Whenever undertaking a big project it is important to have a good idea of budget. However what it costs depends on how much of a change you want to make.
While that is absolutely true, it isn't very helpful. As a rough guide, a simple planting scheme in a small garden can be less than £100, planning a large garden with a lot of features can cost upwards of around £500. The total cost of a project including planning, designing and planting out a small garden or a relatively small area of a large garden costs upwards of £1000, with £5,000 being a typical figure for a big change in a medium sized garden. Compared to the cost of a kitchen and the scale of work being undertaken this represents huge value for money.