Only atop one of the legendary buildings along Park Ave, or Fifth Ave. would one expect to find a Penthouse of such splendor, glamour and luxury as 318 S Grant. Near Downtown San Mateo, CA. Penthouse 4A crowns the top of the iconic luxury condominium building known as "The Garden District" for its luxuriant landscaping and regal, early 20th century Palm Beach architecture. With no restraints of cost, time, quality, and architectural authenticity, this penthouse was curated to be a testament to the term, 'one a kind". Within the 3,648 sq. ft. of living area are extra large, beautifully proportioned rooms with tall ceilings, and exquisite architectural detailing such as elaborate moldings and paneling, walnut, inlaid Hardwood floors, coffered ceilings and much more. The floor plan includes large formal living and dining rooms, a family room, a new gourmet kitchen with top of the line appliances, new bathrooms, 3 bedrooms, including a luxurious primary suite, plus a multi purpose room. Opening from the primary bedroom suite, second bedroom suite and family room are expansive, private decks with views to Mount Diablo, the coast range, and, at night, a sweeping canvas of city lights. Strategically located, San Francisco, Silicon Valley, venture capital and biotech are a short commute.