Dual critical condominiums across Singapore are marketed for versatile dwelling and rental revenue, that includes paired layouts like two+studio, three+studio, or four+studio with a shared foyer but separate entrances and pantries; meta descriptions highlight investor charm, multi-generational residing, and cost efficiency by paying out just one set of purchaser stamp duty for properly two rentable spaces; snippets frequently list device measurements from about 700 to one,300+ sqft, OCR psf bands about S£1,7xx–S£2,2xx, and gross rent stacking where the studio and main device can obtain larger mixed generate, with rentals for studios close to S£2,200–S£3,800 and the principle 2- or 3-mattress device all around S£3,800–S$7,500 based on locale; relevant search phrases reference “twin key format,” “expense condo,” and “multi-gen,” when notes include strata regulations, air-con ledge positions, privateness, shared meters, and handling independent tenancies; prevalent spots include city fringe click here and suburban nodes close to MRTs and malls, with prospective buyers assessing servicing costs, audio insulation, and orientation to maximize rentability and luxury.