Secondary Dwelling Council Requirements

(Noosa, Gympie & Sunshine Coast)

Before starting your project, it’s important to understand that requirements vary depending on your council, zoning, and site conditions.

Below is a general guide to help you determine if your property may be suitable.

📍 Noosa Council
Max Size
Up to 80m² total floor area


Zoning
Low Density Residential (most common)
May require further assessment depending on overlays


Setbacks (Very Important)
Side boundary: 1.5m – 2.0m+
Rear boundary: 1.5m – 2.0m+

👉 This means your secondary dwelling must sit at least 1.5m away from your side and rear fences


👉 Example:
If your block is 20m wide, you may lose:
1.5m on the left
1.5m on the right
= 3m total, leaving 17m buildable width



⚠️ In Noosa, setbacks can increase depending on:

1. Building height
2. Overlays (bushfire, environmental, etc.)
👉 So you may lose more usable space than expected


Key Requirements
Strong focus on design & character
May require bushfire, flood or environmental reports
Short-term accommodation restrictions may apply


📍 Gympie Council
Max Size
Up to 80m² total floor area


Zoning
Low Density Residential
Rural Residential


Setbacks (Very Important)
Side boundary: 1.5m – 2.0m
Rear boundary: 1.5m – 2.0m

👉 This means your secondary dwelling must sit at least 1.5m away from your side and rear fences

👉 Example:
If your block is 20m wide, you may lose:
1.5m on the left
1.5m on the right
= 3m total, leaving 17m buildable width


⚠️ Ask yourself: Do I still have enough space once setbacks are applied?


Key Requirements
Must remain secondary to the main dwelling
One additional car space usually required
Septic required for unsewered sites


📍 Sunshine Coast Council
Max Size
Up to 90m² total floor area


Zoning
Low Density Residential
Rural Residential


Setbacks (Very Important)
Side boundary: 1.5m minimum
Rear boundary: 1.5m minimum

👉 This means your secondary dwelling must sit at least 1.5m away from your side and rear fences

👉 Example:
If your block is 20m wide, you may lose:
1.5m on the left
1.5m on the right
= 3m total, leaving 17m buildable width


⚠️ Ask yourself: Do I still have enough space once setbacks are applied?


Key Requirements
Must be on same title as main dwelling
1 additional car space typically required
Overlays may apply (flood, bushfire, landslip)


⚠️ Important Things Most People Miss

1. Setbacks reduce how much space you actually have to build

2. Larger homes or narrow blocks can make secondary dwellings difficult

3. Decks and roofed outdoor areas may count toward total size

4. Unsewered blocks require additional approvals and space