This grand dame home sits on the iconic Madison Avenue in the prime Annex. Circa 1905, 135 Madison Avenue is just under 4,000 square feet above grade and filled with original character including 4 fireplaces, original trim, wainscotting, crown moulding, and stained glass windows. The well proportioned house features 9.5' ceilings on the main floor, a large formal living room, dining room, an oversized kitchen with a butlers pantry, and a beautiful main floor family room that leads out to the lush garden. On the second floor you will find a generous primary bedroom with a sitting area, fireplace and a three piece ensuite. There are an additional 2 large bedrooms on the second floor as well as 2 full washrooms, a dedicated laundry room, and a large sunny deck. The third floor would make a fabulous primary suite and currently includes a large living room, kitchen, two additional bedrooms and a large deck with skyline and treetop views. The basement is partially finished with 7 foot ceilings and features a separate entrance. This home has been used as single family for many years but has potential for many layouts and possibilities including converting the property back into multiple units. Two car private drive parking and garden suite potential. The Annex speaks for its self with easy TTC, fabulous shops, restaurants, parks and schools. Floor plans attached to listing. Great opportunity for those looking for a co-ownership property!