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Before you start looking
The buying timeline

Afford it

Today's mortgage rates
Mortgage calculator
How much can I afford?
Get pre-approved

Make the deal

Writing a winning offer
Inspections & appraisals
Closing costs, itemized
Find a buyer's agent

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New Construction Homes in Newcastle, CA

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1 Listing

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1 listing

New Construction Homes in Newcastle, CA

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1 Listing

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New Construction Homes in Newcastle, CA

1 Listing

Your local brokerage

Thomas O'Leary

Realty.com

Lic. #01840925

Call Thomas

51Active
$2,125,000
3 bd · 4 ba · 4,466 sqft

3599 Hector Rd, Newcastle, CA

Jonathan Minerick · HOMECOIN.COM

Your local brokerage

Thomas O'Leary

Realty.com

Lic. #01840925

Call Thomas

Listing data & MLS disclosures

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.

About New Construction Homes in Newcastle, CA

New Construction Homes in Newcastle, CA: 1 active listing as of October 19, 2026, 17:11 UTC.

Newcastle housing market

September 2026

Homes that sold · County records, as of Sep 29, 2026

Median sale price: $1,213,000$893,500–$1,607,500 typical range
Price per sq. ft.: $518
Sales: 11
Paid in cash: 18.2%

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

Median list price: $1,548,500
Homes for sale: 20

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

Newcastle, CA community profile

Area: 25.5 sq. mi.

Source: HJN community data

L. Custen Realty, Inc. d/b/a Realty.com/L. Custen Realty CT, LLC d/b/a Realty.com (Tom O’Leary-Broker)(CT properties only), 8323 Southwest Freeway, Suite 900, Houston, Texas 77074

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Listing data is derived from various Multiple Listing Services; each source MLS and its required disclaimer are shown with the listings on the applicable page. Realty.com is an independently owned and operated brokerage.

Your local brokerage

Thomas O'Leary

Realty.com

Lic. #01840925

Call Thomas

Your local brokerage

Thomas O'Leary

Realty.com

Lic. #01840925

Call Thomas

Listing data & MLS disclosures

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.

Newcastle, CA community profile

Area: 25.5 sq. mi.

Source: HJN community data

Newcastle housing market

September 2026

Homes that sold · County records, as of Sep 29, 2026

Median sale price: $1,213,000$893,500–$1,607,500 typical range
Price per sq. ft.: $518
Sales: 11
Paid in cash: 18.2%

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

Median list price: $1,548,500
Homes for sale: 20

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

Median home size: 2,228 sq. ft.

New Construction Homes in Newcastle, CA