Connect

Find us on...

Dashboard

Login using...

Shawn Bengtson

Office Broker - DRE 01236964

  • Office 760-805-7199
Questions?

321 Castle Crest Rd, Alamo – $2,524,900

  • 5 Beds
  • 5 Baths
  • 3,962 Sqft
  • 1.17 Acres
  • 5 Beds
  • 5 Baths
  • 3,962 Sqft
  • 1.17 Acres

321 Castle Crest Rd

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.

Essential Information

  • MLS® #41141765
  • Price$2,524,900
  • Bedrooms5
  • Bathrooms5.00
  • Full Baths4
  • Half Baths1
  • Square Footage3,962
  • Acres1.17
  • Year Built1991
  • TypeResidential
  • Sub-TypeSingle Family Residence
  • StyleContemporary
  • StatusActive Under Contract

Community Information

  • Address321 Castle Crest Rd
  • SubdivisionWEST SIDE ALAMO
  • CityAlamo
  • CountyContra Costa
  • Zip Code94507

Amenities

  • Parking Spaces4
  • ParkingGarage
  • # of Garages4
  • GaragesGarage
  • ViewHills, Mountain(s), Panoramic
  • PoolNone

Interior

  • InteriorWood
  • Interior FeaturesEat-in Kitchen
  • HeatingForced Air
  • CoolingCentral Air
  • FireplacesNone
  • StoriesTwo

Appliances

Dryer, Washer, Gas Water Heater

Exterior

  • ExteriorWood Siding
  • RoofShingle
  • ConstructionWood Siding
  • FoundationRaised

Lot Description

Front Yard, Cul-De-Sac, Sloped Down

Additional Information

  • Date ListedJuly 15th, 2026
  • Days on Market71

Listing Details

  • AgentCarolyn Gwynn
  • OfficeCompass
Please provide a valid email address.

Price Change History for 321 Castle Crest Rd, Alamo, (MLS® #41141765)

Date Details Change
Status Changed from Active to Active Under Contract
Price Reduced from $2,688,000 to $2,524,900 $163,100 (6.07%)
Price Reduced from $2,798,000 to $2,688,000 $110,000 (3.93%)

Carolyn Gwynn, Compass.

Based on information from California Regional Multiple Listing Service, Inc. as of September 24th, 2026 at 8:20am PDT. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.