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Maggie Li

I'm Maggie Li, a Newton, MA real estate agent serving first-time buyers, luxury clients and sellers across Greater Boston in English & Mandarin. Let's find your home.

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  • 1229 Centre Street, Newton Centre, MA, USA
  • (774) 222-0952
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William Raveis

© 2026 Maggie Li. All rights reserved.
Equal Housing Opportunity. Information deemed reliable but not guaranteed.

  1. Home
  2. Listings
  3. 20 John St, Chelsea, MA 02150
Active
41 Days on market
20 John St Chelsea — Photo 1 of 31

20 John St Chelsea — Photo 1 of 31

$999,999

20 John St, Chelsea, MA 02150

Chelsea, MA 02150

Beds

5

Baths

2

SqFt

4,797

Style

Single Family

Built

1915

If you’ve been looking for unmatched scale and solid historic character minutes from Downtown, 20 John Street delivers on every level. If you want tiny, cramped rooms, this isn't the house for you-every single space here is oversized. Finished attic with clean hardwood floors, spacious bedrooms, high ceilings, classic crown moldings, and plenty of natural light. the property features a foyer with vintage stained glass . Beyond the massive interior footprint, a deep paved driveway and a rare, 2-car garage solve all your families parking needs. This is an expansive lot with solid bones and unmatched space-to-value for the area.

Market Value Analysis

This Property
Size (SqFt) →Price →
This Property$208/sqft
Local Avg (Chelsea)$383/sqft
46% BelowMarket Average

* Analysis is based on 19 actively listed and recently sold comparable properties strictly within Chelsea, MA.

Property Details

Financials

Original Price$999,999
Annual Taxes$7,716

Parking

Garage2
Off-Street12

Interior Specifications

Total Rooms8
FireplacesNone
FlooringWood, Tile
BasementFull

Climate & Utilities

HeatingBaseboard, Natural Gas
CoolingWindow Unit(s)
WaterPublic
SewerPublic Sewer

Building & Exterior

ConstructionStone
RoofShingle
FoundationStone
ZoningR2

Property & Lot

Acres0.15
SqFt Lot6,376
Lot Features--

Amenities & Appliances

Gas Water Heater

Geography

Population

39,908

U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)

Median Household Income

$72K

U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)

Renter-Occupied Homes

74.0%

U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)

New Construction Permits — Suffolk County

2,527 housing units permitted in the last 12 months (+37% vs the prior 12 months) — 2,269 in 5+ unit buildings

U.S. Census Bureau, Building Permits Survey (through Jun '26)

ADU Potential

Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 4,797 sq ft principal dwelling). Lot size: 6,376 sq ft.

Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.

Full Chelsea, MA market report ZIP 02150 market data
Listing Provided By

Listing Agent: Kevin Alen

Listing Office: Cameron Prestige, LLC

MLS® Number: 73547861

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