What is radon and when should you test?
What is radon and when should you test: plain-English orientation for UK residential Stakeholders in England and Wales.
Published: 18 Apr 2026 · Updated: 18 Apr 2026 · 9 min read
Property Passport UK
See this information for your own home
Free address search across England and Wales. No account needed.
19.4 million searchable properties. EPC, flood risk, sold prices, planning, and more in one structured record per home.
Summary
Readers often start from this question: What is radon and when should you test? Use it as a checklist with your conveyancer, lender, or surveyor so documents and permissions stay aligned.
Next steps
Write follow-up questions to your solicitor or surveyor in one email with references to any PDFs you already hold.
Scope
Property Passport UK helps you organise information; it does not replace regulated advisers.
Using Property Passport UK
Start from the address on [Property Search](/search). When you own or manage the home, [claim your Property Passport](/claim/start) and upload Documents with clear dates and sources. Browse more explainers in the [Property Guides library](/guides). This article is general information, not legal, tax, mortgage, or survey advice.
Essential Property Data guides
Related guides
Radon Gas in Homes, Which Areas Are Affected and What to Do
6 min readWhat is a RICS Red Book Valuation? When You Need One and What It Costs
6 min readAsbestos in the Home, Where It Hides, When It's Dangerous, What to Do
8 min readSubsidence, Causes, Signs, Insurance Implications and What Buyers Should Do
9 min readWhat is a Property Logbook, and Why Every Homeowner Should Have One
6 min readAbsolute Title vs Possessory Title vs Good Leasehold Title: What Each Means When Buying
8 min readSearch any property in England & Wales
EPC ratings, flood risk, sold prices, and planning data — free, instant, no login required.