OFF MARKET
Google street view image for 21730 Shadyspring Rd, Castro Valley, CA 94546
Off market dec 1986 for $217K
$1,260,308
Est. refi paymentEst. refi $971/mo
3
bd
•
3 ba
•
2,650
sq ft

21730 Shadyspring Rd, Castro Valley, CA 94546

map-entry

About this home

21730 Shadyspring Rd is a 2,650 square foot house on a 7,479 square foot lot with 3 bedrooms and 3 bathrooms. - it last sold on December 18, 1986 for $217,500. Based on Redfin's Castro Valley data, we estimate the home's value is $1,260,308.
Single-familyProperty Type
1979Year Built
7,479 sq ftLot Size
$476Est. Price/Sq.Ft.
Source:Public Records

Redfin Estimate

$1,260,308
$1.0M since sold in December 1986$5,000 since September

This home's estimate is 14.6% higher than the average sale price ($1.10M) of 6 comparable homes.

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Earn from this home

Sell
$1,193,142
Est. take-home

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Refinance
$0
Est. cash available

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Rent
$4,453/mo
Redfin rental estimate

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Market trends in 94546, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price
103.4%

0.6% MoM

Median sale price
$1.1M

$823 MoM

Avg. days on market
18d

3 days MoM

Recently sold homes
75

7 MoM

New listings for sale

Provided by Redfin

Sale history for 21730 Shadyspring Rd

Tax history for 21730 Shadyspring Rd

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Zoning and permits

R1

Single-Family Residence Districts

Single-family residence districts, hereinafter designated as R-1 districts, are established to provide for and protect established neighborhoods of one-family dwellings, and to provide space in suitable locations for additional development of this kind, together with appropriate community facilities and allowance for restricted interim cultivation of the soil compatible with such low-density residential development.
Permitted uses

Include but are not limited to:

  • Housing-Single unit
  • Agriculture-Cropland
  • Agriculture-Grove / orchard

Property details

Around this home

Schools

Fairview Elementary School

Public K-6 • Assigned • 1.7mi

2/10
Bret Harte Middle School

Public 7-8 • Assigned • 1.0mi

4/10
Hayward High School

Public 9-12 • Assigned • 1.2mi

5/10
Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

4/10 Heat Factor

7 days above 88° expected this year, 13 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

7/10 Air Factor

12 unhealthy days expected this year, 12 days in 30 years

Provided by First Street

Historical weather

Castro Valley, CA • 94546
Average low and high temperatures (°F)
63
43
64
46
71
49
69
49
73
53
74
54
75
57
79
57
79
60
77
54
65
48
61
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Sun exposure

In this area, properties receive around 11.2 hours in June and 4.9 hours in December, placing it above the U.S. average for solar exposure.

11.2 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.20M – $1.45M

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Home values near 21730 Shadyspring Rd

Data from public records.

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