Dedham is compliant with the MBTA Communities Act. The town adopted zoning that meets the state's multifamily requirement near its commuter rail stations on the Franklin Line, and the state has determined Dedham compliant per the EOHLC approval list. The state required Dedham to zone for a capacity of 1,569 units. For owners and investors, it can expand what you are allowed to build on a Dedham parcel near transit.
What is Dedham's MBTA 3A zoning?
Dedham meets the MBTA Communities Act through zoning that allows multifamily housing by right near its commuter rail stations on the Franklin Line, which the state's Executive Office of Housing and Livable Communities has determined compliant. As a commuter rail community, Dedham was required to zone at least 50 acres for a capacity of 1,569 multifamily units, equal to 15 percent of its housing stock. The overlay zoning means qualifying projects no longer need a special permit in eligible areas near the three Dedham commuter rail stations.
Which parts of Dedham are in the district?
The Dedham district focuses on parcels near the three commuter rail stations on the Franklin Line: Endicott, Dedham Corporate Center, and Islington. Because the boundaries are parcel specific and some lots are excluded, the only reliable way to know if a given property is in the district is to check it against the town's adopted zoning map. Send us the address and we will look it up.
What can you build under it?
Inside the Dedham district, multifamily housing is allowed by right at the densities the district sets. That can turn a parcel that previously allowed only a single home or a two family into one where a small multifamily building is permitted without a special permit. The exact unit count depends on the lot and the district rules, so each parcel needs its own analysis. Dedham's zoning allows a minimum gross density of 15 units per acre within the district.
What does this mean for Dedham owners and investors?
If your parcel sits in the Dedham district, your development potential and therefore your value may be higher than the old zoning implied. For investors, Dedham's by right multifamily potential represents an opportunity in a commuter rail market with strong access to downtown Boston. For sellers, it is worth knowing whether your lot carries this upside before you price it, since it can change what a buyer will pay. For owners holding long term, the added development rights can sit on your balance sheet as future optionality. We run that analysis before clients buy, sell, or hold. For a deeper look at how zoning changes affect value, see our MBTA 3A property value analysis.
How do I find out if my Dedham property qualifies?
Send us the address and we will confirm whether it falls in the district and what that allows, usually the same day. Or check it yourself against the town's adopted zoning map and look up whether your parcel is inside a district boundary.
Dedham 3A detail
| Dedham 3A detail |
Figure |
| MBTA community category |
Commuter Rail (Franklin Line) |
| Required multifamily zoning capacity |
1,569 units, minimum 50 acres |
| Capacity as share of housing stock |
15 percent |
| Transit area requirement |
At least 75 percent of district within station areas |
| Commuter rail line |
Franklin Line (Endicott, Dedham Corporate Center, Islington stations) |
| State compliance status |
Compliant, on the EOHLC approval list |
| Typical current multifamily price point |
$867,329 (MLS PIN median sale, multi family, last 12 months, n=8) |
Capacity figure from EOHLC official June 2025 capacity calculations. MLS PIN data reflects the trailing 12 month median sale price for multi family properties in Dedham, MA.
Written by Ethan Piani-Hohmann, broker and founder of PH Realty Group, a Greater Boston brokerage focused on multifamily and investment property. Last updated June 2026
