Tasmania 90sqm Secondary Residences: October Assessment Update

Tasmania’s proposed 90sqm secondary residence amendment remains under assessment in the Commission record checked on 3 October 2026. Updated 3 October 2026. The record includes September hearings and later directions, but no published decision in its decision section.

This updates our July report. The earlier article’s forecast completion window should not be used as an approval date, and its suggested universal site-cost allowance has been removed because it was not supported by a suitable source.

What the public record shows

The Tasmanian Planning Commission’s AM-SPP-01-2026 record describes a proposal to increase the allowable gross floor area for secondary residences from 60m² to 90m², alongside changes to clarify requirements.

Exhibition ran from 10 June to 22 July 2026. The record lists hearings on 16 and 17 September and a further Commission direction dated 28 September. These are assessment milestones; they are not a published permission to use the proposed larger allowance.

The Commission page also provides the draft, explanatory material, representations and later submissions. Use the current record when discussing the proposal rather than relying on an older supplier announcement.

A proposed allowance is not a property approval

Ask a planner which operative provisions apply to the address and intended development. A discussion of the proposed floor-area change does not resolve zoning, site standards, overlays or the separate building requirements.

Don’t assume a larger proposal necessarily has an available discretionary route either. Have the practitioner explain the actual pathway and its basis. If the project depends on a future amendment, record that dependency before committing to a supplier’s design or production slot.

Our Tasmania rules guide provides the wider context. The responsible authority’s operative provisions remain the basis for a property decision.

What to ask before ordering a module

Give the supplier the same brief you give the planning adviser: proposed use, floor area, site information and intended timeframe. Ask which commitments can be made before the planning position is resolved and what happens if the design must change.

Separate the building supply scope from foundations, access, service connections and other site work. Obtain prices for the address instead of adding a national allowance to a brochure figure. A proposal for a larger dwelling can also change those parts of the project.

Follow the Commission record for a decision and any subsequent commencement information. We will distinguish that outcome from consultation submissions and industry advocacy. Related coverage is in the planning news hub; the quote comparison guide helps keep commercial assumptions visible while planning questions remain open.

By The Granny Flat Guide Team. Last updated October 2026. About our research · Project budget calculator