At the 2021 Census, 27.2% of Mudjimba's occupied private dwellings were semi-detached, row or terrace houses or townhouses, roughly 2.3 times Queensland's 11.7%, while flats and apartments were 10.0%, below Queensland's 12.5%, and separate houses were 59.6%. A further 3.6% were classified 'other dwellings', against 0.7% across Queensland. Read together, that is attached housing at more than double the state rate without the apartment stock that usually comes with it.
That combination is what makes the title question live here. The ABS category is defined by dwellings that share at least one structural wall with a separately titled neighbour, so where such a dwelling is a duplex, the roof over it is typically one continuous surface across two separately owned lots. Whether it is true of your own dwelling is not something a quote can assume on your behalf. It has to be established before a quoted scope, an access arrangement or a start date can mean anything, and it has to be established with the owner of the lot next door, whose name will not appear on your quote.
So ask whoever quotes to show you where they say the surface stops, and to write that boundary into the scope rather than leave it to be found on the day. Ask which parts of the work need to stand on, over or against the adjoining lot, and get that in writing too. Then take those three items, scope and access and timing, to the other owner before you sign anything, because all three reach their property as well as yours.
Two published things are useful at that point. The business publishes on its own site that its quote is written and emailed, with an itemised price and a transparent breakdown of costs, obligation-free, and fixed for the agreed scope. An itemised scope is a document two owners can read line by line and divide between them; a single figure at the bottom of a page is not. The business also publishes its own process as inspect, repair, clean, coat or seal, then a final check, which gives an access-and-timing conversation named stages to hang on rather than a vague fortnight.
Timing is the honest gap. No start date and no job duration are published anywhere. One customer described a date being booked and the work running over two days, which is one job and not a schedule anyone else can rely on. If a date has to suit a second household as well as yours, ask any contractor to put the start date and the expected duration in writing.