Guides

Plain-English deep dives — costs, materials, contractor vetting, permits, and warranty fine print.

• NRPP vs NRSB radon certification — what's the difference and which to hire

  NRPP and NRSB are the two main radon mitigator certification bodies in the US. Plain explanation of how they differ, which states accept which, and why it matters less than you think.

• Radon test cost — short-term, long-term, continuous monitor compared

  Radon testing options compared by cost and accuracy. When a $20 short-term kit is enough vs when you need long-term or a continuous monitor.