Dedham, MA
Norfolk County42.2489°N, 71.1756°W
Tracking 9,409 properties across Dedham, Massachusetts — a community where the median home dates to 1951 and the oldest to 1636. Every parcel mapped with building characteristics, environmental exposure, hazard risk, and ownership history assembled from 140+ sources.
9,409
Properties Tracked
1951
Median Year Built
$653K
Median Assessed Value
5%
FEMA Flood Zone
2.72M
NEP Data Facts Tracked
Zone 1
Radon Zone
Click any parcel to view intelligence
Dedham, MAInc. 1635
Dedham is an inner suburb south of Boston with deep historic roots — it served as the county seat of Norfolk County since the county's founding in 1793, and the Norfolk County courthouse and registry of deeds remain in Dedham center. The town's housing stock reflects its long settlement history: colonial-era homes near the center, Victorian-era development along the main roads, and post-war suburban neighborhoods in the western and southern sections.
Route 1 and the Providence Highway corridor bring significant commercial and retail development, including the Legacy Place shopping center. For property professionals, Dedham offers an accessible suburban market with more commercial property and housing variety than a typical bedroom community, plus the county government functions that bring institutional land use.
Risk Profile
FEMA flood zones, fire protection grades, radon — parcel by parcel
FEMA Flood Zones
455 properties (5%) are in FEMA Special Flood Hazard Areas, where flood insurance is required for federally-backed mortgages.
X
8,954
AE
328
A
127
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
1,412
Grade B
4,770
Grade C
3,221
Grade D
6
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
9,409 properties · Median year built 1951 · Avg 2,529 sf
Property Types
Single Family
6,692
Institutional
736
Two-Family
701
Multi-Family
606
Commercial
275
Vacant Land
250
Industrial
57
Mixed Use
45
Residential Other
38
Other
5
Construction by Era
Pre-1800
51
1800-1849
179
1850-1899
625
1900-1949
3,085
1950-1979
3,347
1980-1999
730
2000+
631
Architectural Styles
Colonial
2,238
Cape Cod
1,234
Conventional
1,059
Condominium
907
Ranch
826
Raised Ranch
642
Multi-Family
593
Vacant Land
365
Market Activity
Recorded transactions from Norfolk County Registry of Deeds
147
Sales (12 mo)
Arms-length transactions
$750K
Median Sale Price
Past 12 months
75%
Owner-Occupied
1%
Out-of-State Owners
NE Provenance tracks recorded deeds, mortgages, and liens for 96% of Dedham 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
48,147 municipal building permits on file · 78% of properties
NE Provenance tracks 48,147 building permits across 7,344 Dedham properties — 78% coverage. 4,194 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.
48,147
Permits on File
78%
Coverage
Properties with permits
4,194
Active (5yr)
Recent permit activity
92%
Condition Rated
NEP assessment
Living in Dedham
Norfolk County · Massachusetts
Zip Codes0202102026020620209002136
25,364
Population
2020 Census
9,409
Properties
$653K
Median Assessed
75%
Owner-Occupied
10.7
Square Miles
Dedham covers 10.7 square miles in Norfolk County, Massachusetts. The median assessed property value is $653K.
Single-family homes account for 6,692 of Dedham's 9,409 properties and 1,307 multi-family buildings. There are 275 commercial properties and 250 parcels of vacant land. About 75% of properties are owner-occupied.
Assessed values range widely — the middle 50% of properties fall between $542K and $812K, with the highest assessed property at $152.9M. For professionals working in this market, the value spread tells you a lot about what you'll encounter door to door.
Most of Dedham (95%) is on municipal sewer. Electric service is provided by TOWN OF BRAINTREE - (MA). 1,072 properties have identified commercial activity — restaurants, retail, professional offices, and services that give Dedham its character.
What Dedham Property Intelligence Means for Professionals
Insurance & Underwriting
Dedham's fire protection grade distribution (1,412 Grade A, 4,770 Grade B) directly affects premium calculation. Parcel-level hazard data provides the granularity that ZIP-level aggregation misses.
Insurance solutionsReal Estate & Appraisal
Dedham's 10 property types, spanning construction from 1636 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. 5% of Dedham 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
48,147 permits across 78% of properties means most Dedham inspection assignments can start with documented renovation and system history, not a blank slate.
Inspection solutionsExplore Dedham property intelligence.
9,409 Dedham 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/dedham-ma. For references or attribution, please link back to this page or neprovenance.com. Thank you, we appreciate it.