Flood Zones: Newton vs Somerville
How do flood zones rules compare between Newton, MA and Somerville, MA?
Newton and Somerville have similar restriction levels.
Newton, MA
Middlesex County
Newton participates in the NFIP with FEMA-mapped flood zones along the Charles River and Cheesecake Brook. Construction in AE zones requires lowest floor elevated 2 feet above base flood elevation.
View full Newton rules →Somerville, MA
Middlesex County
Parts of Somerville near the Mystic River and Alewife Brook are FEMA Zone AE. New construction in the floodplain must elevate 2 feet above BFE.
View full Somerville rules →Key Facts Comparison
| Fact | Newton | Somerville |
|---|---|---|
| Program | FEMA NFIP | - |
| FIRM Update | 2021 | - |
| Freeboard | 2 ft above BFE | 2 feet above BFE |
| Substantial Improvement | 50% value | - |
| Major Flood Area | Charles River | - |
| Zones present | - | AE and X-shaded |
| Substantial improvement | - | 50 percent rule |
| Insurance | - | Required in SFHA with mortgage |
| Key areas | - | Mystic River, Alewife Brook, Assembly |
Highlighted rows indicate differences between cities.
Newton FAQ
How do I check if my property is in a flood zone?
Use the FEMA Flood Map Service Center (msc.fema.gov) or contact Newton ISD. Properties in AE zones require flood insurance if mortgaged and special elevation requirements for construction.
What is Newtons freeboard requirement?
Newton requires 2 feet of freeboard above the FEMA Base Flood Elevation for lowest floor of new construction, which exceeds the federal 1-foot minimum.
Somerville FAQ
How do I find out if my Somerville property is in a flood zone?
Enter your address at the FEMA Map Service Center (msc.fema.gov) to pull the FIRM panel and Base Flood Elevation, or call Somerville Planning for a letter.
Can I finish my basement in a flood zone?
Enclosed space below BFE must be used only for parking, access, or storage and needs flood vents. Habitable finishes below BFE are prohibited for substantial improvements.
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