Off market since Sep 2026

Off market since Sep 2026 Home

Listed Jul 15, 2026

$2,524,900

321 Castle Crest Road

  • 5

    Beds

  • 5

    Baths

  • 3,962

    Sq ft

The story

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.

Facts & features

Home type

Home

Year built

1991

Floors

2

Lot size

1 acres

Price per sq ft

$637

Parking

4-car garage

Included features

  • Cooling

    Central Air

  • Heating

    Zoned

  • Appliances

    Dryer, Dishwasher, Double Oven, Microwave, Oven, Refrigerator, Gas Range, Washer, Gas Water Heater

  • Flooring

    Hardwood

  • Roof

    Composition

  • Lot Information

    Cul-De-Sac, Sloped Down

  • Water Source

    Public

  • Sewer

    Public Sewer

  • View

    Mountain

Listing Broker

Compass

Broker Name

Compass

Agent

Carolyn Gwynn

Location

Danville CA 94526