Castro Valley, CA Multifamily Homes & Duplexes for Sale

Discover a rare opportunity in a prime Castro Valley location! This well-maintained duplex sits on a massive lot, offering endless possibilities for expansion—build additional units, add ADUs, or create your dream outdoor retreat (buyer to verify with county). One unit is currently vacant and move-in ready, featuring fresh interior paint and brand-new carpet, ideal for an owner-occupant or to

Lily Do Compass

Two Homes On One Lot - One Move In Ready & One with Endless Potential! A rare and exceptional opportunity! This unique property offers two homes on a spacious 14,864 sq/ft lot, featuring a total of 8 bedrooms, 8 bathrooms and a total of 6,680 sq ft of living space! Ideal for multigenerational living, investment, or income potential! The main home, including 5 bedrooms and 4 bathrooms is in

Carl Medford Kw Advisors

Location, Location, Location! MOVE-IN READY! Potential for ADU Why rent when you can own and rent at the same time—let the second unit help pay your mortgage! This rare duplex feels like two separate single-family homes, making it perfect for owner-occupants or investors. Situated on approximately 1/4 acre at the end of a private flag lot, this large duplex features: Unit 1 (Owner's Unit): 3

Kanwal Gill Keller Williams Realty

Rare Dual-Unit Opportunity in Prime Castro Valley Location! Welcome to 19790–19792 Stanton Ave, a legally permitted single-family home with a detached ADU, each with separate water, gas, and electric meters. This versatile property is ideal for multi-generational living, rental income, or owner-occupancy with supplemental cash flow. The main home (19790) offers a spacious layout with modern

Ellis Fong Cornerstone Realty and Mortgage

Incredible investment opportunity to purchase a nicely updated fourplex at the end of a quiet cul-de-sac in Castro Valley. Each of the four units is laid out as a 2-bed, 1-bath rental. Unit 2547 to be delivered vacant. Stable income from the occupied units offers individual garage parking and a lush backyard. Each unit hosts its on electrical and gas meter and an onsite shared laundry. This

Chris VavRosky Golden Gate Sotheby's Int'l

Investors dream in the heart of San Leandro! This well-maintained triplex is a rare opportunity to own a cash-flowing property with upside potential. Featuring three updated units, two currently tenant-occupied and generating strong rental income, this property already offers a solid cap rate. One unit is vacant and move-in ready, providing flexibility for owner-occupancy or added rental income.

Michael Dhanuwidjaja eXp Realty of California Inc

Open House, Sat 7/19 and Sun 7/20 - 1:00 - 4:00 both days. A rare opportunity in the heart of Castro Valley! TWO like-new homes on one lot—ideal for multi-generational living or generating rental income. The main home features 5 spacious bedrooms, 3 full bathrooms, and an open layout perfect for families. The gorgeous kitchen boasts an extra-large island, high-end appliances, and is perfect for

Stacy Coppola

Panoramic views! Rare opportunity to own a spacious duplex offering flexibility, comfort, and income potential. Each unit features 3 bedrooms and 2 bathrooms, including a private ensuite in the primary bedroom. With 2,380 total sqft, both units have been updated with luxury vinyl flooring, fresh interior paint, new recessed lighting, stylish light fixtures, a new fence, and new outdoor carpet on

Revelina Um Kw Advisors East Bay