Statute caps local minimum lot sizes and outlines strict septic waiver process
Aug 11, 2026
Presenters explained statutory caps on minimum lot sizes (20,000 sq ft in growth or non-growth areas without public sewer; smaller caps where public water/sewer exist) and described a strict state waiver process for lots that cannot meet septic standards; septic design and soil scientists handle technical review.
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Honora Whitman told the planning board that the statute sets ceilings for how large a town can make its minimum lot-size requirements. She said a growth area without public water and sewer may not set a minimum lot size greater than 20,000 square feet, while areas with public water and sewer can have smaller minimums (for example, growth areas with water and sewer may use a 5,000-square-foot cap).
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