Chimney sweeps in Chester County, PA: township rules and what to check

Updated November 10, 2026 · KeystoneProGuide editorial team

What should Chester County homeowners know about chimney sweeps?

That local codes here deal with how a chimney is kept and used, not with certificates at sale. No Chester County municipality turned up, in the searches made for this guide, that requires a chimney inspection when a house changes hands. What the county's codes do contain are rules about what you may burn, about smoke that bothers the neighbors and about keeping the stack itself sound. Add a housing stock that is newer than the state's and a larger share of oil heat, and the picture for Chester County is one of maintenance, not paperwork.

What do Chester County municipal codes say about fireplaces and chimneys?

Three examples show the range.

Easttown Township regulates indoor fires inside its open-burning ordinance. Fireplaces and wood or coal stoves are permitted in homes solely for heating, and the code says only seasoned firewood, coal or solid fuels recommended by the manufacturer may be burned in them. If the smoke, ashes or smell from a chimney are objectionable or offensive to the general public, a township or fire official may suspend the use of the fireplace or stove. Ashes and embers may not be left within 10 feet of anything combustible.

That rule lines up with federal advice. The Environmental Protection Agency says a correctly used wood-burning appliance should generate very little smoke, and that wet or unseasoned wood should not be burned. In Easttown a smoky chimney is a reason for a sweep's visit and a possible visit from the township as well.

Tredyffrin Township's property maintenance code lists chimneys among the structural members that shall be kept structurally sound and free from defects and damage, and says roofs and flashing shall be sound and tight. A leaning stack or open mortar joints there is a code matter, not only a repair you can put off.

The City of Coatesville's housing standards say every chimney and smoke pipe shall be installed so that it functions safely and effectively and shall be maintained in sound working condition.

Other municipalities in the county have their own codes. For a permit question about a stove, a liner or a rebuilt stack, the building code office of your township or borough is the place to ask.

How does Chester County's housing shape chimney work?

It is newer than the state's by the Census Bureau's measure. An estimated 10.7 percent of the county's 212,491 housing units have been built since 2010, against 6.1 percent for Pennsylvania, and only 12.6 percent date from 1939 or earlier, half the statewide 25.0 percent. The Chester County Planning Commission says about 1,500 new units have been added in most years since 2010, with fewer single-family detached houses and more twins and apartments among them.

For chimney care, the type of fireplace matters to the sweep. CSIA, the trade's certification body, gives different thresholds: a masonry fireplace is swept at 1/8 inch of sooty buildup, while a factory-built fireplace should be swept when any appreciable buildup occurs, because the deposit is acidic and corrodes its metal parts. CSIA also says that a factory-built metal chimney damaged by a chimney fire must be replaced, not repaired. If you do not know which kind your Chester County house has, the first inspection will tell you.

The one house in eight that pre-dates 1940 is a different case. An old masonry flue may be the unlined type that CSIA describes, and it deserves a careful first inspection before regular use.

How are Chester County homes heated?

The Census Bureau's estimates of the main heating fuel in the county's 204,774 occupied homes, beside the state's:

Heating fuel	Chester County	Pennsylvania
Gas	47.7%	56.4%
Electricity	31.1%	25.3%
Fuel oil or kerosene	18.3%	14.0%
All other fuels	2.5%	3.8%

The oil figure is the one that concerns a sweep. CSIA says an oil flue should be inspected annually because soot builds up on the liner, so for the 18.3 percent of Chester County homes on oil the chimney is part of yearly heating maintenance even with no fireplace in the house. The electricity figure says less than it seems: the Census counts the main fuel, not fireplaces, so a home heated by electricity may still have a fireplace that someone lights a few times a year. Pennsylvania's Ready PA program gives the same instruction to every household, to have a professional clean and inspect the chimney and vents each year.

Who do you turn to in Chester County if a job goes wrong?

For a dispute with a contractor in Chester County, the state offers the route that applies everywhere. The Attorney General's office takes complaints about home improvement contractors and asks residents to report unregistered ones on 1-888-520-6680. Its contractor search can be filtered to Chester County and has a work type called Chimney Sweep, which is the quickest way to see whether a company quoting on a repair at your address is registered.

What Pennsylvania requires of chimney sweeps explains what registration does and does not prove, how to choose a chimney sweep covers credentials, and the cost guide has the published prices. Businesses serving the county are on the Chester County chimney sweeps page.