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Large 3+ acre lot for sale in the well-established and sought-after Eichler neighborhood in the Castro Valley Hills. The Owners have taken the first step to Pre-Screen the lot for an SB 9 Development to allow for BOTH an Urban lot split (2 lots) AND the development of up to two units per lot (a total of 4 units). SB 9Pre-Screening has been completed by the County, and the property is considered Preliminarily Eligible. This is not a guarantee for final approval. Buyer would need to continue the process with the County to determine final eligibility and, if possible, to obtain final approval. Buyer is advised to contact the County for all rules and requirements and to satisfy themselves. Two potential buildable areas that cannot be seen from the street. --- This land has been privately owned since it was sold by Eichler Homes, Inc. in 1960. This is a RARE and AMAZING opportunity to build your dream home. Do you love Mid-Mod architecture? A fabulous Mid-Century Modern-style home with an incredible ADU would fit right into one of Castro Valley's most popular Mid-Century Modern neighborhoods. Now is your chance to build a new home in a well-established neighborhood with an exceptional school district. Time to make your dreams come true.
Listing agent: River Collins DRE #01312567 River@4RiversRealty.com, Listing office: 4 Rivers Realty, Inc.
MLS data updated 10/19/2026, 8:56:58 PM PT
Source: CRMLS, MLS #: 41090599
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Apr 21, 2026
Prices use the left axis; mortgage rates use the right. Hover, tap, or focus the chart and use the arrow keys. Red SOLD badges mark recorded sales.
This home · nearest recorded event
$700,000Closed sale · Apr 21, 2026ZIP 94552 · Apr 2026
No monthly averageAt least 3 eligible sales in this month are required.30-year fixed mortgage benchmark
No weekly rateNo published rate within 7 days of this date.ZIP averages use publicly displayable closed sales from our licensed MLS feed, matched to the same ZIP and exact property type. Months with fewer than 3 sales are omitted; the current month is incomplete. Lines connect available monthly observations across gaps and do not represent measured prices in missing months. These averages are not adjusted for size, condition, or location within the ZIP, and are not an appraisal. Feed coverage may not include every sale. All available shows the available home and ZIP history, with mortgage rates over the same dates.
Mortgage benchmark: Freddie Mac Primary Mortgage Market Survey®. © Freddie Mac. Weekly national 30-year fixed rates, not APRs or a loan quote. Actual terms vary. Methodology changed in November 2022. The chart does not establish that interest-rate changes caused a home’s price changes.
Lines connect recorded asking and sale prices. They are visual guides, not estimates of the home’s value between those dates.
No earlier records were returned by our current sources. This does not mean the home has never sold.
MLS records may be incomplete. Earlier asking prices are not sale prices.