18 months to go
Decide where you would like to live. A fact-finding visit is invaluable, or use the web or word of mouth.
Research house prices, salaries and cost of living in that area.
Discuss your plans with your family and make sure they are all on board; teenagers in particular can find a big move difficult to come to terms with.
Investigate employment and business opportunities for all family members.
Attend migration and overseas property shows and use expat networks and websites to gain insight.
Choose a migration agent carefully, to help with your planned relocation.
Check what kind of visa you will need and get your eligibility checked.
If you have any serious medical conditions, check that they are not going to hamper your plans.
Prepare your house for sale (or rental) - you may need to redecorate.