Castro Valley Homes with 2 Houses / 1 Lot Lot description

Welcome to Castro Valley, CA – a hidden gem nestled in the heart of Alameda County. This vibrant community is renowned for its picturesque landscapes, friendly neighborhoods, and a charming small-town feel, all while being just a stone's throw away from the bustling cities of Oakland and San Francisco. With its rolling hills, lush parks, and a variety of recreational activities, Castro Valley offers an ideal setting for families, professionals, and nature enthusiasts alike.

One of the most unique opportunities in this area is the availability of homes featuring two houses on a single lot. Imagine the possibilities! Whether you're looking for a multi-generational living arrangement, a rental investment, or a creative space for your hobbies, these properties provide the flexibility and space you need. Each house can serve as a private retreat, while still being just steps away from family or friends, making it perfect for shared living.

Castro Valley boasts excellent schools, beautiful parks, and a thriving local economy, making it an attractive place to call home. The community is well-connected, with easy access to major highways and public transportation, allowing for seamless commuting to the Bay Area's tech hubs.

Explore the charm of Castro Valley and discover the unique lifestyle that comes with owning a home with two houses on one lot. Embrace the opportunity to create lasting memories in this beautiful community, where comfort and convenience meet the beauty of California living. Your dream home awaits!

Newest Castro Valley Homes with 2 Houses / 1 Lot Lot description

$999,950

41141107 MLS

Charming, beautifully remodeled 3-bedroom, 1-bath home offering 1,035 square feet of comfortable living space, plus a detached 250-square-foot cottage (ADU) with laundry. The rental income from the cottage provides an excellent opportunity to offset your mortgage, making it easier to own more home in this desirable, quiet court location. Tasteful updates are found throughout the property. Gorgeous hardwood floors flow through most of the home, complemented by tile flooring in the kitchen, bathroom, and laundry room, with carpet in select areas. The updated kitchen features Corian countertops, attractive wood cabinetry, a 4-burner gas range, built-in microwave, and abundant cabinet space. A spacious laundry room offers even more storage with extensive built-in cabinetry. The inviting living room showcases a custom tray ceiling, elegant crown molding, and energy-efficient LED lighting, creating a warm and welcoming atmosphere. Step outside to a patio deck overlooking the private, fenced backyard with lush lawn—perfect for relaxing or entertaining. A matching storage shed provides additional space for tools, gardening equipment, or seasonal items. A standout feature of this property is the detached, updated studio ADU-cottage, offering exceptional flexibility and income potential. Currently rented for $1,750 per month plus utilities, the cottage is separately fenced for added privacy and is ideal as a rental, guest house, private home office, or space for extended family. Move-in ready and thoughtfully updated, this exceptional property combines comfort, style, and outstanding investment potential. Don't miss this rare opportunity!

4231 Somerset Ave, Castro Valley

Listing courtesy of Tim Fiebig from EXP Realty of California, Inc. 510-708-8700

$999,950

3 Beds ⋅ 1 Baths ⋅ 41139746 MLS

Charming, beautifully remodeled 3-bedroom, 1-bath home offering 1,035 square feet of comfortable living space, plus a detached 250-square-foot cottage (ADU). The rental income from the cottage provides an excellent opportunity to offset your mortgage, making it easier to own more home in this desirable, quiet court location. Tasteful updates are found throughout the property. Gorgeous hardwood floors flow through most of the home, complemented by tile flooring in the kitchen, bathroom, and laundry room, with carpet in select areas. The updated kitchen features Corian countertops, attractive wood cabinetry, a 4-burner gas range, built-in microwave, and abundant cabinet space. A spacious laundry room offers even more storage with extensive built-in cabinetry. The inviting living room showcases a custom tray ceiling, elegant crown molding, and energy-efficient LED lighting, creating a warm and welcoming atmosphere. Step outside to a patio deck overlooking the private, fenced backyard with lush lawn—perfect for relaxing or entertaining. A matching storage shed provides additional space for tools, gardening equipment, or seasonal items. A standout feature of this property is the detached, updated studio ADU, offering exceptional flexibility and income potential. Currently rented for $1,750 per month plus utilities, the cottage is separately fenced for added privacy and is ideal as a rental, guest house, private home office, or space for extended family. Move-in ready and thoughtfully updated, this exceptional property combines comfort, style, and outstanding investment potential. Don't miss this rare opportunity!

4231 Somerset Ave, Castro Valley

Listing courtesy of Tim Fiebig from EXP Realty of California, Inc. 510-708-8700

Start Your Search

Bay East © 2026. CCAR © 2026. BridgeMLS © 2026. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, or CCAR MLS, or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated on: