Deck & pergola rules in Tasmania (2026)
Low decks are 'low-risk work' with no building permit
A deck less than 1 m above the ground is 'low-risk work' in Tasmania: no building permit and no building surveyor needed, and an owner or competent person can build it, though it must still comply. At 1 m or more above ground it becomes 'notifiable work' and needs a building surveyor. Pergolas up to 18 m² and 3.5 m are also low-risk.
Key rules at a glance
| Deck low-risk (no permit) | Less than 1 m above the ground or trafficable surface below |
| Deck notifiable | 1 m or more above ground - needs a building surveyor (notifiable work) |
| Pergola low-risk | Roofless, 18 m² or less and 3.5 m or less high |
| Who can build | Low-risk work can be done by the owner or a competent person |
| Compliance | Must still meet the National Construction Code and the Building Act |
| Planning | A planning permit may still be needed on heritage, flood or bushfire overlay land |
Conditions & eligibility
- Height is measured from the deck to the surface directly below it
- Low-risk status is lost at 1 m or more above ground (it becomes notifiable work)
- Low-risk work still has to comply with all technical standards
- Some low-risk work has area and siting limits - check the Director's Determination
- A separate planning approval can apply even when no building permit is needed
Heritage, flood and bushfire controls on your specific lot can remove the fast-track and require a full application, even when the general rules say you're fine.
How approval works in Tasmania
Tasmania's Building Act 2016 grades work as low-risk (Category 1, no permit), notifiable (Category 3, building surveyor notified) or permit work (Category 4, full building permit). A planning permit under the local scheme can still apply on overlay land.
Use the PlanBuild Tasmania property report to confirm planning overlays before starting.
Planning rules across Tasmania: every route to approval, and the answer for other projects →
Decks & Pergolas rules by council in Tasmania
Local councils apply the Tasmania framework and can add their own controls. Pick your council:
Frequently asked questions
Do I need a permit to build a deck in Tasmania?
Not for a deck less than 1 m above the ground, which is low-risk work needing no building permit or building surveyor. A deck 1 m or more above the ground is notifiable work and must be handled by a building surveyor.
How high can a deck be without a permit in Tasmania?
Up to just under 1 m above the surface below it. At 1 m or more it moves from low-risk to notifiable work, which requires a building surveyor.
Does a pergola need approval in Tasmania?
A roofless pergola of 18 m² or less and no higher than 3.5 m is usually low-risk work with no building permit, but a planning permit can still apply on heritage or hazard-overlay land.
Sources
Related building rules
This is general guidance, not professional planning advice. Figures are summarised from the sources above and can change — confirm with your council or the Building Standards Tasmania before starting work. Last reviewed: July 2026.
Talk to a town planner in Tasmania
This page covers the general rules. A qualified town planner can tell you what applies to your block, including the zone, overlays and approval path, before you spend money on drawings.
- Qualified, practising town planners
- Advice specific to your property
- Free, with no obligation