Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$411,312$330 / 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 $245,000 on Oct 26, 2018

18 FLAGG RD

ROCHESTER, NH 03839
3
Beds
1.5
Baths
1,248 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.
0.83 ac
Lot SizeThe size of the land the home sits on, from county records.
1995
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$411K
$386K low$436K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$245,000 · Oct 26, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,493 (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.$424,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$108,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$316,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$232,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$381,520

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
CountySTRAFFORD
Lot (acres)The size of the land the home sits on, from county records.0.83
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.Metal
HeatingThe type of heating system in the home.Hot Water
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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.

E
Gonic Elementary SchoolB-
Elementary · Grades KG–5 · 1.4 mi
M
Rochester Middle SchoolD+
Middle · Grades 6–8 · 2.6 mi
H
Spaulding High SchoolC+
High · Grades 9–12 · 4.0 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%

Owner Tools

Do you own this home?
Claim this home

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

18 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 less than 75% of homes in Strafford County
  • Costs more per square foot than 80% of homes in Rochester 03839
  • Smaller than 71% of homes in Strafford County
  • Newer than 69% of homes in Strafford County

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$747K

This home is worth more than 49% 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$411,312
CheaperTypical $415,136Pricier

Pricier than 49% of homes nearby

Price per ft²$330
CheaperTypical $286Pricier

Pricier than 80% of homes nearby

Living area1,248 ft²
SmallerTypical 1,344 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.83 ac
SmallerTypical 0.63 acBigger

Bigger than 56% of homes nearby

Year built1995
OlderTypical 1987Newer

Newer than 66% of homes nearby

How 18 Flagg Rd ranks against every home in each area.
MeasureThis homeRochester 03839Strafford County
Estimated valuepricier than$411,31249% of homes25% of homes
Price per ft²pricier than$33080% of homes65% of homes
Living areabigger than1,248 ft²44% of homes29% of homes
Lot sizebigger than0.83 ac56% of homes54% of homes
Year builtnewer than199566% of homes69% of homes

About 18 Flagg Rd

How much is 18 Flagg Rd, Rochester, NH worth?

The TopHap Estimate for 18 Flagg Rd, Rochester, NH is $411,312 as of Sep 24, 2026. The likely range is $386,245 to $436,379. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Flagg Rd, Rochester, NH last sell?

18 Flagg Rd, Rochester, NH last sold on Oct 26, 2018 for $245,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 18 Flagg Rd, Rochester, NH?

18 Flagg Rd, Rochester, NH has 3 bedrooms, 1.5 bathrooms, 1,248 square feet of living space and a 0.83-acre lot.

When was 18 Flagg Rd, Rochester, NH built?

18 Flagg Rd, Rochester, NH was built in 1995, making it 31 years old. It is a ranch home. The building has 1 story.

What schools serve 18 Flagg Rd, Rochester, NH?

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

How does 18 Flagg Rd, Rochester, NH compare to other homes in Rochester 03839?

Among the 1,428 homes in Rochester 03839, it is worth more than 49% of them ($411,312 against a typical $415,136), its price per square foot is higher than 80% of them ($330 against a typical $286), it is bigger than 44% of them (1,248 ft² against a typical 1,344 ft²), its lot is bigger than 56% of them (0.83 ac against a typical 0.63 ac) and it is newer than 66% of them (1995 against a typical 1987). Measured against all of Strafford County, it is worth more than 25% 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 18 Flagg Rd, Rochester, NH?

The 2025 property tax bill for 18 Flagg Rd, Rochester, NH was $6,493. The county assessed it at $424,400.

More homes on Flagg Rd

Closest homes

More homes in Rochester 03839

Assigned schools

Explore the area

See this home in context

Open 18 Flagg Rd on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map