Ansonia, CT
Naugatuck Valley41.3430°N, 73.0787°W
Tracking 5,787 properties across Ansonia, Connecticut — a community where the median home dates to 1955 and the oldest to 1700. Every parcel mapped with building characteristics, environmental exposure, hazard risk, and ownership history assembled from 140+ sources.
5,787
Properties Tracked
1955
Median Year Built
$354K
Median Assessed Value
4%
FEMA Flood Zone
1.43M
NEP Data Facts Tracked
Zone 1
Radon Zone
Click any parcel to view intelligence
Ansonia, CTInc. 1889
Ansonia is a small city in the Naugatuck River Valley, with a dense downtown built around the copper and brass manufacturing that once drove the local economy. The housing stock is predominantly multi-family near the center, with suburban development on the surrounding hillsides.
For property professionals, Ansonia is an affordable urban market with a dense, older housing stock and the Naugatuck River creating flood zone exposure through the center.
Risk Profile
FEMA flood zones, fire protection grades, radon — parcel by parcel
FEMA Flood Zones
211 properties (4%) are in FEMA Special Flood Hazard Areas, where flood insurance is required for federally-backed mortgages.
X
5,576
AE
202
A
9
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
2,036
Grade B
3,240
Grade C
478
Grade D
30
Grade E
3
Zone 1
Radon Risk
123 mph
Design Wind Speed
ASCE 7 standard
30 psf
Ground Snow Load
ASCE 7 standard
Relatively Low
FEMA Risk Index
NRI composite rating
The Property Landscape
5,787 properties · Median year built 1955 · Avg 2,059 sf
Property Types
Single Family
5,158
Other
345
Institutional
125
Mixed Use
110
Two-Family
25
Residential Other
9
Multi-Family
9
Three-Family
4
Agricultural / Open Space
2
Construction by Era
Pre-1800
8
1800-1849
19
1850-1899
398
1900-1949
1,516
1950-1979
2,017
1980-1999
493
2000+
216
Market Activity
Recorded transactions from Naugatuck Valley Registry of Deeds
0%
Owner-Occupied
NE Provenance tracks recorded deeds, mortgages, and liens for 75% of Ansonia properties. Ownership intelligence includes transaction history, entity detection, portfolio identification, and lien analysis — assembled from public registry records into a single property-level profile.
Living in Ansonia
Naugatuck Valley · Connecticut
Zip Codes0640106483
18,918
Population
2020 Census
5,787
Properties
$354K
Median Assessed
0%
Owner-Occupied
6.0
Square Miles
Ansonia covers 6.0 square miles in Naugatuck Valley, Connecticut. The median assessed property value is $354K.
Single-family homes account for 5,158 of Ansonia's 5,787 properties. About 0% of properties are owner-occupied.
Assessed values range widely — the middle 50% of properties fall between $18K and $359K. For professionals working in this market, the value spread tells you a lot about what you'll encounter door to door.
Most of Ansonia (92%) is on municipal sewer. Electric service is provided by UNITED ILLUMINATING CO. 1,430 properties have identified commercial activity — restaurants, retail, professional offices, and services that give Ansonia its character.
Environmental note: Ansonia has an average EPA lead paint indicator at the 71th percentile nationally, consistent with 425 properties built before 1900 when lead paint was standard. 4,742 properties exceed at least one EPA environmental justice threshold — a factor in lending compliance and environmental due diligence.
What Ansonia Property Intelligence Means for Professionals
Insurance & Underwriting
Ansonia's fire protection grade distribution (2,036 Grade A, 3,240 Grade B) directly affects premium calculation. Parcel-level hazard data provides the granularity that ZIP-level aggregation misses.
Insurance solutionsReal Estate & Appraisal
Ansonia's 9 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. 4% of Ansonia 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 Ansonia property intelligence.
5,787 Ansonia 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/ansonia-ct. For references or attribution, please link back to this page or neprovenance.com. Thank you, we appreciate it.