What is the acceptable minimum size for 3-bedroom dual key layouts?

For HDB upgraders looking at 3-bedroom dual key units, the acceptable minimum size can vary, but generally, they tend to look for units that are at least around 1,000 to 1,200 square feet. This size range allows for a comfortable living space, a self-contained studio or additional bedroom, and adequate storage, making it practical for both multigenerational living and potential rental income.

Units as small as 1,030 square feet or as large as 1,280 square feet can be considered, depending on the specific needs and preferences of the buyers. However, the key factor is the functional use of space and the overall layout rather than just the raw square footage.