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    Contra Costa County, CA Duplexes for Sale

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    Duplex With Two Indoor Laundry Rooms
    Updated: Aug 1
    Duplex With Two Indoor Laundry Rooms

    709 W 8Th St, Antioch, CA 94509

    $590,000
    1,952 sqft 0.11 AC lot
    1,952‑square‑foot duplex on a 0.1148‑acre lot
    Two units, each with an indoor laundry room
    Upstairs unit updates include flooring, counters, cabinets, and appliances
    Large, open kitchens in both units
    Off‑street and on‑street parking
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    This listing looks promising.

    Here's a quick look at some key insights for

    709 W 8Th St, Antioch, CA 94509

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    • Est. Cap Rate

      5.7%
      NOI ÷ price

    • Est. NOI

      $33K
      Annual

    • Price @ 7% Cap

      $477K
      Suggested

    • Property Type

      Duplex
      Built 1950
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    Updated Duplex with Detached Unit
    Updated: Aug 5
    Updated Duplex with Detached Unit

    2024 Thompson Ln, El Sobrante, CA 94803

    $999,000
    2,892 sqft 0.31 AC lot
    2,892‑square‑foot duplex on a 0.31‑acre lot
    Main residence includes 4 bedrooms and 3.5 baths
    Detached rear home has 2 bedrooms, 1 bath, kitchen, living room, and laundry room
    Separate driveway, entrance, water meter, and PG&E meter serve the rear unit
    U‑shaped driveway, new concrete work, patio, fencing, and maintenance shed
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    Two-Story Duplex with Private Yards
    Two-Story Duplex with Private Yards

    Oak Grove Rd 1950 & 1952, Walnut Creek, CA 94598

    $1,523,000
    2,758 sqft 0.22 AC lot

    Two residences offer near-single-family layouts, attached garages, separate PG&E meters, and one vacant unit.

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    Duplex With Attached Garage
    Duplex With Attached Garage

    2048-2050 Donald Dr, Moraga, CA 94556

    $1,350,000
    1,620 sqft

    Two-unit residential property with fenced exterior space, private parking, and in-unit laundry equipment.

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    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    Duplex With Attached ADU
    Duplex With Attached ADU

    3692 Sundale, Lafayette, CA 94549

    $1,595,000
    3,282 sqft 0.23 AC lot

    Main residence and accessory apartment support flexible rental, household, or home-office arrangements.

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    Renovated Two-Residence Duplex
    Renovated Two-Residence Duplex

    1009 - 1011 Froyd Rd, Concord, CA 94521

    $1,399,000
    3,384 sqft 0.65 AC lot

    Separate homes feature upgraded interiors, private outdoor areas, and dedicated garage space.

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    Two-Unit Duplex Property
    Two-Unit Duplex Property

    29 Solano Ave, Bay Point, CA 94565

    $888,000
    2,754 sqft 0.16 AC lot

    Separate residences offer flexible occupancy with fenced grounds, garage and RV parking, public utilities, and central air.

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    Remodeled Duplex with ADU Plans
    Remodeled Duplex with ADU Plans

    1377 Monterey St, Richmond, CA 94804

    $798,800
    1,241 sqft

    Two renovated residences include separate utilities, detached garage access, and permit-ready plans for a detached ADU.

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    Duplex with Vacant Unit
    Duplex with Vacant Unit

    3008 Center Avenue, Richmond, CA 94804

    $589,000
    1,614 sqft 0.12 AC lot

    One unit is vacant and move-in ready in this duplex with off-street parking and wall furnace heat.

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    Historic Duplex
    Historic Duplex

    213 Nicholl Ave, Richmond, CA 94801

    $799,000
    1,836 sqft 0.06 AC lot

    Both residences are occupied, with public water and sewer serving the property.

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    Two-Unit Duplex
    Two-Unit Duplex

    141145 Eddy Street, Richmond, CA 94801

    $745,000
    2,238 sqft

    Income-producing duplex with distinct two-bedroom and one-bedroom residences near freeway access.

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    Updated Duplex with Private Yards
    Updated Duplex with Private Yards

    1003-1011 Lassen St, Richmond, CA 94805

    $750,000
    1,332 sqft 0.11 AC lot

    Two separate units provide private entrances, garages, laundry areas, and fenced outdoor space.

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    Renovated Two-Unit Duplex
    Renovated Two-Unit Duplex

    423 Silver Ave, Richmond, CA 94805

    $690,000
    1,974 sqft 0.17 AC lot

    Updated duplex with matching three-bedroom layouts, full appliance packages, owned solar, and public utilities.

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    Two-Unit Duplex with Detached Garage
    Two-Unit Duplex with Detached Garage

    1507 Oscar St, Richmond, CA 94804

    $649,000
    1,220 sqft

    Each residence has a private front porch, while the property includes outdoor space with fruit trees.

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    Duplex with Detached Second Unit
    Duplex with Detached Second Unit

    2024 Thompson Ln, El Sobrante, CA 94803

    $999,000

    The property includes a main residence and a detached unit with separate access.

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    Two-Story Duplex with Private Backyards
    Two-Story Duplex with Private Backyards

    1950 Oak Grove Rd 1950 & 1952, Walnut Creek, CA 94598

    $1,575,000

    Matching residences feature attached garages, fireplaces, open kitchens, and separate outdoor areas.

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    Renovated Duplex with Gated Parking
    Renovated Duplex with Gated Parking

    628 21st Street, Richmond, CA 94801

    $739,000

    Fully leased duplex with two renovated units and secured on-site parking for residents.

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    Remodeled Duplex with Private Yards
    Remodeled Duplex with Private Yards

    35 E 16Th St, Antioch, CA 94509

    $495,000

    Two residential units offer separate outdoor areas, updated systems, and covered plus driveway parking.

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    Corner Duplex with Private Yards
    Corner Duplex with Private Yards

    495 Key Boulevard, Richmond, CA 94804

    $794,900
    1,764 sqft

    Two separate units with private yards, new wood fencing, separate meters, and a converted studio garage for additional income.

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    Garden-Centered Duplex
    Garden-Centered Duplex

    5705 Panama Ave, Richmond, CA 94804

    $849,000

    Two separate residences share landscaped outdoor areas, garage and storage space, and convenient access to regional transportation.

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    Two-Unit Multifamily Apartment
    Two-Unit Multifamily Apartment

    555 Grove Ave, Richmond, CA 94801

    Contact for pricing

    Two-unit multifamily apartment building offered for sale at 555 Grove Ave in Richmond.

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    Multi-Family Apartment Building For Sale
    Multi-Family Apartment Building For Sale

    551 Grove Ave, Richmond, CA 94801

    Contact for pricing

    Two-unit multi-family apartment building available for purchase.

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    Newly Built Duplex Residence
    Newly Built Duplex Residence

    3225 Clayton Rd, Concord, CA 94519

    Contact for pricing

    Newly constructed duplex with modern open layout, updated finishes, and a private rear patio.

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    Based on your search, we've compiled Potential Opportunities for your consideration. Besides 23 Active Listings in Contra Costa County, CA

    Contra Costa County, CA Duplexes Market Trends and Statistics

    Explore 23 duplexes for sale in Contra Costa County, CA, showcased through 23 active listings on our real estate platform. These investment opportunities span a total of 31,861 square feet of properties for sale, with an estimated market value of $18,816,700.

    Sale prices for duplexes in Contra Costa County, CA start at $495,000, averaging $940,835, and reaching up to $1,595,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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    Featured Contra Costa County Real Estate Agencies

    Realmo connects you with licensed Contra Costa County CRE brokers providing property specifications, local market pricing, and commercial transaction underwriting support.

    Security Pacific Real Estate
    3223 Blume Drive Richmond, CA 94806
    Phone: 15106628502
    www.spre.com
    Keller Williams Realty Danville
    760 Camino Ramon, Suite 200 Danville, CA 94526
    Phone: 19258558333
    www.kwdanville.com
    Village Associates Real Estate
    93 Moraga Way, Suite # 103 Orinda, CA 94563
    Phone: 19252540505
    www.villageassociates.com

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