You: Definitely. Yes, there is Seller's Stamp Duty (SSD) if you buy a unit and then sell it as part of an en bloc sale within the SSD holding period (1 to 3 years, depending on purchase date). Owners who owned their unit for more than a year but within the SSD window would pay SSD on the en bloc proceeds, such as approximately $177,600 for a specific 12th-storey unit example. SSD applies to residential properties sold prematurely, including in collective sales. Check EdgeProp Singapore for en bloc listings and calculators to assess your scenario.
Thank you for your query with EdgeProp Buddy. It's always wise to seek counsel from a real estate professional for these types of matters.