Rare 9,000+ sq.ft. lot! This unique 1924-built property offers unmatched versatility as a high-end revenue duplex or a conversion opportunity back to a massive single-family home. The ground floor boasts 9.5ft ceilings, original charm, and a large extension featuring a primary suite, with a walk-in closet. Includes a partially finished basement and single garage. Upper unit (#158) is a spacious 2-bedroom apartment with a private side entrance & sunroom. Huge east-facing yard with pergola. Steps from Lachine waterfront paths, and close to top schools (College Ste-Anne, Catherine-Soumillard). A true collection piece!