MAPC project share: Marblehead guidance shows preservation and clean-energy retrofits can align

MAPC staff on Sept. 17 presented draft guidance from a yearlong Marblehead Sustainable Heritage Project that aims to reconcile historic-preservation rules with local climate and energy goals.

Lindsay Randall, senior regional humanities specialist on MAPC’s arts and culture team, said the project’s core finding is that preservation and climate action are compatible: “there's always been this feeling at the local level that you can't really do historic preservation and actually also meet your climate goals,” Randall said, describing the team’s effort to center preservation values while expanding retrofit options. The project began in 2024 and concluded in August 2025.

The project team grounded its recommendations in three principles—reversibility, distinguishability and scale—and produced draft language and a comparative matrix municipalities can use to measure local bylaws against national standards. The work focused on four retrofit types: rooftop solar, air-source heat pumps, electric-vehicle charging and energy-efficient windows. The recommendations prioritize non-visible secondary elevations and reversible installations for solar; screening and locating heat pumps and chargers in less visible locations; limiting wall penetrations; and encouraging energy audits to determine when window replacement is necessary.

Sasha Shaidaroff, principal planner on MAPC’s clean energy team, emphasized practical details that emerged during walking tours and charrettes in Marblehead and neighboring Salem: “I never knew there was so much to know about windows,” she said, underscoring how seemingly small details affect both preservation and energy performance.

Presenters described a collaborative process with the town manager, local commissions (including the Old and Historic District Commission and the Green Marblehead Implementation Committee), and external partners such as Historic New England and the Newport Restoration Foundation. The team also tested draft language against practices in Salem, Nantucket and Concord to identify transferable approaches.

Committee discussion flagged demolition-delay periods as a policy lever for preservation. One committee member said a six-month delay is often “woefully inadequate” and suggested extending delays to 12–18 months to give communities time to pursue alternatives or relocation; presenters noted some towns already have longer delays and suggested documentation and deconstruction protocols to preserve architectural fabric.

The MAPC team said the draft guidance and comparative matrix will be shared on MAPC’s project landing page and in an upcoming blog post, and they plan a webinar with the Eastern Massachusetts Historical Commission Coalition on Oct. 21 to discuss historic-district bylaws and appeals processes. The project team recommended that municipalities adopt clear standards to reduce case-by-case disputes and create predictability for residents and review commissions.

Next steps: MAPC will circulate the draft matrix and language to interested communities and run the Oct. 21 webinar for historic-district practitioners and local officials.