Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$339,878$226 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $192,800 on Jul 15, 2019

18 SYLVAIN ST

ROCHESTER, NH 03867
4
Beds
1
Baths
1,502 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1938
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$340K
$323K low$357K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$192,800 · Jul 15, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,257 (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.$343,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$83,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$260,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$191,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$288,990

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.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.minimal

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.Bungalow
CountySTRAFFORD
Lot (acres)The size of the land the home sits on, from county records.0.20
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.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

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
Maple Street Magnet SchoolD+
Elementary · Grades KG–5 · 0.1 mi
M
Rochester Middle SchoolF
Middle · Grades 6–8 · 0.7 mi
H
Spaulding High SchoolD
High · Grades 9–12 · 0.8 mi

District: Rochester School District

Neighborhood · ZIP 03867These 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.105
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.106

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.22,565
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.760 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$75,085
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$97,264
Average tempThe average temperature here across a full year.46°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.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 Sylvain St 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 89% of homes in Strafford County
  • Costs less per square foot than 88% of homes in Strafford County
  • Has a smaller lot than 87% of homes in Strafford County
  • Older than 83% of homes in Strafford County

What homes are worth in Rochester 03867

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

This home
$226K$691K

This home is worth more than 24% of homes in Rochester 03867.

How it measures up in Rochester 03867

The dot is this home. The mark in the middle is the typical home in Rochester 03867.

Estimated value$339,878
CheaperTypical $413,769Pricier

Pricier than 24% of homes nearby

Price per ft²$226
CheaperTypical $280Pricier

Pricier than 15% of homes nearby

Living area1,502 ft²
SmallerTypical 1,377 ft²Bigger

Bigger than 57% of homes nearby

Lot size0.2 ac
SmallerTypical 0.35 acBigger

Bigger than 25% of homes nearby

Year built1938
OlderTypical 1976Newer

Newer than 21% of homes nearby

How 18 Sylvain St ranks against every home in each area.
MeasureThis homeRochester 03867Strafford County
Estimated valuepricier than$339,87824% of homes11% of homes
Price per ft²pricier than$22615% of homes12% of homes
Living areabigger than1,502 ft²57% of homes42% of homes
Lot sizebigger than0.2 ac25% of homes13% of homes
Year builtnewer than193821% of homes17% of homes

About 18 Sylvain St

How much is 18 Sylvain St, Rochester, NH worth?

The TopHap Estimate for 18 Sylvain St, Rochester, NH is $339,878 as of Oct 21, 2026. The likely range is $322,870 to $356,886. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Sylvain St, Rochester, NH last sell?

18 Sylvain St, Rochester, NH last sold on Jul 15, 2019 for $192,800, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 18 Sylvain St, Rochester, NH?

18 Sylvain St, Rochester, NH has 4 bedrooms, 1 bathrooms, 1,502 square feet of living space and a 0.20-acre lot.

When was 18 Sylvain St, Rochester, NH built?

18 Sylvain St, Rochester, NH was built in 1938, making it 88 years old. It is a bungalow home. The building has 2 stories.

What schools serve 18 Sylvain St, Rochester, NH?

18 Sylvain St, Rochester, NH is assigned to Maple Street Magnet School (elementary), rated D+; 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 18 Sylvain St, Rochester, NH compare to other homes in Rochester 03867?

Among the 7,496 homes in Rochester 03867, it is worth more than 24% of them ($339,878 against a typical $413,769), its price per square foot is higher than 15% of them ($226 against a typical $280), it is bigger than 57% of them (1,502 ft² against a typical 1,377 ft²), its lot is bigger than 25% of them (0.2 ac against a typical 0.35 ac) and it is newer than 21% of them (1938 against a typical 1976). Measured against all of Strafford County, it is worth more than 11% 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 Sylvain St, Rochester, NH?

The 2025 property tax bill for 18 Sylvain St, Rochester, NH was $5,257. The county assessed it at $343,600.

More homes on Sylvain St

Closest homes

More homes in Rochester 03867

Assigned schools

Explore the area

See this home in context

Open 18 Sylvain St 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