Calculator What type of foundation(s) do you have?* Basement Crawl Space Concrete Slab Second floor or higher multi-tenant complex Is your basement finished (partially or fully)?* Yes No How many living areas (Includes Bedrooms, living rooms, etc) are in your basement?*What is the square footage of your basement (estimated)?* Less than 1500 1500-2500 2500-4000 4000+ How many bedrooms are above your crawl space and/or concrete slabs?*When was the last time you tested for radon?* I have never tested for radon Under 1 year ago 1-3 years ago 3-5 years ago 5+ years ago What is your zip code?*HiddenCalculationsThe items below will not be shown to visitors until *after* they press "Submit".HiddenCalculate the Number From Foundation TypesHiddenCalculate the Number From Living Areas in BasementHiddenCalculate the Number From Sq FtHiddenCalculate the Number of Bedrooms Above Crawl / SlabHiddenGrand Total Δ