twosailram is likely on the money, the smoke alarm install is dictated by floor plate/construction issues. Before casting blame I’d be going back to look at the Fire Safety Reports generated during design/construction & annual fire safety checks of your strata scheme. Reports should be lodged with your council. Having spent some quality time with the boxes of documents concerning our scheme it can take some time to sift through to find what you’re looking for.
Not sure where you are but I’ve found the City of Sydney archives department super helpful with access requests. They email digitised documents otherwise are happy to book appointments for archive viewing in their reading room.