Straban Township takes in Hunterstown, the Granite Station Road area, and the corridor where Route 30 and Route 15 cross. It is a mix of farmland, older village houses, and newer subdivisions. Northeast of the borough along U.S. Route 30 and U.S. Route 15, about 10 minutes from our office.
In Hunterstown and along the older roads, houses tend to be older with stone or block foundations and small crawl spaces. Newer subdivisions have poured basements, many of them finished, and more HVAC ductwork running through attics and crawl spaces.
The farmland around many homes is open and flat, and heavy rain can take a while to drain from the soil around a foundation. That keeps basement walls damp after a wet week.
Quick answer
Straban Township has about 1,995 homes, and 50.9% were built before 1980 (49.5% across Adams County). FEMA records 84 flood insurance claims in ZIP 17325, 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 | Straban Township | Adams County | PA |
|---|---|---|---|
| Population | 4,892 | 106,115 | 13,018,639 |
| Housing units | 1,995 | 43,672 | 5,806,452 |
| Median year built | 1979 | 1980 | 1965 |
| Built before 1940 | 12.5% | 17.5% | 25.0% |
| Built before 1960 | 27.2% | 29.4% | 44.9% |
| Built before 1980 | 50.9% | 49.5% | 67.2% |
| Built 2000 or later | 22.9% | 22.3% | 14.3% |
| Single-family detached | 81.5% | 74.7% | 56.6% |
| Attached homes (rowhouse, twin, townhouse) | 7.6% | 9.3% | 18.8% |
| Mobile homes | 6.7% | 5.5% | 3.5% |
| Owner-occupied | 86.5% | 78.9% | 69.3% |
| Median home value | $318,500 | $268,500 | $254,500 |
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.
A burst of odor in the first minutes after the system kicks on usually comes from the coil, drain pan or nearby ductwork. The air handler is pushing air across a damp surface and into every room.
A puddle or rust line under the furnace or air handler points to a clogged condensate line or a cracked drain pan. That water soaks into the slab, framing or ceiling below.
Gray or black halos on the ceiling around registers can be dust, but they can also be condensation growth where cold air meets humid attic air. A quick wipe test tells you: dust smears, growth usually stains.
A house that feels cool but sticky has an air conditioner that is not removing enough moisture. Oversized systems cool fast and shut off before they pull water out of the air.
Dark patches on a poured basement wall after a wet week mean the soil outside is still saturated. In a finished basement, those patches are hidden behind drywall.
Newer houses here are built tighter than older ones, which saves energy but also keeps moisture from showers, cooking and people inside unless ventilation removes it. In the first year or two, a new poured concrete foundation and framing lumber also release a good deal of stored construction moisture. Without steady dehumidification, basement relative humidity in a new home can stay high even though nothing is leaking.
Mechanical systems are the other big factor. An air conditioner condenses water on its evaporator coil and sends it down a condensate line, and when that line clogs with slime or the pan cracks, water collects inside the unit and around it. Ducts running through a hot attic or a damp crawl space carry air colder than the dew point of the surrounding air, so the outside of the duct sweats onto insulation and framing.
The older village houses in Hunterstown and along the country roads deal with the ground instead. Stone and block foundations let soil moisture through, and flat, open land around many homes drains slowly after heavy rain. That keeps the soil against the wall wet for days, and the basement's humidity follows it.
Straban Township homes range from Hunterstown village houses to newer subdivisions off Route 30. The newer homes bring more HVAC and finished basement work; the older ones bring damp foundations.
Mold on air handlers, coils, and ducts in newer homes where the system runs through unconditioned space.
Newer homes often have air handlers in the basement or attic and ducts running through unconditioned space. We check the evaporator coil, drain pan and condensate line for the water source, then clean the parts with growth under negative pressure.
Finished basement work, from moisture mapping to drying.
Finished basements in the subdivisions tend to hide slow leaks and wet slabs. We map moisture along each wall and under the flooring before quoting, so only the wet sections come out.
Finding the source when there is a musty smell and nothing visible.
When a musty smell has no visible source, an inspection with a moisture meter and thermal camera usually finds it: a wet wall cavity, a sweating duct, or a crawl space under an addition.
Every service we offer is available in Straban Township.
We inspect the air handler, coil, drain pan and condensate line along with the basement and attic. Thermal imaging finds sweating ducts and wet wall cavities that a flashlight misses.
Mold on HVAC parts and in accessible ductwork is cleaned with the system off and the work area under negative air, so disturbed spores are captured by HEPA filtration instead of blown through the house. Building materials with growth are removed inside containment.
Framing, insulation and drywall are dried and checked with a moisture meter before anything is closed up or the system restarts. We confirm the condensate line drains freely as part of that check.
Our write-up covers what will hold indoor humidity in the 30 to 50% range EPA recommends: duct insulation, a clear condensate path, and dehumidification for the basement. Where the AC appears oversized, we note it so your HVAC contractor can evaluate it.
Open farmland around many homes drains slowly after heavy rain. We look at where water sits around the foundation and whether downspouts carry it far enough away.
For HVAC work, the system is shut down during cleaning, so we schedule around the weather where we can.
Yes, mostly where warm humid air meets a cold surface: the evaporator coil, the drain pan, and ducts running through a hot attic or damp crawl space. If you see growth on supply vents or smell mustiness when the system starts, the system should be inspected before it is cleaned.
Most basements take 3 to 5 days with commercial dehumidifiers and air movers, longer if the concrete or stone was soaked. Materials should be dry within 24 to 48 hours of the water stopping to keep mold from starting, which is why fast drying matters.
It is the small pipe that carries water away from your air conditioner coil, often to a floor drain or pump. When it clogs, water backs up into the drain pan and overflows into the unit, the floor or the ceiling below. Flushing it at the start of each cooling season prevents most of these leaks.
Often, yes, especially in summer. Concrete passes ground moisture even when it looks dry, and a basement that is cooler than the rest of the house will run higher humidity. A hygrometer costs little and tells you whether it stays below 60%.
Only if the mold is actually in the ducts, and only if the moisture source is fixed. Most odor starts at the coil, the drain pan or a damp space the ducts run through. Cleaning without fixing the water just resets the clock.
More answers on our mold FAQ page.
Tell us the age of the house and whether the smell gets worse when the air conditioning runs. That points us toward the right part of the house.
