Monsey's housing has changed faster than almost anywhere in Rockland: 1950s and 1960s ranches and splits along Route 306, Maple Avenue and Saddle River Road have been expanded upward and outward, and new multi-story homes and townhouses have gone up across the hamlet. Expansions matter for chimneys in two ways. An addition built around an old stack can leave the original crown and flashing buried in a new roofline, and a new, larger heating plant or extra water heaters are often connected to the original flue. A chimney sized and lined for a 1960 oil burner is not automatically right for a 2020s gas boiler serving a much bigger house.
Large households also mean heating systems that run hard from October to April and hot water that is in use most of the day, so the flue sees a lot of exhaust. Annual inspection of the heating flue, carbon monoxide alarms on every level, and a correctly sized stainless liner when an appliance is changed are the three things a chimney company will stress in Monsey. For houses with wood-burning fireplaces, the usual seasonal sweep applies.
Monsey is unincorporated, in the Town of Ramapo (some addresses fall in the Villages of Airmont, Wesley Hills, New Hempstead or Spring Valley); permits for relining and rebuilds go to the Ramapo Building Department or the relevant village. Every contractor needs the Rockland County home improvement license.
What chimney work costs in Monsey (2026)
| Job | Typical price |
|---|---|
| Chimney sweep (wood-burning flue) | $150 – $375 |
| Level 2 camera inspection (sale, new appliance, after a fire) | $250 – $600 |
| Chimney cap or damper replacement | $200 – $850 |
| Crown repair or rebuild | $500 – $2,000+ |
| Flashing reseal or replacement | $300 – $1,800 |
| Tuckpointing / repointing | $500 – $2,500 |
| Stainless steel liner | $900 – $3,800 |
| Partial or full rebuild | $1,500 – $15,000 |
Ranges are published 2026 national figures (HomeGuide's chimney repair, chimney sweep and chimney liner cost guides; Angi's 2026 chimney repair and tuckpointing cost pages), not quotes from this site. Rockland prices tend to sit in the upper half of national ranges. Full breakdown: Rockland chimney repair cost guide.
Services in Monsey
Chimney repair
Cracked crowns, missing caps, leaking flashing, spalling brick and crumbling mortar joints.
Repair costs & signs →Chimney sweep & inspection
Annual cleaning, Level 1 and Level 2 camera inspections, pre-sale and post-fire checks.
What an inspection covers →Chimney liners & relining
Stainless steel liners for cracked clay flues, oil-to-gas conversions and wood stove inserts.
Liner costs & when you need one →Chimney rebuilds & masonry
Leaning or crumbling stacks rebuilt from the roofline up, crown replacement, waterproofing and brick replacement.
Rebuild costs & what to expect →How it works
- Tell us about the job. Sweep, inspection, leak, liner or rebuild, and what you have noticed. Photos of the stack and firebox help.
- We match you with a local pro. One independent chimney company, licensed in Rockland County and insured, that serves your town. We do not send your request to five companies.
- Get a free quote. They look at the chimney, from the roof or with a camera, and quote in writing. You decide; no fee and no obligation.
Monsey questions
What does a chimney liner cost in Monsey?
HomeGuide's 2026 range for an installed stainless liner is $900 to $3,800; the tall flues on expanded multi-story Monsey homes, and insulated liners sized for a large boiler, typically land in the $3,000 to $6,000 band locally.
My addition covered part of the chimney. Is that a problem?
It can be. Flashing and crowns that end up inside a new roof or wall can leak unseen, and a flue that now ends too close to the new roofline may not draft properly; codes require the chimney top to clear nearby roof surfaces by set distances. A Level 2 inspection with a look at the attic and roof is the way to find out.
Who handles the permit?
The chimney company or mason, with the Town of Ramapo Building Department or the village building department if you are inside one. Ask for the permit number before work starts.
Request a free quote in Monsey
Prefer to talk? Call (845) 999-0485, leave a message and we'll call you back.