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Single Family ResidenceResidential
$494,199$275 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $380,000 on Aug 19, 2022

100 FLAGG RD

ROCHESTER, NH 03839
3
Beds
1
Baths
1,800 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.
1.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$494K
$466K low$522K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$380,000 · Aug 19, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,882 (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.$319,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$104,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$214,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$193,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$454,005

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.87 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

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
CountySTRAFFORD
Lot (acres)The size of the land the home sits on, from county records.1.19
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Space
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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.

E
Gonic Elementary SchoolC-
Elementary · Grades KG–5 · 1.5 mi
M
Rochester Middle SchoolF
Middle · Grades 6–8 · 2.4 mi
H
Spaulding High SchoolD
High · Grades 9–12 · 3.8 mi

District: Rochester School District

Neighborhood · ZIP 03839These 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.129
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.107

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
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.4,004
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.531 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,751
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,512
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

100 Flagg 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.

  • Worth more than 77% of homes in Rochester 03839
  • Costs less per square foot than 67% of homes in Strafford County
  • Bigger than 72% of homes in Rochester 03839
  • Has a bigger lot than 66% of homes in Rochester 03839

What homes are worth in Rochester 03839

Each bar is how many homes fall in that price range. The marker is this home.

This home
$243K$736K

This home is worth more than 77% of homes in Rochester 03839.

How it measures up in Rochester 03839

The dot is this home. The mark in the middle is the typical home in Rochester 03839.

Estimated value$494,199
CheaperTypical $414,027Pricier

Pricier than 77% of homes nearby

Price per ft²$275
CheaperTypical $286Pricier

Pricier than 39% of homes nearby

Living area1,800 ft²
SmallerTypical 1,352 ft²Bigger

Bigger than 72% of homes nearby

Lot size1.19 ac
SmallerTypical 0.63 acBigger

Bigger than 66% of homes nearby

Year built1987
OlderTypical 1987Newer

Newer than 52% of homes nearby

How 100 Flagg Rd ranks against every home in each area.
MeasureThis homeRochester 03839Strafford County
Estimated valuepricier than$494,19977% of homes47% of homes
Price per ft²pricier than$27539% of homes33% of homes
Living areabigger than1,800 ft²72% of homes58% of homes
Lot sizebigger than1.19 ac66% of homes64% of homes
Year builtnewer than198752% of homes61% of homes

About 100 Flagg Rd

How much is 100 Flagg Rd, Rochester, NH worth?

The TopHap Estimate for 100 Flagg Rd, Rochester, NH is $494,199 as of Sep 24, 2026. The likely range is $466,085 to $522,313. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 Flagg Rd, Rochester, NH last sell?

100 Flagg Rd, Rochester, NH last sold on Aug 19, 2022 for $380,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 100 Flagg Rd, Rochester, NH?

100 Flagg Rd, Rochester, NH has 3 bedrooms, 1 bathrooms, 1,800 square feet of living space and a 1.19-acre lot.

When was 100 Flagg Rd, Rochester, NH built?

100 Flagg Rd, Rochester, NH was built in 1987, making it 39 years old. The building has 2 stories.

What schools serve 100 Flagg Rd, Rochester, NH?

100 Flagg Rd, Rochester, NH is assigned to Gonic Elementary School (elementary), rated C-; Rochester Middle School (middle), rated F; Spaulding High School (high), rated D. All sit in Rochester School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 100 Flagg Rd, Rochester, NH compare to other homes in Rochester 03839?

Among the 1,428 homes in Rochester 03839, it is worth more than 77% of them ($494,199 against a typical $414,027), its price per square foot is higher than 39% of them ($275 against a typical $286), it is bigger than 72% of them (1,800 ft² against a typical 1,352 ft²), its lot is bigger than 66% of them (1.19 ac against a typical 0.63 ac) and it is newer than 52% of them (1987 against a typical 1987). Measured against all of Strafford County, it is worth more than 47% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 100 Flagg Rd, Rochester, NH?

The 2025 property tax bill for 100 Flagg Rd, Rochester, NH was $4,882. The county assessed it at $319,100.

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