Menallen Township sits in the heart of the Adams County fruit belt, north of Biglerville and around Aspers. Orchards, farm buildings, and packing houses surround homes that are mostly newer than people expect. North on PA Route 34 through Biglerville, about 20 to 25 minutes from our office.
Only about 18% of homes were built before 1960, and the median home dates from 1987, newer than the county median of 1980. Most houses are detached homes from the last 40 years, built among orchards, with basements, crawl spaces, and central air.
Around them are barns, sheds, shops, and the packing and storage buildings that the fruit business depends on. Fruit is stored cold and humid on purpose, and buildings that hold that much moisture need more attention than a house does.
Quick answer
Menallen Township has about 1,549 homes, and 42.5% were built before 1980 (49.5% across Adams County). FEMA records 7 flood insurance claims in ZIP 17304. 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 | Menallen Township | Adams County | PA |
|---|---|---|---|
| Population | 3,751 | 106,115 | 13,018,639 |
| Housing units | 1,549 | 43,672 | 5,806,452 |
| Median year built | 1987 | 1980 | 1965 |
| Built before 1940 | 13.9% | 17.5% | 25.0% |
| Built before 1960 | 18.2% | 29.4% | 44.9% |
| Built before 1980 | 42.5% | 49.5% | 67.2% |
| Built 2000 or later | 32.7% | 22.3% | 14.3% |
| Single-family detached | 84.6% | 74.7% | 56.6% |
| Attached homes (rowhouse, twin, townhouse) | 1.2% | 9.3% | 18.8% |
| Mobile homes | 13.6% | 5.5% | 3.5% |
| Owner-occupied | 89.8% | 78.9% | 69.3% |
| Median home value | $262,100 | $268,500 | $254,500 |
Named events with claims in Menallen Township: Tropical Storm Bill 2015 (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.
Boxes, crates, and paper stored in cool, damp spaces show mold before walls or framing do. Spots or a soft, damp feel are early warnings.
Farm offices and break rooms inside or beside storage buildings often share their humidity. Drywall near the floor or on walls next to cold rooms shows it first.
A smell that comes on when the central air starts means the air handler or ducts are pulling damp air from a basement or crawl space.
Supply ducts that drip in a basement or crawl space are wetting the joists and insulation around them.
The township has 4 flood insurance claims on record, so some low spots do take on water. A stain on the drywall or a damp carpet edge after heavy rain needs drying right away.
Fruit storage depends on cold, humid air, which is exactly what mold likes. Wood framing, drywall, insulation, and cardboard in or near those spaces stay damp, and mold grows where air moves least. Offices and work areas that share walls or air with storage pick up the same humidity.
Most homes in Menallen Township are newer than the county average, with a median build year of 1987. Many have central air with ducts and an air handler in the basement or crawl space. When that space runs humid, the ducts sweat and the system can spread musty air through the house.
Flooding is not a major pattern here, with 4 claims totaling about $69,000 over the years, but it does happen in low spots. Any water that gets in needs to be dried within a day or two to keep it from becoming mold.
Menallen Township calls come from two places: newer homes among the orchards, and the farm, packing, and storage buildings around them.
Packing, storage, and farm office buildings with high humidity.
Packing, storage, and farm office buildings hold a lot of moisture, and mold grows on wood, drywall, and cardboard in the dampest corners. We contain the affected section so the rest of the building can keep working, remove or clean what has grown, and look at how humid air is moving through the space.
Basements under newer orchard-country homes.
Basements under newer homes still run humid in summer. We remove moldy finishes and storage under containment, clean the framing, and set up a dehumidifier that drains on its own.
Ducts and air handlers in damp basements and crawl spaces.
When ducts and an air handler sit in a damp basement or crawl space, they can pull musty air through the house. We clean the air handler and accessible ducts and deal with the moisture in the space around them.
Every service we offer is available in Menallen Township.
We take humidity and moisture readings across the building or house, and note where cold surfaces, poor air movement, and damp materials meet.
The affected section is closed off with plastic and negative air pressure so the rest of the building or house stays in use.
Moldy drywall, insulation, and contents are removed, and framing and hard surfaces are HEPA vacuumed and cleaned. In homes, the air handler and accessible ducts are cleaned if they are affected.
We recommend dehumidification, air movement, and insulation of cold ducts or pipes based on what the readings show, so the space stays dry after we leave.
For farm and storage buildings, we plan around your season and operations, and we agree up front which sections can be closed off and when.
For homes, we check whether a shop, garage, or outbuilding shares air with the house, since that can carry moisture and smells inside.
In many cases, yes. We contain the affected section with plastic and negative air pressure so the rest of the building can keep running, and we schedule the work around the season with you. The plan depends on what the space is used for and what the growth is on.
Yes. Menallen Township, including Aspers and the orchard roads north of Biglerville, is part of our service area.
It can be. Workers spend hours in those spaces, and mold damages wood, drywall, and stored materials. It can also spread to offices or homes that share air with the building. Cleaning it and controlling the humidity protects both the building and the people working in it.
Only after the moisture source is fixed. If the basement or crawl space around the ducts is still damp, cleaning the ducts will not last. We look at the air handler, the ducts, and the space around them together.
If the building is attached or shares air through a breezeway, garage, or ductwork, yes. A detached barn is much less of a concern for the house, though it can still affect anything stored inside it.
More answers on our mold FAQ page.
Tell us whether the problem is in the house or a farm or storage building, and what the space is used for. That shapes the plan.
