421 Mount Vernon St, Dedham, MA 02026 Property Records

Norfolk County and Dedham Town property record for 421 Mount Vernon St, Dedham, MA 02026

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,421 sqft · built 1935
Lot Size	0.138 acres (6,000 sqft)
Owner	2 Company Names on Record
Tax Bill	$8,556 (2026)
Deeds & Mortgages	Sep 2020 Transfer Sep 2020 Transfer
Flood Zone	Zone X (minimal risk)
APN	`DEDH M:0154 L:0045`

Property Details

APN / Parcel Number

Primary APN	`DEDH M:0154 L:0045`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	2 Stories
Building Area	1,421 sqft Living Area
Gross Area	2,792 sqft
1st Floor Area	888 sqft
Basement Area	912 sqft
Unfinished Basement	548 sqft

Exterior

Year Built	Built 1935
Effective Year Built	Effective 1935
Architectural Style	Cape Cod
Exterior Material	Aluminum/Vinyl
Roof Type	Gable
Roof Material	Asphalt
Lot Area	6,000 sqft (0.138 acres)

Utilities, Heating & Cooling

Heating System	Steam
Heating Fuel	Oil

Location & Zoning

Street Address	421 MOUNT VERNON ST
City	DEDHAM
State	MA
Zip	02026-3628
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	B
Legal Lot Number	45
Jurisdiction	DEDHAM MA
Township / Civil Division	DEDHAM
Census Block Group	5
Census Block	5022
Census Tract	402400

Owner

Source: Norfolk County and Dedham Town 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 Company Names on Record
Mailing Address	421 MOUNT VERNON ST, DEDHAM, MA 02026-3628
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Sep 16, 2020	Quit Claim Deed, Transfer NOT AVAILABLE
Sep 16, 2020	Quit Claim Deed, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 10, 2010
Deed Sale	Sep 10, 2010
Prior Sale	Jun 30, 1989 · Amount on Record
Deed Document Number	20101207812
Last Transfer Date	Sep 11, 2020
Transfer Doc	1455667
Record Updated	Oct 29, 2026

September 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	DEDHAM MA
Recording Date	Sep 16, 2020
Property Address	421 MOUNT VERNON ST, DEDHAM, MA 02026-3628
Document Number	0001455667
Instrument Date	Sep 11, 2020
Instrument	1455667
Transaction Type	Transfer
Record Updated	Oct 6, 2020
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	11 NETTA RD DEDHAM MA 020263616, DEDHAM, MA 02026-3616

September 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	DEDHAM MA
Recording Date	Sep 16, 2020
Property Address	421 MOUNT VERNON ST, DEDHAM, MA 02026-3628
Document Number	0001455666
Instrument Date	Sep 11, 2020
Instrument	1455666
Transaction Type	Transfer
Record Updated	Oct 6, 2020
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	421 MOUNT VERNON ST DEDHAM MA 020263628, DEDHAM, MA 02026-3628

Tax Assessment & Valuation

Source: Norfolk County and Dedham Town assessment roll, as of April 14, 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Norfolk County
County Subdivision	Dedham Town
Unified School District	Dedham School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$8,556.00 (+5.97%)	$695,600 (+8.72%) Land $375,100 Building $320,500	$617,779 (-22.11%)
2025	$8,074.00 (+1.56%)	$639,800 (+0.6%) Land $347,300 Building $292,500	$793,155 (+4.14%)
2024	$7,950.00 (+4.81%)	$636,000 (+7.67%) Land $319,700 Building $316,300	$761,615
2023	$7,585.00	$590,700 Land $296,800 Building $293,900

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 May 26, 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	4 in force
Nearby Flood Claims	4 (1991–2025)
Claims Outside the SFHA	3 of 4
Most Recent Claim	May 2025 · rainfall accumulation

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	Low lower than 99.1% of the US · lower than 98.7% of Massachusetts
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond 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	DEDHAM WESTWOOD WATER DIST. serves 41,630 people · EPA ID MA3073000
Water Source	Purchased surface water from MWRA
Last State Inspection	Apr 2025
Lead	2 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	Total trihalomethanes resolved · Oct 2021
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 648 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 2,000
Astound Broadband Cable · Fiber in parts of the area	1,500 / 50
Verizon Fiber · Fixed Wireless in parts of the area	980 / 880
Netafy Fixed Wireless	150 / 150

May also be available: T-Mobile.

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