Warren County is New Jersey’s northwestern corner — bordered by the Delaware River to the west, Pennsylvania across the water, Sussex County to the north, and Morris and Hunterdon Counties to the east. The Kittatinny Ridge and the Ridge and Valley topography define its western sections, while the Great Meadows agricultural flats and rolling hills characterize its interior. The housing stock is predominantly rural and semi-rural, with smaller communities including Phillipsburg, Washington, and Hackettstown serving as the county’s population centers. Warren County sits squarely in EPA Radon Zone 1 — the highest-risk radon designation in the country.
Michael Del Greco has been inspecting Warren County homes since 1993.
Radon — Warren County’s Critical Priority
Warren County’s Ridge and Valley geology — including significant limestone formations and the Kittatinny Ridge — creates some of the highest indoor radon potential in New Jersey. EPA Zone 1 designation covers the entire county. Radon testing is not a recommendation Michael makes with a qualifier in Warren County — it is a requirement for any buyer who wants to know what they are moving into. He is a licensed NJ Radon Measurement Technician (License #MET10521, since 1993) and performs testing at every Warren County inspection. Buyers who skip radon testing in Warren County are accepting a known, measurable health risk.
Private Well and Septic
The majority of Warren County properties are served by private well and septic. Well water testing and a septic system inspection are fundamental due diligence for any Warren County property on private systems. Well water testing in Warren County’s limestone-influenced geology should include hardness, pH, bacteria, nitrates, and any contaminants relevant to local agricultural and industrial land use history.
Rural and Historic Properties
Warren County has a significant stock of older rural properties — historic farmhouses, stone homes, and properties with barns and outbuildings spanning multiple construction eras. Michael examines all accessible structures on the property, not just the main house. Rural properties with aging infrastructure, conversion histories, and private utility systems require more inspection time and more thorough evaluation than standard suburban homes.
Electrical and Plumbing
Warren County’s housing stock spans a wide range of eras. Mid-century homes in the county’s population centers may contain aluminum branch circuit wiring from the 1965–1975 window. Older rural properties present knob-and-tube wiring and aging galvanized supply plumbing. Missing GFCI protection is found throughout pre-1980 properties.
Oil Heat and Underground Storage Tanks
Pre-1985 Warren County properties with oil heat history are candidates for an underground oil tank scan. On the county’s larger rural lots, dedicated scanning equipment is often necessary to locate tanks that may have been abandoned and overgrown.
Schedule Your Warren County Home Inspection
Call (973) 812-5100 between 8 AM and 8 PM on business days, or 8 AM to 5 PM on weekends. Michael serves all Warren County municipalities.
Accurate Inspections, Inc. | 56 Woodland Drive, Woodland Park, NJ 07424 | Inspecting NJ Homes Since 1993 | NJ Licensed Home Inspector GI0121
