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4 Byron St, Boston, MA 02108 Property Records

Suffolk County and Boston City property record for 4 Byron St, Boston, MA 02108

Property Summary

Property TypeCondominium
Details3 bd · 3.5 ba · 2,471 sqft · built 1890
Lot Size0.077 acres (3,372 sqft)
OwnerIndividual Name on File
Last Sale$3,432,500 (Jul 2018)
Tax Bill$34,173 (2025)
Deeds & MortgagesJul 2018 Sale
Flood ZoneZone X (minimal risk)
APNCBOS W:05 P:02300 S:002

Property Details

APN / Parcel Number

Primary APNCBOS W:05 P:02300 S:002

Interior

Bedrooms3 Beds
Full Baths3.5 Baths
Half Baths1 Half Bath
Total Rooms9 Rooms
Stories2 Stories
Building Area2,471 sqft Living Area

Exterior

Year BuiltBuilt 1890
Effective Year BuiltEffective 2021
Architectural StyleOther
Exterior MaterialBrick
Roof TypeFlat
Roof MaterialOther
Lot Area3,372 sqft (0.077 acres)
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Cooling SystemHVAC
Heating SystemForced Air with A/C

Location & Zoning

Street Address4 BYRON ST
CityBOSTON
StateMA
Zip02108-3401
Property CategoryResidential
Property TypeResidential > Condominium / Townhouse > Condominium
Local Zoning CodeCD
JurisdictionBOSTON MA
Township / Civil DivisionBOSTON
Census Block Group1
Census Block1006
Census Tract20101

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic DistrictWithin the Beacon Hill Historic District
listed 1966 · 1,500 contributing resources · National Historic Landmark (designated 1962) · NRIS 66000130

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

Owner

4 Byron St, a condominium, is owned and occupied by an individual who bought it in July 2018.

Source: Suffolk County and Boston City records, as of July 20, 2026

Owner of RecordIndividual Name on File
Mailing Address4 BYRON ST, BOSTON, MA 02108-3401
OccupancyOwner Occupied
Owner TypeIndividual

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 NamesName on Deed
Last SaleJul 25, 2018 · Amount on File
Deed SaleJul 25, 2018 · Amount on File
Prior SaleFeb 23, 2005
Deed Document Number201865354
Deed Book / Page59934 / 37
Record UpdatedSep 20, 2026

July 2018: Condominium Deed, Transfer

Document TypeCondominium Deed
JurisdictionBOSTON MA
Recording DateJul 25, 2018
Property Address4 BYRON ST, BOSTON, MA 02108-3401
Document Number59934-37
Book / Page059934 / 000037
Instrument DateJul 22, 2018
Instrument65354
Transaction TypeTransfer
Record UpdatedAug 14, 2018

Transaction

AmountAmount on Record
Tax$15,652.20
Amount AccuracyConfirmed
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipHusband and Wife
Address4 BYRON ST #4 BOSTON MA 021083401, 4, BOSTON, MA 02108-3401

Tax Assessment & Valuation

The 2025 property tax bill for 4 Byron St was $34,173, up 6.2% from the year before.

Source: Suffolk County and Boston City assessment roll, as of April 14, 2026

Property Jurisdictions

TypeName
StateMassachusetts
CountySuffolk County
MunicipalityBoston City
Unified School DistrictBoston School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$34,173.00 (+6.24%)$2,951,000 (-) Building $2,951,000$3,179,270 (-23.37%)
2024$32,166.00 (+5.6%)$2,951,000 (+4.05%) Building $2,951,000$4,148,935
2023$30,460.00$2,836,100 Building $2,836,100

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

Flood

FEMA maps place 4 Byron St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1980.

Source: FEMA National Flood Hazard Layer, effective January 21, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on File
median of 10 individual policies
Community Rating SystemClass 10 (0% premium discount)
Nearby Flood Policies59 units insured
incl. 49 condo units
Nearby Flood Claims1 (1980)
Most Recent ClaimNov 1980 · 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

Wildfire risk around 4 Byron St is low, with less than a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 96% of the US · lower than 92% of Massachusetts
Wildfire LikelihoodUnder 0.01% annual chance
ExposureDirect
burnable vegetation

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 SystemBOSTON WATER AND SEWER COMMISSION (MWRA)
serves 675,647 people · EPA ID MA3035000
Water SourcePurchased surface water from MWRA
Last State InspectionMar 2026
Lead6 ppb (2026)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureLead service line replacement
currently in violation since Nov 2020
Monitoring and ReportingNone
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 794 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 2,000
Verizon
Fixed Wireless · Fiber in parts of the area		1,000 / 75
Netafy
Fixed Wireless		500 / 150
T-Mobile
Fixed Wireless		100 / 20
AT&T
Fixed Wireless		100 / 20

May also be available: Astound Broadband, Starry.

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