Three highways, three different excavation jobs.

Frequently asked — Lisbon

Five questions that come up before we quote a Lisbon job.

Who issues the septic permit in Lisbon?

The Northeast District Department of Health (NDDH), which covers Lisbon and 11 other towns. NDDH issues OWTS construction permits, conducts site evaluations, and signs off after the system is installed. The local Building Department handles the building permit; the two are pulled in parallel but evaluated separately.

What's the typical work split across the three Lisbon routes?

Route 12 is mostly commercial — pads, stormwater retrofits, utility trenching around Lisbon Landing. Route 138 is the residential cross-town spine — septic and foundations are the steady diet. Route 169 is the National Scenic Byway — rural lots with room to design properly, but byway-frontage gets handled with care.

Do I need a special permit for work on the Route 169 byway?

Not a separate permit, but byway frontage is treated more carefully by the town. Stone walls inside the byway corridor are protected. Clearing has to stop cleanly at property lines. The CT DOT handles anything in the road right-of-way; everything off the right-of-way is Lisbon P&Z.

Is there a wetlands setback on small Lisbon lots?

Yes — Lisbon Inland Wetlands & Watercourses Commission reviews any work within 100 feet of a regulated wetland or watercourse. Lots near the Shetucket and the Quinebaug catchments hit this often. We pull a wetlands review before quoting if the lot is within the buffer.

Will glacial till slow my Lisbon foundation dig?

Sometimes. Lisbon's residential terrain runs glacial till with intermittent ledge — common enough that we test-pit before committing to design depth. The till is strong bearing once you're past the topsoil; it's the surprise boulders and shallow ledge that drive the rock-removal contingency.