Our council requires a landscaping plan to be submitted with our development application so this was one of the first things we tackled after signing our contract.
I got the name of a landscaping design company that has completed quite a few designs in our estate and contacted them. They were both friendly and professional so we decided to go with them. We had an initial telephone conversation with them to discuss what we were after and they had a draft plan to us within a couple of days! The draft was actually pretty good, we only had to make a few amendments (change placement of a few things) and we had our final plans within the week.
Here is a copy of the plan: