Winthrop, MA
Suffolk County42.3747°N, 70.9826°W
Tracking 5,993 properties across Winthrop, Massachusetts — a community where the median home dates to 1917 and the oldest to 1730. Every parcel mapped with building characteristics, environmental exposure, hazard risk, and ownership history assembled from 140+ sources.
5,993
Properties Tracked
1917
Median Year Built
$582K
Median Assessed Value
42%
FEMA Flood Zone
1.72M
NEP Data Facts Tracked
100%
Coastal Zone
Click any parcel to view intelligence
Winthrop, MAInc. 1630
Winthrop is a small, densely populated town on a peninsula in Boston Harbor, connected to the mainland by a narrow causeway through East Boston. The town is essentially surrounded by water — Boston Harbor to the south and west, the Atlantic to the east — making it one of the most concentrated coastal exposure environments in Massachusetts. Nearly every property in Winthrop has some degree of ocean proximity, and many are directly in FEMA flood zones.
The housing stock is dense and predominantly older — multi-family buildings and close-set single-family homes from the late 1800s and early 1900s, built during Winthrop's era as a summer resort community that transitioned to year-round residential. For property professionals, Winthrop is a case study in concentrated coastal risk: storm surge, flood insurance requirements, salt air deterioration, and wind exposure all converge on a small peninsula. Parcel-level flood zone data and coastal proximity metrics are essential for every property discipline operating here.
Risk Profile
FEMA flood zones, fire protection grades, radon, coastal exposure, storm surge — parcel by parcel
FEMA Flood Zones
2,522 properties (42%) are in FEMA Special Flood Hazard Areas, where flood insurance is required for federally-backed mortgages.
X
3,471
AE
1,923
VE
414
AO
185
Fire Protection Grades
Fire protection grades reflect proximity to fire stations and hydrant infrastructure. Grade affects insurance pricing in every New England state.
Grade A
1,334
Grade B
3,940
Grade C
694
Grade D
25
Coastal & Water Exposure
5,993 properties (100%) are within 3 miles of the ocean. 2,466 are classified as waterfront. The closest property is 2 ft from the coastline.
939
SLR 1 ft
Properties affected
1,047
SLR 3 ft
Properties affected
2,552
SLR 6 ft
Properties affected
4,198
Surge Exposure
Cat 1/2/3/4
981
Estuary
Waterfront
603
Marine
Waterfront
25
Pond
Waterfront
Zone 1
Radon Risk
123 mph
Design Wind Speed
ASCE 7 standard
40 psf
Ground Snow Load
ASCE 7 standard
Very Low
FEMA Risk Index
NRI composite rating
The Property Landscape
5,993 properties · Median year built 1917 · Avg 2,082 sf
Property Types
Single Family
2,309
Multi-Family
1,560
Two-Family
1,425
Institutional
360
Commercial
182
Vacant Land
89
Mixed Use
36
Industrial
15
Other
14
Agricultural / Open Space
2
Construction by Era
Pre-1800
5
1800-1849
9
1850-1899
621
1900-1949
3,610
1950-1979
964
1980-1999
346
2000+
166
Architectural Styles
Old Style
1,351
Condominium
1,079
Colonial
448
Condo Conversion
180
Cape Cod
171
Ranch
151
Bungalow
114
Vacant Land
107
Market Activity
Recorded transactions from Suffolk County Registry of Deeds
61%
Owner-Occupied
2%
Out-of-State Owners
NE Provenance tracks recorded deeds, mortgages, and liens for 99% of Winthrop properties. Ownership intelligence includes transaction history, entity detection, portfolio identification, and lien analysis — assembled from public registry records into a single property-level profile.
Building Permits & Maintenance
5,444 municipal building permits on file · 32% of properties
NE Provenance tracks 5,444 building permits across 1,915 Winthrop properties — 32% coverage. 1,767 properties have permit activity in the last five years.
Each permit record reveals maintenance decisions: roof replacements, electrical upgrades, kitchen renovations, solar installations. For insurance, lending, and appraisal professionals, permit history is the most objective evidence of property condition available from public records.
5,444
Permits on File
32%
Coverage
Properties with permits
1,767
Active (5yr)
Recent permit activity
95%
Condition Rated
NEP assessment
Living in Winthrop
Suffolk County · Massachusetts
Zip Codes020500212802152
19,316
Population
2020 Census
5,993
Properties
$582K
Median Assessed
61%
Owner-Occupied
2.3
Square Miles
Winthrop covers 2.3 square miles in Suffolk County, Massachusetts. The median assessed property value is $582K.
Single-family homes account for 2,309 of Winthrop's 5,993 properties and 2,986 multi-family buildings. There are 182 commercial properties and 89 parcels of vacant land. About 61% of properties are owner-occupied.
Assessed values range widely — the middle 50% of properties fall between $424K and $719K, with the highest assessed property at $47.6M. For professionals working in this market, the value spread tells you a lot about what you'll encounter door to door.
Most of Winthrop (100%) is on municipal sewer. Electric service is provided by NSTAR ELECTRIC COMPANY. 582 properties have identified commercial activity — restaurants, retail, professional offices, and services that give Winthrop its character.
Environmental note: Winthrop has an average EPA lead paint indicator at the 60th percentile nationally, consistent with 635 properties built before 1900 when lead paint was standard. 972 properties exceed at least one EPA environmental justice threshold — a factor in lending compliance and environmental due diligence.
What Winthrop Property Intelligence Means for Professionals
Insurance & Underwriting
With 42% of properties in FEMA flood zones and 100% in the coastal zone, Winthrop concentrates several major underwriting variables. Parcel-level hazard data provides the granularity that ZIP-level aggregation misses.
Insurance solutionsReal Estate & Appraisal
Winthrop's 10 property types, spanning construction from 1730 to present, require local market knowledge for accurate comparable selection and valuation. NEP assembles building characteristics, environmental exposure, and condition signals into a single property profile.
Real estate solutionsLending & Title
Collateral assessment requires flood zone verification, environmental screening, and ownership chain validation. 42% of Winthrop properties are in SFHAs where flood insurance is a federal lending requirement. NEP provides property-level compliance data from public records.
Lending solutionsInspection & Property Services
5,444 permits across 32% of properties means most Winthrop inspection assignments can start with documented renovation and system history, not a blank slate.
Inspection solutionsExplore Winthrop property intelligence.
5,993 Winthrop properties — each with risk profiles, building data, permit history, and ownership analysis from 140+ sources. Open any property and see the full picture.
Newburyport, MA · Federalist · 3,524 sq ft · 4 bed / 3 bath · Built 1800 · Historic District
NEP Property Intelligence Summary
ConditionC1Fire ClassBFlood ZoneXOwnerIndividualOccupancyOwner-Occupied
Purchased2018 (8yr)Permits11 totalSystems3 updatedLiensClearAssessed$1.6MOcean0.3 mi
EraPre-1940HistoricDesignatedRenovationRecentRadonZone 1
Cite this data
Source: NE Provenance, “Professional Property Intelligence for New England,” neprovenance.com/insights/town/winthrop-ma. For references or attribution, please link back to this page or neprovenance.com. Thank you, we appreciate it.