Mold Remediation in McSherrystown, PA
McSherrystown is the borough that sits right against the York County line, so close that many people assume it is part of Hanover. It is not; it is Adams County, and its dense rows of older homes have their own set of moisture problems.
McSherrystown is a borough in Adams County, Pennsylvania, United States. As of the 2020 census, McSherrystown had a population of 3,077. Packed into about half a square mile, that makes McSherrystown the most tightly built of the towns we cover, and its history goes back further than almost any of its neighbors. According to the borough's Wikipedia article, Patrick McSherry bought the land in 1763 and laid out lots, and The first known deed for one of these lots was dated June 27, 1765. Although McSherry may have intended his effort to be used primarily as outlots for Hanover residents, where they could keep their animals at times and obtain wood, it soon developed into a full-fledged town. In the twentieth century it was known for its manufacturers: McSherrystown was home to the headquarters of Teddy Bear manufacturer Boyds Bears, as well as the oldest operating family-run cigar manufacturer in the U.S. (since 1863), F.X. Smith & Sons.
Why McSherrystown homes grow mold
Density is the McSherrystown story. Rowhomes and closely spaced houses share party walls, roofs that drain toward a common gutter line, and lots too narrow for the grading and downspout extensions that would carry water away from the foundation. When one roof drain fails, the neighbor's cellar gets wet. Older cellars along Main and North streets have stone or block walls and floors that were poured long after the house was built, and in a humid summer they hold moisture the way a cave does. The EPA's guidance is that the key to mold control is moisture control, and in a rowhome that often means solving a drainage problem that crosses a property line.
The second pattern is the finished basement. McSherrystown houses are small, and homeowners understandably finish the cellar to gain a room. Carpet over concrete, drywall against a masonry wall, and a dropped ceiling are exactly the porous materials the EPA warns may have to be discarded once mold takes hold, and they hide the growth until the smell gives it away. The CDC's advice is direct: don't use carpet in places like bathrooms or basements that may have a lot of moisture.
McSherrystown was laid out as somebody else's spare land, and that is still the shape of it. The borough began, as the history section below records, as outlots meant for the use of Hanover residents before it grew into a town of its own. The result is a lot of housing packed into about half a square mile, much of it in rows sharing party walls — which means a water problem in one cellar is frequently two households' problem.
Signs to watch for in a McSherrystown home
In a rowhome, the signs cluster along the shared wall and the front foundation where the downspouts land. Look for a white crust or dark staining on the party wall in the cellar, for a musty smell that is strongest near the front of the basement after rain, and for finished-basement baseboards that have swollen or pulled away from the wall. Upstairs, watch the ceiling under the bathroom and the wall behind any radiator or plumbing stack shared with the neighbor. Because the houses are small and air moves easily from the cellar to the living space, a smell on the first floor often means the basement, and a smell that comes and goes with the weather almost always means humidity rather than a single leak.
Where mold turns up in McSherrystown homes
McSherrystown is the most tightly built of the towns we cover — roughly three thousand people in about half a square mile — and the rowhome form drives most of what we see here.
| Where | Why it happens here | What actually fixes it |
|---|---|---|
| Shared party-wall cellars | Water entering on one side of a party wall wicks through masonry into the neighbouring cellar; only one owner may know there is a problem | Fixing the source on whichever side it originates, which sometimes means a conversation with the neighbour before any work starts |
| Narrow side yards and short downspout runs | Roof water discharged within a foot or two of the foundation, with nowhere for it to go between tightly spaced houses | Downspout extensions and regrading in the little space available; sometimes piping discharge to the street |
| Rear additions and enclosed porches | Later additions built low to the ground over shallow crawl spaces or slabs, with poor drainage behind them | Ground cover and drainage at the addition, which is usually the wettest part of a rowhome |
| Finished basements in narrow houses | Limited floor area upstairs pushes living space down into cellars that were never dry enough for it | Removing finishes off the masonry, drying, and conditioning before anything is rebuilt |
What remediation costs in McSherrystown
McSherrystown quotes fall inside the same national ranges as the rest of the county. What moves them here is how much finished material sits against a damp party wall, since all of it comes out before the masonry can be cleaned.
| Where the mold is | National range reported by Angi and HomeAdvisor |
|---|---|
| Basement | $500 to $3,000 |
| Crawl space | $500 to $2,000 |
| Attic | $1,000 to $4,000 |
| Inside walls | $1,000 to $20,000 |
| Whole house | $10,000 to $30,000 |
No survey publishes Pennsylvania or Adams County figures, so these are the national ranges from Angi's July 2026 and HomeAdvisor's June 2026 mold remediation cost guides. Our cost page sets out the full tables, what a quote leaves out, and what moves an Adams County job up or down.
What we help McSherrystown homeowners with
Most McSherrystown work is basement work, and our basement mold remediation page explains what a thorough job involves in a shared-wall house: containment that protects the rest of a small home, removal of soaked materials, cleaning of the masonry and framing, and drying before anything is rebuilt. Where a homeowner is unsure what they are looking at, our mold inspection and testing page explains what an inspection covers and when sampling is worth paying for. Homes with additions over crawl spaces are handled on the crawl space mold remediation page.
McSherrystown's rowhomes are popular with first-time buyers priced out of Hanover, and inspections often flag basement dampness. Our real estate mold inspection page covers what Pennsylvania's seller disclosure law actually requires and what a buyer should ask for. For numbers, the cost guide explains what national surveys report and why a small rowhome cellar usually lands at the lower end.
Three things to ask before anyone starts work
Pennsylvania licenses nobody to remediate mold, so these are the checks that stand in for a licence:
- Which IICRC certification do you hold? Ask for the Applied Microbial Remediation Technician credential by name, and whether the job follows the ANSI/IICRC S520 standard.
- What is your Pennsylvania home improvement registration number? It belongs on the estimate and the contract, and you can check it with the Attorney General before you sign.
- Where is the water coming from, and how is that fixed? Get it in an itemised quote. A remediation that skips the moisture source is one you pay for twice.
Our home page sets out the rest of what Pennsylvania law entitles you to, including the rule that no payment may be demanded before a contract is signed and the three business days you have to cancel. The cost page covers what the work runs and what a quote leaves out.
What to look for
Ask for a written, itemized quote before work begins. Ask to see the technician's IICRC Applied Microbial Remediation Technician certification and whether the work follows the IICRC S520 standard. In a rowhome, ask specifically how containment and negative air will be set up so that dust and spores from the cellar do not travel through a small house, and how the crew will get materials out without tracking through living space. Ask about the drainage plan and whether it depends on a neighbor's roof or gutter, because if it does, you should know that before you pay for the interior work.
McSherrystown sits right against the York County line, and we cover it from Gettysburg; the drive is short. If the cellar has that damp smell every summer, the conditions for mold are already there whether or not you can see it yet.
Frequently asked questions
Do shared walls in McSherrystown rowhomes spread mold between houses?
Mold itself does not travel through a solid masonry party wall, but moisture does, and moisture is the whole problem. A failed roof drain, a downspout that dumps at the shared foundation line, or a leaking neighbor's water heater can keep your cellar wall wet from the other side. A remediation plan for a rowhome should identify where the water is coming from even when the answer is next door.
Is McSherrystown in Adams County or York County?
Adams County. McSherrystown runs directly into Hanover, which is in York County, and the two share a street grid, but the borough line is the county line. We cover McSherrystown as part of the Adams County area we serve from Gettysburg.
I finished my McSherrystown basement and now it smells. Is the mold behind the drywall?
Very possibly. Drywall against a masonry wall and carpet over concrete both trap moisture and hide growth, and by the time you smell it the affected area is often larger than what is visible. The EPA advises that porous materials that have become moldy may have to be thrown away because the growth fills the material itself. An inspection with a moisture meter and a small inspection opening is the way to find out how far it goes before committing to a full remediation.
How do I get a quote for a McSherrystown home?
Use the form on this page with McSherrystown already filled in, or go to the contact page. Tell us where the growth or smell is, whether the basement is finished, and whether the house is being sold. You can also call us at (717) 670-3330.
My neighbour's basement is wet and mine is too. Whose problem is it?
Practically, both of yours; the water does not respect the party wall. In a rowhome the source is often on one side only, so the fix belongs to whichever property it originates from, but the growth can appear in both cellars and cleaning only one side leaves the moisture in place. The useful first step is an inspection that establishes where the water is actually entering, so the conversation with your neighbour starts from a finding rather than an argument. Get the moisture readings in writing.
Hanover is right next door. Do you cover it too?
No. Hanover is in York County and belongs with a York County service, while McSherrystown is a borough in Adams County. The two run into each other on the ground and the boroughs share history, since McSherrystown's lots were originally laid out as outlots for Hanover residents, so the question comes up constantly. The county line is still the line we work to, and if your address is on the McSherrystown side you are covered.
Get a mold quote for your McSherrystown home.
Request a free mold quote in McSherrystown
Tell us about the house and what you have seen or smelled. We read every request and follow up to arrange a look at the property. No obligation.
Prefer to talk? Call (717) 670-3330. We read every request either way.