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Sunroom at 506 Ashwood approved with engineered drainage mitigation condition
Summary
The board approved a 337-square-foot sunroom at 506 Ashwood Road but required engineered mitigation for increased impervious area (an underground 'cult' system or equivalent) after neighbors raised historic drainage concerns.
Owners of 506 Ashwood Road and architect John Ferraro presented a plan to replace a rear deck with a 337‑square‑foot sunroom. The alteration increases the property's impervious coverage and prompted discussion about stormwater mitigation and downstream flooding.
Ferraro described the proposal as a conservatory on footings similar to the existing deck and said the owners were willing to work with engineering to install a subsurface mitigation system. He told the board the owners were prepared to provide construction drawings and engineering details for a 'cult' system and to connect the conservatory downspouts into that mitigation system. Ferraro summarized the scope: "the readies are wishing to put a 337 square foot sun room in the rear of their home." The board’s engineering discussion emphasized that removing other impervious elements or providing mitigation would be necessary because the net increase exceeds the board’s 200‑square‑foot mitigation threshold.
A neighbor, Alisa Kigner (501 Ashwood Road), spoke during public comment and described recurring flooding in the area and past damage to houses during heavy storms, asking the board to ensure drainage issues are addressed so the project does not worsen existing problems. The owners agreed to provide engineered mitigation details with the construction submission.
The board voted to approve the lot‑coverage variance conditioned on the submission of the engineered mitigation system and construction details; members noted the condition must be satisfied in permit filings.
