21 Watson Rd, Belmont, MA 02478 Property Records

Middlesex County and Belmont Town property record for 21 Watson Rd, Belmont, MA 02478

Property Summary

Property Type	Condominium
Details	2 bd · 1 ba · 1,391 sqft · built 1928
Lot Size	0.138 acres (6,029 sqft)
Owner	2 Individual Names on File
Last Sale	$560,000 (Jul 2017)
Tax Bill	$7,483 (2025)
Deeds & Mortgages	Mar 2021 Refinance Jul 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`BELM M:20 P:000013 S:U:21`

Property Details

APN / Parcel Number

Primary APN	`BELM M:20 P:000013 S:U:21`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,391 sqft Living Area
1st Floor Area	1,341 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1928
Effective Year Built	Effective 2000
Architectural Style	Condo/Apartment
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Lot Area	6,029 sqft
Garage Type	Basement
Parking Spaces	1 Parking Space
Deck Area	Deck Area

Utilities, Heating & Cooling

Heating System	Steam
Heating Fuel	Gas

Location & Zoning

Street Address	21 WATSON RD
City	BELMONT
State	MA
Zip	02478-3937
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Condominium
Local Zoning Code	R
Legal Subdivision	21-23 WATSON ROAD CONDO
Jurisdiction	BELMONT MA
Township / Civil Division	BELMONT
Census Block Group	1
Census Block	1018
Census Tract	357200

Owner

21 Watson Rd, a condominium, is owned and occupied by two individuals who bought it in July 2017.

Source: Middlesex County and Belmont Town records, as of July 20, 2026

Owner of Record	2 Individual Names on File
Mailing Address	21 WATSON RD, BELMONT, MA 02478-3937
Occupancy	Owner Occupied
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Mar 2, 2021	Deed of Trust, Mortgage · Stand-Alone Refinance NATIONSTAR MORTGAGE LLC
Jul 19, 2017	Quit Claim Deed, Transfer · Conventional Mortgage GUARANTEED RATE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 19, 2017 · Amount on File
Deed Sale	Jul 19, 2017 · Amount on File
Prior Sale	Jul 16, 2015 · Amount on File
Deed Book / Page	69626 / 553
Transfer Doc	069626-553
Record Updated	Oct 29, 2026

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BELMONT MA
Property Address	21 WATSON RD, BELMONT, MA 02478-3937
Transaction Type	Mortgage
Record Updated	Apr 3, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	077114-130
Date	Mar 2, 2021
Book Page	77114/130
Instrument	46826

Lender

Name	NATIONSTAR MORTGAGE LLC
Type	Mortgage Company

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	181 Months
Due	Apr 1, 2036

July 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BELMONT MA
Recording Date	Jul 19, 2017
Property Address	21 WATSON RD, BELMONT, MA 02478-3937
Document Number	69626-553
Book / Page	069626 / 000553
Instrument Date	Jul 14, 2017
Instrument	112714
Transaction Type	Transfer
Record Updated	Aug 8, 2017

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$2,553.00
Amount Accuracy	Confirmed
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21 WATSON RD #21 BELMONT MA 024783937, 21, BELMONT, MA 02478-3937

Mortgage

Document Number	69626-556
Date	Jul 19, 2017
Book Page	069626/000556
Instrument	112715

Lender

Name	GUARANTEED RATE

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Jul 18, 2047

Tax Assessment & Valuation

The 2025 property tax bill for 21 Watson Rd was $7,483.

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$7,483.00	$657,000 Building $657,000	$845,975 (+0.19%)
2024			$844,360
2023	$6,755.00	$601,000 Building $601,000

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

Flood

FEMA maps place 21 Watson Rd in Zone X, an area of minimal flood risk, though there have been 14 flood claims nearby since 1979.

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	6 in force
Nearby Flood Claims	14 (1979–2010)
Claims Outside the SFHA	7 of 14
Most Recent Claim	Mar 2010 · Severe Storms And Flooding
Claims by Event	Severe Storms And Flooding, Mar 2010 · 3 claims Severe Storms And Flooding, May 2006 · 2 claims Extreme Weather Conditons And Flooding, Oct 1996 · 5 claims

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

The area around 21 Watson Rd has no burnable land within ember reach, so its wildfire risk is not rated.

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

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

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

Water System	BELMONT WATER DEPT. (MWRA) serves 27,442 people · EPA ID MA3026000
Water Source	Purchased surface water from MWRA
Last State Inspection	Jul 2023
Lead	2 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 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 584 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Verizon Fiber · Fixed Wireless in parts of the area	2,300 / 2,300
Xfinity Cable	2,000 / 2,000
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T, Starry.

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