Conewago Township wraps around McSherrystown on the edge of Hanover. It is one of the more suburban parts of Adams County, with many newer subdivisions and townhouse communities. East on PA Route 116 through Bonneauville toward McSherrystown, about 25 minutes from our office.
The township has about 3,319 homes, and the median was built in 1989. About 20.6% are attached, more than twice the county share, which reflects the townhouse rows found in newer developments near Hanover.
Most homes have poured basements, slab-on-grade lower levels, or crawl spaces, and many basements are finished. Flood claims are few, just 3 in the township, two of them from Tropical Storm Lee in 2011. Mold here usually comes from inside: plumbing leaks, sump failures, and finished spaces with high humidity.
Quick answer
Conewago Township has about 3,319 homes, and 37.1% were built before 1980 (49.5% across Adams County). FEMA records 38 flood insurance claims in ZIP 17331, most in 1996. Published national benchmarks put a typical mold remediation project at $1,223-$3,757 (Angi) to $1,500-$6,000 (HomeGuide); a written quote after inspection sets the real price, and the first step is always finding the water.How costs break down.
How old the homes are, how many share walls, and how often water has come in, compared with Adams County and Pennsylvania.
| Measure | Conewago Township | Adams County | PA |
|---|---|---|---|
| Population | 7,964 | 106,115 | 13,018,639 |
| Housing units | 3,319 | 43,672 | 5,806,452 |
| Median year built | 1989 | 1980 | 1965 |
| Built before 1940 | 14.1% | 17.5% | 25.0% |
| Built before 1960 | 25.0% | 29.4% | 44.9% |
| Built before 1980 | 37.1% | 49.5% | 67.2% |
| Built 2000 or later | 33.7% | 22.3% | 14.3% |
| Single-family detached | 72.6% | 74.7% | 56.6% |
| Attached homes (rowhouse, twin, townhouse) | 20.6% | 9.3% | 18.8% |
| Mobile homes | 0.4% | 5.5% | 3.5% |
| Owner-occupied | 87.4% | 78.9% | 69.3% |
| Median home value | $239,800 | $268,500 | $254,500 |
Named events with claims in Conewago Township: Tropical Storm Lee 2011 (2), Hurricane Ida 2021 (1).
Sources: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates, tables B01003, B25001, B25003, B25024, B25034, B25035 and B25077 (profile); FEMA OpenFEMA NFIP redacted claims, data as of 2026-09-08. Municipal claims use FEMA's NFIP community; ZIP claims use the reported ZIP code, which can cross municipal lines. ACS figures are survey estimates with margins of error, and small places have wider margins. Paid amounts are not adjusted for inflation.
Staining on a wall or ceiling you share with a neighbor can mean a leak in their unit.
Swollen or stained particleboard under a sink points to a slow leak that may have grown mold behind the cabinet.
Tiles that move or grout that keeps cracking around a tub or shower means water is getting into the wall.
A stale smell in a finished basement or lower level usually means high humidity or hidden growth.
Carpet that feels damp near the sump pit can mean the pump is struggling or the pit is overflowing.
Conewago Township has a median year built of 1989 and many townhouses. In attached homes, plumbing runs through shared walls and floors, and a leak in one unit can wet framing in the next without either owner seeing it right away.
Flooding is not common here, with just 3 claims on record, two from Tropical Storm Lee. The main sources are leaks from plumbing, appliances, and showers, and humidity in finished basements. Tight newer construction keeps that moisture inside unless fans and dehumidifiers remove it.
Conewago Township's newer subdivisions and townhouses near Hanover see most mold from plumbing leaks and finished basements, not from flooding.
Leaks under sinks, behind dishwashers, and around tubs and showers.
Leaks under sinks, behind dishwashers, and around showers wet cabinets, drywall, and subfloors. We cut out what is damaged, dry the framing, and clean before rebuild.
Finished basements in subdivision homes and townhouses.
Finished basements run humid in summer. We remove moldy drywall and carpet, clean the framing, and set up a dehumidifier.
Tracking where moisture comes from in attached homes.
In townhouses, moisture can travel between units. An inspection with moisture mapping shows where it starts.
Every service we offer is available in Conewago Township.
We use moisture meters and thermal imaging to trace a leak, including across shared walls when needed.
We seal off the area, remove moldy drywall, cabinets, or flooring, and clean the framing.
We dry the framing and recheck it before anything is rebuilt.
We point out the plumbing or caulking repair needed and recommend humidity control for finished spaces.
In townhouse communities, we work around HOA rules on parking and equipment and can provide written findings for the association.
Conewago Township is about 25 minutes east on Route 116.
Document it with photos, let your neighbor and your HOA or insurer know, and dry the wet area quickly. Wet drywall and framing need to dry within a day or two to avoid mold. We can take moisture readings and write up what we find.
Yes. We serve Conewago Township, McSherrystown, and Hanover.
That depends on your HOA documents and what part of the building is affected. We can provide a written scope and photos for you to share with the association.
A musty smell, stains, and soft drywall are common signs. Moisture readings can confirm whether the wall is still wet.
Usually, yes. We contain the work area with plastic and negative air so the rest of the home stays usable.
More answers on our mold FAQ page.
Call and tell us if you live in a townhouse or detached home, and where you found the problem.
