Wellesley, MA
Norfolk County42.2965°N, 71.2926°W
Tracking 9,043 properties across Wellesley, Massachusetts — a community where the median home dates to 1951 and the oldest to 1720. Every parcel mapped with building characteristics, environmental exposure, hazard risk, and ownership history assembled from 140+ sources.
9,043
Properties Tracked
1951
Median Year Built
$1.6M
Median Assessed Value
1%
FEMA Flood Zone
2.67M
NEP Data Facts Tracked
Zone 1
Radon Zone
Click any parcel to view intelligence
Wellesley, MAInc. 1660
Wellesley is one of the wealthiest and most sought-after suburbs in Greater Boston, with a housing stock of predominantly single-family homes that spans from colonial-era properties near the town center to grand estates in the western sections. Wellesley College occupies a significant portion of the town's eastern side, and the town center — with its upscale retail and walkable character — is one of the most desirable village centers in the region.
The commuter rail and proximity to Route 128 and the Mass Pike provide excellent transportation access. For property professionals, Wellesley is a premium market where assessed values are among the highest in the state, renovation quality matters enormously, and the school system drives sustained demand that supports the value premium. Building condition, systems, and recent improvements are the critical variables in a market where location and schools are consistently strong.
Risk Profile
FEMA flood zones, fire protection grades, radon — parcel by parcel
FEMA Flood Zones
131 properties (1%) are in FEMA Special Flood Hazard Areas, where flood insurance is required for federally-backed mortgages.
X
8,912
AE
93
A
38
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
1,420
Grade B
6,306
Grade C
1,296
Grade D
21
Zone 1
Radon Risk
123 mph
Design Wind Speed
ASCE 7 standard
40 psf
Ground Snow Load
ASCE 7 standard
Relatively Low
FEMA Risk Index
NRI composite rating
The Property Landscape
9,043 properties · Median year built 1951 · Avg 15,538 sf
Property Types
Single Family
7,508
Condominium
523
Institutional
416
Commercial
223
Two-Family
166
Multi-Family
162
Mixed Use
19
Agricultural / Open Space
13
Residential Other
6
Vacant Land
4
Construction by Era
Pre-1800
13
1800-1849
25
1850-1899
443
1900-1949
3,384
1950-1979
2,270
1980-1999
543
2000+
1,601
Architectural Styles
Colonial
4,315
Cape Cod
834
Old Style
760
Condominium
666
Ranch
219
Institutional
167
Split Level
149
Raised Ranch
96
Market Activity
Recorded transactions from Norfolk County Registry of Deeds
182
Sales (12 mo)
Arms-length transactions
$2.0M
Median Sale Price
Past 12 months
81%
Owner-Occupied
2%
Out-of-State Owners
NE Provenance tracks recorded deeds, mortgages, and liens for 95% of Wellesley 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
95,899 municipal building permits on file · 88% of properties
NE Provenance tracks 95,899 building permits across 7,918 Wellesley properties — 88% coverage. 4,952 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.
95,899
Permits on File
88%
Coverage
Properties with permits
4,952
Active (5yr)
Recent permit activity
91%
Condition Rated
NEP assessment
Living in Wellesley
Norfolk County · Massachusetts
Zip Codes020300245702481024820249202493
VillagesBabson Park
29,550
Population
2020 Census
9,043
Properties
$1.6M
Median Assessed
81%
Owner-Occupied
10.6
Square Miles
Wellesley covers 10.6 square miles in Norfolk County, Massachusetts. The median assessed property value is $1.6M.
Single-family homes account for 7,508 of Wellesley's 9,043 properties, with 523 condominiums and 328 multi-family buildings. There are 223 commercial properties. About 81% of properties are owner-occupied.
Assessed values range widely — the middle 50% of properties fall between $1.2M and $2.2M, with the highest assessed property at $757.7M. For professionals working in this market, the value spread tells you a lot about what you'll encounter door to door.
Most of Wellesley (100%) is on municipal sewer. Electric service is provided by TOWN OF WELLESLEY - (MA). 1,392 properties have identified commercial activity — restaurants, retail, professional offices, and services that give Wellesley its character.
What Wellesley Property Intelligence Means for Professionals
Insurance & Underwriting
Wellesley's fire protection grade distribution (1,420 Grade A, 6,306 Grade B) directly affects premium calculation. Parcel-level hazard data provides the granularity that ZIP-level aggregation misses.
Insurance solutionsReal Estate & Appraisal
Wellesley's 10 property types, spanning construction from 1720 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. 1% of Wellesley 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
95,899 permits across 88% of properties means most Wellesley inspection assignments can start with documented renovation and system history, not a blank slate.
Inspection solutionsExplore Wellesley property intelligence.
9,043 Wellesley 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/wellesley-ma. For references or attribution, please link back to this page or neprovenance.com. Thank you, we appreciate it.