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Single Family ResidenceResidential
Last sold for $275,000 on Oct 12, 2023

518 UPPER MAD RIVER RD

THORNTON, NH 03285
1
Beds
1
Baths
800 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.
1.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1939
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$275,000 · Oct 12, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,929 (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.$249,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$114,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$135,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$257,925

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.33
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
49
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
96
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
17
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyGRAFTON
Lot (acres)The size of the land the home sits on, from county records.1.21
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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.

Foreclosure Filings(1)

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

E
Thornton Central SchoolB+
Elementary · Grades KG–8 · 3.1 mi
H
Plymouth Regional High SchoolB-
High · Grades 9–12 · 9.6 mi

District: Thornton School District

Neighborhood · ZIP 03285These 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.128
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.111

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.66%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.2,766
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.53 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,166
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,742
Average tempThe average temperature here across a full year.42°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.33%

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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

518 Upper Mad River Rd 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.

  • Smaller than 95% of homes in Thornton 03285
  • Older than 94% of homes in Thornton 03285

How it measures up in Thornton 03285

The dot is this home. The mark in the middle is the typical home in Thornton 03285.

Living area800 ft²
SmallerTypical 1,734 ft²Bigger

Bigger than 5% of homes nearby

Lot size1.21 ac
SmallerTypical 1.5 acBigger

Bigger than 38% of homes nearby

Year built1939
OlderTypical 1986Newer

Newer than 6% of homes nearby

How 518 Upper Mad River Rd ranks against every home in each area.
MeasureThis homeThornton 03285Grafton County
Living areabigger than800 ft²5% of homes12% of homes
Lot sizebigger than1.21 ac38% of homes47% of homes
Year builtnewer than19396% of homes19% of homes

About 518 Upper Mad River Rd

When did 518 Upper Mad River Rd, Thornton, NH last sell?

518 Upper Mad River Rd, Thornton, NH last sold on Oct 12, 2023 for $275,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 518 Upper Mad River Rd, Thornton, NH?

518 Upper Mad River Rd, Thornton, NH has 1 bedrooms, 1 bathrooms, 800 square feet of living space and a 1.21-acre lot.

When was 518 Upper Mad River Rd, Thornton, NH built?

518 Upper Mad River Rd, Thornton, NH was built in 1939, making it 87 years old. It is a ranch home. The building has 1 story.

What schools serve 518 Upper Mad River Rd, Thornton, NH?

518 Upper Mad River Rd, Thornton, NH is assigned to Thornton Central School (elementary), rated B+; Plymouth Regional High School (high), rated B-. All sit in Thornton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 518 Upper Mad River Rd, Thornton, NH compare to other homes in Thornton 03285?

Among the 1,857 homes in Thornton 03285, it is bigger than 5% of them (800 ft² against a typical 1,734 ft²), its lot is bigger than 38% of them (1.21 ac against a typical 1.5 ac) and it is newer than 6% of them (1939 against a typical 1986). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 518 Upper Mad River Rd, Thornton, NH?

The 2025 property tax bill for 518 Upper Mad River Rd, Thornton, NH was $2,929. The county assessed it at $249,500.

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