More homeowners at Horizon Towers are putting their units up for sale after the proposed $500 million en-bloc sale to a joint venture led by Hotel Properties Ltd fell through in April. The 99-year leasehold property near Orchard saw a total of eight transactions from June 1 to 26 versus only one deal in May. There were four units sold at an average of $848 psf, from June 19 to 26, according to caveats...