Welcome to The Hartz Estate, a truly one-of-a-kind residence steeped in Danville’s early history. Once home to John Hartz, one of the town’s pioneering founders, this stately Colonial-style home is a rare blend of heritage, elegance and potential—set on an ultra-private, flat 1.58-acre lot just minutes from downtown Danville. Framed by a gated circular driveway and lush landscaping, the estate exudes timeless character. Inside, the main residence offers formal living, dining, and family rooms showcasing exquisite millwork and traditional craftsmanship. The spacious kitchen at the rear of the home offers serene views of the tranquil grounds and incredible expansion potential for a luxury kitchen remodel or great room concept. Upstairs, two different staircases lead to five bedrooms, including a versatile room currently used as a home office. Beyond the main home, the estate features an impressive suite of auxiliary structures: a one-bedroom ADU above the garage, a large pool house with a second kitchen, ideal for entertaining, and a 5,000+ bottle wine cellar. The large, flat lot presents a rare opportunity for subdivision or a complete reimagination into a contemporary family compound.
MLS #
CC41098122
MLS Source
Contra Costa Association of Realtors
Kitchen
Breakfast Nook, Countertop - Tile, Eat In Kitchen
Appliances
Oven Range - Built-In, Dryer, Washer
Dining Room
Formal Dining Room
Family Room
Separate Family Room
Fireplace
Family Room, Living Room, Primary Bedroom
Flooring
Carpet - Wall to Wall, Hardwood
Laundry
In Laundry Room
Cooling
Central -1 Zone
Heating
Heating - 2+ Zones
Roof
Composition
Pool
In Ground
Style
Colonial
Garage/Parking
Detached, Enclosed, Garage, Garage: 5 Car(s)
Sewer
Public Sewer
Water
Public
333 Quinterra Ln is a Single Family Residence in Danville, CA 94526. This 5,593 square foot property sits on a 1.58 Acres Lot and features 7 bedrooms & 5 full and 2 partial bathrooms. It is currently priced at $7,175,000 and was built in 1959.
This address can also be written as 333 Quinterra Ln, Danville, CA 94526.©2025 Contra Costa Association of Realtors. All rights reserved. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Information provided is for personal, non-commercial use by the viewer and may not be redistributed without explicit authorization from Contra Costa Association of Realtors.
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This listing information is up-to-date as of June 23, 2025. For the most current information, please contact Taso Tsakos, (925) 785-5419