Various assumptions were made in order to recommend the original strategy. These would have included issues such as income level, gearing strategies, rental levels, taxation regulations, etc. These assumptions need to be reviewed and an assessment made about their current validity.

The assumptions can be split into internal and external factors.

Internal factors are changes that are under the control of the clients themselves and external factors are changes that are outside the clients’ control that affect their situation.

External factors would include changes to legislation, interest rate changes, and delays to the developer’s original plans.