Observed arrival · 2026-10-16
YearBuiltGuide’s House Age Decoder
A guide and decoder for likely hazards and materials in U.S. homes, based on their year of construction.
- For
- U.S. homebuyers and homeowners checking a house’s age-related risks
- Worth noticing
- Its decade table spans the 1900s through the 2000s and groups hazards across materials, plumbing, electrical systems, and buying.
Field notes
The decade table runs from the 1900s through the 2000s and maps risks across hazardous materials, plumbing and water, electrical systems, and buying. Guide links cover identification and decision points, including PB2110 markings on polybutylene pipe, sewer-camera scopes for Orangeburg pipe, and why suspected asbestos popcorn ceilings should be tested before scraping. The page says state selection is optional and points readers to official sources; the captured extract does not include a decoded result.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue