40
$850,000
3 bd · 2 ba · 3,279 sqft
21 East Street, Petersham, MA
James Ermini Attorney/Broker · New England Classic Homes

No listing photos
4
Beds
3.5
Baths
4,035
Sqft
1999
Year built
Range $594,741 – $753,831 · as of October 21, 2026
ATTOM automated valuation model · 55 published estimates over 6.8 years · shaded band is the model's own published low-to-high range
Highest reading $934,167 in October 2025; lowest $604,678 in January 2020. The vertical scale starts at the series' own low, not at zero — it is drawn to show movement, not absolute size.
$134,857
Estimated monthly payment
$4,389/mo
Loan amount $539,429. Estimate only — your actual rate and payment depend on credit, location, and lender.
2026 roll
Within 2 miles of this home: 7 parks and green spaces.
Place data from OpenStreetMap.
Pottapaug Pond
Carter Pond
Raccoon Hill Wildlife Management Area
Carter Pond Wildlife Conservation Easement
Quabbin Reservoir Reservation
Swift River Reservation
Moose Brook Wildlife Management Area
School ratings (A+ to F) from HJN community data.
Petersham Montessori Schools
PK-KG · Montessori
3 students · 1.3:1 student–teacher
Petersham Center
KG-6 · Regular · Petersham School District
142 students · 11.4:1 student–teacher
Eagle Hill School
8-12 · Special Education
213 students · 3.8:1 student–teacher
Ruggles Lane School
PK-6 · Regular · Quabbin School District
402 students · 15.6:1 student–teacher
Quabbin Regional High School
9-12 · Regular · Quabbin School District
545 students · 12.8:1 student–teacher
Quabbin Regional Middle School
7-8 · Regular · Quabbin School District
510 students · 14.7:1 student–teacher
Seven Hills/Stetson School
4-12 · Special Education
60 students · 6.7:1 student–teacher
MLS Property Information Network (MLS PIN)Some properties which appear for sale on this web site may subsequently have sold or may no longer be available.
40
$850,000
3 bd · 2 ba · 3,279 sqft
21 East Street, Petersham, MA
James Ermini Attorney/Broker · New England Classic Homes
Price Reduced35$698,500
4 bd · 2 ba · 2,304 sqft
35 West Street, Petersham, MA
James Rheault · Berube Real Estate
Price Reduced40$749,900
4 bd · 3 ba · 3,071 sqft
25 West Street, Petersham, MA
James Ermini Attorney/Broker · New England Classic Homes

