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Public government registers · last 12 months

Granny flat cost in Sydney (2026)

Sydney here means postcodes 2000-2249, 2555-2574, 2740-2786.

Middle
A$160,000
Middle half
A$140,000 - A$188,225

2788 applications with a declared cost, lodged between 2025-09-23 and 2026-09-23

71 lodgements were too small to be a whole project of this kind and were left out of the band.

Most recent application in this sample lodged 2026-09-12.

The 12 months before that

Middle A$160,000, over 81 applications.

Councils inside Sydney

CouncilApplicationsMiddle
Blacktown City Council506A$158,995
Fairfield City Council301A$160,500
Penrith City Council299A$160,000
Canterbury-Bankstown Council289A$154,000
Campbelltown City Council279A$153,910
Liverpool City Council252A$150,000
Cumberland Council203A$150,000
City of Parramatta Council96A$160,000
Northern Beaches Council75A$199,000
The Council of the Shire of Hornsby64A$190,930
Georges River Council60A$178,525
The Hills Shire Council60A$160,750
Camden Council56A$150,000
Wollondilly Shire Council50A$219,655
Bayside Council35A$169,340
Blue Mountains City Council35A$163,900
Ryde City Council33A$170,000
Hawkesbury City Council31A$150,000
Sutherland Shire Council26A$153,201
Inner West Council20A$210,035
Willoughby City Council18A$183,325
Ku-ring-gai Council16A$216,200
Randwick City Council15A$186,100
City of Canada Bay Council14A$200,000
Burwood Council10A$191,250

Finished projects in Sydney

  • Allambie Heights Backyard Granny Flat Project R50
  • Concord West Cottage Project
  • Wahroonga Granny Flat Project
  • Ambarvale Backyard Granny Flat Project
  • Berowra Heights Granny Flat Project
  • Mount Colah A50 Backyard Granny Flat

Granny flat on your block: type your address to see whether it is allowed · Check this block

A declared cost of works is the applicant’s own estimate, filed so the council can work out a lodgement fee. It is not a contract price. Under the official definition it covers design and construction and excludes GST and the land.

Data from the states public planning registers and licence rolls · refreshed 2026-09-14 · Data and licences

Other project types in Sydney

  • Dual occupancy
  • Knockdown rebuild
  • Townhouses
  • New house
  • Alterations and additions

Granny flat in other regions

  • Central Coast
  • Newcastle and Hunter
  • Wollongong and Illawarra
  • Regional NSW
Every region and project type

SeeBuilds

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Language

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Legal

Privacy Policy →Terms of Service →Unsubscribe from email →

Data is used under its publishers' open licences; see Data and licences.

© 2026 SeeBuilds