Our design generator produces an estimated septic design for a parcel at no cost: tank capacity, treatment level, dispersal method, and drainfield area, each referenced to the applicable code tables and informed by what is actually recorded on systems nearby. It is estimated, NOT a county-stamped document.
The output is an estimate built from public records and code tables. It is not a permit submittal, it is not soil-tested, and it is not stamped. What it is good for: pricing conversations with installers, sanity-checking a quote, understanding what a replacement on your lot would probably involve, and giving a professional designer a concrete starting point instead of a blank page.
We hold more than 5.2 million recorded septic documents across 31 states. When the generator sizes a system, it can look at what was actually permitted and installed on comparable parcels nearby, which keeps the estimate grounded in local practice rather than a national average.
Every design our generator produces is estimated, NOT a county-stamped document. It is a starting point for planning and pricing, not a permit submittal, and final sizing is always set by your county health department and the professional who stamps the plans.
Generate a free septic design Find your county's septic records
Yes. Generating and viewing a code-referenced septic design for a parcel, tank sizing, drainfield area, dispersal method and setbacks, costs nothing on our site.
No. It is estimated, NOT a county-stamped document. Permits require the county's own process, usually a soil evaluation on site and plans from whoever your jurisdiction authorizes to prepare them.
It is referenced to the applicable code tables and informed by recorded systems on comparable parcels nearby, drawn from our corpus of more than 5.2 million recorded septic documents.
Use it to get grounded quotes from installers, to understand a replacement before you are quoted for one, or to hand a professional designer a concrete starting point.
Guide last reviewed 2026-09-07.