Guides
Start with the right office
Perc tests and soil evaluations are local. The rules, forms, and who can perform the work often change by county or health district.
Try a ZIP like 30303, “Travis County” or “Columbus, OH”
Septic basics
What is a perc test?
What a perc test is, how soil evaluations work for septic systems, who can do them, and what to check before buying land for a home.
Read the guide →Septic setbacks and lot size
Learn how septic setbacks and minimum lot size affect buildable land, permits, reserve area, and what to check before buying land for a septic system.
Read the guide →Septic Basics
Septic costs
Buying land
Septic options
Septic permits
Septic systems
Perc Tests
When to schedule a perc test (and seasonal limits)
Learn the best time to schedule a perc test or soil evaluation, why spring matters, and how local wet-season or winter limits can delay plans.
Read the guide →How to prepare for a perc test
Learn how to prepare for a perc test: who to call, what records to gather, how to mark the lot, and when to schedule for septic approval.
Read the guide →