Home Lifespan Guide is published by Gesmine-Invest Limited (UK company 14120136), Hardy House, 269 Poynders Gardens, London SW4 8PQ, GB.
Every lifespan figure, replacement sign, and cost range on this site is sourced from manufacturer documentation, trade/industry associations, or widely-cited home-improvement cost guides — cited inline on each page. The "estimated remaining lifespan" tool on each page is a rule-of-thumb estimate, not a lab measurement or a substitute for a professional inspection.
This site does not sell products, accept sponsored placements, or provide personalized repair/replacement advice. For an actual inspection or repair decision, consult a licensed professional for your specific situation.