Situated on an oversized 66' x 88.5' double lot in the heart of Vanier, this rare purpose-built side-by-side duplex offers a unique combination of existing rental income and exceptional future development potential. Zoned R4UA, the property is uniquely configured with the entire duplex situated on one half of the lot, leaving the other half as largely vacant land - an increasingly rare opportunity in Ottawa's urban core. This highly flexible layout creates exciting possibilities for future intensification, redevelopment, expansion, or potential severance opportunities (buyer to verify with the City of Ottawa).The duplex consists of two 2-bedroom, 1-bathroom units, each with separate entrances and independently metered electrical service, separate hot water tanks, and separate washers and dryers. Current rents are well below market value, offering attractive future income upside, while the month-to-month tenancy structure provides flexibility. Whether you are seeking a strategic land holding opportunity, an income-producing property with substantial redevelopment possibilities, or a prime urban infill site with holding income already in place, 228 Carillon Street offers a rare range of options in one of Ottawa's rapidly evolving neighbourhoods. Ideally located close to downtown Ottawa, Beechwood Village, transit, parks, schools, shopping, and everyday amenities, this is a compelling opportunity for buyers looking to capitalize on the continued growth and intensification of the area.