I've forgotten how much admin this entire process can be. It feels like I am glued to my phone and probably will be for the next few weeks.
We have builders coming in to fix the fukkup in the one room where they built a single brick wall as a load-bearing wall instead of a double brick wall as was shown on the plans. I spoke to an attorney and he reckons that going after the seller who sold us this (current) place is not worth the time or money, and he said rather to just fork out the R40k to get it fixed (Surveyor fees, building costs, attorney fees to get the change registered with the deeds office) and call it school fees.
And yet, my OTP was subject to receiving approved municipal plans...somewhere someone was very crooked and got away with this, but such is life. My suspicion is that the previous owner had permission to build the extra room, and then his builder cut corners and never built the two exterior walls as double brick walls because they probably thought having an IBR sheeting roof is light enough for a thinner wall. Fukk what the approved plans say, right?