First time on the market! Expansive 20? wide, 4-story townhouse with a beautiful outdoor garden, on a tree-lined street off Third Avenue in the Treadwell Farms Historic District. Spanning approximately 4,283 square feet, the property is currently configured as two residential units, a lower duplex and an upper duplex. The entire house is centrally air conditioned. The ground floor of the lower duplex, which is built 20'x 70', has an eat-in kitchen, powder room, and a gracious formal dining room which leads to an exquisite sun-filled living room with double height ceilings, fireplaces and two skylights. Just past the living room is a beautifully maintained planted garden which floods the house with natural light. The parlor floor contains 2 bedrooms with en-suite baths. The north-facing bedroom has floor-to-ceiling windows, a marble fireplace, and a massive 7'x 14? walk-in closet. The second bedroom also has a fireplace with a den/office overlooking the living room and garden. The upper duplex has 3 bedrooms, 4.5 marble baths, two skylights, a modern kitchen with granite counters, a washer/dryer, and central air, 4 fireplaces. The sunny, south-facing living room has high ceilings, over-sized windows, a fireplace, and opens onto a lovely redwood terrace overlooking the garden. Additionally, there is a large planted roof deck. The finished basement features a den/office, kitchen, washer/dryer, utilities, and tons of storage.