NE Provenance

139 Thornton St

Portsmouth, NH 03801

residentialSingle Family
Owner
Jon...
Owner Type
Individual
Tenure
22 yrs
Assessed
$747,300
Built
1890
Sq Ft
1,896
Lot
0.08 ac
Bed/Bath
4/2
Type
Single Family
Elevated Risks15ConditionC5Fire GradeBPermits1Last PermitJul 2011FloodX

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139 Thornton St, Portsmouth, NH 03801— Property Report

Home& Property Details

139 Thornton St is a Conventional single family built in 1890 located in Portsmouth, Rockingham County, NH. The home has 1,896 square feet of living area on a 0.08-acre lot. The home has 4 bedrooms, 2 bathrooms across 2 stories.

Flood Zone & Natural Hazard Assessment

139 Thornton St is in FEMA flood zone X. Zone X is outside the Special Flood Hazard Area, meaning the property has minimal flood risk according to FEMA mapping. The FEMA National Risk Index composite rating for this area is Very Low. The ASCE 7-22 design wind speed for this location is 112 mph. The ground snow load is 50 psf. The EPA radon zone is 1 (highest potential).

Fire Protection

NE Provenance rates the fire protection for 139 Thornton St at Grade B (Strong fire protection access). The nearest fire station, Portsmouth - Central Fire Station, is 0.8 miles away. This grade reflects fire station proximity, department capabilities, hydrant coverage, and municipal water infrastructure. Properties with Grade A or B typically receive favorable insurance rates due to strong fire protection infrastructure.

Building Permits & Property History

Municipal records show 1 building permit on file for 139 Thornton St. The most recent permit was filed July 14, 2011. The current municipal assessment is $747,300, with $328,800 attributed to land and $418,500 to improvements. The property last sold on January 16, 2004 for $271,000.

PortsmouthNeighborhood & Community

139 Thornton St is located in Portsmouth, Rockingham County, NH. The property is zoned GRA (General Residence A). The median home value in this census tract is $668,400. Median household income is $106,661. The owner-occupancy rate in the surrounding area is 67%. The property is served by the Portsmouth school district.

Full Property Intelligence Report

The complete NE Provenance report for 139 Thornton St, Portsmouth, NH includes over 430 data attributes sourced from 140+ public and proprietary datasets. The full report covers building construction and materials, NEP Condition Estimate derived from permit history, system ages for roof, electrical, plumbing, and HVAC, complete ownership and deed chain with transaction classification, FEMA flood and coastal hazard analysis, environmental contamination screening, and neighborhood demographics. Available as a professional property wallet, PDF report, or structured data export.