Victoria · Planning guide
Dual occupancy rules in Victoria
A second dwelling on a lot in a Victorian residential zone always needs a planning permit, because the zone requires one to construct a dwelling where one already exists. The application is assessed against Clause 55, the residential development standards, and against the minimum garden area and maximum height rules in the zone. Whether the design meets the standards decides how much notice, review and negotiation the project attracts.
Sources read on 9 September 2026. Provisions are quoted word for word from the instrument.
The permit trigger for a second dwelling
In Victoria, dual occupancy is not a defined use. Two houses on one lot are simply two dwellings, and Dwelling is a Section 1 use in the residential zones, so the use itself needs no permit. The permit comes from the development side of the zone.
The General Residential Zone requires a permit to construct a dwelling if there is at least one dwelling existing on the lot, to construct two or more dwellings on a lot, and to extend a dwelling where there are two or more on the lot. The Neighbourhood Residential Zone has the same wording in clause 32.09-7, and the other residential zones carry equivalent clauses.
That means the classic side by side or front and back dual occupancy is a planning permit every time, in every residential zone. The only second dwelling that escapes the trigger is a small second dwelling of 60 square metres or less, which has its own pathway and cannot later be subdivided.
Dual occupancy projects often start with a question about whether the existing house can be kept. Keeping it does not avoid the permit, because constructing a dwelling where one already exists is the trigger, and extending a dwelling where there are two or more on the lot is caught by the same clause. What keeping the house can do is simplify the Clause 55 assessment, since part of the neighbourhood character context is already fixed and the new dwelling is usually confined to the rear.
A permit is required to: Construct a dwelling if there is at least one dwelling existing on the lot. Construct two or more dwellings on a lot. Extend a dwelling if there are two or more dwellings on the lot. Construct or extend a dwelling if it is on common property. Construct or extend a residential building.
Read the source · retrieved 9 September 2026
A permit is required to: Construct a dwelling if there is at least one dwelling existing on the lot. Construct two or more dwellings on a lot. Extend a dwelling if there are two or more dwellings on the lot.
Read the source · retrieved 9 September 2026
A building with a gross floor area of 60 square metres or less, on the same lot as an existing dwelling and used as a self-contained residence, which must include: a) a kitchen sink; b) food preparation facilities; c) a bath or shower; and d) a toilet and wash basin.
Read the source · retrieved 9 September 2026
Clause 55, the standards a dual occupancy is tested against
A development of three storeys or less must meet the requirements of Clause 55. Clause 55 is built from objectives and standards. Each objective must be met. If the design meets the numbered standard, the objective is deemed met and the council does not have to look further. If a standard is not met, the council considers the decision guidelines to decide whether the objective is still achieved.
Since Amendment VC267 in March 2025, Clause 55 is arranged into neighbourhood character, liveability, external amenity and sustainability. The neighbourhood character standards carry the numbers most people ask about: street setback, building height, side and rear setbacks, walls on boundaries, site coverage, access, tree canopy and front fences.
Site coverage is a good example of how the zone and Clause 55 interact. The default maximum is set in a table by zone, and a council schedule can only raise it, not lower it. In the General Residential Zone the default is 65 per cent, in the Neighbourhood Residential Zone and Township Zone 60 per cent, and in the growth, mixed use and Housing Choice and Transport zones 70 per cent.
A development of three storeys or less, excluding a basement, must meet the requirements of clause 55.
Read the source · retrieved 9 September 2026
A development must meet all of the applicable objectives contained in this clause. If a development meets a standard: The corresponding objective is deemed to be met; The responsible authority is not required to consider the corresponding decision guidelines. If a development does not meet a standard, the responsible authority must consider the applicable decision guidelines in determining whether the corresponding objective is met.
Read the source · retrieved 9 September 2026
The site area covered by buildings does not exceed: The maximum site coverage specified in a schedule to the zone; or If no maximum site coverage is specified in a schedule to the zone, the percentage specified in Table B2-5. If the maximum site coverage is specified in a schedule to a zone, it must be greater than the percentage specified in Table B2-5. Table B2-5 Site coverage Zone Area Neighbourhood Residential Zone Township Zone 60 per cent General Residential Zone 65 per cent Residential Growth Zone Mixed Use Zone Housing Choice and Transport Zone 70 per cent
Read the source · retrieved 9 September 2026
Garden area and height, the zone rules that sit above Clause 55
Two rules in the zone itself are mandatory and cannot be traded off through decision guidelines. The first is minimum garden area. An application to construct a dwelling on a lot must keep a share of the lot as garden area, scaling with lot size: 25 per cent for lots of 400 to 500 square metres, 30 per cent above 500 to 650 square metres, and 35 per cent above 650 square metres. Garden area has its own definition and excludes driveways and parking.
The second is maximum building height. In the General Residential Zone, where the schedule is silent, a dwelling cannot exceed 11 metres or 3 storeys. In the Neighbourhood Residential Zone the default is 9 metres and 2 storeys. A council schedule can set different figures, and both rules apply whether or not a permit is needed.
The Housing Choice and Transport Zone, introduced in 2025 around selected activity centres and train stations, works differently. Its heights are set by a table inside the zone rather than a council schedule, and they step up on a large site.
An application to construct or extend a dwelling, small second dwelling or residential building on a lot must provide a minimum garden area as set out in the following table: Lot size Minimum percentage of a lot set aside as garden area 400 - 500 sqm 25% Above 500 - 650 sqm 30% Above 650 sqm 35%
Read the source · retrieved 9 September 2026
If no maximum building height or maximum number of storeys is specified in a schedule to this zone: the building height must not exceed 11 metres; and the building must contain no more than 3 storeys at any point.
Read the source · retrieved 9 September 2026
If no maximum building height or maximum number of storeys is specified in a schedule to this zone: the building height must not exceed 9 metres; and the building must contain no more than 2 storeys at any point.
Read the source · retrieved 9 September 2026
Any area on a lot with a minimum dimension of 1 metre that does not include: a) a dwelling, small second dwelling or residential building, except for: an eave, fascia or gutter that does not exceed a total width of 600mm; a pergola; unroofed terraces, patios, decks, steps or landings less than 800mm in height; a basement that does not project above ground level; any outbuilding that does not exceed a gross floor area of 10 square metres; and domestic services normal to a dwelling, small second dwelling or residential building; b) a driveway; or c) an area set aside for car parking.
Read the source · retrieved 9 September 2026
Streamlined assessment when the standards are met
Meeting the Clause 55 standards does more than smooth the assessment. For a development of three storeys or less, the zone exempts the application from the decision requirements and the third party review rights of the Planning and Environment Act when all the listed standards are met. In practice that removes objector appeals to the Tribunal.
A two dwelling project that meets the listed neighbourhood character and external amenity standards is also a VicSmart class of application in the residential zones. VicSmart applications are exempt from notice, are decided against a short list of matters, and are not tested against the Municipal Planning Strategy or the wider policy framework.
The catch is that VicSmart only applies where a permit is needed only under the provisions specified as VicSmart classes. If an overlay at the parcel also requires a permit and is not itself a VicSmart class, the whole application falls back to the standard process.
The liveability standards in clause 55.03 sit alongside the neighbourhood character standards and cover the amenity of the new dwellings themselves. They are not on the VicSmart list and are not part of the notice and review exemption, so a two dwelling application must still satisfy their objectives, but a miss on one of them does not by itself reopen third party review. The external amenity standards, which protect the neighbours, are the ones that do.
An application under clause 32.08-7 for a development of three storeys or less, excluding a basement, is exempt from the decision requirements of section 64(1), (2) and (3) and the review rights of section 82(1) of the Act if all the applicable standards under clauses 55.02, 55.04-1, 55.04-2, 55.04-3, 55.04-4 and 55.05-2 are met.
Read the source · retrieved 9 September 2026
Construct one dwelling if there is no more than one dwelling existing on a lot, extend a dwelling if there are two dwellings on a lot, or construct two dwellings on a lot, if the development meets the following standards of clause 55: clause 55.02-1 Street setback clause 55.02-2 Building height clause 55.02-3 Side and rear setbacks clause 55.02-4 Walls on boundaries clause 55.02-5 Site coverage clause 55.02-6 Access clause 55.02-7 Tree canopy clause 55.02-8 Front fences clause 55.04-1 Daylight to existing windows clause 55.04-2 Existing north-facing windows clause 55.04-3 Overshadowing secluded open space clause 55.04-4 Overlooking clause 55.05-2 Overshadowing domestic solar energy systems
Read the source · retrieved 9 September 2026
An application is a VicSmart application if all of the following requirements are met: The application is in a class or classes specified in a provision of this planning scheme. A permit is required only under the provisions of this planning scheme that are specified as a VicSmart application, and not under any other provision of this planning scheme. Nothing authorised by the grant of a permit would result in a breach of a registered restrictive covenant.
Read the source · retrieved 9 September 2026
Subdividing the two dwellings later
Most dual occupancy owners want separate titles. Subdivision needs its own permit in every residential zone, but where each lot will contain an existing dwelling the application is spared most of Clause 56 and is exempt from notice and review. A VicSmart class also covers a two lot subdivision where a permit for up to two dwellings has been issued and each lot will hold one of them.
A public open space contribution can apply to the subdivision at the rate in the council's schedule to Clause 53.01, though a two lot subdivision the council considers unlikely to be further split is exempt. The rate itself is council specific and is not stated here.
Subdivide land into two lots if: A permit has been issued under a provision of a residential zone to construct up to two dwellings on the land and the permit has not expired. Each lot will contain either: one existing dwelling; or one dwelling permitted to be constructed in accordance with the permit.
Read the source · retrieved 9 September 2026
It subdivides land into two lots and the council considers it unlikely that each lot will be further subdivided.
Read the source · retrieved 9 September 2026
What changes council by council in Victoria
The state instruments set the frame. These points are set by each council's own instrument or mapping, so the answer for an address depends on which council it sits in.
- The schedule to the zone can set the maximum building height and number of storeys, the street setback, site coverage, front fence height and the Clause 55 standards listed in clause 32.08-8, and can exempt land from the minimum garden area requirement.
- The Neighbourhood Residential Zone schedule must contain neighbourhood, heritage, environment or landscape character objectives, and these feed the Clause 55 decision guidelines.
- Overlays on the council's maps (Heritage, Neighbourhood Character, Design and Development, Bushfire Management, Land Subject to Inundation, Special Building and others) can add permit triggers and modify Clause 55 standards through their schedules.
- The public open space contribution rate is set in the council's schedule to Clause 53.01.
- Local VicSmart classes can be added in the council's schedule to Clause 59.15.
For your address
How the $150 report settles this for one site
A Casa preliminary planning report identifies the zone and schedule at the parcel, reads the garden area and height rules that bind the site, and lists every overlay that adds a permit trigger or modifies Clause 55. It then sets out the pathway, standard permit or VicSmart, and the Clause 55 standards the design will need to meet for the notice and review exemptions to apply. It does not design the buildings or predict the council's discretion where a standard is not met.
Common questions
Do I need a planning permit for a dual occupancy in Victoria?
Yes. Every residential zone requires a permit to construct a dwelling if there is at least one dwelling existing on the lot, and to construct two or more dwellings on a lot.
What is the minimum lot size for a dual occupancy in Victoria?
The Victoria Planning Provisions set no minimum lot size for two dwellings on a lot. What limits a small lot is the minimum garden area requirement, which starts at 25 per cent for lots of 400 to 500 square metres, together with site coverage, setbacks and the other Clause 55 standards.
How tall can a dual occupancy be?
Where the council schedule is silent, 11 metres and 3 storeys in the General Residential Zone and 9 metres and 2 storeys in the Neighbourhood Residential Zone. The schedule to the zone at your parcel can set different figures.
Can neighbours object to my dual occupancy?
If the development is three storeys or less and meets all the listed Clause 55 standards, the zone exempts the application from the decision requirements of section 64 and the review rights of section 82 of the Act. If a standard is not met, normal notice and review apply.
Can I subdivide after building?
A permit is required to subdivide, but where each lot will contain an existing dwelling the application is exempt from notice and review, and a two lot subdivision matching an existing permit for up to two dwellings is a VicSmart class.
Sources read for this guide
- Victoria Planning Provisions, Clause 32.08 General Residential Zone (VPP as amended by VC312, 16 June 2026)read 9 September 2026
- Victoria Planning Provisions, Clause 32.09 Neighbourhood Residential Zoneread 9 September 2026
- Victoria Planning Provisions, Clause 55 and sub-clause 55.02read 9 September 2026
- Victoria Planning Provisions, Clause 71.06 Operation of VicSmart applications and processread 9 September 2026
- Victoria Planning Provisions, Clause 53.01 Public open space contribution and subdivisionread 9 September 2026
- Victoria Planning Provisions, Clauses 73.01 and 73.03 Meaning of termsread 9 September 2026
- Planning scheme API used for every VPP clause (scheme vpp, amendment VC312 gazetted 16/06/2026)read 9 September 2026
Not covered here
- The Clause 55 liveability standards (55.03), including private open space and car parking, were not quoted in this guide.
- Developments of four to six storeys are assessed under Clause 57 and apartment developments of seven storeys or more under Clause 58. Neither is covered here.
More VIC guides
- Granny flat rules in Victoria
- Subdivision rules in Victoria
- Fast track approvals in Victoria
- Height and setback rules in Victoria
- Do I need a planning permit in Victoria?
Dual occupancy and duplex rules in other states
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