137 Oak Knoll Avenue is a 2,965 sq ft home that blends old-world Mediterranean charm with a sophisticated modern aesthetic to create a timeless classic. This unique 4 bedroom, 3.5 bath home features vintage oak floors, beamed ceilings, and curved archways throughout. The family room has a black marble fireplace and dark olive walls, while the heart of the home is the new kitchen with a massive 10ft island, custom cabinetry, and La Cornue and Gaggenau appliances. The dining room leads to terraced brick herringbone and bluestone patios with an outdoor fireplace and fountains. The living room is adorned with a wood-burning fireplace and an enormous steel and glass arched window. The primary suite features abundant natural light, a fireplace, and a spa-like en-suite bathroom with separate vanities, soaking tub and walk-in closet. Updated and with a ~1,350 sq ft addition yet maintaining its 1928 charm, the home is functionally brand new, including new HVAC, A/C, electrical, plumbing, roof, windows, 2-car garage, sewer lateral and more. Downstairs is a laundry room, a mudroom off of the 2-car garage, and a flexible J-ADU with a separate entrance. Nestled into the flats where San Anselmo meets Fairfax, it's in the Ross Valley SD and is a stone's throw to local amenities and nightlife.