Monmouth planning board delays decision on proposed event venue and cabins amid wetland, phosphorus and neighbor concerns

The Monmouth Planning Board on June 11 paused action on Red Top Drive LLC’s application to expand a historic seven-room bed-and-breakfast into a larger lodging and event facility after hearing technical and neighbor concerns about wetlands, stormwater phosphorus treatment and community impacts.

Planner Isabelle outlined the proposal for the board: the 12.73-acre property would retain the inn, add an event venue, construct three new cabins (described in the application as totaling five bedrooms between them), and create expanded parking areas totaling about 125 spaces. The planner said the project would affect a wetland complex and estimated roughly 3,127 square feet of wetland impact that would require a Natural Resources Protection Act (NRPA) permit from the state before any wetland disturbance.

The applicant team said it bought the property about a year ago and planned to restore the historic buildings and operate a private-event venue—primarily weddings and retreats—with a proposed cap of about 300 guests. "We brought the number down to 300 because ... that's kind of the sweet spot," an applicant representing the owners said. The project team said it expects parking and traffic management measures (including possible shuttle service and parking attendants for larger events) and noted the state fire marshal had reviewed interior occupancy standards.

But technical reviewers and the watershed-district peer reviewer, Bill Monagle, flagged questions about the applicant’s stormwater modeling and the treatment factors assigned to the proposed underdrain soil filters. Monagle said his volume-weighted calculation of the proposed underdrain soil filters produced an average treatment factor of roughly 0.33 rather than the 0.25 reported in applicant documents and that, based on his read, the applicant’s current plan could yield phosphorus removal rates below the 60% threshold typically required to qualify for a compensation fee. "I come up with a .33, not .25," Monagle said, and added that some resizing of treatment areas or additional underdrain filters could bridge the gap.

Neighbors and nearby property owners called attention to wildlife, nighttime lighting, amplified-music noise and the property’s relationship to a separate lake right-of-way. An abutter, Joel, described the area as one of the town's largest remaining forested blocks and warned of loss of habitat for foxes, bobcat and bears: "There's a big impact to wildlife and central Maine's losing what little habitat there is," he said. Others questioned whether the scale of the commercial event venue aligned with the town’s comprehensive plan for rural areas, which favors low-intensity, rural-compatible uses.

The hearing also revealed that the town issued building permits earlier this year for three cabins; planning staff acknowledged those permits should not have been issued before the planning review was complete. The cabins have been constructed but remain unoccupied pending the board’s review—the code-enforcement office acknowledged the permits were issued in error.

Given the outstanding technical questions (stormwater/phosphorus modeling, NRPA and DEP review for parking and drives that cross wetland areas), the board concluded it did not have sufficient information to approve or deny the full application at this meeting. The board invited the applicant to clarify whether it will pursue a phased approach—seeking approval for the three cabins separately from the larger event/parking and driveway components—and to provide updated site plans and verified calculations. The board set a follow-up meeting for July 9, 2026.