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ZBA Approves Division of 74 Summerhill Avenue with Conditions on Grading and Runoff
Summary
The board granted a variance to split 74 Summerhill Avenue into two lots to build a new single‑family home on the created lot, conditioned on a grading plan, demonstration that slopes over 15% will not be disturbed (or engineered grading if they are), and measures to infiltrate roof runoff to the maximum extent practical.
Owner‑applicant Marcus Silva sought to divide 74 Summerhill Avenue (a ~14,090 square‑foot parcel with ~135 feet of frontage) into two lots and construct a new single‑family dwelling on the created lot. Planning staff noted the proposal is consistent with the single‑family character of the block but asked the applicant to supply a grading plan, information on proposed retaining walls and a stormwater‑management approach, since the architectural plans suggested a walk‑out basement that could involve significant grading.
Planning staff recommended the applicant demonstrate no existing 15%+ slopes would be disturbed; if grading in excess of that threshold is necessary, an engineered grading plan and site‑plan review by the Planning Board would be required. Staff also suggested capture and infiltration of roof runoff (dry wells, subsurface infiltration units or rain barrels) and additional tree plantings. The applicant agreed to request waivers and to submit a dimensionally correct set of architectural drawings and a limit‑of‑clearing plan.
Board members asked for a condition that roof runoff be infiltrated to the maximum practical extent and for the applicant to provide an engineered grading plan if slopes of 15% or greater are to be altered. Multiple board members said they could support the subdivision once the requested drainage and grading details were shown. The board approved the variance for Lot 2 (relief of 1,526 square feet from the 7,000‑square‑foot minimum) with staff recommendations and required waivers, and the applicant requested the waivers on the record.
