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321 Castle Crest RdAlamo, CA 94507

For Sale

$2,798,000

Smart Buyer Rebate $27,980

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 Walnut Creek, BART, trails, the Iron Horse Trail, and 680. Open Sat 1-4pm Sun 1-4pm

Listed by Carolyn Gwynn

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License #01888136

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Compass

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925-336-7525

Last updated July 29, 2026

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Source: bridgeMLS #41141765

Listing Facts

  • TypeSingle-family
  • NeighborhoodWestside
  • Bedrooms5
  • Bathrooms5
  • Days on Prevu17
  • Size3,962 sqft
  • Price per sqft$706

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Air Conditioning
  • Parking
  • Swimming Pool

Location

Mortgage Calculator

Listing History

07/15/2026
Listed by Compass
$2,798,000

Property Details for 321 Castle Crest Rd

Exterior

Construction

  • Roof: Shingle
  • Stories: 2
  • Window Features: Double Pane Windows
  • Year Built: 1991
  • Architectural Style: Contemporary
  • Construction Materials: Wood Siding
  • Exterior Features: Front Yard

Features

  • Patio And Porch Features: Deck
  • View: Las Trampas Foothills, Mt Diablo, Panoramic

Measurements

  • Building Area Total: 3,962
  • Lot Features: Cul-De-Sac, Sloped Down
  • Lot Size Acres: 1.17
  • Lot Size Area: 1
  • Lot Size Square Feet: 50,965
  • Lot Size Units: Acres

Financial

Taxes

  • Parcel Number: 1883920181

Interior

Features

  • Appliances: Dishwasher, Double Oven, Gas Range, Microwave, Oven, Refrigerator, Dryer, Washer, Gas Water Heater
  • Flooring: Hardwood Flrs Throughout
  • Interior Features: Family Room, Formal Dining Room, Pantry, Updated Kitchen

Measurements

  • Living Area: 3,962
  • Living Area Units: Square Feet

Rooms

  • Bathrooms Full: 4
  • Bathrooms Partial: 1
  • Bathrooms Total Integer: 5
  • Bedrooms Total: 5
  • Rooms Total: 12

Other

Location

  • Subdivision Name: WEST SIDE ALAMO

Parking

Parking

  • Covered Spaces: 4
  • Garage Spaces: 4
  • Parking Features: Attached, Garage Door Opener

Utilities

Equipment

  • Cooling: Central Air
  • Electric: Photovoltaics Seller Owned
  • Heating: Zoned
  • Has Heating: Yes
  • Laundry Features: Dryer, Laundry Room, Washer
  • Sewer: Public Sewer
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 5 bedrooms and 5 bathrooms in this single-family home at 321 Castle Crest Rd.

Does this single-family home have parking?

Yes, there are 4 parking spaces available for 321 Castle Crest Rd.

How does 321 Castle Crest Rd compare to other single-family homes in Westside?

This single-family home is listed 36% below the average price for single-family homes in Westside and has been on the market for 51 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 3,962 sqft.

321 Castle Crest Rd is a 5-bedroom, 5-bath single-family home for sale in Alamo CA 94507. Available on Prevu for 17 days at $2,798,000. This home features 3,962 square feet of living space, located in Westside. The median listing price for single-family homes in this area is $3,199,000. The home offers private outdoor space, dishwasher, air conditioning, parking, swimming pool, and washer/dryer. Browse more single-family home listings in Contra Costa County.

Based on information from bridgeMLS 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 Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.