601 Old Stone Brook, Acton, MA 01718 Property Records

Middlesex County and Acton Town property record for 601 Old Stone Brook, Acton, MA 01718

Property Summary

Property Type	Condominium
Details	3 bd · 2.5 ba · 1,630 sqft · built 1972
Lot Size	6.31 acres (275,244 sqft)
Owner	2 Company Names on File
Last Sale	$550,000 (Jan 2026)
Tax Bill	$7,796 (2025)
Deeds & Mortgages	Jul 2025 Line of Credit Jan 2026 Sale & Mortgage + 4 more
Flood Zone	Zone X (minimal risk)
APN	`ACTO M:00B4 B:0112 L:0079`

Property Details

APN / Parcel Number

Primary APN	`ACTO M:00B4 B:0112 L:0079`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Stories	2 Stories
Building Area	1,630 sqft Living Area
Gross Area	2,517 sqft

Exterior

Year Built	Built 1972
Effective Year Built	Effective 1972
Architectural Style	Other
Exterior Material	Wood Siding
Roof Type	Shed Roof
Roof Material	Asphalt
Lot Area	275,244 sqft

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Forced Air with A/C
Heating Fuel	Gas

Location & Zoning

Street Address	601 OLD STONE BRK
City	ACTON
State	MA
Zip	01718-1017
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Condominium
Local Zoning Code	RA
Legal Block	112
Legal Lot Number	79
Jurisdiction	ACTON MA
Township / Civil Division	ACTON
Census Block Group	1
Census Block	1001
Census Tract	363106

Owner

Source: Middlesex County and Acton Town assessment roll, as of April 14, 2026

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

Owner of Record	2 Company Names on File
Mailing Address	601 OLD STONE BRK, 79, ACTON, MA 01718-1017
Owner Type	Company
Vesting	Trust, Revocable Trust

Deeds, Mortgages & Sale History

Date	Document
Jul 9, 2025	Deed of Trust, Mortgage · Line of Credit BROOKLINE BANK
Jan 16, 2026	Quit Claim Deed, Transfer · Conventional Mortgage GUARANTEED RATE AFFINITY LLC
Jun 20, 2019	Deed of Trust, Mortgage · Balloon Mortgage EASTERN BANK
Sep 9, 2019	Condominium Deed, Transfer · Conventional Mortgage STEARNS LNDG
Jun 20, 2017	Deed of Trust, Mortgage · Conventional Mortgage BANK OF AMERICA
Jan 26, 2017	Quit Claim Deed, Transfer PROSPECT MORTGAGE LLC

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jan 16, 2026 · Amount on Record
Deed Sale	Jan 16, 2026 · Amount on Record
Prior Sale	Sep 9, 2019 · Amount on Record
Deed Book / Page	85134 / 266
Record Updated	Sep 20, 2026

July 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ACTON MA
Property Address	601 OLD STONE BRK, ACTON, MA 01718-1017
Transaction Type	Mortgage
Record Updated	Apr 2, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	084332-555
Date	Jul 9, 2025
Book Page	84332/555
Instrument	79189

Lender

Name	BROOKLINE BANK

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	481 Months
Due	Aug 1, 2065

January 2026: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ACTON MA
Recording Date	Jan 16, 2026
Property Address	601 OLD STONE BRK, ACTON, MA 01718-1017
Document Number	085134-266
Book / Page	85134 / 266
Instrument Date	Jan 16, 2026
Instrument	6166
Transaction Type	Transfer
Record Updated	Feb 4, 2026

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	601 OLD STONE BRK # 79, 79, ACTON, MA 01718-1017

Mortgage

Document Number	0000006167
Date	Jan 16, 2026
Instrument	6167

Lender

Name	GUARANTEED RATE AFFINITY LLC

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2056

June 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ACTON MA
Property Address	601 OLD STONE BRK, ACTON, MA 01718-1017
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	72794-27
Date	Jun 20, 2019
Book Page	72794/27
Instrument	84968

Lender

Name	EASTERN BANK
Type	Bank

Agreement

Type	Balloon Mortgage
Amount	Amount Recorded

September 2019: Condominium Deed, Transfer

Document Type	Condominium Deed
Jurisdiction	ACTON MA
Recording Date	Sep 9, 2019
Property Address	601 OLD STONE BRK, ACTON, MA 01718-1017
Document Number	73247-206
Book / Page	073247 / 000206
Instrument Date	Sep 3, 2019
Instrument	135852
Transaction Type	Transfer
Record Updated	Sep 24, 2019
Title Company	NOT AVAILABLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$1,657.56
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	601 OLD STONE BRK ACTON MA 017181017, ACTON, MA 01718-1017

Mortgage

Document Number	73247-210
Date	Sep 9, 2019
Book Page	073247/000210
Instrument	135853

Lender

Name	STEARNS LNDG

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Sep 8, 2049

June 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ACTON MA
Property Address	601 OLD STONE BRK, ACTON, MA 01718-1017
Document Number	69543-318
Instrument Date	Jun 20, 2017
Transaction Type	Mortgage
Record Updated	Aug 23, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	69543-318
Date	Jun 30, 2017
Book Page	069543/000318
Instrument	102475

Lender

Name	BANK OF AMERICA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	Jun 29, 2032

January 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ACTON MA
Recording Date	Jan 26, 2017
Property Address	601 OLD STONE BRK, ACTON, MA 01718-1017
Document Number	68817-291
Book / Page	68817 / 291
Instrument	14771
Transaction Type	Transfer
Record Updated	May 12, 2021

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$44.59
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	688170295
Date	Jan 26, 2017
Instrument	68817/0295

Lender

Name	PROSPECT MORTGAGE LLC
Type	Mortgage Company

Agreement

Amount	Amount Recorded
Term	360 Months
Due	Jan 26, 2047

Tax Assessment & Valuation

Source: Middlesex County and Acton Town assessment roll, as of April 14, 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

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$7,796.00 (+9.91%)	$454,600 (+6.84%) Building $454,600	$486,495 (+2.6%)
2024	$7,093.00 (+10.31%)	$425,500 (+16.19%) Building $425,500	$474,145
2023	$6,430.00	$366,200 Building $366,200

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

Flood

Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 80% of the US · above 57% of Massachusetts
Wildfire Likelihood	0.01% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	ACTON WATER SUPPLY DISTRICT serves 21,285 people · EPA ID MA2002000
Water Source	Groundwater influenced by surface water
Last State Inspection	Oct 2024
Lead	4 ppb (2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	22 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 52 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 2,000
Verizon Fiber	980 / 880
T-Mobile USA Fixed Wireless	100 / 20

Cell Coverage

5G and 4G LTE (outdoors only)

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