Retaining Walls in Launceston

What retaining walls in Launceston actually involves

The Determination lists a retaining wall in Category 1, Low Risk Building Work, where the maximum height of the ground to be retained is 500 mm if the wall is within 1500 mm of a property boundary, a road or a path that is a right of way on another property, and otherwise 1.2 m. Category 2, Low Risk Building Work, lists a retaining wall with a maximum height of the ground to be retained of 1.8 m, engineer designed. Category 3, Notifiable Work, lists retaining walls as unlimited in height, and the Determination says that work can only be done where a Building Surveyor is engaged, carries out an assessment and notifies the relevant Permit Authority. Those lines are the State's, from the Director of Building Control's Determination (Version 1.4, 12 March 2021). The Category 1 and 2 headings also say who may do the work: read them in the Determination, because this site makes no statement about who is entitled to do any category of work.

What the City of Launceston says

On the copy of its Building Permits page that we read on 6 October 2026, the City restates the State's four categories of building work, says Category 1 work needs no permit if all the criteria are met, says all other work outside Categories 1, 2 and 3 requires a Building Permit from the Council, and asks you to contact the Council Building Department before commencing any building or plumbing work. The page does not name retaining walls. The wall limits above are therefore the State's, not the City's.

Planning is a separate question

The Determination says there is no connection between the requirement for planning approval and the category of building work, so a wall may need a planning permit and not a building permit, or the other way round. The City says planning controls the use and development of land, and building controls how the development will be constructed. Whether a retaining wall needs a planning permit in Launceston is not something we read; the City's planning tools are on the next page.

Parts of the City sit on mapped landslip bands or on a floodplain, and the State lists hazard areas among the limits on a low-risk wall. The suburbs page shows four of them with their sources.

Retaining Walls in Launceston — common questions

How high can I build a retaining wall without a Building Surveyor?

The State's Category 1 lists a retaining wall up to 500 mm of retained ground within 1500 mm of a boundary, a road or a right-of-way path, and otherwise up to 1.2 m, and Category 2 goes to 1.8 m, engineer designed. Only a wall with no height limit is Category 3, which needs a Building Surveyor. Ask a Building Surveyor which category your wall falls in.

Does the City of Launceston set its own height limits?

Not on the pages we read. Its Building Permits page restates the State's four categories and does not name retaining walls, so the height lines here are the State's.

Who decides whether my wall needs an approval?

The City's Building Department and, for Notifiable Work, a Building Surveyor. This site cannot say.