A septic inspection is property due diligence, not a guarantee of future performance. The goal is to understand the system that serves the house, what can be observed today, and which uncertainties remain before closing.
First confirm septic versus sewer
Ask for the utility bill and check whether it includes wastewater service. Request the septic permit or approved site plan from DOH-Lee, look for lids or risers in the yard, and compare those records with the seller's disclosures. In UEP areas, also ask whether a Notice of Availability has been issued or a sewer connection is already planned.
Documents to request
- Original permit, approved plan, and final inspection record.
- Tank size, system type, and permitted design flow.
- Pump-out receipts and inspection reports.
- Repair, addition, modification, or abandonment permits.
- Maintenance contracts and operating permits for ATU or advanced systems.
- Any UEP letter, connection agreement, assessment information, or sewer permit.
Use the Lee County permit-record guide to organize the search. Missing paperwork does not automatically mean the system is defective, but it increases uncertainty and makes a physical inspection more important.
Arrange the inspection within the contract timeline
The EPA's home-buyer guidance recommends having the system inspected before purchase. Confirm in writing what the visit includes: tank access, sludge measurement, visible baffles and filter, pump and alarm checks when present, drainfield walkover, and written findings.
A visual inspection has limits. Buried, inaccessible, or unexposed components cannot be fully evaluated. A pump-out may be needed to see accessible tank components clearly, but pumping does not prove the drainfield will handle future household flow.
Questions the report should help answer
- Where are the tank, distribution components, and drainfield?
- Are lids, risers, baffles, filters, pumps, or alarms visibly damaged?
- How much sludge and scum are present, and is pumping recommended?
- Are there odors, surfacing wastewater, settlement, or unusually wet areas?
- Does the observed system appear consistent with available permit records?
- What could not be inspected, and what further evaluation is recommended?
Use local permitting information
DOH-Lee handles local septic permitting and inspections and publishes separate requirements for repairs, additions, abandonment, and advanced systems. A planned bedroom addition, pool, driveway, or other improvement may affect the system area even if the system currently works.
Schedule a documented septic inspection for the home sale early enough that the buyer, seller, lender, and contractor can address any follow-up before the inspection period ends.
Source review
Primary sources
Reviewed July 18, 2026. Agency requirements, fees, and project schedules can change; follow the linked agency page when it differs from this guide.