Understanding Estimated Development Cost in NSW: A Comprehensive Guide
- Sydney Estimator

- Jun 14, 2024
- 6 min read
Updated: Oct 31
Estimated Development Cost (EDC) is a key component in the planning and approval processes of construction projects in New South Wales (NSW). Accurately estimating development costs ensures compliance with regulatory requirements and helps stakeholders plan effectively for financial and resource allocation. In this guide, we delve into the intricacies of EDC, covering its calculation, significance, and impact on development projects.
What is the Estimated Development Cost?
Estimated Development Cost refers to the projected financial expenditure required to complete a development project. This includes all costs associated with land acquisition, design, construction, project management, and any other relevant expenses. Understanding these costs is crucial for developers, investors, and regulatory bodies to ensure the feasibility and sustainability of development projects.
Components of Estimated Development Cost

Land Acquisition Costs
Land acquisition is often the first and one of the most significant expenses in a development project. This includes:
Purchase price of the land
Legal fees and stamp duty
Site preparation and demolition costs
Design and Consultancy Fees
Professional services form a vital part of the development process. These include:
Architectural design fees
Engineering consultancy fees
Planning and environmental assessment fees
Construction Costs
Construction costs encompass all expenses related to the actual building of the project, including:
Materials and labor
Equipment and machinery
Site infrastructure (e.g., roads, utilities)
Project Management Costs
Effective project management ensures that the development stays on schedule and within budget. These costs include:
Project manager salaries
Administrative expenses
Contingency funds for unforeseen issues
Approval and Compliance Costs
Navigating the regulatory landscape requires compliance with various local and state requirements:
Development application fees
Environmental impact assessments
Building permits and certifications
Common Mistakes in Estimating Development Costs
Many first-time developers make mistakes when estimating costs. Here are some of the most common errors and how to avoid them:

Underestimating DA and Approval Fees: Development approval costs can add up, especially if you need special permits or environmental studies. Always check with your council for all potential fees.
Not Including a Contingency Fund: Unexpected problems can arise during development, so it’s essential to have extra money set aside for surprises like weather delays or material shortages.
Forgetting Holding Costs: Holding costs, such as loan interest, property taxes, and insurance, can add up while you wait for the project to be completed. Don’t forget to factor these into your budget.
Importance of Accurate Estimated Development Cost
Financial Planning and Budgeting
Accurate EDC allows for precise financial planning, ensuring that developers can secure adequate funding and manage cash flow effectively throughout the project lifecycle.
Risk Management
Identifying potential costs early helps in mitigating risks by allowing for contingency planning and proactive problem-solving.
Regulatory Compliance
Accurate cost estimates are often required for regulatory approvals, ensuring that the project meets all local and state requirements.
Investor Confidence
Detailed and accurate EDC reports can boost investor confidence by demonstrating the feasibility and potential profitability of the development project.
How Much Does DA Approval Cost in NSW?
If you’re building or making major changes to a property in Sydney, you’ll need to submit a Development Application (DA) to your local council for approval. The cost for DA approval can depend on the project size and where it’s located.
For small projects, DA fees might be around $500 to $3,000.
Larger projects can cost between $5,000 to $10,000 or more.
The cost also varies based on the area of Sydney. For example, central areas like the CBD might have higher fees than outer suburbs.
Timeline of a Typical Development Project in NSW
Here’s what a typical property development timeline looks like in NSW. Knowing these stages can help you plan your project more effectively:
Land Acquisition (1–3 months): This phase includes finding and purchasing the land. Depending on the market, it could take anywhere from a few weeks to a few months.
Development Application (DA) and Approval (3–6 months): After you’ve purchased the land, you’ll need to submit a DA to your local council. This process can take a few months, depending on the project’s complexity and the council’s workload.
Construction (6–12 months): Once you have approval, construction can take anywhere from 6 months to a year, depending on the size of the project. Larger developments take longer.
Completion and Sale/Leasing (3–6 months): After construction, you may need a few more months to finish the interiors and get the necessary inspections. Selling or leasing the property can take additional time, depending on the market.
How to Estimate Development Costs for First-Time Developers
To avoid unexpected costs, using a development cost calculator can be a big help. This tool lets you input details like the size of your project and the location to get a breakdown of likely costs.
A good calculator will show:
Land costs
Construction costs
Planning and approval fees
Financing Costs:
Use Development Cost Calculators
Additional costs like infrastructure
It’s a great tool for planning and helps you get a clear picture of your project’s finances before you start.
How to Reduce Property Development Costs in NSW
While you can't avoid all costs, there are ways to save money during the development process:
Negotiate Land Prices: If you’re buying a larger plot, you might be able to get a better price by negotiating with the seller.
Choose Cheaper Materials: Consider using cost-effective materials that still meet quality and safety standards.
Speed Up the Approval Process: Make sure your DA application is complete and meets all the council’s requirements to avoid delays.
Look Outside Expensive Areas: If you’re flexible, you could save money by developing in areas outside the city center, where land is cheaper.
Impact of Estimated Development Cost on Project Outcomes
Project Feasibility
A thorough understanding of EDC can determine whether a project is financially viable, influencing the decision to proceed with or alter the development plans.
Scheduling and Timeline
Accurate cost estimates enable realistic scheduling, helping to set achievable milestones and completion dates.
Quality of Construction
Adequate budgeting for high-quality materials and skilled labour ensures that the finished project meets the desired standards and specifications.
How to Create an Estimated Development Cost Report
An Estimated Development Cost (EDC) Report must be addressed to the consent authority and include:
Executive summary
Description of the basis of preparation
Description of the scope of the EDC calculation
Detailed calculation schedule supporting the EDC
Executive Summary
The executive summary should include:
A title indicating it is an objective calculation of the EDC for the identified development proposal
A summary of the EDC value, based on PS-24-002 guidelines
A statement certifying the calculation’s accuracy, covering the full scope of works at the date of submission
Date of Report
The report should be dated 30 days before the Development Application (DA) submission.
Preparation by a Qualified Surveyor
The report should be prepared by a qualified quantity surveyor who is a member of a relevant professional body (e.g., AIQS, RICS).
Basis of Preparation
Required Statements
The report must include:
A statement that it is prepared for the consent authority
Compliance with legislative and regulatory requirements, the AIQS practice standard, and other relevant guidelines
A list of development proposal documents used in the calculation and their dates
Any limitations in the report’s preparation, including unavailable information or uncertainties not incorporated
The qualifications of the quantity surveyor
Identification of any factors impairing the objectivity of the calculation
Scope of the Calculation of EDC
Proposal and Proponent Identification
The report must state:
The development proposal and proponent, including the beneficial owner(s), if the proponent is a subsidiary entity
A description of all component activities and stages of the development proposal
Detailed Calculation Schedule
Detailed Support
The detailed calculation schedule should provide the following:
The cost of each component
The basis and assumptions for each cost (e.g., elemental quantities, rates, site conditions)
Guidance and documents underpinning the calculations
The extent of uncertainty in the calculations and provisions for uncertainty
Final Thoughts: Planning for a Successful Development Project
Understanding and accurately estimating development costs is essential for the successful planning, execution, and completion of construction projects in NSW. Developers can ensure financial feasibility, regulatory compliance, and overall project success by thoroughly analyzing all cost components and employing detailed estimation methods.
With the right tools, like a cost calculator, and by following best practices to reduce costs, you can ensure your development project stays within budget and on schedule. If you want to hire a project estimator who helps with successful development projects, then Sydney Estimator is here.







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