Enquire Now

Fixed price, $4,990

Granny Flat Plans

Council ready drawings for granny flats and secondary dwellings on standard residential lots across Brisbane and South East Queensland, a complete, self contained second home on your block.

About this service

Everything you need to get a secondary dwelling approved.

A granny flat, known in the planning system as a secondary dwelling, is a self contained second home on the same lot as your main house, with its own kitchen, bathroom and living space. It's one of the most cost effective ways to add rental income, house family, or get more from your land. Plan Draft's fixed price service covers the complete set of drawings your council, certifier and builder need.

Since September 2022, a secondary dwelling in Queensland can be rented to anyone, it no longer has to be lived in by a member of the household. Each council sets its own rules for size, setbacks and site coverage, so we confirm exactly what applies to your block at suitability review before any work begins.

Typical turnaround is 15–20 business days from receipt of all required site information. A secondary dwelling is a full habitable building, so it involves more documentation than a carport or deck, which is reflected in the fixed price. Once finalised, you receive a digital set suitable for lodgement with your building certifier or council.

Fixed price

$4,990

One price for a standard secondary dwelling on a standard residential lot.

Typical turnaround

15–20 business days

Enquire About Granny Flat Plans

No commitment required to enquire

Scope of service

What's included, and what's not.

The fixed price covers the full set of drawings required for a standard secondary dwelling approval application. The following clarifies what sits inside and outside the fixed price scope.

Included in the fixed price

  • Site plan showing existing dwelling and proposed secondary dwelling
  • Proposed floor plan with dimensions
  • All required elevations
  • Roof plan
  • Cross section through the dwelling
  • Lighting and electrical layout
  • Construction notes
  • Engineer and certifier coordination
  • Two rounds of drawing revisions
  • Final digital issue (PDF) and DWG files

Not included in the fixed price

  • Council application and development application fees
  • Structural engineering
  • Private certification fees
  • Site, boundary and location surveys
  • Council fees and charges
  • Soil testing
  • Hydraulics, stormwater or drainage design
  • Any other applicable consultants' fees
  • Revisions beyond the included rounds
Granny flat FAQs

Common questions about granny flat plans.

Do I need council approval for a granny flat in Queensland?
A secondary dwelling (granny flat) always needs a building approval. In many cases it can be approved as accepted development without a full development application, provided it meets your council's planning scheme for size, setbacks and site coverage. Where the proposal exceeds those limits, a development application is required. We confirm the pathway for your block at suitability review.
Can I rent out a granny flat in Queensland?
Yes. Since September 2022 a secondary dwelling in Queensland can be rented to anyone, it no longer has to be occupied by a member of the main household. Individual councils may still apply their own design and approval requirements, which we check for your site.
How big can a granny flat be?
Size limits vary by council. In Brisbane, a secondary dwelling is generally limited to 80m² of habitable floor area as accepted development, and must sit within 20 metres of the main dwelling with overall site coverage no more than 50%. Other SEQ councils set their own caps, some tie the limit to lot size. We confirm the limits that apply to your block before starting.
What's included in the $4,990 fixed price?
The fixed price covers the full drawing set: a site plan showing the existing and proposed dwellings, a proposed floor plan, all elevations, a roof plan, a cross section, and specification notes, plus engineer and certifier coordination, one revision round, and the final PDF issue for approval. The price applies to a standard secondary dwelling on a standard residential lot.
What's not included?
Council and development application fees, structural engineering, private certification fees, site survey, soil testing, hydraulic or stormwater design, and revisions beyond the included round are not included. These are quoted or paid separately as required, and we'll flag anything likely to apply to your project up front.
How long does it take?
Typical turnaround is 15–20 business days from receipt of all required site information. A secondary dwelling is a full habitable building, so it involves more documentation than a carport or deck. After drawings are finalised, your certifier assesses the package and issues the building approval.
Ready to proceed?

Start your granny flat enquiry.

Send us your project details and we'll confirm suitability within one business day. Fixed price, $4,990, no surprises.

Enquire About Granny Flat Plans

Related services

Room Extension Plans, from $3,490 Elevated Deck Plans, $2,990 Carport Plans, $2,490 View all pricing
Fixed prices from $2,490 Enquire Now