| · | responding closely to the stated brief |
| · | minimising the environmental impact of the work |
| · | maintaining a responsible approach to conservation |
| · | creating a safe environment for users and for future maintenance |
| · | incorporating inclusive access |
| · | researching causes before dealing with effects |
| · | taking advice from specialists where further expertise is needed |
| · | extending the life of the building by allowing it to evolve to meet changing needs |