Harwich officials are moving to insulate the town’s housing stock from the short-term rental market by proposing strict deed restrictions on new Accessory Dwelling Units (ADUs). During Wednesday’s Board of Appeals meeting, Chair Brian Sullivan detailed ongoing efforts to reconcile Harwich’s local bylaws with new state housing mandates. While the state has established a 900-square-foot threshold for ADUs, Harwich currently allows up to 1,000 square feet, leading the town to consider maintaining a "two-code" system to protect local standards on non-conforming lots. Sullivan emphasized the need for a residency requirement and a mandatory six-month minimum for rentals to prevent ADUs from becoming seasonal vacation units. If it's an ADU and they're restricted to six months or more to rent it out, that should be updated on their deed so when they're passing papers, everyone knows, Sullivan said.

The board also addressed a specific renovation challenge at 19 Shannon Road, where a proposal to modernize a long-neglected home collided with lot coverage limits. Representative Gus de Alcantara explained that the owners intend to square off a "jagged" foundation and enclose a breezeway to create a dedicated space for their daughter to practice music. I'd like to square out the foundation and start over with a new roof line and insulation to bring the house up to good standards, de Alcantara told the board. However, Sullivan noted the plans showed a building coverage of 15.5%, exceeding the 15% limit allowed under a special permit. I can't approve and stamp plans that show 15.5%, Sullivan cautioned, explaining that the extra half-percent would trigger a variance process requiring a proof of legal hardship.

To keep the project moving, the board suggested reducing the size of a proposed front porch by 50 square feet to bring the footprint into compliance. Member Julian noted that the change was necessary to avoid a more complex legal hurdle, stating that In order to approve it as is, you're talking a variance, not a special permit. We need the final documents to approve the documents. Clerk Dave Nutting noted that the project had already received clearance from other town agencies, reporting that Harwich planning, conservation, and water departments submitted comments indicating they had no concerns. Motion Made by B. Sullivan to continue Case 2025-14 to the April 30 meeting for revised plans; Seconded by John; Motion Passed 4-0. The board conducted an informal "straw vote" to signal their intent to approve the project once the square footage is adjusted.

In a broader effort to defend neighborhood character against "McMansion" style developments, Sullivan introduced a new framework for evaluating "substantial detriment." The new memo, vetted by town counsel, provides the board with a subjective analysis tool to weigh a project's scale against its surroundings. Julian pointed out the practical application in neighborhoods dominated by single-family ranches, noting that if a developer sought to build a two-and-a-half story McMansion in such an area, the board could now more clearly define that as a detriment to the neighborhood character. The meeting concluded with the adoption of a new administrative memo format designed by Sullivan and Zoning Enforcement Officer Rachel to streamline hearings by providing recommended findings to applicants in advance. Motion Made by B. Sullivan to approve the minutes from the previous meeting; Seconded by Julian; Motion Passed 4-0.