definitely use a designer - they have a much better idea of what plants will work and why, which will save you a heap of money (I have replanted 8 times due to having a poor understanding of what to put where) and when it comes to draining, paving, irrigation etc they have experience of not only how, but which products will produce what results.... Plus a good designed area looks "done" (think display home gardens/features) however self-designed always look "bitza". If you don't have the money to do the entire plan that they design, ask them to break it into stages that you can execute/upgrade over time that still looks good in its most basic form.

It depends what kind it is. Some are considered pests, eg Cocos Palms http://www.gardenweb.com/discussions/2792792/palms-goodies-or-baddies

Pazz is 100% correct. The surveyor will also note where boundaries and fences are, services are located (Telstra pit, sewer lines, power poles, etc) as well as the topography (lines showing heights and levels on the site). There are numerous other little bits as well but these are the major items.

Thank you Julia! It’s one of my fav projects!!! 💚