Somersworth, NH
Strafford County43.2626°N, 70.8646°W
Tracking 4,153 properties across Somersworth, New Hampshire — a community where the median home dates to 1970 and the oldest to 1732. Every parcel mapped with building characteristics, environmental exposure, hazard risk, and ownership history assembled from 140+ sources.
4,153
Properties Tracked
1970
Median Year Built
$368K
Median Assessed Value
2%
FEMA Flood Zone
1.08M
NEP Data Facts Tracked
Zone 1
Radon Zone
Click any parcel to view intelligence
Somersworth, NHInc. 1700
Somersworth is a small city on the Salmon Falls River at the Maine border, with a dense downtown built around textile manufacturing. The housing stock is predominantly multi-family near the center, with suburban development in the outlying areas.
For property professionals, Somersworth is an affordable, dense market with river flood exposure and the older housing stock typical of New Hampshire's small mill cities.
Risk Profile
FEMA flood zones, fire protection grades, radon — parcel by parcel
FEMA Flood Zones
80 properties (2%) are in FEMA Special Flood Hazard Areas, where flood insurance is required for federally-backed mortgages.
X
4,073
A
46
AE
34
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
545
Grade B
1,978
Grade C
1,226
Grade D
261
Grade E
143
Zone 1
Radon Risk
112 mph
Design Wind Speed
ASCE 7 standard
60 psf
Ground Snow Load
ASCE 7 standard
Relatively Low
FEMA Risk Index
NRI composite rating
The Property Landscape
4,153 properties · Median year built 1970 · Avg 2,913 sf
Property Types
Single Family
2,860
Multi-Family
487
Other
237
Vacant Land
165
Commercial
135
Condominium
124
Institutional
85
Industrial
30
Residential Other
23
Mixed Use
5
Construction by Era
Pre-1800
7
1800-1849
56
1850-1899
370
1900-1949
619
1950-1979
1,271
1980-1999
814
2000+
611
Architectural Styles
Cape Cod
713
Ranch
617
Colonial
441
Mobile Home
393
Old Style
362
Commercial
168
Split Entry
140
Condominium
114
Living in Somersworth
Strafford County · New Hampshire
Zip Codes0382003878
11,855
Population
2020 Census
4,153
Properties
$368K
Median Assessed
69%
Owner-Occupied
9.8
Square Miles
Somersworth covers 9.8 square miles in Strafford County, New Hampshire. The median assessed property value is $368K.
Single-family homes account for 2,860 of Somersworth's 4,153 properties, with 124 condominiums and 488 multi-family buildings. There are 135 commercial properties and 165 parcels of vacant land. About 69% of properties are owner-occupied, and 5% are owned by someone out of state.
Assessed values range widely — the middle 50% of properties fall between $294K and $462K, with the highest assessed property at $32.3M. For professionals working in this market, the value spread tells you a lot about what you'll encounter door to door.
57% of properties are on municipal sewer, with the remainder on private septic systems, and 90% have public water service. Electric service is provided by UNITIL ENERGY SYSTEMS. 348 properties have identified commercial activity — restaurants, retail, professional offices, and services that give Somersworth its character.
What Somersworth Property Intelligence Means for Professionals
Insurance & Underwriting
Somersworth's fire protection grade distribution (545 Grade A, 1,978 Grade B) directly affects premium calculation. Parcel-level hazard data provides the granularity that ZIP-level aggregation misses.
Insurance solutionsReal Estate & Appraisal
Somersworth's 10 property types, spanning construction from 1732 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. 2% of Somersworth 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
Understanding a property's construction era, environmental exposure, and building characteristics before arriving on site transforms inspection from discovery to verification.
Inspection solutionsExplore Somersworth property intelligence.
4,153 Somersworth 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/somersworth-nh. For references or attribution, please link back to this page or neprovenance.com. Thank you, we appreciate it.