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CondominiumResidential

21071 Gary Dr

CASTRO VALLEY, CA 94546
0.58 ac
Lot SizeThe size of the land the home sits on, from county records.
1980
Year BuiltThe year the home was originally built, according to county records.
Built 19793 floors37 units1,089–1,318 ft²
$18M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$471K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$421
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-57.4%vs the Castro Valley ZIP median sale $/ft² ($989)

Sales Performance

$460K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
+31.4%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
2.7%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+5.4%per yeartypical hold 6.3 yrsfrom 54 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19881993199920042008201720212026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19881993199920042008201720212026

80 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$435K$488K$541K$594K1,089 ft²1,135 ft²1,181 ft²1,226 ft²1,272 ft²1,318 ft²
2 bd3 bd
Studio
1 unit
2 bed
24 units
3 bed
12 units
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
2 bd · 2 ba · 1,101 ft²
9 units
3 bd · 2 ba · 1,300 ft²
7 units
2 bd · 2 ba · 1,118 ft²
6 units
2 bd · 2 ba · 1,089 ft²
5 units
3 bd · 2 ba · 1,318 ft²
5 units
2 bd · 1.5 ba · 1,118 ft²
4 units
One-off layouts
1 unit

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$435K–$454K
8 units
$455K–$471K
11 units
$475K–$491K
5 units
$502K–$511K
2 units
$538K–$553K
4 units
$557K–$569K
5 units
$585K–$594K
2 units

Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.

Floor 1
$416/ft²
Floor 2
$420/ft²
Floor 3
$431/ft²
Unit lines by $/ft²Condo units stacked vertically share a unit line — the last digits of the unit number (like 05 in 1205, 1305, 1405). Lines share a layout and exposure, so comparing estimated $/ft² by line shows which position in the building commands a premium.
Line ·06
$435/ft²
Line ·10
$431/ft²
Line ·09
$430/ft²
Line ·05
$429/ft²
Line ·04
$418/ft²
Line ·03
$389/ft²

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.54%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.41%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.18.1 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.45%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.28%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$468,025
Median tax billThe middle annual property tax bill among the building's units.$3,783
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit 204Apr 6, 2026$460,000Unit 102Sep 26, 2025$495,000Unit 109Mar 6, 2025$350,000Unit 109Mar 6, 2025$350,000Unit 103Sep 13, 2024$645,000Unit 304Apr 19, 2023$576,000Unit 107Nov 23, 2022$538,000Unit 111Sep 19, 2022$550,000Unit 209May 6, 2022$641,000Unit 209May 6, 2022$641,000

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyALAMEDA
Lot (acres)The size of the land the home sits on, from county records.0.57
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Tile
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Bay

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

M
Bret Harte Middle SchoolC-
Middle · Grades 7–8 · 1.6 mi
H
Hayward High SchoolC+
High · Grades 9–12 · 1.7 mi
E
Fairview Elementary SchoolD
Elementary · Grades KG–6 · 2.2 mi

District: Hayward Unified School District

Neighborhood · ZIP 94546These 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.78
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.657

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.46,776
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,466 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$117,352
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$142,642
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.23 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

21071 Gary Dr # 101
2 bd · 1.5 ba · 1,118 ft²
$468K
21071 Gary Dr # 102
2 bd · 2 ba · 1,118 ft²
$457K
21071 Gary Dr # 103
3 bd · 2 ba · 1,318 ft²
$545K
21071 Gary Dr # 104
2 bd · 2 ba · 1,118 ft²
$475K
21071 Gary Dr # 105
2 bd · 2 ba · 1,089 ft²
$446K
21071 Gary Dr # 106
3 bd · 2 ba · 1,318 ft²
$557K
21071 Gary Dr # 106
$511K
21071 Gary Dr
2 bd · 2 ba · 1,118 ft²
$447K
21071 Gary Dr # 108
2 bd · 2 ba · 1,089 ft²
$455K
21071 Gary Dr # 109
2 bd · 2 ba · 1,118 ft²
$476K
21071 Gary Dr # 109
2 bd · 2 ba · 1,118 ft²
$491K
21071 Gary Dr # 110
3 bd · 2 ba · 1,300 ft²
$557K
21071 Gary Dr # 110
3 bd · 2 ba · 1,300 ft²
$553K
21071 Gary Dr # 111
2 bd · 2 ba · 1,118 ft²
$435K
21071 Gary Dr # 112
2 bd · 1.5 ba · 1,118 ft²
$454K
21071 Gary Dr # 201
2 bd · 1.5 ba · 1,118 ft²
$456K
21071 Gary Dr # 202
2 bd · 2 ba · 1,089 ft²
$477K
21071 Gary Dr # 203
3 bd · 2 ba · 1,318 ft²
$450K
21071 Gary Dr # 204
2 bd · 2 ba · 1,101 ft²
$442K
21071 Gary Dr # 205
2 bd · 2 ba · 1,101 ft²
$484K
21071 Gary Dr # 205
2 bd · 2 ba · 1,101 ft²
$463K
21071 Gary Dr # 206
3 bd · 2 ba · 1,318 ft²
$594K
21071 Gary Dr # 206
3 bd · 2 ba · 1,318 ft²
$569K
21071 Gary Dr # 207
2 bd · 2 ba · 1,089 ft²
$451K
21071 Gary Dr # 208
2 bd · 2 ba · 1,101 ft²
$463K
21071 Gary Dr # 209
2 bd · 2 ba · 1,101 ft²
$469K
21071 Gary Dr # 209
2 bd · 2 ba · 1,101 ft²
$471K
21071 Gary Dr
3 bd · 2 ba · 1,300 ft²
$565K
21071 Gary Dr
3 bd · 2 ba · 1,300 ft²
$565K
21071 Gary Dr # 211
2 bd · 2 ba · 1,089 ft²
$452K
21071 Gary Dr # 212
2 bd · 1.5 ba · 1,118 ft²
$471K
21071 Gary Dr # 303
3 bd · 2 ba · 1,300 ft²
$538K
21071 Gary Dr # 304
2 bd · 2 ba · 1,101 ft²
$469K
21071 Gary Dr # 305
2 bd · 2 ba · 1,101 ft²
$462K
21071 Gary Dr # 305
2 bd · 2 ba · 1,101 ft²
$502K
21071 Gary Dr # 306
3 bd · 2 ba · 1,300 ft²
$585K
21071 Gary Dr # 306
3 bd · 2 ba · 1,300 ft²
$545K

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

About 21071 Gary Dr

How many units are in 21071 Gary Dr, Castro Valley, CA?

21071 Gary Dr, Castro Valley, CA has 37 residential units across 3 floors, built in 1979, according to county assessor records.

What is a unit at 21071 Gary Dr, Castro Valley, CA worth?

The median TopHap Estimate across the 37 units at 21071 Gary Dr, Castro Valley, CA is $471,295. That works out to $421 per square foot. Units run from 1,089 to 1,318 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 21071 Gary Dr, Castro Valley, CA expensive for Castro Valley?

Units at 21071 Gary Dr, Castro Valley, CA carry a median of $421 per square foot, 57% below the Castro Valley median of $989 per square foot.

How often do units sell at 21071 Gary Dr, Castro Valley, CA?

1 units at 21071 Gary Dr, Castro Valley, CA sold in the last 12 months, out of 80 recorded arms-length sales all time. That is a turnover rate of 2.7% of the building per year. The median sale over that period was $460K.

Have units at 21071 Gary Dr, Castro Valley, CA appreciated?

Across 54 repeat sales of the same unit, 21071 Gary Dr, Castro Valley, CA returned a median 5.4% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 6.3 years.

What floor plans does 21071 Gary Dr, Castro Valley, CA have?

The most common plan at 21071 Gary Dr, Castro Valley, CA is a 2-bedroom of 1,101 square feet, repeated 9 times, with a median estimate of $468,979. TopHap identifies 6 recurring plans in the building.

More homes on Gary Dr

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Assigned schools

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