Grading & Drainage: Cambridge vs Lowell
How do grading & drainage rules compare between Cambridge, MA and Lowell, MA?
Lowell has fewer restrictions than Cambridge.
Cambridge, MA
Middlesex County
Cambridge requires grading and drainage plans with building permits to ensure runoff is managed on-site and does not adversely affect neighbors or the municipal storm drain system.
View full Cambridge rules →Lowell, MA
Middlesex County
Lowell grading work must comply with 780 CMR, direct runoff away from neighbors and the public right-of-way, and obtain a stormwater permit for disturbances over 5,000 square feet.
View full Lowell rules →Key Facts Comparison
| Fact | Cambridge | Lowell |
|---|---|---|
| Permit review | ISD and DPW | - |
| Runoff | Managed on-site | - |
| Neighbor harm | Prohibited | - |
| Sump pump to sewer | Prohibited | - |
| Downspouts | To infiltration preferred | - |
| Code reference | - | 780 CMR Appendix J |
| Foundation slope | - | 6 inches in 10 feet |
| Stormwater trigger | - | 5,000 sq ft |
| Wetlands buffer | - | 100 feet |
Highlighted rows indicate differences between cities.
Cambridge FAQ
Can I regrade so water flows to my neighbor?
No, creating adverse drainage onto neighboring property violates city rules and exposes you to civil liability.
Where should my sump pump discharge?
To a lawn, drywell, or approved storm system; never to the sanitary sewer in Cambridge.
Lowell FAQ
Can I raise my yard grade with fill?
Yes in most areas, but not if it diverts water onto neighbors or sits within a wetland buffer or floodplain without permits.
Do I need a permit to level my backyard?
Small leveling under 5,000 square feet generally does not need a permit, but you still must control sediment and runoff.
Compare other topics
See how Cambridge and Lowell compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool