Development applications in Mosman, NSW 2088
316 development applications were lodged for properties in Mosman from Oct 2025 to Sep 2026. What is being built, how much of it is housing, and where each application stands.
Latest council activity:
Applications lodged
316
incl. 117 modifications
Decided
173
116 still in progress
New dwellings proposed
281
stated on applications
Declared construction value
$573.1M
across 180 applications
Applications lodged each month
Oct 2025 to Sep 2026. The latest month is month-to-date, and councils can publish applications a few weeks after lodgement.
- 31Oct
- 33Nov
- 37Dec
- 18Jan
- 27Feb
- 17Mar
- 13Apr
- 18May
- 27Jun
- 36Jul
- 31Aug
- 28Sep
What is being proposed
199 new applications by main type of work (modifications excluded).
- Alterations & additions127
- New houses20
- Apartments & townhouses16
- Commercial, industrial & community12
- Dual occupancy & semi-detached7
- Pools, sheds, garages & decks7
- Subdivisions6
- Other & change of use3
- Demolition only1
Where applications stand
Status of the 316 applications lodged in the last 12 months.
- Approved
- 1
- Determined (outcome not stated)
- 172
- Refused
- 0
- Withdrawn or not accepted
- 27
- In progress
- 116
Many council records only say an application was "determined", without saying whether it was approved, so those are shown separately rather than counted as approvals.
Largest projects in the last 12 months
Ranked by dwellings proposed, then declared construction cost.
- In progress
44 Rangers Avenue
Demolition, Residential flat building, Erection of a new structure, Residential Accommodation
Apartments & townhouses · Lodged 18 Dec 2025 · 103 dwellings · $100M+
- In progress
89 Cowles Road
Demolition, Residential flat building, Erection of a new structure, Residential Accommodation
Apartments & townhouses · Lodged 17 Mar 2026 · 41 dwellings · $20M–$100M
- In progress
3 Moruben Road
Demolition, Residential flat building, Subdivision, Erection of a new structure
Apartments & townhouses · Lodged 17 Nov 2025 · 27 dwellings · $20M–$100M
- In progress
7 Bond Street
Demolition, Residential flat building, Erection of a new structure
Apartments & townhouses · Lodged 7 Nov 2025 · 27 dwellings · $20M–$100M
- In progress
98 Cowles Road
Demolition, Residential flat building, Erection of a new structure
Apartments & townhouses · Lodged 21 May 2026 · 23 dwellings · $5M–$20M
Most recent applications
The 30 most recent applications lodged in Mosman, newest first. Costs are shown as bands.
- In progress
4 Parriwi Road
Demolition, Residential flat building, Subdivision, Erection of a new structure
Apartments & townhouses · Lodged 17 Sept 2026 · 4 dwellings · Modification
- In progress
28 Clanalpine Street
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 17 Sept 2026 · Modification
- In progress
494 Military Road
Demolition
Demolition only · Lodged 16 Sept 2026 · $1M–$5M
- Withdrawn
39 Clanalpine Street
Dwelling house, Erection of a new structure
New houses · Lodged 16 Sept 2026 · 1 dwelling · $1M–$5M
- In progress
38 Shadforth Street
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 16 Sept 2026 · $500K–$1M
- Withdrawn
17 Reginald Street
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 15 Sept 2026 · $100K–$500K
- In progress
18A Spencer Road
Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Alterations & additions · Lodged 11 Sept 2026 · $1M–$5M
- In progress
13 Stanley Avenue
Demolition, Dwelling house, Erection of a new structure, Residential Accommodation
New houses · Lodged 11 Sept 2026 · 1 dwelling · $5M–$20M · Modification
- In progress
5 Thompson Street
Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Alterations & additions · Lodged 10 Sept 2026 · $1M–$5M
- In progress
13 Clanalpine Street
Dwelling house, Erection of a new structure
New houses · Lodged 10 Sept 2026 · 1 dwelling · $1M–$5M · Modification
- In progress
95 Rangers Avenue
Alterations or additions to an existing building or structure, Semi-detached dwelling
Dual occupancy & semi-detached · Lodged 9 Sept 2026 · $100K–$500K · Modification
- In progress
57 Mandolong Road
Demolition, Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Alterations & additions · Lodged 9 Sept 2026 · $500K–$1M
- In progress
55 Avenue Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 9 Sept 2026 · $1M–$5M
- In progress
23 Parriwi Road
Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Alterations & additions · Lodged 8 Sept 2026 · $5M–$20M · Modification
- In progress
48 Killarney Street
Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Alterations & additions · Lodged 7 Sept 2026 · $500K–$1M
- In progress
80 Prince Albert Street
Demolition, Dwelling house, Alterations or additions to an existing building or structure, Carport, Residential Accommodation
Alterations & additions · Lodged 4 Sept 2026 · $500K–$1M
- In progress
23 Holt Avenue
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 4 Sept 2026 · $500K–$1M
- In progress
6 Musgrave Street
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 4 Sept 2026 · $1M–$5M · Modification
- In progress
36 Middle Head Road
Dwelling house, Alterations or additions to an existing building or structure, Carport, Driveways and hard stand spaces, Fences
Alterations & additions · Lodged 3 Sept 2026 · $100K–$500K
- In progress
46 Clanalpine Street
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 3 Sept 2026 · $1M–$5M
- In progress
2 James Street
Demolition, Dwelling house, Erection of a new structure
New houses · Lodged 2 Sept 2026 · 1 dwelling · $5M–$20M
- In progress
28 Pearl Bay Avenue
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 2 Sept 2026 · $100K–$500K
- In progress
3 Want Street
Alterations or additions to an existing building or structure, Driveways and hard stand spaces, Fences, Supporting Development
Alterations & additions · Lodged 1 Sept 2026 · Under $100K
- In progress
2 8 Awaba Street
Subdivision
Subdivisions · Lodged 1 Sept 2026 · Under $100K
- In progress
107 Shadforth Street
Alterations or additions to an existing building or structure, Fences
Alterations & additions · Lodged 1 Sept 2026 · Under $100K
- In progress
11 Curraghbeena Road
Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Alterations & additions · Lodged 1 Sept 2026 · $1M–$5M
- In progress
11 Plunkett Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 1 Sept 2026 · $100K–$500K
- In progress
161 Middle Head Road
Demolition, Residential flat building, Shop top housing, Subdivision, Alterations or additions to an existing building or structure…
Apartments & townhouses · Lodged 1 Sept 2026 · 6 dwellings · $5M–$20M
- In progress
16 Illawarra Street
Alterations or additions to an existing building or structure, Residential Accommodation
Alterations & additions · Lodged 31 Aug 2026 · Under $100K · Modification
- In progress
181 Raglan Street
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 28 Aug 2026 · $500K–$1M
Application details as published by Mosman Municipal Council. The council's own register is the authoritative record for any individual application.
Suburb profile
Mosman market data
Median prices, rental yield, growth, vacancy and properties for sale in Mosman.
Sales
Recently sold in Mosman
What buyers actually paid, days on market and recent sale prices in Mosman.
Development in Mosman: frequently asked questions
How many development applications were lodged in Mosman in the last 12 months?
316 development applications were lodged for properties in Mosman from Oct 2025 to Sep 2026. 117 were modifications to an earlier application. The busiest month was Dec 2025, with 37 applications.
What kind of development is happening in Mosman?
Of the new applications lodged in the last 12 months, the most common were alterations & additions (127), new houses (20), apartments & townhouses (16).
How many new homes are proposed in Mosman?
Applications lodged in Mosman in the last 12 months propose 281 new dwellings, counting new houses, granny flats, dual occupancies, townhouses and apartments where the application states a dwelling count. Withdrawn applications and modifications are excluded.
How many development applications in Mosman have been decided?
Of the 316 applications lodged in the last 12 months, 173 have a decision (1 recorded as approved, 172 recorded as determined without the outcome stated), 116 are still in progress and 27 were withdrawn or not accepted.
Which council assesses development applications in Mosman?
Applications for Mosman are lodged with Mosman Municipal Council. Its public register is the authoritative record for any individual application.