Raising Queenslander which is already built under

Has anyone raised a Queenslander that was previously built in? Current head height is too low and needs to be raised 0.5m. Can this be done and not demolish all walls?

have a look at https://forum.homeone.com.au/viewtopic.php?t=475

Unfortunately we have already built in under the house - with walls for new laundry,sliding doors for rumpus, study, etc. At the time we couldn't afford to raise the house - big mistake, false economy. [probably have to start from scratch, that is demolish all downstairs, raise the house and start again. Would like to hear from anyone that has had to do that.

I can't see how it would be possible to lift a house without demolishing the ceiling and most if not all of the walls. When our house was lifted they ran a few big beams underneath the full length o the house, and then lifted those with hydraulic jacks. Your existing ceiling and walls are going to get in the way.

The other problem you might run into is approvals. The inspector will want to inspect the footings before the slab goes in, and the frames before the cladding goes on, which would be a bit hard in your case. Is your existing work approved? I suspect not, if there is insufficient height.

Starting again is probably going to be cheaper than trying to work around what you have.