Public government registers · last 12 months

Alterations and additions cost in Sydney (2026)

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

Middle: A$200,000
Middle half: A$70,000 - A$454,642

5876 applications with a declared cost, lodged between 2025-09-24 and 2026-09-24

Most recent application in this sample lodged 2026-09-23.

The 12 months before that

Middle A$196,250, over 170 applications.

Councils inside Sydney

Council	Applications	Middle
Northern Beaches Council	722	A$308,202
Inner West Council	522	A$299,435
Sutherland Shire Council	360	A$198,000
Woollahra Municipal Council	286	A$303,023
Randwick City Council	249	A$216,700
Council of the City of Sydney	247	A$318,000
Ku-ring-gai Council	241	A$207,268
The Hills Shire Council	235	A$120,000
The Council of the Shire of Hornsby	214	A$199,000
Blue Mountains City Council	196	A$128,500
Canterbury-Bankstown Council	196	A$155,000
Willoughby City Council	185	A$310,600
Penrith City Council	178	A$148,250
Blacktown City Council	176	A$145,400
Waverley Council	169	A$344,300
Bayside Council	150	A$193,750
City of Parramatta Council	150	A$155,000
Georges River Council	146	A$200,000
Mosman Municipal Council	123	A$630,465
City of Canada Bay Council	113	A$261,951
North Sydney Council	108	A$340,000
Cumberland Council	103	A$100,000
Liverpool City Council	103	A$65,000
Ryde City Council	101	A$150,000
Camden Council	93	A$92,500
Campbelltown City Council	86	A$67,900
Lane Cove Municipal Council	85	A$300,000
Wollondilly Shire Council	82	A$64,350
Hawkesbury City Council	77	A$95,150
Fairfield City Council	61	A$120,000
The Council of the Municipality of Hunters Hill	50	A$307,350
Burwood Council	42	A$212,835
Strathfield Municipal Council	24	A$237,125

Finished projects in Sydney

Haberfield Federation House Attic Renovation and ExtensionA$650,000 · Published by builder
Gladesville Full Renovation and Extension ProjectA$350,000 · Published by builder
Maroubra Second Storey Addition Renovation
Rozelle Freestanding Terrace House Renovation and Extension
Willoughby Home Renovation, Bringing in Sunlight and Ventilation
North Narrabeen Waterfront Residence Renovation

Alterations and additions 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 2026-09-24 · Data and licences