How to Assess Development Potential in NSW

Whether you're considering a renovation, thinking about adding a granny flat, exploring subdivision, or planning a full development, the first step is always the same: understand what the planning rules actually allow on your land.

This guide walks you through the process used by property professionals to assess development potential in NSW. No jargon, no fluff – just the practical steps to figure out what you can build.

Step 1: Understand Your Zoning

Every property in NSW is assigned a zone that determines what types of development are permitted. The zone is set by your council's Local Environmental Plan (LEP).

Common residential zones:

• R2 Low Density Residential – Houses, attached dual occupancies (duplexes), secondary dwellings (granny flats). Most suburban land falls in this zone.
• R3 Medium Density Residential – All of the above plus multi-dwelling housing (townhouses), manor houses, and sometimes apartments.
• R4 High Density Residential – Residential flat buildings (apartments) and all lower-density housing types.

The zone tells you what's permitted with consent, what's prohibited, and what (if anything) you can do without consent.

Step 2: Check Development Standards

Even if something is permitted in your zone, you still need to fit within the development standards. The key ones are:

Floor Space Ratio (FSR)

FSR controls how much floor area you can build relative to your land size. It's expressed as a ratio like 0.5:1.

Example: A 600sqm block with 0.5:1 FSR allows up to 300sqm of floor area (600 × 0.5 = 300). That floor area can be spread across multiple levels.

Height Limit

Maximum building height in metres, measured from ground level to the highest point. A 9m height limit typically allows 2-3 storeys, depending on floor-to-ceiling heights and roof design.

Minimum Lot Size

Some development types require a minimum lot size. For example, dual occupancies often need 400-600sqm depending on the council. Subdivision requires each resulting lot to meet the minimum.

Setbacks and Site Coverage

The Development Control Plan (DCP) specifies minimum distances from boundaries (setbacks) and maximum building footprint as a percentage of the site (site coverage).

Step 3: Review Your Title for Constraints

Planning controls only tell part of the story. Your property's title may contain restrictions that affect what you can build.

Key documents to check:

• Certificate of Title – Shows ownership and any encumbrances (mortgages, caveats, etc.)
• Deposited Plan (DP) – Survey showing lot boundaries, dimensions, and easements
• 88B Instrument – Details of any easements or covenants affecting the land

Common constraints:

• Drainage easements – You can't build over them
• Right of carriageway – Must maintain access for neighbours
• Restrictive covenants – May limit building types, materials, or number of dwellings
• Party walls – Shared walls on boundaries (can be an opportunity for semi-detached development)

Step 4: Get the Planning Certificate

A Section 10.7 Planning Certificate is the official statement from council of all planning matters affecting your property.

Two types:

• Section 10.7(2) – Standard certificate covering zoning, heritage, FSR, height limits, and other prescribed matters (~$50-80)
• Section 10.7(5) – Everything in 10.7(2) plus additional information council holds, like flood studies, contamination, and road widening proposals (~$150-250)

For serious development assessment, get the 10.7(5). The extra information can reveal critical constraints that aren't in the standard certificate.

Step 5: Determine Your Approval Pathway

Once you know what you want to build and confirm it's permissible, you need to understand how to get it approved.

Exempt Development

Minor works that don't need any approval – things like small garden sheds, fences under certain heights, and minor repairs. Check the Exempt and Complying Development Codes SEPP for details.

Complying Development Certificate (CDC)

A fast-track approval for development that meets all predetermined standards exactly. Issued by council or a private certifier in 10-20 days. No neighbour notification required before approval.

You can't use CDC if:

• Property is heritage listed or in a Heritage Conservation Area
• Land is significantly flood affected
• Land is bushfire prone (depending on category)
• Development doesn't meet every single standard

Development Application (DA)

A formal application to council for merit-based assessment. Takes 40-90+ days. Required when CDC isn't available or when you need to vary development standards.

Step 6: Calculate Feasibility

Understanding what you can build is different from understanding what you should build. A feasibility assessment weighs potential value against costs and risks.

Key numbers to estimate:

• Gross Realisation – What the completed development would sell for
• Construction Costs – Building costs per square metre (varies by quality and complexity)
• Professional Fees – Architect, engineer, surveyor, town planner (typically 8-12% of construction)
• Council Contributions – Section 7.11/7.12 contributions
• Finance Costs – Interest during the development period
• Contingency – Buffer for unknowns (typically 10-15%)

The feasibility calculation tells you whether development makes financial sense and helps you decide how far to push the design envelope.

Next Steps

The process above gives you a framework for assessing any property in NSW. For a quick assessment of your specific property, try Property Jeanie's free search – it pulls together zoning, FSR, height limits, and constraints in one place.

For complex projects, consider engaging:

• Town planner – For DA strategy and council negotiations
• Architect or building designer – For design that maximises potential within constraints
• Surveyor – For accurate site dimensions and boundary confirmation