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18 Union Wharf, Boston, MA 02109 Property Records

Suffolk County and Boston City property record for 18 Union Wharf, Boston, MA 02109

Property Summary

Property TypeCondominium
Details2 bd · 2.5 ba · 2,286 sqft · built 1855
Lot Size0.052 acres (2,286 sqft)
OwnerIndividual Name on File
Last Sale$4,950,000 (Sep 2023)
Tax Bill$48,741 (2025)
Deeds & MortgagesSep 2023 Sale & Mortgage
Flood ZoneZone AE (high risk)
APNCBOS W:03 P:03038 S:249

Property Details

APN / Parcel Number

Primary APNCBOS W:03 P:03038 S:249

Interior

Bedrooms2 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms6 Rooms
Stories3 Stories
Building Area2,286 sqft Living Area
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1855
Effective Year BuiltEffective 2016
Architectural StyleOther
Exterior MaterialBrick
Roof TypeGable
Roof MaterialAsphalt
Lot Area2,286 sqft (0.052 acres)
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Cooling SystemHVAC
Heating SystemHeat Pump

Location & Zoning

Street Address18 UNION WHARF
CityBOSTON
StateMA
Zip02109-1202
Property CategoryResidential
Property TypeResidential > Condominium / Townhouse > Condominium
Local Zoning CodeCD
Legal SubdivisionUNION WHARF CONDO
JurisdictionBOSTON MA
Township / Civil DivisionBOSTON
Census Block Group1
Census Block1010
Census Tract30500

Owner

18 Union Wharf, a condominium, is owned and occupied by an individual who bought it in September 2023.

Source: Suffolk County and Boston City records, as of October 5, 2026

Owner of RecordIndividual Name on File
Mailing Address18 UNION WHARF, BOSTON, MA 02109-1202
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 SaleSep 28, 2023 · Amount on File
Deed SaleSep 28, 2023 · Amount on File
Prior SaleOct 29, 2015 · Amount on File
Deed Book / Page69473 / 131
Prior Transfer DateSep 27, 2023
Prior Transfer Doc069473-131
Record UpdatedOct 29, 2026

September 2023: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionBOSTON MA
Recording DateSep 28, 2023
Property Address18 UNION WHARF, BOSTON, MA 02109-1202
Document Number069473-131
Book / Page69473 / 131
Instrument DateSep 27, 2023
Instrument61257
Transaction TypeTransfer
Record UpdatedOct 13, 2023

Transaction

AmountAmount on Record
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address35 SCOTLAND RD, READING, MA 01867-3322

Mortgage

Document Number0000061258
DateSep 28, 2023
Instrument61258
Lender
NameCAMBRIDGE TRUST CO
TypeBank
Agreement
TypeStand-Alone First Mortgage
AmountAmount on Record
Interest
Rate TypeAdjustable Rate
Rate6.13%
Type Change DateOct 1, 2030
Max Rate At Change3%
IndexOther
Margin3

Tax Assessment & Valuation

The 2025 property tax bill for 18 Union Wharf was $48,741, up 53.7% 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$48,741.00 (+53.71%)$4,209,100 (+44.68%) Building $4,209,100$5,204,480 (+1.25%)
2024$31,710.00 (+2.51%)$2,909,200 (+1%) Building $2,909,200$5,140,070
2023$30,934.00$2,880,300 Building $2,880,300

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

Flood

FEMA maps place 18 Union Wharf in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.

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

FEMA Flood ZoneZone AE
high risk
100-Year FloodplainYes
1% annual chance
FloodwayNo
Base Flood Elevation10.0 ft
Flood Insurance RequirementRequired
federally backed loans
Flood Insurance CostPremium on File
median of 15 individual policies
Community Rating SystemClass 10 (0% premium discount)
Nearby Flood Policies230 units insured
incl. 215 condo units
Nearby Flood Claims11 (1991–2018)
Claims Outside the SFHA3 of 11
Most Recent ClaimJan 2018 · tidal / storm surge

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 18 Union Wharf 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 RiskNot 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 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 917 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
Starry
Fixed Wireless · Fiber in parts of the area		800 / 250
Netafy
Fixed Wireless		500 / 150
T-Mobile
Fixed Wireless		100 / 20

May also be available: Astound Broadband, AT&T.

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