Skip to content

Tasmania 90sqm Secondary Dwelling Consultation Open in 2026

Tasmania granny flat 90sqm consultation is open on draft State Planning Provisions Amendment 01/2026, which would lift secondary residence GFA from 60 to 90 square metres. Public comment in 2026 is the window before any new cap becomes law. Updated 5 August 2026.

The official project page at State Planning Tasmania (SPP Amendment 01/2026) describes the secondary residences package, timeline, and submission options. The Premier of Tasmania’s June 2026 release invited feedback on larger, clearer granny flat rules statewide.

Disclaimer: News summary only. The 60 m² cap remains in force until amended provisions are gazetted. Confirm live rules with your council before you order a 90 m² module.

Small modern backyard cottage with timber deck

What consultation is deciding

Secondary residences are the planning term for granny flats on single-house lots. Raising the GFA ceiling to 90 square metres would let designers fit two bedrooms, storage, and accessible bathrooms without squeezing into the current 60 m² box.

The amendment bundle also clarifies when secondary residences are permitted without full discretionary planning assessment, subject to development standards and any local zone schedules. Building approval and National Construction Code compliance would still apply.

Consultation submissions from industry groups, councils, and residents can influence final wording on site coverage, parking, and private open space. The Housing Industry Association lodged supportive comments in July 2026 while pushing for coverage tweaks so 90 m² builds fit typical suburban blocks.

Why August 2026 still means “design to 60sqm”

Until State Planning Tasmania publishes enacted SPP text, certifiers and councils must apply the existing 60 m² framework. Ordering a 90 m² transportable dwelling on the hope that law changes by delivery date exposes you to redesign costs or a discretionary planning fight.

Our evergreen guide Tasmania granny flat 90sqm rules recommends dual-option drawings: a compliant 60 m² fallback and a 90 m² preferred layout ready to lodge once gazettal occurs.

Track progress alongside planning.tas.gov.au policy news and council fact sheets for Hobart, Launceston, or your regional municipality.

How to participate or follow outcomes

Landowners can read discussion papers on the State Planning consultation hub and submit comments when rounds are open. Even if you miss a closing date, monitoring the consultation page shows when final determinations and commencement dates are published.

Builders should communicate clearly in quotes whether pricing assumes 60 m² or 90 m² approval risk. Shell-only module prices rarely include Tasmanian wind bracing, driveway upgrades, or sewer connections that can add tens of thousands on sloping sites.

Links to earlier 2026 coverage

Frequently Asked Questions

Is the Tasmania granny flat 90sqm consultation already law?

No. Consultation and assessment precede gazettal. Build to 60 m² unless you accept discretionary approval risk for a larger footprint.

Where is the official consultation page?

State Planning Tasmania hosts SPP Amendment 01/2026 under Have Your Say on stateplanning.tas.gov.au.

Will 90sqm match NSW and Victoria?

Ninety square metres aligns Tasmania with ACT and proposed national direction, but each state keeps different pathways, setbacks, and coverage rules. Compare on your title, not headlines alone.

Primary sources

These cards are an editorial summary of official pages. The Granny Flat Guide is not a certifier, council or licensed builder. Check the live official URL before you lodge or sign.

  • Your Home (Australian Government)Your Home: Australia's guide to environmentally sustainable homesJurisdiction: Australia · Effective: Living resource (check current page) · Checked on: 2026-09-02 · Layer: editorial summary
  • Australian Building Codes BoardNational Construction CodeJurisdiction: Australia · Effective: NCC 2022 (confirm current edition) · Checked on: 2026-09-02 · Layer: building approval
  • Victorian Building AuthorityBuilding Act 1993 / small second dwelling settingsJurisdiction: Victoria · Effective: Confirm current VBA guidance · Checked on: 2026-09-02 · Layer: building approval
  • QBCC (Queensland)Queensland Building and Construction Commission licensingJurisdiction: Queensland · Effective: Confirm current QBCC page · Checked on: 2026-09-02 · Layer: building approval
See our editorial standards for how we research and update guides.
About The Granny Flat Guide

Independent Australian research on secondary dwellings and backyard housing. We publish cost guides, council rules and supplier reviews. We are not a builder. See our editorial standards.



Work Out Your Real Budget

Use our free on-page cost calculator to estimate preliminaries, site costs, the build and finishes. Results update instantly in your browser.

Open the Cost Calculator

Planning tools

Approval wizard, setback checker and build-type comparator in one place.

Open planning tools

Compare supplier quotes

Get matched with up to three vetted builders or kit suppliers for your site and budget.

Get a quote