Yes, but as I said before (perhaps too obliquely) just make sure that the location of the new fence is entirely on your Lot and not on Common Property, and make sure that you receive the written consent of the Owners Corporation (O/C). Whilst the current O/C may be blasé about the whole matter, what happens when there’s a new Committee that has a different view and/or if you want to sell at some future time and a Strata Search raises issues with the fence that put-off a prospective purchaser?
Unlikely? Maybe, but it too easy to get it all nailed-down now in my opinion.