Development Applications in Thornleigh

Track all current and recent development applications in Thornleigh, New South Wales. Stay informed about new constructions, renovations, and planning permits in your area.

484
Total Applications
301
Unique Addresses
2026
Records Since
$505K
Avg. Project Cost

Recent Applications (20)

Get alerts for Thornleigh
CDC-372019Approved

41 ADAMSON AVENUE THORNLEIGH 2120

Alterations or additions to an existing building or structure; Residential Accommodation

Lodged: 16 July 2026
CFT-989180Under Assessment

49 STATION STREET THORNLEIGH 2120

Dwelling house; Erection of a new structure

Lodged: 9 July 2026
PAN-652758Under Assessment

12 ROACH AVENUE THORNLEIGH 2120

Demolition; Erection of a new structure; Dual occupancy (detached)

Lodged: 6 July 2026
CDC-369749Approved

19B BRIDGEVIEW CRESCENT THORNLEIGH 2120

Dwelling house; Alterations or additions to an existing building or structure; Residential Accommodation

Lodged: 3 July 2026
CFT-765889Under Assessment

1 NORMAN AVENUE THORNLEIGH 2120

Dwelling house

Lodged: 2 July 2026
PAN-646458Additional Information Requested

52 DUFFY AVENUE THORNLEIGH 2120

Demolition; Subdivision

Lodged: 20 June 2026
CDC-366658Approved

293-299 PENNANT HILLS ROAD THORNLEIGH 2120

Commercial development; Alterations or additions to an existing building or structure

Lodged: 19 June 2026
CFT-976597Determined

182 PENNANT HILLS ROAD THORNLEIGH 2120

Restaurant or cafe; Food and drink premise; Hours of operation and trading

Lodged: 19 June 2026
CFT-971544Determined

182 PENNANT HILLS ROAD THORNLEIGH 2120

Restaurant or cafe; Erection of a new structure

Lodged: 19 June 2026
PAN-646775Additional Information Requested

38 DUFFY AVENUE THORNLEIGH 2120

Subdivision

Lodged: 12 June 2026
CDC-364270Approved

35 STATION STREET THORNLEIGH 2120

Secondary dwelling; Erection of a new structure

Lodged: 10 June 2026
CFT-970144Under Assessment

15 DARTFORD ROAD THORNLEIGH 2120

Dwelling house; Erection of a new structure

Lodged: 9 June 2026
PAN-644491Additional Information Requested

17 MORGAN STREET THORNLEIGH 2120

Demolition; Dwelling house

Lodged: 9 June 2026
CFT-989343Determined

38 BUNGOWEN AVENUE THORNLEIGH 2120

Alterations and additions to residential development

Lodged: 9 June 2026
PAN-645579Additional Information Requested

11 ADAMSON AVENUE THORNLEIGH 2120

Dual occupancy; Demolition; Erection of a new structure; Dual occupancy (detached); Residential Accommodation

Lodged: 5 June 2026
CDC-359650Approved

35A SEFTON ROAD THORNLEIGH 2120

Office Premise; Alterations or additions to an existing building or structure; General industry

Lodged: 4 June 2026
CFT-963918Determined

35 STATION STREET THORNLEIGH 2120

Secondary dwelling; Demolition; Dwelling house; Erection of a new structure

Lodged: 29 May 2026
CDC-362454Under Assessment

11 ADAMSON AVENUE THORNLEIGH 2120

Secondary dwelling

Lodged: 28 May 2026
PAN-643095Determined

8 COOLABAH CLOSE THORNLEIGH 2120

Dwelling house; Alterations or additions to an existing building or structure; Erection of a new structure

Lodged: 27 May 2026
CDC-361975Approved

11 ROACH AVENUE THORNLEIGH 2120

Erection of a new structure; Swimming pool

Lodged: 27 May 2026

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About Development Applications in Thornleigh

Development Applications (DAs) in Thornleigh, New South Wales are submitted to the local council when property owners want to make changes to their property. This includes new buildings, renovations, additions, and other significant works.

By tracking DAs in Thornleigh, you can stay informed about upcoming construction in your neighbourhood, understand property development trends, and research potential investment opportunities.

What you can track:

  • New residential developments and subdivisions
  • Commercial building applications
  • Home renovations and extensions
  • Swimming pools and landscaping
  • Mixed-use developments

Sign up for free to receive alerts when new applications are lodged in Thornleigh and never miss important developments in your area.