Completion year of Bishan Street 12.

Bishan Street 12 is a mature HDB area, and the blocks there were generally completed in the mid to late 1980s.

For example:
- Block 111 Bishan Street 12 – completed in 1986
- Block 115 Bishan Street 12 – completed in 1986
- Block 117 Bishan Street 12 – completed in 1987
- Block 101 Bishan Street 12 – completed in 1987
- Block 130 Bishan Street 12 – completed in 1986
- Block 141 Bishan Street 12 – completed in 1988

If you tell me the specific block number along Bishan Street 12, I can give you the exact completion year for that block.