The Building Services Tender Price Index is calculated in a manner similar to the Tender Price Index for new building works undertaken by Architectural Services Department, and is produced quarterly. The BSTPI reflects the level of tender prices for building services installations in new building works undertaken by the Architectural Services Department, and is therefore a complementary index to the TPI which excludes mechanical and electrical contracts. The value for the 4th quarter of 1989 when the index was introduced is taken to be the base index of 100, and subsequent values are expressed in index form based on the 4th quarter 1989 value.
| YEAR | QUARTER | BSTPI |
|---|---|---|
| 1993 | 4 | 109 |
| 1994 | 1 | 112 |
| 2 | 109 | |
| 3 | 108 | |
| 4 | 120 | |
| 1995 | 1 | 125 |
| 2 | 128 | |
| 3 | 123 | |
| 4 | 128 | |
| 1996 | 1 | 127 |
| 2 | 139 | |
| 3 | 129 | |
| 4 | 136 | |
| 1997 | 1 | 137 |
| 2 | 142 | |
| 3 | 141 | |
| 4 | 145 | |
| 1998 | 1 | 144 |
| 2 | 143 | |
| 3 | 146 | |
| 4 | 139 | |
| 1999 | 1 | 117 |
| 2 | 120 | |
| 3 | 126 |