50 River St, Acton, MA 01720 Property Records

Middlesex County and Acton Town property record for 50 River St, Acton, MA 01720 · Last verified July 2026

Property Summary

Property Type	Single Family Home
Details	4 bd · 1.5 ba · 1,210 sqft · built 1900
Lot Size	0.311 acres (13,536 sqft)
Owner	Individual Name on File
Last Sale	$380,000 (May 2005)
Tax Bill	$8,088 (2025)
Deeds & Mortgages	Sep 2018 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`ACTO M:00H3A B:0043 L:0000`

Property Details

APN / Parcel Number

Primary APN	`ACTO M:00H3A B:0043 L:0000`

Interior

Bedrooms	4 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	1,210 sqft Living Area
Gross Area	2,322 sqft

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1900
Architectural Style	Historical
Exterior Material	Wood Siding
Roof Type	Gable
Roof Material	Asphalt
Lot Area	13,536 sqft (0.311 acres)

Utilities, Heating & Cooling

Heating System	Steam
Heating Fuel	Oil

Location & Zoning

Street Address	50 RIVER ST
City	ACTON
State	MA
Zip	01720-3603
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Block	43
Jurisdiction	ACTON MA
Township / Civil Division	ACTON
Census Block Group	1
Census Block	1035
Census Tract	363104

Owner

Source: Middlesex County and Acton Town records · APN ACTO M:00H3A B:0043 L:0000

Assessment roll updated April 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on File
Mailing Address	50 RIVER ST, ACTON, MA 01720-3603
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	May 26, 2005 · Amount on Record
Deed Sale	May 26, 2005 · Amount on Record
Deed Document Number	2005107174
Deed Book / Page	45260 / 192
Record Updated	Sep 20, 2026

September 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ACTON MA
Property Address	50 RIVER ST, ACTON, MA 01720-3603
Transaction Type	Mortgage
Record Updated	Feb 07, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	71582-455
Date	Sep 06, 2018
Book Page	71582/455
Instrument	137669

Lender

Name	HARVARD UNIVERSITY EMPLOYEES CU
Type	Credit Union

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	Sep 01, 2038

Tax Assessment & Valuation

Source: Middlesex County and Acton Town records · Assessment roll updated April 14, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Middlesex County
County Subdivision	Acton Town
Unified School District	Acton-Boxborough Regional School District (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$8,088.00 (+2.87%)	$471,600 (-) Land $267,600 Building $204,000	$605,910 (-5.43%)
2024	$7,862.00	$471,600 Land $267,600 Building $204,000	$640,680

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Middlesex County (25017C), updated September 10, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No
Nearest Special Flood Hazard Area	Zone AE, within 100 ft

Wildfire

Wildfire Risk	Low above 5% of the US · above 11% of Massachusetts
Wildfire Likelihood	Less than 1 in 10,000 per year
Exposure	Direct burnable vegetation at the parcel

Values are read at the parcel center point; lenders make the official flood determination.