Lot Coverage Limits: Arlington vs Newton
How do lot coverage limits rules compare between Arlington, MA and Newton, MA?
Arlington has fewer restrictions than Newton.
Arlington, MA
Middlesex County
Maximum lot coverage is set by municipal zoning under MGL c.40A. Residential districts commonly cap coverage at 25-40 percent; urban lots allow more.
View full Arlington rules →Newton, MA
Middlesex County
Newton limits building lot coverage to 20-35% and total impervious surface to 40-50% depending on zoning district. SR1 has the most restrictive coverage at 20% building footprint.
View full Newton rules →Key Facts Comparison
| Fact | Arlington | Newton |
|---|---|---|
| Suburban typical | 25-40 percent | - |
| Urban metric | FAR often used | - |
| Impervious cap | Tied to MS4 stormwater | - |
| Includes | Buildings, pools, decks | - |
| Relief | ZBA variance | - |
| SR1 Building Coverage | - | 20% max |
| SR3 Building Coverage | - | 35% max |
| SR1 Impervious | - | 40% max |
| SR3 Impervious | - | 50% max |
| Permeable Credit | - | 50% counted |
Highlighted rows indicate differences between cities.
Arlington FAQ
Does the driveway count?
Some bylaws include paved driveways in impervious surface limits even if not in building coverage.
What if I exceed the cap?
You must seek a variance or reduce the footprint before the building department will issue a permit.
Newton FAQ
Does a deck count as coverage?
Decks taller than 18 inches above grade count toward lot coverage. Decks 18 inches or less and at-grade patios count only toward impervious surface if made of non-permeable materials.
Do permeable pavers help my coverage?
Yes. Newton credits permeable pavers at 50% toward impervious surface calculations, making them useful for tight lots near coverage limits.
Compare other topics
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