300 3rd Ave, Waltham, MA 02451 Property Records

Middlesex County and Waltham City property record for 300 3rd Ave, Waltham, MA 02451 · Last verified April 2026

Property Summary

Property Type	Office Building
Details	3 bd · 4 ba · 124,950 sqft · built 2021
Lot Size	1.69 acres (73,812 sqft)
Owner	2 Company Names on File
Last Sale	$4,332,660 (Mar 2020)
Tax Bill	$1,436,388 (2025)
Deeds & Mortgages	Jul 2020 Refinance Mar 2020 Transfer + 2 more
Flood Zone	Zone X (minimal risk)
APN	`111391`

Property Details

APN / Parcel Number

Primary APN	`111391`
Alternative APN	`WALT M:039 B:003 L:0005`

Interior

Bedrooms	3 Beds
Full Baths	4 Baths
Half Baths	4 Half Baths
Total Rooms	8 Rooms
Stories	6 Stories
Building Area	124,950 sqft Total Area
Gross Area	249,900 sqft
Basement Area	825 sqft
Unfinished Basement	825 sqft

Exterior

Year Built	Built 2021
Effective Year Built	Effective 2021
Exterior Material	Glass
Construction Type	Steel Frame
Roof Type	Flat
Roof Material	Other
Lot Area	73,812 sqft (1.69 acres)
Garage Type	Attached

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	111391
Street Address	300 3RD AVE
City	WALTHAM
State	MA
Zip	02451-7525
Property Category	Commercial
Property Type	Commercial > Office > Office Building
Legal Block	3
Legal Lot Number	5
Jurisdiction	WALTHAM MA
Township / Civil Division	WALTHAM
Census Block Group	3
Census Block	3013
Census Tract	368200

Owner

Source: Middlesex County and Waltham City records · APN 111391

Assessment roll updated April 14, 2026 · Last verified April 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	53 STATE ST, BOSTON, MA 02109-2820
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Date	Document
Jul 14, 2020	Deed of Trust, Mortgage · Stand-Alone Refinance BANK OZK
Mar 04, 2020	Quit Claim Deed, Transfer NOT AVAILABLE
Mar 04, 2020	Quit Claim Deed, Transfer NOT AVAILABLE
Mar 04, 2020	Quit Claim Deed, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Mar 04, 2020 · Amount on Record
Deed Sale	Mar 04, 2020 · Amount on Record
Prior Sale	Mar 04, 2020 · Amount on Record
Deed Document Number	202032707
Deed Book / Page	74232 / 359
Record Updated	Jun 08, 2026

July 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	WALTHAM MA
Property Address	300 3RD AVE, WALTHAM, MA 02451-7525
Transaction Type	Mortgage
Record Updated	Feb 05, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	75109-293
Date	Jul 14, 2020
Book Page	75109/293
Instrument	112907

Lender

Name	BANK OZK

Agreement

Type	Stand-Alone Refinance
Amount	Amount Recorded

March 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	WALTHAM MA
Recording Date	Mar 04, 2020
Property Address	300 3RD AVE, WALTHAM, MA 02451-7525
Document Number	74232-354
Book / Page	074232 / 000354
Instrument Date	Mar 02, 2020
Instrument	32706
Transaction Type	Transfer
Record Updated	Mar 24, 2020
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	300 3RD AVE #2 WALTHAM MA 024517525, 2, WALTHAM, MA 02451-7525

March 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	WALTHAM MA
Recording Date	Mar 04, 2020
Property Address	300 3RD AVE, WALTHAM, MA 02451-7525
Document Number	74232-349
Book / Page	074232 / 000349
Instrument Date	Mar 02, 2020
Instrument	32705
Transaction Type	Transfer
Record Updated	Mar 24, 2020
Title Company	NOT AVAILABLE

Transaction

Amount	Amount Recorded
Tax	$23,456.00
Amount Accuracy	Confirmed
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	53 STATE ST #8THFL BOSTON MA 021092820, 8THFL, BOSTON, MA 02109-2820

March 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	WALTHAM MA
Recording Date	Mar 04, 2020
Property Address	300 3RD AVE, WALTHAM, MA 02451-7525
Document Number	74232-359
Book / Page	074232 / 000359
Instrument Date	Mar 02, 2020
Instrument	32707
Transaction Type	Transfer
Record Updated	Mar 24, 2020
Title Company	NOT AVAILABLE

Transaction

Amount	Amount Recorded
Tax	$19,757.00
Amount Accuracy	Confirmed
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	53 STATE ST #8THFL BOSTON MA 021092820, 8THFL, BOSTON, MA 02109-2820

Tax Assessment & Valuation

Source: Middlesex County and Waltham City records · Assessment roll updated April 14, 2026 · Last verified April 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

Assessed value is set for property tax purposes and is not a market price estimate.

Year	Tax Bill	Assessed Value
2025	$1,436,388.00 (+57.83%)	$68,269,400 (+55.36%) Land $2,781,600 Building $65,487,800
2024	$910,062.00 (+40.29%)	$43,943,100 (+48.69%) Land $2,524,800 Building $41,418,300
2023	$648,699.00	$29,553,500 Land $1,721,500 Building $27,832,000

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Middlesex County (25017C), updated September 10, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 250173682003, refreshed September 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
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Nearby Flood Policies	2 in force

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 44 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Xfinity	Cable	2,000 / 2,000
Radiate Holdings	Cable	1,500 / 50

May also be available at this address: Verizon, Radiate Holdings, T-Mobile USA. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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