Rural lots

Granny flats on rural lots in WA

Short answer

On rural, rural residential and farming land, the 2024 granny flat exemption often doesn't apply. Most shires still need a development application, plus a building permit, and usually bushfire and wastewater approvals too.

Last updated 29 October 2026

Why rural lots are different

The 2024 planning exemption for granny flats is built around the R-Codes, which apply to residential zones. Rural, rural residential and farming zones are controlled by each shire's local planning scheme instead, and many of them still require a development application for a second dwelling.

What shires usually look at

  • Size. Some shires allow larger ancillary dwellings on big rural lots, others keep a 70 m² limit.
  • Location. Often it has to be close to the main house, sharing the driveway.
  • Bushfire. Most rural land is bushfire-prone, so a BAL assessment and bushfire management measures are needed.
  • Water and waste. Without scheme water or sewer, you need rainwater storage and an approved on-site wastewater system.
  • Access for emergency vehicles.

Our approach

We start with your shire's local planning scheme and policies, then prepare the development application with the supporting reports, followed by the building permit and the wastewater application if you need one.

Questions

Common questions

Can I put a tiny home on wheels on my rural lot instead?

Possibly. In WA a tiny home on wheels is treated as a caravan, and your shire can approve it on private land for up to 24 months at a time. See our sister site Tiny Home Permit.

Do I need a separate septic approval?

If the granny flat isn't connected to sewer, its wastewater system needs approval, usually from the shire's health service. We can include that in your application.

A granny flat is a big project. The paperwork shouldn't be.

We check the 70 m² rules, line up the drawings and engineering, and lodge with your council. You get one point of contact from start to permit.

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