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  • 321 Castle Crest Rd

321 Castle Crest Rd, Alamo, CA 94507

$2,688,000 Approx. USD 5 beds, 5 baths
3,962 sqft

Reduced by $110,000 on 8/8/2026 Open House 8/16 1:00 PM - 4:00 PM
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Photo of Melissa Ellis

Melissa Ellis Manager 310-963-9826 m
310-829-0629 o
Lic#: 01905986
NRDS ID: 175524822
MelissaEllis@bhhscal.com Text Me
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Lic#: 01905986
NRDS ID: 175524822
MelissaEllis@bhhscal.com Santa Monica Office
3130 Wilshire Blvd, Suite 100
Santa Monica, CA 90403
Phone: 310-829-0629
Fax: 310-829-7541
 Santa Monica 3130 Wilshire Blvd, Suite 100
Santa Monica, CA 90403
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Listing Agent


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

Agent Remarks

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

Listing Details

Property type: Single Family Residence (Single Family)
Status: Active
MLS# 41141765
List price is $2,688,000 Reduced by $110,000 on 8/8/2026
Price: $2,688,000
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: 8/12/2026

 Days On Market (DOM): 28

 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 Melissa Ellis

Melissa Ellis Manager 310-963-9826 m
310-829-0629 o
Lic#: 01905986
NRDS ID: 175524822
MelissaEllis@bhhscal.com Text Me
Call My Cell
Call My Office
Lic#: 01905986
NRDS ID: 175524822
MelissaEllis@bhhscal.com
Santa Monica Office
3130 Wilshire Blvd, Suite 100
Santa Monica, CA 90403
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