Please provide rental transactions for unit mix.

To obtain specific rental transactions for a particular unit, such as unit #xx-xx at Bishan Street 12, you would typically need to access detailed transaction data. However, the provided sources do not specify rental transactions for individual unit numbers.

For general rental transactions at Bishan Street 12, here are some recent rentals:

- At 101 Bishan Street 12, rents range from $3,500 to $3,900 per square foot, but specific unit numbers are not provided.
- For other blocks in Bishan Street 12, rental transactions are listed but do not include specific unit numbers. For example, recent rentals in the area include $4,900 for a 5-room flat and $5,000 for an executive flat, but these are not tied to specific unit numbers.

To get the exact rental transactions for unit #xx-xx, you would need to check the detailed transaction records, which may require a Pro User subscription on EdgeProp Singapore or direct access to the URA or HDB databases.