I have several sectional title properties.
If you buy sectional title buy into a small block, eg < 9 units.
More than that, and it generally means issues.
Sectional title is pretty maintenance free if you pick a 1940's era block, especially one without an elevator. Levies are higher than maintenance would be, but its fairly easy to rent them out and not do much maintenance other than the odd bit of painting every few years internally. I've been replacing 60 year old geysers in some of mine, and doing up the bathrooms to more modern chinese standards*.
*I used to live overseas in Shanghai, so brought back a lot of stuff I can use for renovation from China. Tons of good quality stuff there, although we only see the cheap crap this side mostly.
I turned this:
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Into this last year:
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Total cost was < 30k, although I had to pay for a structural engineers report, which was annoying as hell.
Ask to see the body corporate reports for the last few years, and if there were any special levies, or they have any special levies planned. A well run body corporate will have these ready. A badly run one won't..
Also check to see if the body corporate members are complete cnuts, some are. You can generally tell if you talk to them, and get a feel of how they'll be. I have at least one block where they're rather cnuty about certain things (fictional rules that weren't in the rulebook registered with the deeds office), and tried to do some things which were illegal, and I had to throw my lawyers at them.