Established bee hives can be safely removed- rescued and relocated from inside trees, and depending on the tree location/age/height there are usually a number of options available to you.
Bee Rescue regularly works with Councils (Melbourne, Nillumbik, Darebin etc), Schools, Parks Victoria, real estate agents, landscape gardeners and arborists to safely remove and rehouse established bee hives from small bushes to very substantial trees. See pictures below.
For feedback from successful past bee removals, see google maps bee rescue. See pics from around 100 more pics over the last few years of safe bee rescue/removal on www.facebook.com/BeeRescueMelbourne