18-20' from the house if you dont want root shingle damage in wind. Ultimately it will grow up over the house, sooner for a 1 story fo course, but I would separate it at least 30' from the trunk of another non dwarf palm. Its going to take a long time, not nearly as fast as Beccariophoenix alfredii which grew an extra 7-8 feet in height in the time I had it 7 years. Theyt start out real slow 2-3 leaves a year for me till the trunk establishes itself, then they are a 10 leaf a year palm after 5 years or so, like alfredii. ANother thought is Aethiopum is more a steppe or desert type palm, most easily drought tolerant of all my palms. They shoot a massive sinker root down and if you damage that root when taking it out of a pot, its a goner. It also means you want high drainage soil, not mucky wet soil. Borassus Flabellifer, a related palm is a jingle palm and is dark vs the pale green of flabellifer. Here is my BA and Borassus Aethiopum fighting for space.