Welcome to 23 First Ave, a charming and spacious duplex in the heart of Toronto! This beautifully maintained two self contained units home, built in 1900 and substantially renovated in 1984, offers 2,144 square feet of above-grade living space and an 843 square foot basement (totalling 2987 square feet) with 5 bedrooms, many bathrooms, and a finished lower level. Enjoy the character of a classic semi-detached duplex with modern updates, featuring forced air heating, generous room sizes, and a versatile layout across three levels. The property sits on a deep 18 x 133 ft lot with year-round road access, nestled in a vibrant residential neighbourhood close to major transit, parks, and amenities. With a recent July 31 2025 Automated Valuation of $1,625,000 by the Municipal Property Assessment Corporation and surrounded by comparable sales, this is a rare opportunity to own a piece of Toronto's history in a sought-after location perfect for families or investors seeking space, convenience, and prime real estate! ***Parking at rear***All photos digitally decluttered***