Title 5 Inspection: What Massachusetts Requires
Massachusetts Title 5 requires a septic system inspection when a property changes hands. The inspection must be performed by a MassDEP-certified System Inspector, and it must have been done within two years before the sale. That window extends to three years if the system has been pumped annually and the records exist.
A closing does not move forward without a passing report on file, so the inspection sits directly on the critical path of the sale. This is the one septic job with a hard deadline attached.
The two-year window runs backwards from the sale, not forwards from the inspection. An inspection done three years ago does not count, even if it passed. If the system has been pumped every year and you have the receipts, the window stretches to three years.
Order the inspection before you list, not after you have an offer. A failure found under contract puts a design, a permit and a construction schedule on the critical path of a sale that already has a closing date.
This applies the validity window in 310 CMR 15.000. It does not replace the inspection itself, which only a MassDEP-certified System Inspector can perform.
- 310 CMR 15.000: Septic Systems (Title 5) — MassDEP
- New septic system regulations to mitigate nitrogen pollution on Cape Cod — Commonwealth of Massachusetts