Browse Forums Renovation + Home Improvement 1 Jul 15, 2024 12:27 pm I do have a 2 level house on the sloping down site. The subfloor under the send half of the house is a huge subfloor with 2.7~3m height. Just wondering if I can convert it to basement ? or Will council allow me to ? Any input ? Re: Is it possible to convert subfloor to basement for stora 3Jul 15, 2024 4:27 pm I think Council does not allow tri-level house. But not sure if it is ok with basement for storage in lower floor. Re: Is it possible to convert subfloor to basement for stora 5Jul 24, 2024 9:06 pm Just got response from council. Pouring concrete into subfloor does not require any building permit. You could be looking at anywhere between $400,000 to $800,000 depending on so many variables including: 1. Site conditions - what material is being excavated 2.… 1 22144 ![]() If you meant under existing waffle pod ground slab, then no unless the slab is designed to be suspended. 2 22220 1 9339 |