133 Deer Park Avenue

Tucked behind private gates in the prestigious Dominican neighborhood, 133 Deer Park Ave is a masterfully custom-built estate that captures the effortless elegance of a Montecito retreat. This is one of those rare properties that manages to feel both grand and incredibly intimate, offering sweeping views of the San Francisco Bay and the iconic silhouette of Mt. Tamalpais. With over 7,700 square feet of thoughtfully designed living space, the home's Spanish tile flooring, Venetian plaster walls, and soaring ceilings create an atmosphere of timeless sophistication. The layout is a dream for multi-generational living or hosting guests in total comfort. The main residence features five spacious bedrooms, including a primary suite that serves as a true sanctuary. Occupying its own wing upstairs, the primary retreat boasts a cozy fireplace, dual walk-in closets, separate vanities, a steam room, a private gym area, and a sun-drenched office that opens onto a roof deck with stunning vistas. Three additional bedrooms on the main level are smartly designed with built-in desks and ample storage, ensuring everyone has their own dedicated space. Three full baths are smartly located nearby. For those who love to entertain, the flow between the formal living, dining, and lounge areas is seamless, with each room opening to its own private outdoor patio. The home also includes a temperature-controlled wine room and a secondary upstairs ensuite bedroom. Just steps from the main house, the separate Casita offers ultimate flexibility. Complete with a full kitchen, living area, bedroom, and balcony, it's perfect as a long-term guest residence or a high-end pool house. The grounds are nothing short of a private resort. Set on an expansive lot, the property features a sparkling pool and sun deck, a sports court, lush lawns, and manicured garden areas. Whether you're hosting a large-scale event or enjoying a quiet evening watching the sunset over the bay, the outdoor spaces provide a spectacular backdrop. Held by the same owner for over 40 years, this is a once-in-a-generation opportunity to own a legacy estate that perfectly blends Santa Barbara style with the very best of Marin living.

Days on Market

1 day

Current Status

Active

Original Price

$4,750,000

List Price

$4,750,000

On Market Date

Jun 16, 2026

Property Type

Single Family Residence

Area

San Rafael

Zip Code

94901

MLS ID

326052558

APN

015-231-19

Year Built

1988

Stories in Building

Unavailable

Possession

Close Of Escrow

Data Source

BAREIS

Origin MLS System

Bed

6

Bath

6

Parking

10

Attached, Interior Access

SQ FT

7,716

SQ FT Source

Assessor Agent-Fill

Lot SQ FT

42,253.0

Lot Acres

0.97 Acres

Pool Info

Built-In, Pool House

Kitchen

Breakfast Area, Pantry Closet

Cooling

Central

Dining Room

Formal Room

Exterior Details

Balcony

Family Room

Cathedral/Vaulted

Living Room

Cathedral/Vaulted, Deck Attached

Flooring

Tile, Wood

Fire Place

Family Room, Living Room, Primary Bedroom

Heating

Central

Laundry

Dryer Included, Ground Floor, Inside Area, Inside Room, Upper Floor, Washer Included

Upper Level

Bedroom(s), Full Bath(s), Primary Bedroom

Main Level

Bedroom(s), Dining Room, Family Room, Full Bath(s), Garage, Kitchen, Living Room, Retreat, Street Entrance

Views

Bay, City, Mountains, Mt Tamalpais

Possession

Close Of Escrow

Basement

None

Architectural Style

Mediterranean, Spanish

Fee

$0

MLS and other Information regarding properties for sale as shown in Theo have been obtained from various sources such as sellers, public records, agents and other third parties. This information may relate to the condition of the property, permitted or unpermitted uses, zoning, square footage, lot size/acreage or other matters affecting value or desirability. Unless otherwise indicated in writing, neither brokers, agents nor Theo have verified, or will verify, such information. If any such information is important to buyer in determining whether to buy, the price to pay or intended use of the property, buyer is urged to conduct their own investigation with qualified professionals, satisfy themselves with respect to that information, and to rely solely on the results of that investigation.

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