Grading & Drainage: Newton vs Somerville
How do grading & drainage rules compare between Newton, MA and Somerville, MA?
Newton and Somerville have similar restriction levels.
Newton, MA
Middlesex County
Newton requires grading permits from DPW for earthwork over 50 cubic yards or changes affecting adjacent properties. Positive drainage away from buildings and neighboring lots is mandatory.
View full Newton rules →Somerville, MA
Middlesex County
Grading over 50 cubic yards or that changes drainage patterns requires DPW review in Somerville. Roof and yard drainage may not discharge to neighbors.
View full Somerville rules →Key Facts Comparison
| Fact | Newton | Somerville |
|---|---|---|
| Permit Threshold | 50 cubic yards | - |
| Permit Fee | $150-500 | - |
| Min Slope | 5% for 10 ft | - |
| Retaining Wall Permit | Over 4 feet | - |
| Dewatering Limit | 10,000 gal/day | - |
| Permit trigger | - | 50 cubic yards or drainage change |
| Roof leaders | - | To storm or infiltration |
| Neighbor discharge | - | Prohibited |
| Retaining wall permit | - | Over 4 feet |
| Sump to sewer | - | Federal CWA violation |
Highlighted rows indicate differences between cities.
Newton FAQ
Can I regrade my yard without a permit?
Minor landscaping under 50 cubic yards is usually exempt, but any regrading that alters drainage patterns affecting neighbors can still result in complaints and enforcement regardless of volume.
My neighbors grading is flooding my yard. What can I do?
File a complaint with Newton DPW Engineering. Massachusetts common law and Newton ordinances prohibit redirecting stormwater onto adjacent properties.
Somerville FAQ
Can I regrade my yard to drain away from my foundation?
Yes, as long as the new flow stays on your property or goes to the street or storm drain. You cannot redirect water onto a neighbor's lot without permission.
Do I need a permit to build a small retaining wall?
Walls up to 4 feet typically need only zoning clearance. Walls over 4 feet (measured from bottom of footing) need a building permit and engineered plans.
Compare other topics
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