Low Visibility Cat mesh on Terrace.

I have recently bought 'Off the Plan'. Once completed my apartment will have a 20sqm front terrace (entry into the apartment is via this terrace).

The contract states that up to two pets are allowed. I have two cats.

My front terrace will be split level with a 3 step height difference between the two sections. I would like to partition off a section at the beginning of the stairs (approx 8sqm) and enclose it in low visibility cat mesh (https://www.catmax.com.au/clearnet-enclosures.php), in order to allow my cats some outdoor space, but so as not to allow them to bother neighbours or soil common areas (I already do this at my current home so my cats are used to this).

The plan is to have the entire terrace (cat section included), “designed” sympathetically, by a landscape design company so that the mesh is as unobtrusive as possible, with lots of planting etc to help disguise it.

I am in NSW and wonder how likely it will be that the Body Coporate will refuse this?

Also, as this is a new development & I would like to do this as soon as I move in, is it the developer I approach? Are they in essence the 'Body Corporate' until the owners move in & take over?