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Home records, explained › Who helps with a home › Radon testing

Radon testing

Measurement of radon in the home. Health Canada's guideline is 200 Bq/m³ over a long-term test of at least three months.

For the business side: the playbook for a radon tester. Page reviewed 30 Oct 2026.

Radon testing

When people need them

  • The offer and its conditions
  • The first 90 days

Records that matter to the work1

1 registerto check
2 momentsof 9
Listing openfree
  1. Thinking about it
  2. Getting ready to sell
  3. Searching and financing
  4. The offer and its conditions
  5. Closing and moving
  6. The first 90 days
  7. Making it yours
  8. Adding a unit or renting it out
  9. Living there

The records that matter to this work

An OfferDue report reads these for one address, with the source and date of every line.

Licences and registers to check

  • C-NRPP: find a radon professionalThe Canadian National Radon Proficiency Program certifies radon measurement and mitigation professionals; its search shows who holds which certification.Check the register →

Questions people ask before hiring

  • What does the report cover, and what does it leave out?
  • Which certification do you hold, and where can it be checked?
  • When does the written report arrive?
  • Is the report addressed to me, and may I share it?

Looking for radon testing?

Tell us what you need in a few lines and we reply by email. Businesses are only starting to be listed, so a request comes to us, not to any business.

Ask for helpOr email us

Radon testing listed on OfferDue

No businesses are listed here yet. Listing is open.

What a listing looks like
Your business nameRadon testingRegister checked
  • The towns you serve
  • Languages
  • What you specialise in

Your website

FreeIn the order checkedNever paid for

Each town's home team, with the local rules the work runs into, is on Who helps, town by town.

Listing on OfferDue is free and in the order businesses were checked, never paid for. Where a licence or register exists we check it before a listing shows. Get listed free: what a listing shows and what we check.

For businesses: ask for a free listing

The sign-up box isn't switched on yet. Email [email protected] with your business name, the towns you serve and your website, and we'll reply.

At the same moment

Public-record information, not legal, financial, insurance or inspection advice. A listing on OfferDue is not a recommendation; check licences and references yourself. Who does what in an Ontario offer.