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.
Chimney Company in Walnut Park, CA
Chimney repair in Walnut Park usually comes down to age, not use. Most homes here were built between the 1920s and 1950s, and the fireplaces that came with them have spent decades sitting unused while mortar slowly crumbled, flashings loosened, and crowns cracked under the dry Southern California sun. We see far more structural problems in Walnut Park than creosote buildup, because these fireplaces are decorative, not primary heat. Ontario Chimney has served Walnut Park since 2014, and our job is to catch the decay before a winter rain turns a hairline crown crack into a water-stained ceiling. Call (833) 467-7685 to get an honest assessment.
Why Walnut Park Homes Are Different
Walnut Park is an unincorporated pocket of southeast LA, wedged between Huntington Park and South Gate, and the housing stock tells the story. These are mostly 1920s to 1950s single-story stucco bungalows and compact Spanish-style homes on narrow lots, many with their original brick fireplaces still in place. In a neighborhood where lots are tight and rooflines sit feet apart, a chimney problem doesn’t stay private for long. If mortar is crumbling on one house, the neighbor’s chimney was probably built the same year by the same crew.
The climate matters too. Walnut Park gets very little rain, so masonry doesn’t suffer freeze-thaw cycles the way it does in colder markets. What it does get is years of dry heat and occasional wildfire-season worry. Ember exposure to an uncapped or cracked flue is a real concern during Santa Ana events. More commonly, the first sign of trouble is water staining on a ceiling after a rare winter storm, or a bird nest discovered after a tenant reports smoke backdraft. A significant share of Walnut Park homes are rentals, which means maintenance gets deferred until a problem is impossible to ignore. Our inspections here lean heavily toward structural and pest issues, not heavy soot.
Styles & brands we work with





Our Main Walnut Park Services
The two services Walnut Park homeowners ask about most are chimney sweeping and dryer vent cleaning, and each has its own dedicated page on this site.
Chimney Sweep in Walnut Park
Even a fireplace that rarely gets used still needs a look. In Walnut Park, where original brick chimneys have often gone decades without attention, a sweep is the fastest way to find out whether the flue is actually safe. We remove soot and debris, check for blockages, and inspect the structure as we go. On the tight lots here, we also check the cap and crown from the roofline, because those are the first parts to fail in this climate. Full details on what a sweep covers in Walnut Park are on our Chimney Sweep in Walnut Park page.

Dryer Vent Cleaning in Walnut Park
Dryer vents are a leading cause of house fires, and in Walnut Park’s older homes, the vent run is often short but completely inaccessible without cutting into wall or ceiling space. Lint accumulation in a 1950s vent pipe is a fire hazard that has nothing to do with how new the dryer is. We treat dryer vent cleaning as a core fire-safety service, not an add-on. Our techs inspect the full run, clear it with professional equipment, and document the before and after. See our Dryer Vent Cleaning in Walnut Park page for what’s included.

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.
Chimney Repair in Walnut Park

Chimney repair in Walnut Park is less about heavy creosote and more about what happens to masonry and metal when they sit untouched for decades in a dry climate. The fireplaces here are mostly original to 1920s through 1950s construction, and the most common calls are cracked crowns, loose or rusted caps, failed flashings, and liners that are no longer safe to use. In a tightly packed neighborhood of rentals and older owner-occupied homes, the problem surfaces when someone finally lights a fire for the holidays or a tenant complains about smoke. Whether it’s a full reline with DuraFlex or a HeatShield resurfacing, the right repair depends on what the camera shows. For the full scope of that work, see our Chimney Repair service page.
Chimney Crown Repair
Signs you need it
You need crown repair when the concrete top of the chimney has visible cracks, spalling, or missing chunks, or when water stains appear on the ceiling near the fireplace after rain.
What it costs in Walnut Park
Chimney crown repair in Walnut Park typically runs $450 to $1,100 depending on the size of the crown and how much of the old concrete has to come off.
How we do it
We remove loose or deteriorated crown material, build a proper form, and pour a new crown with a slight slope and a drip edge so water sheds away from the flue instead of pooling against it.
Chimney Cap Installation
Signs you need it
You need a new cap when the existing one is rusted through, missing entirely, or you’re finding bird nests, leaves, or rain water inside the flue.
What it costs in Walnut Park
A new chimney cap in Walnut Park runs $180 to $480, with the higher end covering stainless steel models sized for older, non-standard flue openings.
How we do it
We measure the flue opening, order a cap from Famco or Gelco that fits properly, and secure it with mechanical fasteners so it stays put in the Santa Ana winds that sweep through the area.
Chimney Flashing Repair
Signs you need it
You need flashing work when the metal where the chimney meets the roofline is rusted, lifted, or missing, and water is getting in during the few heavy rains Walnut Park gets each winter.
What it costs in Walnut Park
Chimney flashing repair in Walnut Park runs $350 to $900, with most jobs falling in the middle when only a section of the old flashing needs replacement.
How we do it
We remove the old flashing, inspect the roof decking underneath for rot, and install new step and counter flashing that’s sealed correctly to both the chimney and the roofline.
What Chimney Repair Costs in Walnut Park
| Item | Typical range in Walnut Park |
|---|---|
| Chimney crown repair | $450 – $1,100 |
| Chimney cap installation or replacement | $180 – $480 |
| Chimney flashing repair | $350 – $900 |
Can you fix a leaning chimney in Walnut Park?
Sometimes. Some tilt is cosmetic settling that can be addressed with repointing and crown work. When the foundation itself is shifting, the repair becomes structural and may require a larger scope. We’ll show you the evidence either way before any work is recommended.
Do I need a new liner in an older Walnut Park home?
Not always. If the terra cotta liner has minor cracking, HeatShield resurfacing can restore a smooth, code-compliant flue without a full tear-out. If the damage is extensive or the flue is offset, a DuraFlex stainless liner may be the better call. We show you the camera footage so you can see exactly what we’re seeing.
Brands We Service in Walnut Park
We work with a curated set of professional-grade materials rather than whatever’s cheapest at the hardware store. That means DuraFlex stainless liners for relining, HeatShield for ceramic resurfacing, and Famco and Gelco caps and dampers. Most common parts are stocked on our trucks, which keeps Walnut Park repair jobs moving without a second visit. See the full list on our brands page.
See the difference
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After
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AfterPricing for Chimney Company in Walnut Park, CA
| Service | Typical range in Walnut Park |
|---|---|
| Chimney sweep and inspection | $180 – $320 |
| Dryer vent cleaning | $120 – $240 |
| Chimney crown repair | $450 – $1,100 |
| Chimney cap installation or replacement | $180 – $480 |
| Chimney flashing repair | $350 – $900 |
| Chimney liner installation | $2,200 – $5,500 |
| HeatShield resurfacing | $1,800 – $4,200 |
| Masonry repointing (sectional) | $500 – $1,500 |
What pushes cost up in Walnut Park is access. Single-story bungalows are easier than a steep Spanish tile roof, but tight lot lines and stacked additions can make scaffold placement awkward. We price every job with a flat quote before work starts, so the number you agree to is the number you pay.
Neighborhoods We Serve in Walnut Park
We cover all of Walnut Park’s 90255 ZIP code, and the work takes us into every part of this compact community. Most jobs here start with a visual inspection that tells us what we’re dealing with before any quote is written.
- Walnut Park core residential blocks
- Areas along Pacific Boulevard
- Streets bordering South Gate
- Streets bordering Huntington Park
- Portions along the I-710 corridor
Response time across the area is generally one to two business days for non-emergency work.
Service Area – Cities Near Walnut Park
We also work in the neighboring communities around Walnut Park, including Huntington Park, CA, Bell, CA, Cudahy, CA, and Maywood, CA. The housing stock is similar, which means the same deferred maintenance patterns show up across the whole area.
Serving Walnut Park, CA — Our Local Coverage Area
We’re based in the Walnut Park 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 Walnut Park
Most chimney repairs in Walnut Park don’t require a permit, but structural work like a full rebuild can. We’ll tell you when a permit is needed and handle the paperwork with LA County as part of the job, so you’re not left managing the process yourself.
For tenant complaints or possible safety issues, we prioritize rental properties and usually get there within one to two business days. Landlords and property managers can schedule multiple units in one visit if the properties are close together in Walnut Park.
We cover Walnut Park’s 90255 ZIP code and the surrounding communities of Huntington Park, Bell, Cudahy, and Maywood. If you’re within that service radius, we’ll come out. Call (833) 467-7685 with your address and we’ll confirm.
When you’re ready to schedule an inspection, repair, or cleaning, call (833) 467-7685 for a free estimate. We’ll tell you what we found, show you the evidence, and give you options without pushing work you don’t need.
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 Walnut Park Customers Say
"Cap keeps the birds out now, which after two springs of scratching noises is worth every penny."
— Tara Novak"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."
— Eric Tran"Swept it, capped it, and installed a proper damper. The downdraft smell in the summer that we'd lived with for years is gone."
— David Park