Bring the measurement record to the assessment
Begin with the full radon test report, the testing dates and a description of the room where the device was placed. Add any earlier testing or existing radon equipment you know about. Ask the professional which documents they need before visiting and whether the quote follows a site assessment. Keep a copy of the information you send so competing proposals can be based on the same description of the home. A photograph can help explain access or layout, but it does not replace the professional’s assessment.
Check the qualification for the work being proposed
Health Canada recommends a certified radon mitigation professional when addressing elevated radon and describes sub-slab depressurization as a common reduction method. Read its guidance on reducing radon, then ask the proposed contractor how their current C-NRPP certification applies to the work in the quote. Record the person’s name and the credential you checked. Do not infer a company’s qualification from this website, a logo, a quoted price or a claim that it serves your neighbourhood.
Ask for a proposal you can compare
A useful written scope describes what is being assessed, what system is proposed and what the contractor expects to install. Ask which parts of the proposal depend on findings during the visit and which are fixed. If two proposals use different approaches, ask each professional to explain why their approach fits the home. Keep that explanation with the quote. Comparing a single total without the proposed work makes it difficult to understand whether the bids cover the same project.
Walk through the installation and access plan
Ask the contractor to describe proposed equipment and pipe locations, access to the work area, the approximate sequence and how the house will be left when work is complete. Discuss practical questions such as finishes, storage, pets and working hours. Record any room or exterior area the team needs to enter. Ask who is responsible for moving stored items and for protecting or making good affected finishes. These are scope questions to settle with the contractor, not instructions to design or install a radon system yourself.
Separate included work from exclusions
Request a written list of exclusions and allowances. Ask how electrical work, additional sealing, access difficulties, changes to the proposed route and unexpected conditions are handled. Where another trade or approval is needed, identify who coordinates it and whether its price is included. Ask how a change is agreed before extra work starts. A clear process helps you compare proposals fairly and avoids assuming that a lower initial number includes every part of the finished installation.
Define the handover and follow-up evidence
Ask what operating instructions, equipment information and installation records you will receive. Discuss how performance is checked after installation and which follow-up measurement is included in the quoted service. Ask who supplies the device, who arranges collection or analysis, and who explains the report. If the quote includes a guarantee, read its conditions and the procedure for raising a concern. Do not treat a promised outcome as your measured result; keep the follow-up evidence with the original report.
Compare timing, payments and service arrangements
Put the proposed start date, installation duration, payment stages and service contact beside the technical scope. Ask what could change the schedule and when an updated plan would be communicated. Check what routine care or future service the proposal describes and how those services are priced. Keep emails and revised versions with the signed quote so you can see which terms were accepted. Choose using the complete scope and the answers to your questions, rather than a price ranking or an unsupported promise of savings.
Prepare your enquiry and next questions
Before requesting a quote, write a short summary: where the home is, the measurement period, the reported result, existing equipment and the questions you want answered. Include the documents you are comfortable sharing and ask how sensitive household details are handled. The radon quote enquiry form explains its processor and possible contractor sharing before you send it. You can also review the existing mitigation service page and the test-planning checklist to organize the conversation.
Continue planning
All radon guides · Request a radon quote
Official sources linked above checked 5 October 2026. Device instructions and the assessment of your own home guide the practical next steps.