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Triplex (3 Units, Any Combination)Residential
Last sold for $390,000 on Oct 6, 2017

310 OLD MILL LN

PORTSMOUTH, RI 02871
6
Beds
3
Baths
3,099 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.81 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
13
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$390,000 · Oct 6, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,064 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$531,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$226,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$305,300

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.35
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
7
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
55
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
86
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
28
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Triplex (3 Units, Any Combination)
CountyNEWPORT
Lot (acres)The size of the land the home sits on, from county records.0.81
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Portsmouth Middle SchoolA
Middle · Grades 5–8 · 3.5 mi
E
Melville Elementary SchoolA+
Elementary · Grades KG–4 · 4.6 mi
H
Portsmouth High SchoolA
High · Grades 9–12 · 6.3 mi

District: Portsmouth School District

Neighborhood · ZIP 02871These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.60

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.16,919
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.620 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,631
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,136
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

310 Old Mill Ln measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Bigger than 92% of homes in Portsmouth 02871
  • Has a bigger lot than 85% of homes in Portsmouth 02871
  • Older than 96% of homes in Portsmouth 02871

How it measures up in Portsmouth 02871

The dot is this home. The mark in the middle is the typical home in Portsmouth 02871.

Living area3,099 ft²
SmallerTypical 1,626 ft²Bigger

Bigger than 92% of homes nearby

Lot size0.81 ac
SmallerTypical 0.42 acBigger

Bigger than 85% of homes nearby

Year built1900
OlderTypical 1976Newer

Newer than 4% of homes nearby

How 310 Old Mill Ln ranks against every home in each area.
MeasureThis homePortsmouth 02871Newport County
Living areabigger than3,099 ft²92% of homes90% of homes
Lot sizebigger than0.81 ac85% of homes78% of homes
Year builtnewer than19004% of homes15% of homes

About 310 Old Mill Ln

When did 310 Old Mill Ln, Portsmouth, RI last sell?

310 Old Mill Ln, Portsmouth, RI last sold on Oct 6, 2017 for $390,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 310 Old Mill Ln, Portsmouth, RI?

310 Old Mill Ln, Portsmouth, RI has 6 bedrooms, 3 bathrooms, 3,099 square feet of living space and a 0.81-acre lot.

When was 310 Old Mill Ln, Portsmouth, RI built?

310 Old Mill Ln, Portsmouth, RI was built in 1900, making it 126 years old. The building has 3 stories.

What schools serve 310 Old Mill Ln, Portsmouth, RI?

310 Old Mill Ln, Portsmouth, RI is assigned to Portsmouth Middle School (middle), rated A; Melville Elementary School (elementary), rated A+; Portsmouth High School (high), rated A. All sit in Portsmouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 310 Old Mill Ln, Portsmouth, RI compare to other homes in Portsmouth 02871?

Among the 7,733 homes in Portsmouth 02871, it is bigger than 92% of them (3,099 ft² against a typical 1,626 ft²), its lot is bigger than 85% of them (0.81 ac against a typical 0.42 ac) and it is newer than 4% of them (1900 against a typical 1976). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 310 Old Mill Ln, Portsmouth, RI?

The 2025 property tax bill for 310 Old Mill Ln, Portsmouth, RI was $7,064. The county assessed it at $531,900.

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