423 Main St, Waltham, MA 02452 Property Records

Middlesex County and Waltham City property record for 423 Main St, Waltham, MA 02452

Property Summary

Property Type	Single Family Home
Details	4 bd · 1.5 ba · 1,948 sqft · built 1910
Lot Size	0.23 acres (10,001 sqft)
Owner	2 Individual Names on Record
Last Sale	$851,000 (Nov 2023)
Tax Bill	$7,126 (2026)
Deeds & Mortgages	Mar 2025 Refinance Dec 2025 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`71291`

Property Details

APN / Parcel Number

Primary APN	`71291`
Alternative APN	`WALT M:061 B:007 L:0010`

Interior

Bedrooms	4 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,948 sqft Living Area
Gross Area	3,158 sqft
Basement Area	1,030 sqft
Unfinished Basement	1,030 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1910
Effective Year Built	Effective 1910
Architectural Style	Other
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Hip
Roof Material	Slate
Lot Area	10,001 sqft (0.23 acres)
Garage Type	Detached

Utilities, Heating & Cooling

Heating System	Steam
Heating Fuel	Gas

Location & Zoning

Account Number	71291
Street Address	423 MAIN ST
City	WALTHAM
State	MA
Zip	02452-6135
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	1
Legal Block	7
Legal Lot Number	10
Jurisdiction	WALTHAM MA
Township / Civil Division	WALTHAM
Census Block Group	1
Census Block	1016
Census Tract	368902

Owner

Source: Middlesex County and Waltham City records, as of October 20, 2026

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

Owner of Record	2 Individual Names on Record
Mailing Address	423 MAIN ST, WALTHAM, MA 02452-6135
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Mar 24, 2025	Deed of Trust, Mortgage · Stand-Alone Refinance GUILD MORTGAGE CO
Dec 24, 2025	Deed of Trust, Mortgage · Conventional Mortgage GUILD MORTGAGE CO
Nov 30, 2023	Quit Claim Deed, Transfer · Stand-Alone First Mortgage GUILD MORTGAGE CO
Jan 30, 2018	Deed of Trust, Mortgage AMERICAN INTERNET MORTGAGE INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 30, 2023 · Amount on Record
Deed Sale	Nov 30, 2023 · Amount on Record
Prior Sale	Dec 18, 2017 · Amount on Record
Deed Book / Page	82264 / 148
Record Updated	Oct 29, 2026

March 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	WALTHAM MA
Property Address	423 MAIN ST, WALTHAM, MA 02452-6135
Transaction Type	Mortgage
Record Updated	Feb 9, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	083886-397
Date	Mar 24, 2025
Book Page	83886/397
Instrument	29587

Lender

Name	GUILD MORTGAGE CO
Type	Mortgage Company

Agreement

Type	Stand-Alone Refinance
Amount	Amount Recorded
Term	361 Months
Due	Apr 1, 2055

December 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	WALTHAM MA
Property Address	423 MAIN ST, WALTHAM, MA 02452-6135
Transaction Type	Mortgage
Record Updated	Feb 9, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	085058-124
Date	Dec 24, 2025
Book Page	85058/124
Instrument	159028

Lender

Name	GUILD MORTGAGE CO
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	349 Months
Due	Jan 1, 2055

November 2023: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	WALTHAM MA
Recording Date	Nov 30, 2023
Property Address	423 MAIN ST, WALTHAM, MA 02452-6135
Document Number	082264-148
Book / Page	82264 / 148
Instrument Date	Nov 30, 2023
Instrument	136957
Transaction Type	Transfer
Record Updated	Feb 9, 2026

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
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
Relationship	Tenants in Common
Address	423 MAIN ST, WALTHAM, MA 02452-6135

Mortgage

Document Number	0000136958
Date	Nov 30, 2023
Instrument	136958

Lender

Name	GUILD MORTGAGE CO
Type	Mortgage Company

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount Recorded

January 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	WALTHAM MA
Property Address	423 MAIN ST, WALTHAM, MA 02452-6135
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	70569-93
Date	Jan 30, 2018
Book Page	70569/93
Instrument	13972

Lender

Name	AMERICAN INTERNET MORTGAGE INC
Type	Mortgage Company

Agreement

Amount	Amount Recorded
Term	360 Months
Due	Jan 1, 2048

Tax Assessment & Valuation

Source: Middlesex County and Waltham City assessment roll, as of April 14, 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Middlesex County
Municipality	Waltham City
Unified School District	Waltham School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$7,126.00 (+5.88%)	$690,500 (+0.76%) Land $424,000 Building $266,500	$797,630 (-7.01%)
2025	$6,730.00 (+2.65%)	$685,300 (+0.76%) Land $386,400 Building $298,900	$857,755 (+8.24%)
2024	$6,556.00 (+2.34%)	$680,100 (+9.57%) Land $384,000 Building $296,100	$792,490
2023	$6,406.00	$620,700 Land $352,000 Building $268,700

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 Claims	13 (1978–2010)
Claims Outside the SFHA	10 of 13
Most Recent Claim	Mar 2010 · Severe Storms And Flooding
Claims by Event	Severe Storms And Flooding, Mar 2001 · 11 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

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	WALTHAM WATER DEPARTMENT serves 65,218 people · EPA ID MA3308000
Water Source	Purchased surface water from MWRA
Last State Inspection	Jun 2024
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 534 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Verizon Fiber	2,300 / 2,300
Xfinity Cable	2,000 / 2,000
Astound Broadband Cable	1,500 / 50

May also be available: AT&T, T-Mobile.

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