Tasmania’s draft amendment AM-SPP-01-2026 proposes lifting the maximum gross floor area for secondary residences from 60m² to 90m² and clarifying associated requirements. A hearing is scheduled for September 2026, so this is an active proposal—not a rule investors should assume is final.
What extra space could change
Ninety square metres can support a more functional two-bedroom product, broader tenant appeal and better storage. It may also increase build cost, site coverage, parking pressure and servicing requirements.
Test the property first
- Confirm zone, overlays and the current secondary-residence standards.
- Measure setbacks, private open space, access and parking.
- Check sewer, stormwater, slope, bushfire and heritage constraints.
- Price separate metering, retaining, driveways and landscaping.
- Confirm whether title separation is possible—it often is not.
Do not capitalise a draft
Never pay today for an approval outcome that has not commenced. Structure due diligence around the current law and treat any future change as upside until the final instrument and commencement date are confirmed.
Rent is only half the feasibility
Compare incremental rent with the complete delivered cost, finance, vacancy, management, maintenance and insurance. Also check whether the main dwelling loses amenity or resale appeal.
TPC deal lens
A secondary residence can improve cash flow without a subdivision, but it must fit the site and the exit. The strongest opportunity is one that works under today’s controls and becomes better—not merely possible—if the amendment proceeds.
Sources and image attribution
- Tasmanian Planning Commission — Draft amendment AM-SPP-01-2026
- Feature photo: Nick-D, Wikimedia Commons, CC BY-SA 4.0. Cropped for presentation; licence retained.
This article is general property education, not financial, legal, planning or building advice. Verify the current rules and obtain qualified advice for the specific site.
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What should investors know about What extra space could change?
Ninety square metres can support a more functional two-bedroom product, broader tenant appeal and better storage. It may also increase build cost, site coverage, parking pressure and servicing requirements.
What should investors know about Test the property first Confirm zone, overlays and the current secondary-residence standards. Measure setbacks, private open space, access and parking. Check sewer, stormwater, slope, bushfire and heritage constraints. Price separate metering, retaining, driveways and landscaping. Confirm whether title separation is possible—it often is not. Do not capitalise a draft?
Never pay today for an approval outcome that has not commenced. Structure due diligence around the current law and treat any future change as upside until the final instrument and commencement date are confirmed.
What should investors know about Rent is only half the feasibility?
Compare incremental rent with the complete delivered cost, finance, vacancy, management, maintenance and insurance. Also check whether the main dwelling loses amenity or resale appeal.
What should investors know about TPC deal lens?
A secondary residence can improve cash flow without a subdivision, but it must fit the site and the exit. The strongest opportunity is one that works under today’s controls and becomes better—not merely possible—if the amendment proceeds.
Should investors get professional advice about Tasmania’s Proposed 90m² Granny Flat Rule: Bigger Is Useful—If The Numbers Still Work?
Yes. This article is general education, so legal, tax, finance, planning or building questions should be checked with appropriately qualified professionals before acting.
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