241 Summit Avenue, Mill Valley, CA 94941
241 Summit Avenue
Price Upon Request

Perched on the spine of lower Summit Avenue and framed by spectacular views of the mountains and bay, this coveted Middle Ridge legacy property offers a half-acre double lot with limitless potential to live in, as is, or create your dream compound. A secluded sanctuary with stunning southern exposure, this mostly level land offers multiple configurations and supplemental income potential. Dotted in old growth oak, this idyllic family compound spans a roughly 19,000-square foot lot (241 Summit) with a three-bedroom, two-bath main house and two detached cottages, plus an independent, approximately 5,400-square foot lot (237 Summit) with a two-bedroom cottage, for a total of four, separately metered dwellings with multiple decks, patios, and outdoor spaces.

Included with this offering are fully entitled and approved plans by renowned architect Ken Linstead. This breathtaking residence plus ADU with room for a swimming pool are like nothing else and have the potential to be reimagined as of the finest properties in Marin County. Located in the coveted Mill Valley School District, 241 Summit is just minutes from vibrant downtown Mill Valley and some of the best hiking and biking trails in Marin County via the city’s abundant steps, lanes and paths.

Delivered with approved plans by renowned architect Ken Linsteadt, for a primary residence plus ADU and pool. All measurements and dimensions sourced from proposed architectural plans and 2017 sales disclosures and are not verified by agents. Buyer to investigate and verify accuracy of all information and square footage of the property.

Approximate square footage measurements for proposed project:

Main house and 2nd ADU measurements per Ken Linstead proposed floor plans:

Main House: 3,502 sq. ft.

1st Floor - 2,371 sq. ft.
2nd Floor - 1,131 sq. ft.

2nd Unit ADU - 654 sq. ft.

Main house and 2nd unit ADU total = 4,156 sq ft.

Approximate square footage measurements for the existing structures per floor plans drafted in 2017 by Floor Plan Visuals:

237-A: 770 sq. ft.

241-A: 1,405 sq. ft.

241-B:  775 sq. ft.

241-C: 775 sq. ft.




4,156 Sq.Ft. LIVING AREA

24,632 Sq.Ft. lot

Features and Amenities


  • total bedrooms3
  • Total bathrooms2
  • full bathrooms2

Area & Lot

  • Status Sold Off-market
  • Living Area4,156 Sq.Ft.
  • Lot Area24,632 Sq.Ft.
  • TypeResidential
Eric Altree

Eric Altree

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Eric Altree is a recognized leader in residential real estate brokerage in San Francisco and Marin County. He consistently exceeds his clients’ expectations and delivers exceptional results for them.

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