The CMP in Perth once did VBAC's but are no longer able to, They still like people to apply so they can build a case to get VBAC's done again. What you may be able to do it register with them for a hospital birth but still have all your care at home and labour at home in the pool. Occasionally babies in this situation are "accidentally" born at home
The other option for home birth would be Independant midwife. Teh advantage of the CMP is its free. The disadvantage is there are a lot of restrictions but the prenatal and post natal care is fabulous and all in your own home. I am sure you would have a better chance at getting your VBAC with them than through hospital care.
Not sure which part of Perth you are in, If you're in Freo PM me and I'll let you know who to talk to from CMP
Good luck