The house
Start from a common job, then replace every figure with your takeoff. Changing foundation or fan never overwrites a rate you already typed.
Your crew rates
A $42/h tech loaded at 34% is $56.28. Quoting the raw wage on a published radon special is how a mixed slab-and-crawl job that looked fine turns into a loss after the first extra suction pit.
Your bid
- Footprint and suction
- Access and extras
- Crew hours
- Loaded labor
- Fan + kits + fees
- Travel + equipment
- Overhead
- Total cost
- Profit at this price
- Price per sq ft of footprint
- Effective hourly rate
- Walk-away price
Where the hours go
Where the cost goes
Transparent arithmetic from your own inputs. Starting hours and kit rates are common ballpark figures, not an industry standard, a radon design, or a health determination — replace them with your own takeoff.
Hand the customer a proposal
The price above is for you. This is the page you print or save as a PDF and give to the customer — your details, their details, the scope, the deposit split, and a line for them to sign. Your business details are saved on this device so you only type them once; the customer’s details are never saved.
Everything on the printed page is text you typed or a number this calculator worked out. It contains no warranty, lien, or cancellation wording — those depend on your jurisdiction and your contract, and this tool is not the place to invent them.
Common questions
Why does entering a 1,200 square foot footprint add nothing to the price?
Because 1,200 sq ft is the included footprint for a single-point system, and one suction point is also included. Neither adds a charge until you exceed it. A larger slab, or a floor plan that needs a second suction point to draw properly, is where the price starts moving — the square footage on its own does not.
Is $0.93 per square foot a useful number?
Only as a comparison against someone else’s per-square-foot quote. It is $1,121.98 divided by 1,200 sq ft, and it is dominated by fixed items: a $185 fan, $145 of pipe, $85 of travel, and five hours of loaded labor. Double the footprint without adding a suction point and the per-foot figure nearly halves while the work is virtually identical. Radon systems price by suction points and discharge routing, not by area.
What does the default system actually include?
A basement foundation, one suction point, a standard fan, and sidewall discharge — five hours of work all in, including one hour of site time. Roof discharge, a high-suction fan, a crawlspace membrane, a dedicated electrical circuit, firestopping, and a permit are all off by default. Sidewall discharge in particular is not permitted everywhere; check your local code before quoting it.
Is a post-mitigation radon test included?
No — it is an option and it is off on the defaults. That matters because a mitigation job is not finished until a follow-up test shows the level actually came down, and many jurisdictions and real-estate contracts require that document. If your quote is being compared against one that includes the retest, turn it on so you are comparing the same scope.