Granny flat cost calculator

How much does a
granny flat cost
in Australia?

Pick a design, choose supply-only or full turnkey build — see an indicative price instantly. No form. No waiting.

See prices ↓ View all designs →
7
Ready-to-build designs
21–84m²
Size range
Studio – 3 bed
Configurations
1 day
Quote turnaround
Step 1

Choose your design

Kedron studio granny flat
Studio · 21.3m²
Kedron
Hamilton 2 bedroom granny flat
2 Bed · 22.4m²
Hamilton
Coolum studio granny flat
Studio · 34.5m²
Coolum
Newstead 1 bedroom granny flat
1 Bed · 39m²
Newstead
Noosa 1 bedroom granny flat
1 Bed · 53.1m²
Noosa
Beechmont 2 bedroom 2 bathroom granny flat
2 Bed 2 Bath · 78m²
Beechmont
Tallai 3 bedroom 2 bathroom granny flat
3 Bed 2 Bath · 83.7m²
Tallai

Don't see what you're after? Custom design — tell us what you have in mind →

Step 2

What do you need?

Indicative estimate. Major east coast city delivery included. Regional and interstate delivery surcharges may apply — we'll confirm in your quote.

One more step

Where should we send the breakdown?

Takes 20 seconds — we'll tailor the follow-up to your state and timeline.

Your cost breakdown

All figures indicative. Regional and interstate delivery surcharges may apply. Supply + Install pricing assumes standard site conditions: class M soil, existing concrete slab, existing services connected to boundary. Site variations will be assessed and confirmed in your fixed-price quote.

Expect a call shortly.

One of the team will call you within one business day to talk through your project and confirm a fixed price — agreed before any work starts.

What's included

What the price covers

Supply (all options)

  • External wall panels — insulated SIP system
  • Windows and external doors
  • Roof panel system
  • Floor system
  • Structural engineering certification
  • Standard delivery — major east coast cities

Supply + Install adds

  • Licensed builder — your state
  • Panel erection and weatherproofing
  • Internal fit-out to lock-up stage
  • Building permit coordination
  • Site management and inspections

Standard site: class M soil, ex-slab, existing services connected. Site variations confirmed in quote.