$1,499,000

Reimagined for modern living with a 4 bedroom, 3 bath main home and 1 bedroom permitted ADU! 18977 Patton has been expanded on, and brought to its exceptional full potential over the last 7 years by the owner for the owner. You know what that means - thoughtfully designed curated… Read More finishes meant for the enjoyment of those whom have owned it, not just for resale. Inside, bright open living spaces connect easily to the outdoors, with a large living room that has french doors that open into the fenced in front play yard. A large dining room beyond that also opens up to the back yard, while the kitchen anchors the space and stands out with stainless steel appliances, a gas range with pot filler and custom hood, and a farmhouse-style stainless steel sink. Warm wood tones, modern fixtures, and playful tile choices give the home a polished but inviting feel. The first-floor primary suite has a boutique hotel-esque feel and features a walk-in closet with hidden stairs leading to a bonus lower-level flex space, plus a spa-inspired bath with concrete collective terrazzo tile, brass finishes, stand alone soaking tub, oversized glass shower, and dual vessel sinks. A second bedroom and full spa-like tranquil bath are also on the main level, along with a dedicated laundry room with washer/dryer hookups. Upstairs are two additional bedrooms with high ceilings, large closets and a third full shower over tub bathroom. Outside, contemporary modern siding siding, dark-framed windows and trim, a pavers courtyard, privacy fencing, mature trees, and decomposed granite create a clean, low-maintenance setting with multiple areas to relax or entertain. The detached 1-bedroom ADU includes its own full kitchen with stainless steel refrigerator, microwave, electric oven, and dishwasher, plus a full bath and in-unit washer/dryer, heat and AC, and separate PGE meter —ideal for extended family, guests, office use, rental opportunity, or flexible independent living. Dont miss the side yard with additional storage shed, a dog washing station and veggie beds! Castro Valley is known for its strong community feel, well-regarded schools, and easy access to outdoor recreation, Lake Chabot Regional Park, and nearby open space. Shops, restaurants, BART, and commuter routes are all within convenient reach, offering a great balance of neighborhood comfort and East Bay connectivity. Read Less

Courtesy of Annie Tegner, Compass 510-339-6460

Listing Snapshot

Days Online

Last Updated

Sep 11, 2026

Property Type

Single Family Residence

Beds

Full Baths

Square Ft.

2,687

Lot Size

0.12 Acres

Year Built

1948

MLS Number

41147951

30 Days Snapshot Of 94546

$1.00M

-16%

(avg) sold price

-30%

homes sold

+60%

(avg) days on market

Snapshot

Area Map

Additional Details

Appliances & Equipment

Appliances: Dishwasher, Gas Range, Free-Standing Range, Refrigerator, Tankless Water Heater

Building

Building Area Total: 2687, Construction Materials: Wood Siding, Living Area: 2687, Other Structures: Shed(s), Year Built: 1948, Level - Street: 2 Bedrooms, 2 Baths, Primary Bedrm Suite - 1, Laundry Facility, No Steps to Entry, Main Entry, Level - Upper: 2 Bedrooms, 1 Bath

Cooling

Cooling: None

Exterior Features

Exterior Features: Garden, Back Yard, Front Yard, Garden/Play, Side Yard, Landscape Back, Landscape Front, Low Maintenance

Fence

Fencing: Fenced

Floors

Flooring: Engineered Wood

Foundation

Foundation Details: Raised, Slab

Heating

Heating: Zoned, Heating Included

Interior Features

Interior Features: Dining Area, In-Law Floorplan, Storage, Unfinished Room, Utility Room, Updated Kitchen

Laundry

Features: 220 Volt Outlet, Gas Dryer Hookup, Laundry Room

Lot

Lot Features: Front Yard, Landscaped, Paved, Lot Size Acres: 0.12, Lot Size Area: 5227.2, Lot Size Square Feet: 5022, Parcel Number: 84D134147

Parking

Parking Features: None

Pool

Pool Features: None

Property

Property Condition: Existing, Property Sub Type: Single Family Residence

Roof

Roof: Composition Shingles

Sewer

Sewer: Public Sewer

Utilities

Electric: No Solar, Water Source: Public

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