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  • 321 Castle Crest Rd

321 Castle Crest Rd, Alamo, CA 94507

$2,524,900 Approx. USD 5 beds, 5 baths
3,962 sqft

Reduced by $163,100 on 9/5/2026
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Photo of Lisa Cooper

Lisa Cooper REALTOR® - Sales Associate 949-300-1236 m
Lic#: 01084345
NRDS ID: 205500994
lisa@lisacooper.com Text Me
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Lic#: 01084345
NRDS ID: 205500994
lisa@lisacooper.com Monarch Beach Office
2 Ritz Carlton Drive, Ste, 201
Monarch Beach, CA 92629
Phone: 949-443-2000
Fax: 949-443-2209
 Monarch Beach 2 Ritz Carlton Drive, Ste, 201
Monarch Beach, CA 92629
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Fax: 949-443-2209
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Listing Agent


Carolyn Gwynn | carolyngwynn@compass.com
Lic#: 01888136
Broker: Courtesy of Compass
Phone: 925-336-7525

Agent Remarks

A comprehensive transformation by Alamo-based RSR Development, bringing together sophisticated design, significant structural engineering, and high-quality construction. Direct Mt. Diablo views, expansive windows, and energy efficiency. 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 designed by noted Architect Martin Hammer. 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 remodeled 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.

Listing Details

Property type: Single Family Residence (Single Family)
Status: Active
MLS# 41141765
List price is $2,524,900 Reduced by $163,100 on 9/5/2026
Price: $2,524,900
Beds: 5
Baths: 5 (4 full) (1 half)
None fireplaces
Built in 1991
3,962 sqft
2 stories
1.17 acres
Lot size: 1.1700
Subdivision: WEST SIDE ALAMO
County: Contra Costa
Property style: Contemporary
Construction: Wood Siding
Interior features: Eat-in Kitchen
Appliances: Gas Water Heater,Dryer,Washer
Parking description: Garage
Lot description: Cul-De-Sac,Sloped Down,Front Yard
Heating/cooling: Central Air
Heating description: Forced Air

Last Updated: 9/5/2026

 Days On Market (DOM): 55

 Find more Alamo homes and real estate

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The style of this listing is Contemporary.
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Lat/Long: 37.864105, -122.049050.
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DISCLAIMER: There is NO WARRANTY, expressed or implied, for the accuracy of this information or its applicability to your financial situation. Please consult your financial and/or tax advisor. GET PRE-APPROVED The loan's interest rate will depend upon the specific characteristics of the loan transaction and credit profile up to the time of closing.

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Photo of Lisa Cooper

Lisa Cooper REALTOR® - Sales Associate 949-300-1236 m
Lic#: 01084345
NRDS ID: 205500994
lisa@lisacooper.com Text Me
Call My Cell
Lic#: 01084345
NRDS ID: 205500994
lisa@lisacooper.com
Monarch Beach Office
2 Ritz Carlton Drive, Ste, 201
Monarch Beach, CA 92629
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