House Underpinning Sydney
Call (02) 9072 0403

Servicing Sydney, NSW.

Call (02) 9072 0403

Underpinning across Sydney

Enquiries come from across the councils of Greater Sydney. Five suburbs have a page because a council's own controls or the state's mapping give each something specific, and different, to say about digging beside a footing there.

Call (02) 9072 0403

Where we work

For each suburb we queried the state's soil-landscape mapping at five points: its centre, and one a short way north, south, east and west. A sample like that is not a survey of every lot. In those samples Castle Hill sits on the Glenorie shale-country unit, Mascot on disturbed terrain, Penrith on the mainly flat Richmond unit, Beacon Hill mostly on the sandstone Lambert unit, and Marrickville on a mix of the Blacktown and Birrong units. Northern Beaches and The Hills map landslide risk, Bayside and Inner West map acid sulfate soils, and Penrith applies a flood planning control across its area.

Service area map — House Underpinning Sydney Areas served: Blacktown, Castle Hill, Mascot, Marrickville, Beacon Hill, Maroubra, Penrith, Baulkham Hills, Strathfield, Ashfield, Liverpool, Campbelltown, Newtown, Ryde, Epping, Parramatta, Hurstville, Chatswood, Hornsby, Paddington, Randwick, Bondi, Mosman, Leichhardt, Balmain, Caringbah South, Engadine and Sutherland. Positions are approximate locations of each named area; the outline is indicative only and is not a boundary. Castle Hill Penrith Baulkham Hills Epping Blacktown Parramatta Strathfield Liverpool Sutherland Engadine Campbelltown Hornsby Beacon Hill Chatswood Ryde Mosman Balmain Leichhardt Paddington Ashfield Bondi Newtown Marrickville Randwick Mascot Maroubra Hurstville Caringbah South
Areas served. Indicative positions — not a boundary, and not a location for this business.
  • Blacktown
  • Castle Hill
  • Mascot
  • Marrickville
  • Beacon Hill
  • Maroubra
  • Penrith
  • Baulkham Hills
  • Strathfield
  • Ashfield
  • Liverpool
  • Campbelltown
  • Newtown
  • Ryde
  • Epping
  • Parramatta
  • Hurstville
  • Chatswood
  • Hornsby
  • Paddington
  • Randwick
  • Bondi
  • Mosman
  • Leichhardt
  • Balmain
  • Caringbah South
  • Engadine
  • Sutherland

Six councils, five suburb pages

Sydney has no single planning authority for a dig beside a footing. Each of the six councils here has its own local environmental plan and development control plan, and what differs is which mapped land each attaches requirements to. We have not checked which other planning instruments apply to a given lot. The documents were read on 21 September 2026, some councils' fee and process pages could not be read, and a single lot is looked up with its council.

Suburbs without a page

Suburbs outside the five are covered on the same terms, among them Blacktown, Maroubra, Parramatta, Newtown and Sutherland. Pages were written where a council's controls or the state's mapping gave a suburb something specific to say; the rest repeat what the five already tell, and none has been ruled out.

Call (02) 9072 0403

Request a free quote

Prefer to talk? Call (02) 9072 0403.

Last reviewed · Updated · First published