Underpinning in Merewether
On the state's district layer, all five of our sample points in Merewether fall inside the NEWCASTLE Mine Subsidence District, the regulator's district where approval is needed to build or subdivide. The regulator calls its district maps a general overview and sends you to its Spatial Viewer for a property.
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Underpinning around Merewether
We asked the state's district layer and its soil-landscape map what they return at five points across Merewether. The district layer returned NEWCASTLE at every point. The soil map returned the Hamilton unit at two points and the Cedar Hill, Gateshead and Killingworth units at one each. The state's report for the Killingworth unit lists Mine Subsidence District among its landscape limitations and calls its foundation hazard generally low, with a localised moderate hazard where high shrink-swell subsoils occur. The report for the Hamilton unit calls foundation hazard generally low, but possibly moderate on clay fan deposits. We did not read the Cedar Hill or Gateshead reports.
Five points are not the suburb, and the regulator says its district maps give a general overview and that a property-specific result comes from its Spatial Viewer, where you enter the street address or the lot and plan number. That matters because the regulator also says every home is eligible for compensation for mine subsidence damage provided the correct development approvals were obtained. The next step is a check of your own lot.
Permits and City of Newcastle rules
City of Newcastle's development control plan 2023, section B3, says mine subsidence must be considered in the preliminary design of all development and that approval from Subsidence Advisory NSW is sought before a development application is lodged, with endorsed plans stamped by the regulator submitted with it. Its scope is a new building or structure, extension or structural alteration, or subdivision on land in a proclaimed district. The plan also says its provisions are not statutory requirements, and the council's exempt-development page says only that plans may need stamping. None of these pages says whether underpinning falls under section B3, so ask the regulator, the council or a certifier.
Source: City of Newcastle DCP 2023 section B3 and Part A (amendment history: B3 not amended since commencement on 1 March 2024); City of Newcastle exempt development page; Subsidence Advisory NSW, Mine Subsidence Districts and Development approval process; NSW soil landscape unit reports, Killingworth and Hamilton; read 25 September 2026. — confirm current requirements with City of Newcastle.
Our Merewether service area
An enquiry from Merewether is passed on to an independent provider, who gets in touch to look at the house.
See all Underpinning in Newcastle. We also work in Adamstown, New Lambton and Hamilton, among the other suburbs we list.
Call (02) 9072 0403Last reviewed · Updated · First published