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321 Castle Crest Rd, 
Alamo, CA 94507

$2,688,000


5

Beds


5

Baths


3,962

Sq Ft


Single Family

Active

Listed by

Carolyn Gwynn

Compass

carolyn@thegwynngroup.com

Last updated:

August 13, 2026, 02:32 PM

MLS#

41141765

Source:

Bay East CCAR bridgeMLS

About This Home

321 Castle Crest Rd

A modern retreat with direct Mt. Diablo views, expansive windows, elevated materials, energy efficiency, and everyday livability. The entry pivot door sets the tone immediately, opening to the huge view-framing window capturing the mountain through floating maple stair treads. A striking architectural moment. The main living level centers around an open gathering area with soaring vaulted wood ceilings, stunning kitchen representing sea, earth and sky, formal dining, exposed beams, expansive Fleetwood windows, and access to an outdoor seating area overlooking Mt. Diablo. The kitchen anchors the home with quartzite island, Wolf/Sub-Zero appliances, steam oven, custom hood and walk-in pantry. A refined mix of stone, glass, metal, and natural warmth. Extensively reimodeled with an emphasis on architecture, systems, and symmetry, the home includes steel beams, double shear, owned solar, updated HVAC, maple hardwood, modern railings, upgraded lighting, and a media room / 5th bedroom. Set on 1.17 acres on one of Alamo’s friendliest streets, the flexible floor plan offers two ensuite bedrooms with one on the main level, two living areas, and easy access to two 2-car garages (total 4). Close to downtown WC, BART, Iron Horse Trail, and 680. OPEN SUNDAY 1-4pm

Home Facts

Single Family

5 Baths

5 Bedrooms

Built in 1991

Subdivision & Development:

WEST SIDE ALAMO

Price Summary

2,688,000

$678 per Sq. Ft.

MLS #:

41141765

Last Updated:

August 13, 2026, 02:32 PM

Added:

a month ago


Rooms & Interior

Bedrooms

Total Bedrooms:

5

Bathrooms

Total Bathrooms:

5

Full Bathrooms:

4

Interior

Living Area:

3,962 Sq. Ft.


Structure

Structure

Architectural Style:

Contemporary, Single Family Residence

Building Area:

3,962 Sq. Ft.

Year Built:

1991


Lot

Lot Size (Sq. Ft):

50,965


Finances & Disclosures

Finances

Price:

$2,688,000

Price per Sq. Ft:

$678 per Sq. Ft.

MLS Logo
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. Data last updated at August 13, 2026

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.