YearBuiltGuide offers general information about the materials and risks that are common in US homes of different eras. It does not replace a home inspection or advice from a licensed professional, and it does not tell you what is actually in your house.
Not an inspection
The House Age Decoder and every article describe probabilities based on a build year and on public sources. Only a qualified professional who examines the property can tell you what materials and conditions are present. Renovations, repairs and regional practices can make any house different from the typical pattern.
Asbestos and lead
Do not cut, sand, scrape, drill, sweep or otherwise disturb materials you suspect contain asbestos, and do not take samples yourself. EPA advises that improper sampling can be more hazardous than leaving the material alone and that testing, repair and removal should be done by trained, accredited professionals (EPA). The same caution applies to old paint that may contain lead: renovation that disturbs it should follow lead-safe practices and use certified professionals where required.
Electrical work
Do not attempt electrical work based on this site. Evaluation and repair of wiring, panels and connections, including knob-and-tube and aluminum wiring, should be done by a licensed electrician. The author’s background as an electrician does not make this site a substitute for one in your state.
No legal, insurance or financial advice
Nothing here is legal advice, including about disclosure obligations, claims or lawsuits, and nothing here is insurance or financial advice. Ask a licensed attorney, insurance agent or other qualified professional.
Sources
Dates and figures are linked to their sources. Sources can change, and we may make mistakes; if you find one, please let us know. See the Sources page for the complete list.