Portsmouth, RI
Newport County41.6024°N, 71.2503°W
Tracking 8,481 properties across Portsmouth, Rhode Island — a community where the median home dates to 1970 and the oldest to 1700. Every parcel mapped with building characteristics, environmental exposure, hazard risk, and ownership history assembled from 140+ sources.
8,481
Properties Tracked
1970
Median Year Built
$439K
Median Assessed Value
15%
FEMA Flood Zone
2.26M
NEP Data Facts Tracked
14%
Coastal Zone
Click any parcel to view intelligence
Portsmouth, RIInc. 1638
Portsmouth occupies the northern portion of Aquidneck Island, with a more rural and residential character than Newport and Middletown to the south. The town's coastline along the Sakonnet River and Mount Hope Bay creates waterfront properties, and the inland areas include farms, conservation land, and suburban neighborhoods. Portsmouth Abbey School occupies a prominent waterfront campus.
For property professionals, Portsmouth is a moderate-to-upper market on Aquidneck Island, with more space and less density than Newport. The waterfront properties face bay and river exposure, and the town's mix of historic properties, suburban development, and remaining agricultural land creates variety within the municipality.
Risk Profile
FEMA flood zones, fire protection grades, radon, coastal exposure, storm surge — parcel by parcel
FEMA Flood Zones
1,291 properties (15%) are in FEMA Special Flood Hazard Areas, where flood insurance is required for federally-backed mortgages.
X
7,189
AE
798
VE
475
A
18
NOT DIGITIZED
1
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
Grade B
576
Grade C
3,598
Grade D
3,903
Grade E
403
Coastal & Water Exposure
1,161 properties (14%) are within 3 miles of the ocean. 1,578 are classified as waterfront. The closest property is 148 ft from the coastline.
371
SLR 1 ft
Properties affected
614
SLR 3 ft
Properties affected
998
SLR 6 ft
Properties affected
1,953
Surge Exposure
Cat 1/2/3/4
1,091
Estuary
Waterfront
119
Pond
Waterfront
29
Lake
Waterfront
Zone 2
Radon Risk
123 mph
Design Wind Speed
ASCE 7 standard
30 psf
Ground Snow Load
ASCE 7 standard
Very Low
FEMA Risk Index
NRI composite rating
The Property Landscape
8,481 properties · Median year built 1970 · Avg 2,031 sf
Property Types
Single Family
6,390
Vacant Land
641
Institutional
387
Commercial
260
Multi-Family
230
Two-Family
170
Other
160
Condominium
88
Residential Other
86
Industrial
40
Construction by Era
Pre-1800
28
1800-1849
26
1850-1899
126
1900-1949
1,000
1950-1979
2,469
1980-1999
1,431
2000+
784
Market Activity
Recorded transactions from Newport County Registry of Deeds
7
Sales (12 mo)
Arms-length transactions
$950K
Median Sale Price
Past 12 months
57%
Owner-Occupied
14%
Out-of-State Owners
NE Provenance tracks recorded deeds, mortgages, and liens for 98% of Portsmouth 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
21,408 municipal building permits on file · 59% of properties
NE Provenance tracks 21,408 building permits across 5,005 Portsmouth properties — 59% coverage. 3,824 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.
21,408
Permits on File
59%
Coverage
Properties with permits
3,824
Active (5yr)
Recent permit activity
69%
Condition Rated
NEP assessment
Living in Portsmouth
Newport County · Rhode Island
Zip Codes028420287102872
VillagesPrudence Island
17,871
Population
2020 Census
8,481
Properties
$439K
Median Assessed
57%
Owner-Occupied
23.0
Square Miles
Portsmouth covers 23.0 square miles in Newport County, Rhode Island. The median assessed property value is $439K.
Single-family homes account for 6,390 of Portsmouth's 8,481 properties and 421 multi-family buildings. There are 260 commercial properties and 641 parcels of vacant land. About 57% of properties are owner-occupied, and 14% are owned by someone out of state.
Assessed values range widely — the middle 50% of properties fall between $316K and $647K, with the highest assessed property at $45.2M. For professionals working in this market, the value spread tells you a lot about what you'll encounter door to door.
Most properties rely on private septic systems, and 87% have public water service. Electric service is provided by THE NARRAGANSETT ELECTRIC CO. 344 properties have identified commercial activity — restaurants, retail, professional offices, and services that give Portsmouth its character.
What Portsmouth Property Intelligence Means for Professionals
Insurance & Underwriting
With 15% of properties in FEMA flood zones and 14% in the coastal zone, Portsmouth concentrates several major underwriting variables. Parcel-level hazard data provides the granularity that ZIP-level aggregation misses.
Insurance solutionsReal Estate & Appraisal
Portsmouth's 10 property types, spanning construction from 1700 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. 15% of Portsmouth 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
21,408 permits across 59% of properties means most Portsmouth inspection assignments can start with documented renovation and system history, not a blank slate.
Inspection solutionsExplore Portsmouth property intelligence.
8,481 Portsmouth 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/portsmouth-ri. For references or attribution, please link back to this page or neprovenance.com. Thank you, we appreciate it.