863 Main St, Waltham, MA 02451 Property Records

Middlesex County and Waltham City property record for 863 Main St, Waltham, MA 02451

Property Summary

Property Type	Office Building
Details	2 ba · 4,875 sqft · built 1900
Lot Size	0.12 acres (5,227 sqft)
Owner	Company Name on Record
Last Sale	$1,900,000 (Jul 2023)
Tax Bill	$22,074 (2026)
Deeds & Mortgages	Jul 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`72316`

Property Details

APN / Parcel Number

Primary APN	`72316`
Alternative APN	`WALT M:059 B:011 L:0016`

Interior

Full Baths	2 Baths
Half Baths	2 Half Baths
Stories	1 Story
Building Area	4,875 sqft Total Area
Gross Area	8,630 sqft
Basement Area	3,450 sqft
Unfinished Basement	3,450 sqft

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1900
Exterior Material	Brick
Construction Type	Frame
Roof Type	Flat
Roof Material	Tar & Gravel
Lot Area	5,227 sqft (0.12 acres)

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	72316
Street Address	863 MAIN ST
City	WALTHAM
State	MA
Zip	02451
Property Category	Commercial
Property Type	Commercial > Office > Office Building
Legal Block	11
Legal Lot Number	16
Jurisdiction	WALTHAM MA
Township / Civil Division	WALTHAM
Census Block Group	2
Census Block	2003
Census Tract	368300

Owner

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

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

Owner of Record	Company Name on Record
Mailing Address	382 MASSACHUSETTS AVE, ARLINGTON, MA 02474-6728
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jul 28, 2023 · Amount on Record
Deed Sale	Jul 28, 2023 · Amount on Record
Deed Document Number	202383880
Deed Book / Page	81824 / 522
Record Updated	Oct 29, 2026

July 2023: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	WALTHAM MA
Recording Date	Jul 28, 2023
Property Address	863 MAIN ST, WALTHAM, MA 02451
Document Number	081824-522
Book / Page	81824 / 522
Instrument Date	Jul 28, 2023
Instrument	83880
Transaction Type	Transfer
Record Updated	Aug 11, 2023

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 Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	382 MASSACHUSETTS AVE, ARLINGTON, MA 02474-6728

Mortgage

Document Number	0000083881
Date	Jul 28, 2023
Instrument	83881

Lender

Name	WATERTOWN SAVINGS BANK
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

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
2026	$22,074.00 (+17.25%)	$995,200 (+11.22%) Land $291,300 Building $703,900
2025	$18,827.00 (+13.55%)	$894,800 (+11.77%) Land $274,600 Building $620,200
2024	$16,580.00 (+0.97%)	$800,600 (+7.02%) Land $249,700 Building $550,900
2023	$16,421.00	$748,100 Land $226,400 Building $521,700

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective September 10, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; 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 701 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 · Fiber in parts of the area	1,500 / 50

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

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