Tasmania’s approval system is not a variation on the mainland model. It is a different system, built on different legislation, with different documents, different decision-makers and a council that plays a much smaller role than owners expect. If you have renovated in New South Wales or Victoria, almost none of your vocabulary transfers. There is no development application and complying development pathway, no home warranty insurance certificate, no planning certificate bought from council before exchange. Trying to map Hobart onto a mainland process is the fastest way to get a project stuck.
The thing to hold in your head is that there are two separate systems running in parallel. One is planning, which governs whether your proposal is an acceptable use and development of the land — its bulk, its siting, its effect on neighbours, its heritage and hazard context. The other is building, which governs whether the thing you build is structurally sound and code-compliant. They are assessed by different people, at different times, against different rules. You can need one and not the other, or both, or neither.
The second thing to hold in your head is that in Tasmania the building surveyor is a private practitioner you engage and pay yourself. They decide whether to certify your project, they inspect it at stages, and they retain power to issue directions and orders about defective work — during construction and for up to two years after completion. Council’s role in building is largely to receive notices and, for the highest category of work, to issue a permit. Understanding that shift in who holds the power explains most of what follows.
System one: planning under the Tasmanian Planning Scheme
Planning in Hobart sits under the Tasmanian Planning Scheme, which has two layers: the State Planning Provisions, a statewide set of zone and code rules, and the Hobart Local Provisions Schedule, which applies those zones and codes to specific land in the City of Hobart and adds local overlays such as heritage places and precincts.
A related guide to consider while planning this work is Heritage and Character Controls in Hobart: Renovating Without Getting Stuck.
Every proposal produces one of three planning outcomes.
No permit required
- The work is exempt, or it meets every applicable acceptable solution in the zone and in every applicable code.
- Typical residential examples: internal alterations with no external change; a modest rear deck below the relevant height and setback thresholds; a garden shed within the exempt size; like-for-like maintenance.
- Timeframe: immediate. There is nothing to lodge on the planning side.
- The trap: an exemption in the zone can be cancelled by an overlay. A shed that is exempt in an ordinary residential street may not be exempt in a heritage precinct or a landslip band.
Permitted
- The proposal complies with every acceptable solution that applies, so council must grant a permit — it has no discretion to refuse.
- Typical residential examples: a single-storey rear extension that sits within setbacks, height, site coverage and overshadowing standards; a carport that meets the acceptable solutions; a compliant new dwelling on a straightforward site.
- It is not advertised and neighbours cannot make representations.
- Timeframe: commonly around 28 days from a valid application, longer if council requests further information, which stops the statutory clock.
Discretionary
- The proposal relies on one or more performance criteria rather than meeting the acceptable solutions, or it sits within a code or overlay that makes it discretionary automatically.
- Typical residential examples: an extension that breaches a setback or height standard; anything overshadowing a neighbour beyond the acceptable limit; work on a Local Heritage Place or in a Local Heritage Precinct; development in higher landslip hazard bands; some bushfire-affected proposals.
- The application is advertised for 14 days and any person may lodge a representation. Council must consider representations, and its decision can be appealed to the Tasmanian Civil and Administrative Tribunal.
- Timeframe: commonly 42 days from a valid application, plus the time consumed by requests for further information, plus considerably longer if representations are received or the matter goes to a council committee.
- Crucially, a discretionary planning permit pushes your building work into Category 4 — the permit category — regardless of how simple the building work itself is. This is the single most important interaction between the two systems.
System two: the four building categories
Tasmania’s Building Act 2016 and the Director’s Determination split all building work into four categories. Work out which one you are in before you do anything else, because it determines your documents, your professionals and your cost.
Category 1 — low-risk work an owner can do
- No approval and no builder required. You can do it yourself.
- Residential examples: like-for-like repairs and replacements; small gazebos and sheds within the size thresholds; installing a skylight; a deck up to one metre above ground level; most fences.
- Replacing a rotten weatherboard, re-roofing like for like, painting, replacing floor coverings.
- Timeframe: nil. Start when you are ready.
- Caveat: plumbing, electrical and gas work still needs licensed practitioners, and planning overlays still apply.
Category 2 — low-risk work requiring a licensed builder
- No building approval, but a licensed builder must do the work.
- Residential examples: bathroom renovations; roofed verandahs; retaining walls up to 1.8 metres; larger sheds and gazebos above the Category 1 threshold.
- This is genuinely unusual in Australia. A full bathroom renovation in Tasmania needs no building permit, no Certificate of Likely Compliance and no building surveyor — provided it does not touch structure.
- The National Construction Code and the waterproofing standard still apply in full. There is simply nobody independently inspecting, which makes the builder and the written contract your only protection.
- Timeframe: nil for approvals. Program is set by the builder’s availability.
Category 3 — notifiable work
This is where most substantial residential projects land: new houses, renovations, extensions, decks above the low-risk threshold, swimming pools, and solar arrays over 38 square metres.
- Design drawings by a licensed designer — a licensed building designer or an architect. You cannot use your own sketches.
- Site reports where required: soil classification, geotechnical, landslip hazard report, bushfire assessment.
- Structural engineering for beams, footings, piers and retaining.
- Certification by a building surveyor, who issues a Certificate of Likely Compliance — a statement that the design, if built as documented, is likely to comply with the Building Act and the Code.
- A Notice of Work is lodged with council, identifying the practitioners involved.
- A Start Work Authorisation is issued before work commences.
- Council is notified but does not issue a building permit. This is the key difference from the mainland and from Category 4.
- Timeframe: allow 8–16 weeks from engaging a designer to being able to start, and longer if a landslip or bushfire report is in the chain.
Category 4 — permit work
- Everything above Category 3 in complexity, plus anything caught by owner-builder status, plus anything that has required a discretionary planning permit.
- All the Category 3 requirements — licensed designer, engineering, site reports, building surveyor, Certificate of Likely Compliance, Notice of Work, Start Work Authorisation — plus a formal building permit issued by council as permit authority.
- Residential examples: an extension to a heritage-listed cottage requiring a discretionary planning permit; a substantial new dwelling on a difficult site; work undertaken as an owner-builder.
- Timeframe: add roughly 3–6 weeks to the Category 3 program for the permit itself, on top of the discretionary planning permit timeline that got you here.
The documents, in plain terms
- Licensed designer drawings. Required for Categories 3 and 4. Building designer fees run 4–7% of build cost; architects 8–12%.
- Certificate of Likely Compliance. Issued by your building surveyor once the design package satisfies them. It is a forward-looking statement about the design, not a sign-off on completed work.
- Notice of Work. Lodged with council, naming the builder, designer, engineer and surveyor. It tells council the project exists and who is responsible.
- Start Work Authorisation. The document that lets work commence. Starting without one is an offence.
- Building permit. Category 4 only, issued by council acting as permit authority.
- Certificate of Final Inspection or Occupancy Permit at completion, depending on the work — the surveyor’s confirmation that the completed building satisfies the requirements.
- Building surveyor fees for Category 3 or 4: $2,500–$8,000.
The building surveyor’s role, and why it matters more here
- You engage and pay them directly. They are not a council officer and they are not on your builder’s payroll — and you should keep it that way.
- They can decline to certify a project. If your surveyor will not issue a Certificate of Likely Compliance, the project does not proceed in its current form.
- They inspect at nominated stages — footings, frame, waterproofing where applicable, final — and their inspection schedule is set at the outset.
- They can issue inspection directions and orders for defective work, requiring rectification. This power runs during construction and for up to two years after completion.
- Practical advice: appoint the surveyor early, before the design is finished. A surveyor consulted at concept stage will save you far more than their fee. One brought in at the end will find problems that are expensive to fix.
The overlays that change everything
In Hobart, the zone rarely determines your project. The overlays do. Check them for your specific address before you buy, and certainly before you commission a design.
A related guide to consider while planning this work is Decks, Pergolas and Alfresco Areas in Hobart: Rules, Costs and Design.
Landslip Hazard Code C15.0
Hobart is built on the slopes of kunanyi/Mount Wellington and landslip mapping covers substantial parts of the city. The code sets five hazard bands.
- Acceptable — no landslip constraint.
- Low — development is exempt unless it involves significant works.
- Medium — significant works trigger a report.
- Medium-active and High — areas with known landslip activity within roughly the last 200 years. Any development triggers a report.
A landslip hazard report is required for: any development in Medium-active or High bands; significant works in Low, Medium, Medium-active or High bands; critical, hazardous or vulnerable uses in all bands; and subdivisions in Medium and above.
- The report must be prepared by a Civil Engineer, Geotechnical Engineer or Engineering Geologist meeting the Director of Building Control’s qualification requirements. Not a builder, not a designer, not a general consultant.
- Cost: $3,500–$12,000, and complex sites cost more.
- Mapping originates with Mineral Resources Tasmania. Councils can adopt modified overlays where a qualified person justifies a change, so a mapped band is not always the final word — but changing it is a project in itself.
- There is also a separate Building in landslip hazard areas Determination from Consumer Building and Occupational Services, which applies to building approvals rather than planning. Landslip can therefore bite you twice, in two different systems.
- Allow 4–10 weeks for a report, and understand that its recommendations — piers, drainage, retaining, limits on cut and fill — will shape both the design and the cost.
Bushfire-Prone Areas Code C13.0
A large share of Hobart’s western and southern fringe is bushfire-prone: Fern Tree, Ridgeway, Mount Nelson, the upper slopes of Dynnyrne and South Hobart, upper Lenah Valley, Mount Stuart, Tolmans Hill, and the Chigwell and Berriedale fringe.
- You will need a Bushfire Hazard Management Plan prepared by a TFS-accredited bushfire practitioner. Nobody else can prepare one.
- Cost: $1,500–$5,000. Allow 3–6 weeks.
- The plan sets Hazard Management Areas around the building, static water supply requirements, and access requirements for firefighting vehicles — including driveway width, gradient and turning provision, which on a steep Hobart block can be the binding constraint on the whole design.
- It also drives a Bushfire Attack Level, and the BAL drives construction standards. BAL-29 and above adds materially to cost: shutters, ember screening, upgraded glazing, non-combustible decking, sarking.
- Start the bushfire assessment early. Discovering at the end of a design process that your driveway cannot meet access requirements is a redesign, not a tweak.
Heritage
Hobart has three distinct heritage layers and they are frequently confused.
- Local Heritage Place — an individually listed property under the Hobart Local Provisions Schedule. Planning approval is required for any use or development of the site.
- Local Heritage Precinct — an area listed for its collective character, again under the Local Provisions Schedule. Battery Point is the best known, one of the most intact early-colonial residential areas in Australia. Precincts also cover parts of central Hobart, North Hobart, South Hobart, West Hobart, New Town and Sandy Bay — but check the heritage overlay maps in the Hobart Local Provisions Schedule for your actual address rather than relying on any list, including this one.
- Tasmanian Heritage Register — the state-level listing under the Historic Cultural Heritage Act 1995. Proposals affecting a registered place are referred to the Tasmanian Heritage Council (1300 850 332) in addition to needing council planning approval. This adds a separate assessment and typically 6–12 weeks.
- Heritage listing does not prevent change. The City of Hobart’s own position is that modifications must be assessed so heritage characteristics are not lost — the test is impact on significance, not preservation in aspic.
- Rear and concealed additions are far more readily approved than changes to a street elevation.
- Expect conditions on materials, window profiles, roof form and colour.
- A technical point worth carrying into any heritage job: never repoint colonial sandstone or brick with cement mortar. It traps moisture in the stone and causes spalling and crumbling. Lime mortar repointing at $120–$280 per square metre of wall face is the correct approach.
- Almost all heritage work is discretionary, which means 14 days of advertising, the possibility of representations — and Category 4 building work as a consequence.
Worked examples
- New kitchen, same footprint, no structural change, no heritage overlay. Planning: no permit required. Building: low-risk. Start when your joiner is free.
- Full bathroom renovation, same footprint. Planning: no permit required. Building: Category 2 — licensed builder, no approval.
- Deck 800mm above ground in the back yard, no overlays. Planning: likely exempt. Building: Category 1.
- Deck 2.4 metres above ground on a sloping site. Planning: check setbacks and privacy standards; may be permitted or discretionary. Building: Category 3 — designer, engineer, surveyor, Notice of Work.
- Single-storey rear extension in Moonah, complies with all standards. Planning: permitted, around 28 days. Building: Category 3.
- Same extension in a heritage precinct in West Hobart. Planning: discretionary, advertised 14 days, 42 days plus. Building: Category 4, because a discretionary permit was required.
- Extension in a Medium-active landslip band at Tolmans Hill. Landslip hazard report required; planning discretionary; building Category 4; add $3,500–$12,000 and a couple of months.
- Renovation of a Tasmanian Heritage Register listed cottage in Battery Point. Referral to the Tasmanian Heritage Council, discretionary planning permit, Category 4 building work. Six to twelve months of approvals is realistic.
- Retaining wall 1.5 metres high. Building: Category 2. Above 1.8 metres it becomes Category 3.
- Solar array of 45 square metres. Building: Category 3 — over the 38 square metre threshold.
Realistic timeframes, end to end
- Category 1, no planning permit: nil. Start immediately.
- Category 2, no planning permit: nil for approvals; the builder’s calendar is the constraint.
- Permitted planning plus Category 3: 3–5 months from engaging a designer to Start Work Authorisation.
- Discretionary planning plus Category 4: 5–9 months, and longer if representations are received or the matter is appealed.
- Add a landslip hazard report: 4–10 weeks.
- Add a Bushfire Hazard Management Plan: 3–6 weeks.
- Add a Tasmanian Heritage Council referral: 6–12 weeks.
- Add a further information request from council: however long you take to answer it — the statutory clock stops.
What to do first, in order
- Check the zone, the codes and every overlay for your address in the Hobart Local Provisions Schedule.
- Check the Tasmanian Heritage Register separately — local and state listings are different registers.
- Check the landslip band and the bushfire-prone area mapping.
- Talk to a licensed designer who knows which pathway your idea will attract.
- Engage a building surveyor early and ask, in writing, which category applies.
- Only then commission a full design and start pricing.
Related reading
Approvals only make sense alongside costs and program. The Hobart price guide covers what these pathways add to a budget, and the extensions guide works through the Category 3 and 4 process on a real project. If you are in a precinct or on the state register, the heritage controls article goes much deeper on what gets approved and what does not. Bathroom owners should read the Category 2 bathroom guide to understand what no approval really means in practice, and anyone planning a deck should start with decks, pergolas and alfresco areas, where the one-metre threshold decides everything.
A view on Hobart’s system
The Tasmanian model asks more of owners than the mainland does and gives them more room in return. Categories 1 and 2 are a genuine liberalisation — you can build a deck or renovate a bathroom without the state standing over you. But that liberty is paired with a private building surveyor whom you choose, pay and rely on, and a council whose involvement in most projects is limited to receiving notices.
The practical consequence is that the quality of your project depends almost entirely on the quality of the people you engage. There is no system that will catch a bad design for you at Category 2, and at Category 3 the only person likely to catch it is a building surveyor you appointed and could just as easily have appointed for their willingness to say yes. Choose the ones who ask difficult questions early. In a state where there is no home warranty insurance and no council permit standing behind most renovation work, the professionals you pick are the system.