Manly Observer provides a weekly summary of development applications lodged with Northern Beaches Council in the last week.
While every effort has been made to accurately represent the development applications, we recommend clicking the link (the DA number in the heading) which will take you to the relevant council page with detailed information.
Where exhibition periods have not yet been determined at the time of publication, Council is still gathering the required documention needed before notifying relevant parties. Once the exhibition period opens, there will be a link on the DA page for submissions – please refrain from submitting prior to this link becoming available.
A
12 Monserra Road, Allambie Heights – DA2025/1195
Exhibition Period: 15/09/2025 to 29/09/2025
Cost of Work: $440,419
Alterations and additions to a house.
23 Hudson Parade, Avalon Beach – DA2025/1247
Exhibition Period: Not yet determined at time of publication
Cost of Work: $748,000
Alterations and additions to a house, including a carport.
4 Trentwood Park, Avalon Beach – DA2025/1253
Exhibition Period: Not yet determined at time of publication
Cost of Work: $666,000
Alterations and additions to a house, including a swimming pool.
B
75 Beatrice Street, Balgowlah Heights – DA2025/1258
Exhibition Period: Not yet determined at time of publication
Cost of Work: $598,400
Alterations and additions to a house.
207 Forest Way, Belrose – DA2025/1212
Exhibition Period: Not yet determined at time of publication
Cost of Work: $205,000
Infill of existing water pond and associated landscaping works.
11 Merelyn Road, Belrose – DA2025/1189
Exhibition Period: 11/09/2025 to 25/09/2025
Cost of Work: $359,700
Alterations and additions to an existing residential dwelling, including a new garage and carport, swimming pool, decking, front porch and internal alterations.
C
8 Cutler Road, Clontarf – DA2025/1200
Exhibition Period: 15/09/2025 to 29/09/2025
Cost of Work: $1,812,093
Construction of a dual occupancy.
18 Ocean Grove, Collaroy – DA2025/1239
Exhibition Period: Not yet determined at time of publication
Cost of Work: $450,000
Alterations and additions to a house.
D
22 Sir Thomas Mitchell Drive, Davidson – DA2025/1238
Exhibition Period: 11/09/2025 to 25/09/2025
Cost of Work: $215,490
Construction of a swimming pool and associated works.
31 Banksia Street, Dee Why – DA2025/1193
Exhibition Period: Not yet determined at time of publication
Cost of Work: $35,200
Subdivision of one lot into two and change of use from a secondary dwelling to a principle dwelling on proposed lot two.
7 McIntosh Road, Dee Why – DA2025/1208
Exhibition Period: 11/09/2025 to 25/09/2025
Cost of Work: $167,000
Change of use to secondary dwelling.
E
20 Wongala Avenue, Elanora Heights – DA2025/1221
Exhibition Period: 15/09/2025 to 29/09/2025
Cost of Work: $342,730
Alterations and additions to a house.
F
2-4 Gladys Avenue, Frenchs Forest – DA2025/1215
Exhibition Period: 12/09/2025 to 03/10/2025
Cost of Work: $25,420,101
In December 2024, DA2023/1751 was approved for a residential apartment development with 28 apartments, and included provision for affordable housing under the Council’s affordable housing scheme.

Since that approval, the State’s Low to Mid Rise Housing policy has come into effect, allowing for additional heights, particularly as the site is located within 400m of the Frenchs Forest town centre.
The proposed development has a similar look and feel to the previously approved development; however, it will have an additional basement level increasing the car parking to 60 spaces in total, three additional floors, increase the apartments to 40 in total and relocation of the waste collection area within the basement.

The affordable housing component will be 20 per cent gross floor area in total (meeting both Council and State schemes) and the development will take the opportunity of the additional height allowances under the State’s scheme.
22-24 Greendale Avenue, Frenchs Forest – DA2025/1143
Exhibition Period: 11/09/2025 to 25/09/2025
Cost of Work: $16,500
Construction of front and side boundary fencing.
102 Prince Charles Road, Frenchs Forest – DA2025/1240
Exhibition Period: 15/09/2025 to 29/09/2025
Cost of Work: $1,063,975
Demolition works and construction of a dual occupancy and strata subdivision.
64 Albert Street, Freshwater – DA2025/1204
Exhibition Period: 11/09/2025 to 25/09/2025
Cost of Work: $957,693
Alterations and additions to a house, including a swimming pool.
I
3A Wattle Road, Ingleside – DA2025/1242
Exhibition Period: 15/09/2025 to 29/09/2025
Cost of Work: $4,682,807
Alterations and additions to a house, including a secondary dwelling.
K
2 Emmett Place, Killarney Heights – DA2025/1255
Exhibition Period: Not yet determined at time of publication
Cost of Work: $0
Change of use from secondary dwelling to dual occupancy.
M
14/11 Addison Road, Manly – DA2025/1213
Exhibition Period: Not yet determined at time of publication
Cost of Work: $300,300
Demolition works, external façade and internal layout alterations.
29 Eurobin Avenue, Manly – DA2025/1220
Exhibition Period: Not yet determined at time of publication
Cost of Work: $15,400
Alterations and additions to a house.
79 Barrenjoey Road, Mona Vale – DA2025/1227
Exhibition Period: Not yet determined at time of publication
Cost of Work: $104,500
The proposal seeks approval for the erection and display of a 16.16m² electronic advertising sign on the property, including display of third-party advertising.
N
17 Kalaui Street, North Balgowlah – DA2025/1203
Exhibition Period: 15/09/2025 to 29/09/2025
Cost of Work: $15,958
Alterations and additions to a house.
14 Makim Street, North Curl Curl – DA2025/1205
Exhibition Period: Not yet determined at time of publication
Cost of Work: $1,800,329
Demolition works and construction of a dual occupancy (attached) including swimming pools and Torrens Title subdivision.
12 Hope Avenue, North Manly – DA2025/1223
Exhibition Period: Not yet determined at time of publication
Cost of Work: $151,250
Construction of an inclinator and associated works.
31 Warraba Road, North Narrabeen – DA2025/1127
Exhibition Period: Not yet determined at time of publication
Cost of Work: $0
Change of use from mechanic workshop to joinery workshop.
Q
14/2 Queenscliff Road, Queenscliff – DA2025/1230
Exhibition Period: Not yet determined at time of publication
Cost of Work: $46,778
Alterations and additions to a residential flat building.
S
13 Clavering Road, Seaforth – DA2025/1222
Exhibition Period: Not yet determined at time of publication
Cost of Work: $2,692,848
Construction of a house, including a swimming pool.
161C Seaforth Crescent, Seaforth – DA2025/1210
Exhibition Period: Not yet determined at time of publication
Cost of Work: $184,250
Construction of an incline passenger.
W
10 Beauty Drive, Whale Beach – DA2025/1241
Exhibition Period: 15/09/2025 to 29/09/2025
Cost of Work: $45,000
Alterations and additions to a house.
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