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Single Family ResidenceResidential
$488,173$363 / 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 Sep 24, 2026
Last sold for $115,000 on Mar 6, 2018

517 PENSTOCK DR

GRASS VALLEY, CA 95945
3
Beds
2
Baths
1,344 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$488K
$463K low$514K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$115,000 · Mar 6, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,163 (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.$388,790 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$75,435
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$313,355
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$381,167
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$424,620

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.Traditional/Old
CountyNEVADA
Lot (acres)The size of the land the home sits on, from county records.0.13
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 1,344 ft²

Transaction History(9)

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
Bell Hill AcademyB+
Elementary · Grades KG–4 · 0.5 mi
M
Lyman Gilmore Middle SchoolC
Middle · Grades 5–8 · 0.6 mi
H
Nevada Union High SchoolB
High · Grades 9–12 · 2.2 mi

District: Grass Valley Elementary School District

Neighborhood · ZIP 95945These 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.108
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 100.105

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.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.24,965
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.362 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$66,899
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,570
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.54 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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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

517 Penstock Dr 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 72% of homes in Nevada County
  • Costs more per square foot than 68% of homes in Grass Valley 95945
  • Smaller than 75% of homes in Nevada County
  • Has a smaller lot than 92% of homes in Nevada County
  • Newer than 67% of homes in Grass Valley 95945

What homes are worth in Grass Valley 95945

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

This home
$260K$1.1M

This home is worth more than 45% of homes in Grass Valley 95945.

How it measures up in Grass Valley 95945

The dot is this home. The mark in the middle is the typical home in Grass Valley 95945.

Estimated value$488,173
CheaperTypical $508,484Pricier

Pricier than 45% of homes nearby

Price per ft²$363
CheaperTypical $338Pricier

Pricier than 68% of homes nearby

Living area1,344 ft²
SmallerTypical 1,517 ft²Bigger

Bigger than 36% of homes nearby

Lot size0.13 ac
SmallerTypical 0.64 acBigger

Bigger than 12% of homes nearby

Year built1986
OlderTypical 1977Newer

Newer than 67% of homes nearby

How 517 Penstock Dr ranks against every home in each area.
MeasureThis homeGrass Valley 95945Nevada County
Estimated valuepricier than$488,17345% of homes28% of homes
Price per ft²pricier than$36368% of homes54% of homes
Living areabigger than1,344 ft²36% of homes25% of homes
Lot sizebigger than0.13 ac12% of homes8% of homes
Year builtnewer than198667% of homes55% of homes

About 517 Penstock Dr

How much is 517 Penstock Dr, Grass Valley, CA worth?

The TopHap Estimate for 517 Penstock Dr, Grass Valley, CA is $488,173 as of Sep 24, 2026. The likely range is $462,785 to $513,561. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 517 Penstock Dr, Grass Valley, CA last sell?

517 Penstock Dr, Grass Valley, CA last sold on Mar 6, 2018 for $115,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 517 Penstock Dr, Grass Valley, CA?

517 Penstock Dr, Grass Valley, CA has 3 bedrooms, 2 bathrooms, 1,344 square feet of living space and a 0.13-acre lot.

When was 517 Penstock Dr, Grass Valley, CA built?

517 Penstock Dr, Grass Valley, CA was built in 1986, making it 40 years old. It is a traditional/old home. The building has 1 story.

What schools serve 517 Penstock Dr, Grass Valley, CA?

517 Penstock Dr, Grass Valley, CA is assigned to Bell Hill Academy (elementary), rated B+; Lyman Gilmore Middle School (middle), rated C; Nevada Union High School (high), rated B. All sit in Grass Valley Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 517 Penstock Dr, Grass Valley, CA compare to other homes in Grass Valley 95945?

Among the 9,192 homes in Grass Valley 95945, it is worth more than 45% of them ($488,173 against a typical $508,484), its price per square foot is higher than 68% of them ($363 against a typical $338), it is bigger than 36% of them (1,344 ft² against a typical 1,517 ft²), its lot is bigger than 12% of them (0.13 ac against a typical 0.64 ac) and it is newer than 67% of them (1986 against a typical 1977). Measured against all of Nevada County, it is worth more than 28% 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 517 Penstock Dr, Grass Valley, CA?

The 2025 property tax bill for 517 Penstock Dr, Grass Valley, CA was $4,163. The county assessed it at $388,790.

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