Exempt vs Complying Development vs DA in NSW

Exempt development in NSW needs no council approval at all, complying development is approved through a fast-track certificate instead of a full application, and everything else needs a Development Application, or DA. Which of these three pathways your project falls into decides how long approval takes, what it costs, and whether you need a Statement of Environmental Effects.

Get this wrong and the cost is real. Treat work as exempt when it is not, and your council can order it to stop or be demolished. Lodge a full DA for something that qualified as exempt all along, and you spend weeks and hundreds of dollars on an approval you never needed.

In this guide, you will learn:

• What exempt development is and how to confirm your project qualifies
• How a Complying Development Certificate differs from a full DA
• Why only the DA pathway requires a Statement of Environmental Effects
• The three-step check to find your correct approval pathway
• What happens if you choose the wrong pathway and build without consent

What Is Exempt Development in NSW?

Exempt development is low-impact work you can carry out with no planning or building approval at all — provided it meets every standard set for it in the Codes SEPP.

Exempt development is low-impact work you can carry out with no planning or building approval at all, as long as it meets every standard set for it. The standards sit in the State Environmental Planning Policy (Exempt and Complying Development Codes) 2008, usually called the Codes SEPP or the exempt development SEPP. If your project is listed there and ticks every box, you can simply build it.

Figure 1: Common exempt works in NSW. Miss a single standard and the work is no longer exempt.

Typical examples include a garden shed up to 20 square metres in floor area and 3 metres high, small decks and pergolas within set limits, fences, carports, and minor internal alterations such as repainting. The catch is the word every. Exempt status is all-or-nothing: if your project breaches even one standard, such as a shed that is 22 square metres rather than the 20 square metre limit, it stops being exempt development and needs approval through one of the other two pathways. Exact standards also vary by zone and by site constraints like heritage, flood or bushfire, so a project that is exempt on one block may not be on the next.

What Is Complying Development and How Does a CDC Work?

Complying development is more substantial work that still gets approval through a fast-track Complying Development Certificate rather than a full DA — the trade-off is speed in exchange for rigid, non-negotiable standards.

Complying development is more substantial work, such as a new single dwelling, a major renovation or a granny flat, that still needs approval but can get it through a Complying Development Certificate, or CDC, rather than a DA. A CDC is a combined planning and construction approval issued by your council or by a private accredited certifier. It rolls the planning tick and the building tick into one certificate.

Because complying development is checked against a fixed set of standards rather than assessed on its merits, a CDC is fast. A complying development application can be determined in as little as 20 days, compared with the months a DA can take. The standards come from codes inside the Codes SEPP, such as the General Housing Code for new dwellings and additions and the Low Rise Housing Diversity Code for dual occupancies and terraces. The trade-off for that speed is rigidity: your plans must meet every numerical control, with no room to argue a variation. If your site or design falls outside the code, the CDC pathway closes and you move to a DA. This is the heart of the CDC versus DA decision in NSW.

Exempt Development vs Complying Development vs DA

Side by side, the three pathways differ on four things that matter: whether you need approval, who decides, how fast it is, and whether a SEE is required.

Side by side, the three pathways differ on four things that matter to you: whether you need approval, who decides, how fast it is, and whether a SEE is required. Exempt development needs no approval and no SEE. Complying development needs a CDC but still no SEE. Only a DA needs a Statement of Environmental Effects.

Figure 2: How the three NSW pathways compare on approval, who assesses it, speed, and whether a SEE is required.

The reason only the DA pathway needs a SEE comes down to how each is assessed. Exempt and complying development are measured against fixed, published standards, so the answer is yes or no with nothing to weigh up. A DA, by contrast, is assessed on merit, which means the council must actually consider the likely impacts of your proposal. The Statement of Environmental Effects is the document that sets those impacts out. As a rough guide, a shed or fence is often exempt, a straightforward new dwelling is often complying development, and a bigger, heritage-affected or non-standard build usually needs a DA.

When Do You Need a DA (and a Statement of Environmental Effects)?

You need a DA when your project is permitted with consent in your zone and does not qualify as exempt or complying development — the DA is the only pathway that requires a SEE.

You need a DA when your project is permitted with consent in your zone and does not qualify as exempt or complying development. This is the most common pathway for additions, secondary dwellings and anything that steps outside the codes. A DA is lodged with your council and assessed on its merits before consent is granted.

Figure 3: Work through the pathways in order. Only a DA needs a SEE.

The DA is the only pathway that requires a Statement of Environmental Effects. Under Schedule 1, Part 1 of the Environmental Planning and Assessment Regulation 2021, a development application must be accompanied by a SEE that explains the environmental, social and economic effects of the proposal. The council then assesses your application against the matters in section 4.15(1) of the Environmental Planning and Assessment Act 1979, which include the likely impacts of the development and whether it is in the public interest. This means the SEE is not optional paperwork: it is the document the council reads to decide your DA. Our guide on how to lodge a DA in NSW walks through the steps once you know a DA is your pathway.

How to Check Which Pathway Your Project Needs

The reliable way to find your pathway is to check three things in order — each step narrows the answer, and together they confirm exactly where your project sits.

The reliable way to find your pathway is to check three things in order, rather than guess from what a neighbour built. Each step narrows the answer, and together they confirm exactly where your project sits.

Figure 4: Check your 10.7 certificate, then your LEP land use table, then the Codes SEPP, in that order.

First, get your property's 10.7 planning certificate, which shows your zone and the controls that apply, including notes on exempt and complying development. Second, check your council's Local Environmental Plan land use table to see whether your project is permitted without consent, permitted with consent, or prohibited in your zone. Third, check the Codes SEPP to see whether the specific work can be done as exempt or complying development. If you land on the consent pathway, our free DA Lodgement Checklist for NSW lists every document you will need, and our guide on whether you need development consent covers the same decision from the consent angle.

• Is the work listed as exempt in the Codes SEPP and does it meet every standard?
• If not exempt, does it qualify as complying development under a Codes SEPP code?
• If neither — and the use is permitted with consent in your LEP — you need a DA and a SEE

What Happens If You Choose the Wrong Pathway

Choosing the wrong pathway is not a paperwork error you can quietly fix — building without the required consent is unlawful, and a single neighbour complaint can trigger your council's enforcement powers.

Choosing the wrong pathway is not a paperwork error you can quietly fix. Building work that needed consent but never got it is unlawful, and your council has enforcement powers under the EP&A Act that a single neighbour complaint can trigger.

Figure 5: Confirm your pathway first and your work is lawful. Build without it and you risk orders, fines and a retrospective DA.

If you treat work as exempt or complying when it actually needed a DA, the council can issue an order to stop or demolish it, and financial penalties can apply. You may then have to lodge a retrospective DA or a building information certificate to try to regularise the work after the fact, which is harder and less certain than getting consent first, because the structure already exists and may not comply. Unapproved work also follows you: it can stall a sale when a buyer's conveyancer finds no consent on the title, and it can complicate insurance. Confirming your pathway before you start is far cheaper than fixing an enforcement problem later.