20 Warren Ave, Waltham, MA 02452 Property Records

Middlesex County and Waltham City property record for 20 Warren Ave, Waltham, MA 02452

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 1,888 sqft · built 1910
Lot Size	0.15 acres (6,530 sqft)
Owner	Individual Name on File
Tax Bill	$7,873 (2026)
Deeds & Mortgages	Aug 2017 Transfer
Flood Zone	Zone X (minimal risk)
APN	`119874`

Property Details

APN / Parcel Number

Primary APN	`119874`
Alternative APN	`WALT M:051 B:011 L:0004`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,888 sqft Living Area
Gross Area	3,165 sqft
1st Floor Area	1,150 sqft
Basement Area	935 sqft
Unfinished Basement	935 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1910
Effective Year Built	Effective 1910
Architectural Style	Colonial
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	6,530 sqft (0.15 acres)
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	119874
Street Address	20 WARREN AVE
City	WALTHAM
State	MA
Zip	02452-5529
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	1
Legal Block	11
Legal Lot Number	4
Jurisdiction	WALTHAM MA
Township / Civil Division	WALTHAM
Census Block Group	3
Census Block	3010
Census Tract	368902

Owner

20 Warren Ave is owned and occupied by an individual who acquired it in August 2017.

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

Owner of Record	Individual Name on File
Mailing Address	20 WARREN AVE, WALTHAM, MA 02452-5529
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

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 11, 2017
Deed Sale	Aug 11, 2017
Prior Sale	Mar 25, 2013 · Amount on File
Deed Book / Page	69755 / 429
Transfer Doc	61456-371
Record Updated	Oct 29, 2026

August 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	WALTHAM MA
Recording Date	Aug 11, 2017
Property Address	20 WARREN AVE, WALTHAM, MA 02452-5529
Document Number	69755-429
Book / Page	069755 / 000429
Instrument Date	Aug 11, 2017
Instrument	128230
Transaction Type	Transfer
Record Updated	Aug 29, 2017

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	20 WARREN AVE WALTHAM MA 024525529, WALTHAM, MA 02452-5529

Tax Assessment & Valuation

The 2026 property tax bill for 20 Warren Ave was $7,873, up 4.4% from the year before.

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	$7,873.00 (+4.42%)	$762,900 (-0.64%) Land $387,200 Building $375,700	$837,802 (+19.87%)
2025	$7,540.00 (+2.88%)	$767,800 (+0.99%) Land $352,900 Building $414,900	$698,915
2024	$7,329.00 (+8.07%)	$760,300 (+15.69%) Land $350,700 Building $409,600
2023	$6,782.00	$657,200 Land $336,100 Building $321,100

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

Flood

FEMA maps place 20 Warren Ave in Zone X, an area of minimal flood risk, though there have been 34 flood claims nearby since 1978.

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	8 in force
Nearby Flood Claims	34 (1978–2021)
Claims Outside the SFHA	4 of 34
Most Recent Claim	Sep 2021 · Tropical Storm Henri
Claims by Event	Severe Storms And Flooding, Mar 2010 · 6 claims Severe Storms And Flooding, May 2006 · 5 claims Extreme Weather Conditons And Flooding, Oct 1996 · 3 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 20 Warren Ave 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	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 435 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
Astound Broadband Cable	1,500 / 50
AT&T Fixed Wireless	100 / 20