The short version
- A perc (percolation) test in New Jersey typically costs about $500 to $1,500, depending on parcel size and conditions.
- It checks whether the soil drains well enough to support a septic system, which matters on rural land with no public sewer.
- If a parcel needs a full septic system, installation often runs $15,000 to $35,000.
- You do not need a perc test, survey, or appraisal to get a cash offer from us.
What is a perc test and why does it matter?
A percolation test measures how quickly water drains through the soil. On land without access to public sewer, which describes a lot of rural South Jersey, a septic system is the way to handle wastewater, and a septic system only works if the soil drains within acceptable limits. A passing perc test is often what separates a buildable lot from one that is not, which is why it affects value.
How much does a perc test cost in New Jersey?
For most parcels, expect roughly $500 to $1,500. The price depends on how many test holes are needed, the soil and site conditions, your county's requirements, and whether an engineering report is included. Larger or more complex sites cost more.
What if the land needs a full septic system?
If a buyer plans to build, installing a septic system commonly costs $15,000 to $35,000 depending on the system type and site. That cost is part of why raw, unsewered land is priced the way it is.
Do I need a perc test to sell my land?
No. You should not have to spend money to find out what your land is worth. We do our own research on the parcel, including whether it is on sewer or would need septic, and we make an offer based on that. If you already have a perc test or septic approval, great, that can help, but it is not required.
Sources & related
- Perc test and septic cost - Angi, HomeGuide, ATS Environmental (2026).
- Selling land in New Jersey: the complete guide
- Wetlands and unbuildable land