New Construction Homes in Castro Valley, CA

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California Regional Multiple Listing Service (CRMLS): The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional. Based on information from California Regional Multiple Listing Service, Inc. as of 2026-09-25 08:31:15 UTC and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
Listing information ©2026 California Regional Multiple Listing Service, Inc®. All Rights Reserved. Last Updated: 2026-09-25 08:31:15 UTC
Contra Costa Association of REALTORS: Bay East ©2026. CCAR ©2026. bridgeMLS ©2026. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, or CCAR MLS, or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Castro Valley housing market

September 2026 · This period is still settling

Selling at 101.3% of asking price

Buyers here are paying above asking. MLS · 37 sales · as of Sep 30, 2026

Homes that sold · County records, as of Sep 16, 2026

Median sale price: $1,375,000$997,500–$1,772,500 typical range
Price per sq. ft.: $615
Sales: 23
Paid in cash: 21.7%

Homes on the market · MLS, as of Sep 27, 2026

Median list price: $1,094,000
Homes for sale: 64

Price trend · Assessor repeat sales, as of Sep 30, 2026

Year-over-year: 11.1%

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 11, 2026

Median home size: 1,792 sq. ft.

Castro Valley, CA community profile

Area: 73.9 sq. mi.

Source: HJN community data

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Listing data & MLS disclosures

Castro Valley housing market

Homes that sold · County records, as of Sep 16, 2026

Homes on the market · MLS, as of Sep 27, 2026

Price trend · Assessor repeat sales, as of Sep 30, 2026

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 11, 2026

Castro Valley, CA community profile

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Listing data & MLS disclosures

Castro Valley, CA community profile

Castro Valley housing market

Homes that sold · County records, as of Sep 16, 2026

Homes on the market · MLS, as of Sep 27, 2026

Price trend · Assessor repeat sales, as of Sep 30, 2026

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 11, 2026