The Developers frequently refer to blocks by number.

For clarity, the following is a simple guide translating relating block number to the flats they contain

Block 1 - Flats 1 to 16 Block 2 - Flats 17 to 36 Block 3 - Flats 37 to 56 Block 4 - Flats 57 - 76

Block 5 - Flats 77 to 100 Block 6 - Flats 101 to 118 Block 7 - Flats 119 to 142 Block 8 - Flats 143 - 160

Block 9 - Flats 161 to 184 Block 10 - Flats 185 to 204 Block 11 - Flats 205 to 220 Block 12 - Flats 221 - 236

Block 13 - Flats 237 to 252 Block 14 - Flats 253 to 268 Block 15 - Flats 269 to 280