Well & Septic ProsPerc Test & Soil Evaluation Cost: What to Expect
A percolation test typically costs $250 to $1,000, and a full soil profile evaluation for a new system runs $500 to $1,500. The number of test pits and travel to the site drive most of the difference. On raw land this is the test that decides whether the lot is buildable, so it comes before anything else.
Who does this work
Licensed site evaluators. Our city pages for perc test & soil evaluation list only pros whose state license class actually covers it; they are licensed to run percolation tests and evaluate soils to determine what kind of septic system a site can support. That licensing is the difference between work that passes inspection and a truck with a tank on it.
What is a perc test and when do I need one?
A percolation test measures how quickly water drains through your soil, which determines whether a site can support a septic system and what type it has to be. You need one before building on an unsewered lot, before a new or replacement system is designed, and often before a lender will close on vacant land.
Before you hire
- Get at least three written quotes; pricing on this work varies widely by site conditions.
- Verify the license is active with the state. Every listing on this site links the official roster it came from.
- Ask for a current certificate of insurance.
- Ask what the quote excludes: haul-off, permits, and site restoration are the usual surprises.