Do You Need a Permit for a Portable Building in NSW? (2025 Update)

A portable buildingis a transportable structure that’s typically delivered fully assembled or as a modular unit. Common types include:

• Site offices

• Granny flats

• Portable bathrooms

• Storage sheds

• Class 1a relocatable homes

They can be installed temporarily or semi-permanently on both residential and commercial land.

The short answer: not always — but in many cases, yes.

In NSW, whether you need a permit or development approval (DA) depends on:

• The size and intended use of the structure

• Whether it’s temporary or permanent

• Your local council’s zoning rules

• If it’s connected to services (like water or electricity)

• Bushfire, flood, or heritage overlays on the land Explore the Range of Portable Buildings

Under NSW Planning’s Exempt Development Code, small, low-impact portable buildings may not require a permit if they meet strict conditions:

General Rules for Exempt Portable Buildings:

• Maximum height: 3m (or 3.5m if pitched roof)

• Max floor area: 20m²

• Located behind the building line (not in the front yard)

• Not connected to sewer, water, or power

• Setbacks: typically 1m–3m from boundaries

• Not used as a dwelling or living quarters

These are general guidelines. Always check with your local council or a planning consultant before assuming exemption applies.

You’ll likely need approval if:

• The structure is larger than 20m²

• It’s used for living (e.g. granny flat, home office)

• It connects to utilities

• It stays in place for more than 60 days on a vacant block

• You’re in a fire, flood, or environmental zone

In these cases, you may need either:

• Development Application (DA)

• Complying Development Certificate (CDC) — a fast-tracked option

Tip: If you’re buying a mine-spec site office or Class 1a portable home, plan ahead and talk to a private certifier for a faster path.

When reviewing portable building applications, most councils assess:

• Zoning compliance

• Fire safety (especially for buildings near bushland)

• Structural integrity and engineering

• Visual impact and neighbor amenity

• Access and parking if used commercially

    *Always check your local council’s LEP (Local Environment Plan) or speak to us for guidance.

Portable site offices, lunchrooms, or bathrooms on construction sites often fall under temporary structures.

These typically:

• Must be removed after the project ends

• Must comply with SafeWork NSW standards

• May not need DA if part of a valid building site setup

Check with your builder or project manager to confirm.

At SCS Australia, we supply portable buildings, site offices, bathrooms, and more — and we’re across the compliance requirements across all major NSW councils.

We can:

• Advise you on whether a permit is needed

• Supply spec sheets for council submission

• Connect you with certifiers for CDC/DA approvals

Don’t risk costly mistakes or delays. Reach out to the SCS Australia team and we’ll guide you through the approval process — from choosing the right unit to understanding the legal side.

Contact us for a free consultation.

Key Takeaways

• You may not need a permit if the structure is small and non-habitable

• You will need approval if it’s for living, larger than 20m², or connected to services

• Always check your local council — rules vary

• SCS can help you choose the right structure and stay compliant

Related Links:

• NSW Planning Portal – Exempt and Complying Development

• SCS Australia Portable Buildings

We’ve got you covered — from basic office setups to premium granny flats. Call our Newcastle team today or browse our range online. Then maybe a link back to our “portable buildings NSW” location page ??