Home improvement can take many forms depending on a number of factors, what you want to achieve and your budget, but if you have an older home, it will most likely involve a full or partial re-installation.
An experienced electrical contractor can explain to you what is involved and how much you would like to adjust to repairing your home. First of all, it's important to know that it's actually illegal to do DIY rewiring as it can be very dangerous, especially if you have metal wires. So, it is necessary to contact a professional emergency electrician in Surfers Paradise to manage the wiring issue.
Costs vary depending on the size of the house – i.e. how many fittings, sockets and fuse boxes need to be refitted and/or replaced, how many new points and connected fittings and devices need to be installed and whether you need to supply or not house with electricity , upgraded to a three-phase system (very likely).
You have to log the electrical check and get a quote. That alone can be quite the job, so it makes sense to reach out to a larger contractor or electrician who knows what he's doing from the start. It's also important to think of someone who knows what they might find, e.g. local contractor.
So, find a local electrician who has experience and knowledge of the technical aspects involved in redesigning an old Kew type house. The local contractors would charge less for logistics etc, but actually you might get some cost savings with a bigger contractor.