Minimum Garden Area Requirement in Victoria: Essential Guide for Property Developers

Understanding Victoria’s Minimum Garden Area Requirement

For property developers operating in Melbourne’s residential zones, the minimum garden area requirement represents one of Victoria’s most significant mandatory planning controls. Introduced in March 2017 through Amendment VC110, this regulation fundamentally changed how residential land can be developed across the Neighbourhood Residential Zone (NRZ) and General Residential Zone (GRZ).

Unlike discretionary ResCode standards that allow for variation, the garden area requirement is mandatory—meaning your planning permit application will be refused if it doesn’t comply. With Victoria’s population projected to exceed 6 million by 2030, understanding these requirements is essential for developers seeking to maximise site yield whilst maintaining approval certainty.

This guide provides property developers with practical information on navigating Victoria’s garden area provisions, including recent clarifications, calculation methods, and strategic approaches to site planning that protect your development feasibility.

What Is the Minimum Garden Area Requirement?

The minimum garden area requirement mandates that a specific percentage of your lot must remain as landscaped open space when developing or subdividing land in the NRZ or GRZ. This percentage varies based on lot size and applies to both subdivision applications creating new lots and development applications for dwellings or residential buildings.

The requirement operates as a mandatory control under Clause 32.09 (NRZ) and Clause 32.08 (GRZ) of the Victoria Planning Provisions. Unlike other ResCode standards, responsible authorities cannot approve applications that fail to meet the garden area requirement—there is no discretion to vary this control based on design merit or site constraints.

Mandatory Percentages by Lot Size

The required garden area percentage increases with lot size:

• 400-500 square metres: 25% minimum garden area
• 501-650 square metres: 30% minimum garden area
• Above 650 square metres: 35% minimum garden area

For a 600-square-metre lot in the City of Boroondara, you must provide 180 square metres (30%) as garden area. On an 800-square-metre site in Manningham City Council, the requirement increases to 280 square metres (35%). These percentages apply to the total lot area, not just the developable area after setbacks.

Where Does the Requirement Apply?

The garden area requirement applies specifically to land within the Neighbourhood Residential Zone and General Residential Zone. These zones cover the majority of Melbourne’s established residential suburbs, including extensive areas across the Eastern Suburbs.

Application Triggers

The requirement must be satisfied when:

• Subdividing land to create a vacant residential lot less than 400 square metres in area
• Constructing or extending a dwelling or residential building
• Constructing or extending a small second dwelling (such as a secondary dwelling behind an existing house)

For subdivision applications, the 25% garden area requirement applies to each new lot created that is less than 400 square metres. This means if you’re subdividing a 1,200-square-metre site in Knox City Council into three lots of 350 square metres each, every new lot must demonstrate 87.5 square metres (25%) of garden area capability.

Development Applications

For development applications, the applicable percentage depends on the existing lot size. If you’re proposing a multi-unit development on a 650-square-metre lot in the City of Whitehorse, you must provide 195 square metres (30%) as garden area across the entire development—not per dwelling.

This distinction is critical: when multiple dwellings are proposed on a single lot, the garden area requirement applies to the lot as a whole. You don’t need to provide the minimum percentage for each individual dwelling, which would make most multi-unit developments unviable.

What Counts as Garden Area?

The definition of “garden area” was significantly clarified through Amendment VC143 in May 2018, following confusion and inconsistent VCAT decisions. Understanding what can and cannot be included in your garden area calculation directly affects your development yield and site layout.

Included in Garden Area

Garden area is defined as any area on a lot with a minimum dimension of 1 metre that does not include buildings, driveways, or car parking. This means the following elements can be counted towards your garden area requirement:

• Lawns and garden beds
• Swimming pools and spas
• Tennis courts
• Paved pathways and courtyards
• Open entertaining areas (unroofed terraces, patios, decks)
• Areas under eaves, fascias, or gutters not exceeding 600mm total width
• Areas under pergolas (open roof structures)
• Areas under unroofed terraces, patios, decks, steps, or landings less than 800mm in height
• Areas above basements that do not project above natural ground level
• Areas under outbuildings not exceeding 10 square metres gross floor area (garden sheds, pool equipment rooms)
• Areas under domestic services (air-conditioning units, hot water services, fuel tanks, water tanks, waste receptacles, mailboxes)

The 600mm eave width allowance is particularly valuable for developers. On a typical dwelling with 30 metres of external wall perimeter, this provision can add 18 square metres to your garden area calculation—potentially the difference between compliance and refusal on a constrained site.

Excluded from Garden Area

The following elements cannot be counted towards the garden area requirement:

• Driveways and crossovers
• Areas set aside for car parking (including uncovered parking spaces)
• Buildings and roofed areas (including carports, garages, verandahs, porches, covered alfresco areas)
• Eaves, fascias, or gutters exceeding 600mm total width
• Outbuildings exceeding 10 square metres gross floor area
• Basements projecting above natural ground level
• Areas under balconies or cantilevered upper levels
• Areas with dimensions less than 1 metre (such as narrow side setbacks)

A common planning mistake is including covered outdoor living areas in garden area calculations. A roofed alfresco area of 40 square metres cannot be counted, even if it’s open on three sides. However, the same area with an open pergola structure would qualify, provided the pergola has an open roof (timber beams rather than solid roofing).

Critical Exemptions for Developers

Several exemptions to the garden area requirement can significantly impact development feasibility. Understanding these exemptions is essential for site acquisition decisions and development planning.

Lots Under 400 Square Metres

The garden area requirement does not apply to lots less than 400 square metres in area, unless the lot was specifically created subject to the 25% garden area requirement through a subdivision approval after March 2017.

This exemption is particularly relevant in inner and middle-ring suburbs where smaller lot subdivisions occurred before the garden area requirement was introduced. If you’re developing a 380-square-metre lot in the City of Boroondara that was created before March 2017, you’re exempt from the garden area requirement entirely.

However, if a subdivision approval granted after March 2017 created a 380-square-metre lot with a 25% garden area requirement as a permit condition, any subsequent development must maintain that 95 square metres of garden area.

Medium Density Housing Sites

Lots designated as medium density housing sites in approved precinct structure plans, equivalent strategic plans, incorporated plans, or approved development plans are exempt from the garden area requirement.

This exemption recognises that master-planned areas have already addressed garden area outcomes through the strategic planning process. If you’re developing within a designated medium density precinct in Knox City Council’s growth areas, you can focus on meeting the specific requirements of the precinct structure plan rather than the standard garden area percentages.

Existing Non-Compliant Buildings

If an existing building did not comply with the minimum garden area requirement on 27 March 2017 (the approval date of Amendment VC110), applications to alter or extend that building are exempt from the garden area requirement.

This exemption prevents the requirement from unfairly limiting renovation and extension opportunities for existing dwellings that predate the control. However, it only applies to alterations and extensions—if you demolish the existing building and construct a new dwelling, the exemption no longer applies.

Council-Specific Exemptions

Schedules to the General Residential Zone can specify areas where the garden area requirement does not apply. This allows councils to exempt specific locations identified for higher density housing outcomes, typically areas close to activity centres, railway stations, or major employment nodes.

Before acquiring a development site, check whether the schedule to the GRZ in the applicable planning scheme includes any area-specific exemptions. These exemptions can significantly increase development yield on sites that would otherwise be constrained by the 30% or 35% garden area requirement.

Garden Area Requirements for Subdivisions

The garden area requirement operates differently for subdivision applications compared to development applications. Understanding these distinctions is critical for subdivision feasibility and lot layout planning.

When the Requirement Applies

For subdivisions, the garden area requirement applies when creating a vacant residential lot less than 400 square metres in area that is capable of being developed for a dwelling or residential building. The key term is “vacant lot”—a lot that does not have an existing dwelling or residential building.

If you’re subdividing a 1,000-square-metre lot in Manningham City Council into three lots (two at 350 square metres and one at 300 square metres), the 25% garden area requirement applies to the two 350-square-metre lots and the 300-square-metre lot. Each must demonstrate the capability to provide 87.5 square metres and 75 square metres of garden area respectively.

Demonstrating Garden Area Capability

For subdivision applications, you don’t need to show the actual garden area layout—you need to demonstrate that each new lot is capable of accommodating the required garden area when developed in the future.

This is typically shown through a “building envelope plan” that illustrates a compliant dwelling footprint, required setbacks, driveway, car parking, and the remaining area available as garden area. The plan demonstrates feasibility rather than committing to a specific design.

In practice, this means ensuring each new lot has sufficient dimensions to accommodate a dwelling that meets ResCode setback requirements whilst retaining 25% of the lot area for garden purposes. For a 350-square-metre lot, this means demonstrating that 87.5 square metres can remain as garden area after accounting for the dwelling footprint, driveway, and car parking.

Subdivision Following Development Approval

Where a planning permit has been issued for two or more dwellings on a lot, any subsequent subdivision of the land ahead of building construction does not need to be assessed against the garden area requirement for subdivision.

This provision recognises that the garden area requirement has already been satisfied through the development permit. If you obtain approval for a three-dwelling development on a 900-square-metre lot in the City of Whitehorse (requiring 270 square metres of garden area at 30%), you can subsequently subdivide the land into three lots without needing to demonstrate 25% garden area on each individual lot.

This approach—obtaining development approval before subdivision—can be strategically valuable for maximising yield on constrained sites where individual lot subdivision would be unviable due to the 25% requirement on small lots.

Garden Area Requirements for Multi-Unit Developments

For development applications proposing two or more dwellings on a lot, the garden area requirement applies to the lot as a whole, not to each individual dwelling. This distinction is fundamental to multi-unit development feasibility.

Lot-Based Calculation

If you’re developing four townhouses on a 600-square-metre lot in the City of Boroondara, you need to provide 180 square metres (30%) of garden area across the entire development. You do not need to provide 30% garden area for each individual townhouse, which would require 720 square metres of garden area on a 600-square-metre lot—an obvious impossibility.

This lot-based approach allows for efficient site planning where communal garden areas, shared courtyards, and individual private open spaces collectively meet the overall percentage requirement. The garden area can be distributed across the site in whatever configuration best suits the development design, provided the total area meets the minimum percentage.

Private Open Space vs Garden Area

It’s critical to understand that the garden area requirement is separate from and additional to the private open space requirements in ResCode (Clause 55.05-4). Each dwelling must still provide the required private open space (typically 80 square metres for a dwelling, with 40 square metres at ground level).

However, areas that qualify as private open space can also count towards the garden area requirement, provided they meet the garden area definition. A ground-level courtyard of 50 square metres serving a townhouse counts towards both the dwelling’s private open space requirement and the overall garden area calculation.

The key is ensuring your site planning satisfies both requirements simultaneously. On a 600-square-metre site with four townhouses, you might provide each dwelling with 50 square metres of ground-level private open space (200 square metres total), which also contributes to the 180-square-metre garden area requirement, leaving you to find only an additional 30 square metres through communal landscaping, pathways, or other qualifying areas.

Relationship with Site Coverage and Permeability

The garden area requirement operates independently from site coverage standards (Clause 55.05-6) and site permeability requirements (Clause 55.07). Understanding how these three controls interact is essential for efficient site planning.

Site Coverage

Site coverage limits the percentage of a lot that can be occupied by buildings. In the GRZ, the maximum site coverage is typically 60% for lots under 500 square metres and 50% for lots 500 square metres and over (though this varies by council through zone schedules).

Site coverage and garden area are related but distinct. A 600-square-metre lot with 50% maximum site coverage can have 300 square metres of building footprint. The remaining 300 square metres includes the required 180 square metres (30%) of garden area, plus 120 square metres for driveways, car parking, and other non-garden elements.

Importantly, site coverage only counts roofed building area. Unroofed terraces, pergolas, and pathways don’t contribute to site coverage but may or may not count towards garden area depending on their specific characteristics.

Site Permeability

Site permeability requirements (typically 20-40% depending on the council) mandate that a certain percentage of the lot must have a permeable surface to manage stormwater runoff. Permeable surfaces include garden beds, lawns, gravel, and permeable paving.

Garden area and site permeability are completely independent requirements. A permeable driveway using permeable pavers counts towards site permeability but cannot be included in garden area calculations (as driveways are explicitly excluded). Conversely, a swimming pool or solid-paved courtyard counts as garden area but reduces site permeability.

On a 650-square-metre lot in Maroondah City Council requiring 35% garden area (227.5 square metres) and 30% permeability (195 square metres), you need to carefully plan which areas serve which purpose. Lawn and garden beds (150 square metres) count towards both requirements. A paved courtyard (77.5 square metres) contributes to garden area but not permeability. Permeable paving in other areas (45 square metres) addresses the remaining permeability requirement.

Strategic Approaches for Constrained Sites

On sites where the garden area requirement significantly constrains development yield, several strategic approaches can help maximise feasibility whilst maintaining compliance.

Maximise Qualifying Elements

Design your site layout to maximise elements that count towards garden area. Use pergolas instead of solid roofs for outdoor entertaining areas. Ensure eaves don’t exceed 600mm width. Limit outbuildings to 10 square metres or less. Keep terraces and decks below 800mm height where possible.

On a 550-square-metre lot requiring 165 square metres (30%) of garden area, strategic use of pergolas (40 square metres), areas under 600mm eaves (20 square metres), and a 10-square-metre garden shed can contribute 70 square metres towards the requirement, reducing the amount of pure landscaped area needed to 95 square metres.

Optimise Building Footprint

Consider two-storey or three-storey building forms that reduce ground-floor footprint whilst maintaining dwelling size and yield. A two-storey townhouse with a 100-square-metre ground floor footprint provides the same internal area as a single-storey dwelling with a 200-square-metre footprint, freeing up 100 square metres for garden area, driveways, and parking.

This approach is particularly effective on lots in the 500-650 square metre range where the 30% requirement applies. Vertical development allows you to maintain dwelling sizes and unit numbers whilst meeting the garden area percentage.

Development-First Approach

For sites where individual lot subdivision would be constrained by the 25% requirement on small lots, consider obtaining development approval for multiple dwellings first, then subdividing. This approach applies the garden area requirement at the development stage (based on the original lot size) rather than the subdivision stage (based on individual small lots).

A 900-square-metre lot in Knox City Council could be subdivided into three 300-square-metre lots, each requiring 75 square metres (25%) of garden area—225 square metres total. Alternatively, obtaining development approval for three dwellings on the 900-square-metre lot requires only 270 square metres (30%) of garden area total, then subdividing after approval. The development-first approach requires 45 square metres less garden area, potentially allowing for larger dwelling footprints or additional car parking.

Site Selection Considerations

When acquiring development sites, factor the garden area requirement into feasibility analysis from the outset. Sites just above the 500-square-metre and 650-square-metre thresholds face higher garden area percentages (30% and 35% respectively) compared to sites just below these thresholds.

A 645-square-metre site requires 193.5 square metres (30%) of garden area. A 655-square-metre site requires 229.25 square metres (35%)—an additional 35.75 square metres despite only 10 square metres more land. This 35.75 square metres could represent the difference between a viable three-dwelling development and an unviable one.

Council-Specific Variations

While the garden area requirement is a state-wide control, councils can modify its application through schedules to the General Residential Zone. Understanding council-specific variations is essential for development planning across different municipalities.

Schedule Exemptions

Some councils have used Schedule provisions to exempt specific areas from the garden area requirement, typically locations identified for higher density housing outcomes in strategic planning documents. These exemptions are most common in areas within 400-800 metres of railway stations or major activity centres.

Before acquiring a site, review the schedule to the GRZ in the applicable planning scheme. If your site is within an exempted area, you can achieve higher development yields without the constraint of the 30% or 35% garden area requirement.

Precinct Structure Plans

In growth areas covered by precinct structure plans, the garden area requirement may not apply to lots designated as medium density housing sites. These designations are shown on precinct structure plan maps and typically apply to lots within walkable catchments of town centres or railway stations.

If you’re developing in growth areas of Knox City Council or Maroondah City Council, check whether the precinct structure plan designates your site as a medium density housing site. This designation exempts the site from standard garden area percentages, allowing development to respond to the specific requirements of the precinct structure plan instead.

Common Compliance Issues and Solutions

Based on 210+ projects delivered across Melbourne’s Eastern Suburbs, several common compliance issues repeatedly affect garden area calculations. Understanding these issues helps avoid costly redesigns during the planning permit process.

Basement Car Parks

Basement car parks that project above natural ground level cannot have the area above them counted as garden area. This is a frequent issue on sloping sites where basement car parking is used to maximise dwelling space.

The solution is ensuring basements don’t project more than 1.2 metres above natural ground level at any point. On sloping sites, this may require additional excavation or careful grading to keep the basement below the 1.2-metre threshold. Areas above compliant basements can then contribute to the garden area calculation.

Covered Outdoor Areas

Covered alfresco areas, verandahs, and porches cannot be included in garden area calculations, regardless of how “open” they feel. This catches many developers who assume a three-sided open alfresco area with a solid roof qualifies as garden area.

The solution is using pergolas with open roof structures (timber beams, battens, or louvres) instead of solid roofing. A pergola-covered outdoor area of 30 square metres counts towards garden area; the same area with a solid roof does not. This single design change can make the difference between compliance and refusal.

Narrow Side Setbacks

Areas with dimensions less than 1 metre cannot be counted as garden area. This excludes narrow side setbacks that might otherwise contribute to the calculation.

On constrained sites, consider whether slightly wider side setbacks (1 metre instead of 900mm) would allow these areas to count towards garden area. An additional 100mm on each side of a 20-metre-long dwelling adds 4 square metres to your garden area calculation—potentially valuable on tightly constrained sites.

Driveway Width

Driveways cannot be included in garden area calculations, and many developers underestimate how much site area driveways consume. A 3-metre-wide driveway extending 15 metres from the street to rear garages consumes 45 square metres—a significant portion of the garden area requirement on a 500-square-metre lot.

Consider whether narrower driveways (2.5 metres for single-width access) or shared driveways between dwellings can reduce the area lost to vehicle access. On a three-townhouse development, a shared driveway might consume 40 square metres compared to three individual driveways consuming 75 square metres—freeing up 35 square metres for garden area.

Documentation Requirements for Planning Permits

Planning permit applications must clearly demonstrate compliance with the garden area requirement through specific documentation. Inadequate documentation is a common cause of requests for further information and application delays.

Site Plan Requirements

Your site plan must clearly identify and dimension all areas contributing to the garden area calculation. This includes:

• Total lot area and required garden area percentage
• Building footprints with eave widths noted
• Driveways and car parking areas
• Pergolas and open structures
• Outbuildings with gross floor areas noted
• Paved areas, pathways, and courtyards
• Lawn and garden bed areas
• Swimming pools or other recreational areas
• Areas under balconies or cantilevered upper levels (excluded)

Include a garden area calculation table showing each qualifying element, its area, and the total garden area provided as both square metres and percentage of lot area. For a 600-square-metre lot: “Garden area provided: 185 sqm (30.8%) – Requirement: 180 sqm (30%) – Complies.”

Cross-Sections

For sites with basement car parking or significant slope, provide cross-sections showing the relationship between natural ground level and basement projection. Clearly dimension the maximum height the basement projects above natural ground level to demonstrate compliance with the 1.2-metre threshold for areas above basements to count as garden area.

Subdivision Plans

For subdivision applications creating lots less than 400 square metres, provide building envelope plans for each new lot demonstrating garden area capability. Show a compliant dwelling footprint, required setbacks, driveway, car parking, and the remaining area available as garden area, with calculations confirming 25% capability.

Frequently Asked Questions

Does the garden area requirement apply to lots in the Mixed Use Zone or Commercial Zone?

No. The garden area requirement only applies to land in the Neighbourhood Residential Zone and General Residential Zone. Residential development in the Mixed Use Zone, Commercial 1 Zone, or other zones is not subject to the garden area requirement, though other zone-specific requirements may apply.

Can I include a tennis court or swimming pool in the garden area calculation?

Yes. Tennis courts and swimming pools are explicitly included in the garden area definition and can count towards the required percentage. A 40-square-metre swimming pool on a 600-square-metre lot contributes to the 180-square-metre (30%) garden area requirement.

If my lot is 399 square metres, am I exempt from the garden area requirement?

Generally yes, provided the lot was not created after March 2017 with a specific 25% garden area requirement as a subdivision condition. Lots under 400 square metres are exempt unless they were specifically encumbered with the requirement through a post-2017 subdivision approval.

Does the garden area requirement apply to renovations of existing dwellings?

It depends. If the existing dwelling did not comply with the garden area requirement on 27 March 2017, alterations and extensions are exempt. However, if you demolish the existing dwelling and construct a new dwelling, the exemption no longer applies and the new dwelling must meet the requirement.

Can I use artificial turf or synthetic grass in the garden area calculation?

Yes. The garden area definition does not specify that landscaping must be natural. Artificial turf can be included in garden area calculations, though it would not contribute to site permeability requirements (which are a separate control).

How does the garden area requirement apply to dual occupancy developments?

For two dwellings on a single lot, the garden area requirement applies to the lot as a whole based on the total lot size. A 600-square-metre lot with two dwellings requires 180 square metres (30%) of garden area total, not 30% for each dwelling. If you subsequently subdivide the lot, the subdivision application is exempt from the garden area requirement as it has already been satisfied through the development permit. For more details, see our dual occupancy guide.

Can councils require more than the standard garden area percentages?

No. The garden area percentages (25%, 30%, 35%) are mandatory state-wide requirements that councils cannot increase. However, councils can exempt specific areas from the requirement through schedules to the General Residential Zone, and they can apply additional landscaping requirements through other planning scheme provisions such as Design and Development Overlays.

Conclusion

Victoria’s minimum garden area requirement represents a fundamental shift in residential development controls, prioritising retention of landscaped open space across Melbourne’s established suburbs. For property developers, understanding the requirement’s operation, exemptions, and calculation methodology is essential for site acquisition decisions, feasibility analysis, and development planning.

The requirement’s mandatory nature means compliance cannot be negotiated—your planning permit will be refused if the garden area percentage is not met. However, strategic site planning, careful selection of building elements, and understanding of available exemptions can help maximise development yield whilst maintaining compliance. With 98% of our planning applications approved across 210+ projects, proper application of the garden area requirement is achievable with appropriate professional guidance.

Book a Strategy Call: Contact SQM Architects on (03) 9005 6588 for a complimentary assessment of your site’s garden area compliance and development potential. Our team has delivered $120M+ in combined GDV across Melbourne’s Eastern Suburbs with specialist expertise in maximising yield whilst meeting mandatory planning requirements.

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This article provides general information about Victorian planning for property developers. It does not constitute professional advice. For specific guidance on your project, contact SQM Architects (ARBV Reg. No. 51498) for a complimentary site assessment.