Yes. Lot width and dwelling type do not change the requirement: residential footings and slabs are generally designed from a site classification under AS 2870, and certifiers expect a site-specific report before approving them. In Mango Hill, where close to three in ten dwellings at the 2021 Census were not separate houses, this comes up often. For a duplex or other attached design, tell us the layout when you book so we can confirm how to set out the investigation and place the boreholes near the proposed footings.

No. They share a history, because North Lakes was created from the northern section of Mango Hill in 2006, but Mango Hill is its own suburb today. Some planning arrangements that apply in North Lakes may not apply to your Mango Hill lot, so check your property's details with the City of Moreton Bay rather than relying on what a North Lakes neighbour was told. For the soil test itself, the classification is based only on the ground we test on your block.

The Mango Hill and Mango Hill East stations opened on 4 October 2016, and published census summaries suggest Mango Hill's population nearly doubled over the following five years, reaching 14,921 in 2021. Much of that growth has come as new homes, townhouses and duplexes, and close to three in ten local dwellings were something other than a separate house at the 2021 Census. The classification is the first document your engineer needs, so having it ready early keeps your job moving.

Not in principle. The stations opened on 4 October 2016 on the Redcliffe Peninsula line, and close to three in ten Mango Hill dwellings were something other than a separate house at the 2021 Census. The requirement stays the same, because footings and slabs are generally designed from an AS 2870 site classification. What changes is how we plan the visit. On an attached or compact site, we need to know where the footings will sit so the boreholes go there, and whether a rig can reach that spot. Send the site plan when you book and we will confirm access.

We do not quote a fixed timeframe here, because it depends on access, ground conditions and laboratory scheduling, so ask us when you book and we will give you a current answer. What we can explain is the sequence: fieldwork on your block near the proposed footings, then analysis of the samples in our own NATA-accredited laboratory at Wamuran. On a small lot, clear access to the footing area before we arrive is the easiest way to keep the visit simple.

Because the classification describes the ground under your footings, not the estate. The QBCC notes that most Queensland homes sit on reactive clays whose movement follows soil moisture, and that trees, poor drainage and leaking plumbing can push it beyond normal limits. Those conditions can differ from one lot to the next, even along a compact Mango Hill street, and the class letter your engineer designs from reflects the ground actually tested. A certifier will generally look for a report based on your own site. That is why we test your block near the proposed footing area rather than relying on a neighbour's result.

The more we know about the footprint, the better we can plan the visit. Please send the lot address, a site plan showing the proposed building outline, and any notes about access, such as gates, fences or structures close to the boundary. Our boreholes need to go near the proposed footing area, so the plan shows us where the engineer needs data and whether a rig can reach it. For attached housing, include the full layout so we can confirm how to set out the investigation. If the project needs more than a standard house classification, mention it and we can discuss our geotechnical drilling service.