Construction
| 1987 | John Miller + Partners appointed to provide master plan for Millbank site | |
| 1992 | Donation from Sir Edwin and Lady Manton enables planning to commence on the north-west quadrant of Millbank as part of the first phase of the master plan | |
| 1993 | Design for the NWQ completed and planning permission granted | |
| 1994 | Advent of the National Lottery enables plans to become more ambitious, by increasing the scope of the project and adding the re-landscaping of the external areas and front gardens | |
| 1995 | Design for the Tate Britain Centenary Development is completed | |
| Jun 1996 | Lottery application submitted to Heritage Lottery Fund | |
| Nov 1996 | Planning permission received | |
| Feb 1997 | £18.75 million is awarded from the Heritage Lottery Fund | |
| May 1997 | Mace appointed as Construction Managers | |
| Oct 1997 | Galleries and office areas in the north-west quadrant are cleared | |
| Dec 1997 | Site handed to Mace | |
| Jan 1998 | Site preparations begin, hoardings etc are erected and the removal of marble begins, which takes until June | |
| Mar 1998 | Existing services isolated prior to strip out | |
| Jun 1998 | Excavation begins - excavation goes 7m below ground and 2m below the water table and occurs around and under spaces containing works of art and the public. Archaeological survey takes place | |
| Sep 1998 | Lord and Lady Sainsbury of Preston Candover donate money to enable the building of the Linbury Galleries | |
| Dec 1998 | Commencement of concreting to form basement | |
| Jan 1999 | The biggest concrete pour of 360m3 in one day | |
| Apr 1999 | Erection of steel frame to new galleries commences. 180 tonnes of steel are erected in the next two months. Existing gallery floors removed | |
| Jun 1999 | Cleaning of exterior stonework begins | |
| Jul 1999 | Erection of internal blockwork walls to new galleries start | |
| Oct 1999 | External landscaping commences | |
| Jan 2000 | External stone repairs and cleaning complete | |
| Feb 2000 | External ramp and staircase construction begins | |
| Apr 2000 | Flooding occurs within the basement plant room causing damage to installed plant and equipment leading to a delay in completion of the project | |
| Jul 2000 | Lawns laid | |
| Aug 2000 | Front landscape handed over | |
| Aug 2001 | Construction Project complete, site handed back to Tate for fitting out | |
| Sept 2001 | Art Installation begins | |
| 30 Oct 2001 | HRH The Prince of Wales officially opens the Tate Britain Centenary Development | |
| 1 Nov 2001 | The Centenary Development open to the public |