Before purchasing a home, it is critical to determine the condition of the home’s primary systems to identify potentially significant capital expenses. A standard home inspection covers hundreds of items; however, the following examples focus on the primary systems where significant repair or replacement costs are most frequently encountered.

Roofing

If the roofing material, flashing, or penetrations are no longer weather-tight, water infiltration can occur. Undetected leaks may have lead to mold growth, insect infestation, or structural deterioration. Depending on the duration of moisture exposure, these issues can manifest and escalate rapidly.

Except for the streaks of gloeocapsa magma (an algae), this 28 year old roof is in acceptable condition though nearing the end of its useful life. The roof should be monitored and a replacement budgeted for.

HVAC (Heating, Ventilation, and Air Conditioning)

Functional life expectancies vary by manufacturer & system type; knowing the age of the equipment helps predict its remaining service life. A failing boiler, furnace, water heater, or air conditioning units can lead to significant discomfort and high replacement costs.

• Average Lifespans: Heating systems typically last 15–25 years, while air conditioning systems generally last 15–20 years.

• Historical Context: Since approximately 60% of U.S. homes were built before 1980, much of the original mechanical equipment in the housing stock has reached or exceeded its intended lifespan.

This condensing unit is 50+ years old and no longer functions. Replacement will be required to have an operable air conditioning system.

Plumbing

As an example of specific material risks, homes constructed between the late 1970s and mid-1990s may contain Polybutylene (PB) piping. This material is known for premature failure when exposed to chlorine and other oxidants in public water supplies. Consequently, many insurance providers refuse to cover homes equipped with Polybutylene.

Electrical

Electrical systems in older homes provide further examples of potential safety or insurability risks:

• Fuses & Obsolete Panels: Homes built before the mid-1950s may still utilize fuse blocks rather than modern circuit breakers. Additionally, certain vintage panels (such as Federal Pacific or Zinsco/Stab-Lok) are documented to have high failure rates, often failing to trip during an overcurrent event.

• Solid Aluminum Wiring: Between the late 1960s and early 1970s, solid aluminum was often substituted for copper in branch wiring. The connections between aluminum wire and copper binding screws can become unstable over time, potentially causing shorts or fire hazards.

Due to the increased risk of fire, many insurance companies will not provide coverage for homes with solid aluminum wiring, fused panels, or specific recalled panel brands.

The items above are not exhaustive, but they represent findings that would entail significant expense. Ensure your investment is sound - email OSHI today to schedule a thorough professional inspection.