We take what are known as “samples”, and each sample is priced at $150.00. We also require a minimum of two (2) samples per test, so your minimum cost would be $300.00 plus HST (13%). For more thorough testing results, we recommend that each floor of your home is tested and for most homes this would include a basement, main floor and a second floor. We start with an outside air quality reading, so most homes would benefit the most by having 4 samples taken.