard clay flue takes a stock cap. A multi-flue masonry stack, common on the larger Edwardians near the park, needs a fabricated cap or several individual ones, and that changes the material cost.
- Chimney height and roofline. A short chimney on a low-pitch roof is quick to reach. A tall chimney on a steep gable, or one set back from the roof edge, takes longer to ladder safely and adds to labor.
- Crown condition. A hairline crack that just needs cleaning and sealing is a repair. A crown that’s crumbled, separated from the flue, or tilted away from the chimney is a rebuild, and the two are not the same job.
- Masonry underneath. If the crown failed and water got into the brick, the repair may include repointing or spot mortar work before a new crown is poured. We’d rather fix the cause than cap a leaking stack.
- Material grade. Stainless caps and guards cost more than galvanized. On a house you plan to keep, stainless is usually the smarter buy. We carry Gelco cap products so the cap is purpose-built weatherproofing, not a generic cover.
- Whether it’s a prefab or masonry chimney. A factory-built prefab chimney has its own dedicated cap and termination that has to match the system. A masonry chimney gets a conventional cap and poured or cast crown.
We source our caps and crown materials through trade-only channels, including Copperfield and Olympia Chimney supply, so the parts on your roof are the same specification a certified chimney engineer would call for. If you want to understand the full scope of the service before booking, our Chimney Cap & Crown in Alamo Square page walks through what the work involves from start to finish.
How to Save on Chimney Cap & Crown
There’s no coupon that changes the math here, but a few decisions genuinely lower the number without cutting corners.
- Fix the crown before the cap fails. A repair in the $330 to $520 range today prevents the masonry damage that turns into a rebuild or a relining job later. Caught early, water intrusion is cheap to stop.
- Bundle the crown and cap at one visit. Doing both together saves the cost of a second trip and a second ladder setup. Most combined jobs come in lower than the two quoted separately.
- Choose stainless over galvanized for a keeper home. A galvanized cap may cost less up front but rusts through. Stainless with a proper guard lasts longer, so you’re not paying twice.
- Get the sweep done at the same visit. If the chimney is due for cleaning, having the sweep done while we’re already on the roof is more efficient than booking two separate appointments. One call covers the sweep, the vent, and the repair.
- Ask for a free estimate and a written scope. A clear line-item quote tells you what’s repair and what’s replacement. Call (833) 620-7061 and we’ll price it before any work begins.
One thing we won’t do is sell you a crown you don’t need. If the crown is sound and only the cap is missing or damaged, that’s the job, and we’ll tell you so. The inspection is where the honesty lives.
FAQs – Chimney Cap & Crown Cost
How much does a chimney cap cost in Alamo Square?
A chimney cap in Alamo Square typically runs $145 to $460 installed, depending on whether it’s a stock single-flue cap or a custom or multi-flue fabrication. Stainless caps with an animal guard sit in the middle of that range. Call (833) 620-7061 for an exact quote, which is free.
Is it cheaper to repair or replace a chimney crown?
It’s cheaper to repair a crown ($330 to $520) when the cracks are surface-level and the crown is still attached and level. A full rebuild ($520 to $1,200) is the right call when the crown has crumbled, separated, or tilted. A repair on a failing crown is money spent twice, so we check before recommending either.
Do I need a new crown if my chimney cap is broken?
Not necessarily. A broken cap, which sits above the flue, doesn’t damage the crown, which sits below it. But a missing cap lets rain straight down the flue and birds nest in it, so it should be replaced promptly. We assess both at the same visit so you get an accurate picture.
How long does cap and crown work take?
Most cap installs take under an hour. A crown rebuild is a longer visit, often two to four hours on a single-flue chimney, because the old material comes out, the new crown is formed, and it needs cure time. We schedule accordingly and tell you the window up front.
Can you come out today for a cap or crown estimate?
We can’t guarantee same-day availability, so call (833) 620-7061 and we’ll find the soonest opening that works for you. Estimates are free and we explain what we find in plain terms before touching anything.
Where We Work Across Alamo Square and Nearby
We serve homeowners throughout Alamo Square and the surrounding neighborhoods, from the painted Victorians facing the park to the quieter blocks just off Fulton. If you’re keeping a fire going through the cooler months, a sound cap and crown are the two cheapest pieces of protection on the roof. Our home base covers how sweeping, dryer vent cleaning, and structural repair fit together under one call, so you’re not coordinating three contractors for related problems on the same chimney.
We watch these components closely because the failures are quiet. A crown hairline crack doesn’t announce itself. It shows up as a damp patch on a ceiling weeks later, after the next real rain. Getting a cap and crown checked during a routine sweep is the cheapest way to stay ahead of that. And a related point: your dryer vent is a fire risk your chimney sweep should also check, which is why we clean dryer vents alongside chimneys. It’s the same combustion-safety mindset, applied to the other appliance in the house that vents to the outside.
When we bring materials, we bring professional-grade materials: DuraFlex liner systems for relining, HeatShield for liner resurfacing and joint sealing when the flue needs it, Gelco caps, and Famco venting components where they apply. These are the brands specified by certified chimney engineers and sold through trade supply lines like Copperfield and Olympia Chimney, not hardware-store substitutes. That matters for a cap and crown because the difference between a part that holds up and one that rusts or cracks is mostly in the source.
Get a Free Cap & Crown Estimate in Alamo Square
If your cap is missing, your crown is cracked, or you’re just not sure what’s up there, call (833) 620-7061 for a free estimate. We’ll look at the cap and crown, explain what we find in plain terms, and price the work before we start. No pressure to buy something the chimney doesn’t need. One call covers the check, the sweep if it’s due, and the repair if it’s warranted. Built to spec, not built to last until we leave.
Written by the team at Chimney Sweep Alamo Square, serving Alamo Square and the surrounding neighborhoods with chimney sweeping, dryer vent cleaning, and chimney repair.
Pricing reflects the Alamo Square market as of 2026. Chimney Sweep Alamo Square offers free estimates – call (833) 620-7061.
What Our Customers Say
"Drop cloths everywhere, HEPA vac, and not a speck of soot on the carpet. I'd been dreading the mess for nothing."
- Rosa Herrera"Creosote buildup was worse than I realized. He measured it, showed me the glazing on the flue with the camera, and was honest that we were closer to a chimney fire than I wanted to hear."
- Michelle Nguyen"Liner was cracked in two places. He walked me through the repair options honestly, including the one that was cheaper for him and better for me."
- Miguel Castillo