Development applications in Arcadia, NSW 2159
12 development applications were lodged for properties in Arcadia 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
12
incl. 3 modifications
Decided
6
4 still in progress
New dwellings proposed
0
stated on applications
Declared construction value
$3.1M
across 7 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.
- 0Oct
- 1Nov
- 1Dec
- 1Jan
- 0Feb
- 0Mar
- 2Apr
- 2May
- 0Jun
- 1Jul
- 2Aug
- 2Sep
What is being proposed
9 new applications by main type of work (modifications excluded).
- New houses4
- Alterations & additions3
- Commercial, industrial & community1
- Pools, sheds, garages & decks1
Where applications stand
Status of the 12 applications lodged in the last 12 months.
- Approved
- 0
- Determined (outcome not stated)
- 6
- Refused
- 0
- Withdrawn or not accepted
- 2
- In progress
- 4
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
24 Cobah Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 18 Aug 2026 · $1M–$5M
- Determined
36 Smalls Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 21 Apr 2026 · $500K–$1M
- In progress
22 Cobah Road
Dwelling house, Erection of a new structure, Residential Accommodation
New houses · Lodged 4 Sept 2026 · $100K–$500K
- Determined
22 Calabash Road
Dwelling house, Erection of a new structure, Residential Accommodation
New houses · Lodged 4 Dec 2025 · $100K–$500K
- Determined
137-139 Arcadia Road
Erection of a new structure, Cabanas, cubby houses, ferneries, garden sheds, gazebos and greenhouses, Swimming pool
Pools, sheds, garages & decks · Lodged 20 Apr 2026 · Under $100K
Most recent applications
The 30 most recent applications lodged in Arcadia, newest first. Costs are shown as bands.
- In progress
9 Cobah Road
Farm buildings, Temporary building, structure or use
Commercial, industrial & community · Lodged 9 Sept 2026 · Under $100K
- In progress
22 Cobah Road
Dwelling house, Erection of a new structure, Residential Accommodation
New houses · Lodged 4 Sept 2026 · $100K–$500K
- In progress
24 Cobah Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 18 Aug 2026 · $1M–$5M
- Determined
110 Arcadia Road
Shed, Alterations or additions to an existing building or structure, Supporting Development
Alterations & additions · Lodged 12 Aug 2026 · Under $100K
- In progress
152-156 Arcadia Road
Dwelling house, Erection of a new structure
New houses · Lodged 20 July 2026 · 1 dwelling · $5M–$20M · Modification
- Withdrawn
22 Cobah Road
Dwelling house, Erection of a new structure, Residential Accommodation
New houses · Lodged 29 May 2026 · $100K–$500K
- Withdrawn
22 Cobah Road
Dwelling house, Erection of a new structure, Residential Accommodation
New houses · Lodged 27 May 2026 · $100K–$500K
- Determined
36 Smalls Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 21 Apr 2026 · $500K–$1M
- Determined
137-139 Arcadia Road
Erection of a new structure, Cabanas, cubby houses, ferneries, garden sheds, gazebos and greenhouses, Swimming pool
Pools, sheds, garages & decks · Lodged 20 Apr 2026 · Under $100K
- Determined
8-12 Fagans Road
Erection of a new structure, Group home (transitional)
Other & change of use · Lodged 14 Jan 2026 · $1M–$5M · Modification
- Determined
22 Calabash Road
Dwelling house, Erection of a new structure, Residential Accommodation
New houses · Lodged 4 Dec 2025 · $100K–$500K
- Determined
6 Bay Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 20 Nov 2025 · $1M–$5M · Modification
- Withdrawn
91 Arcadia Road
Erection of a new structure, Home industry, Garage, carport or carparking space
Commercial, industrial & community · Lodged 9 Sept 2025 · $100K–$500K
- Determined
6 Roscommon Road
Shed, Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 30 July 2025 · Under $100K
- Determined
9C Sunnyridge Road
Farm buildings, Dwelling house, Alterations or additions to an existing building or structure, Erection of a new structure, Earthworks…
Commercial, industrial & community · Lodged 19 July 2025 · $100K–$500K
- Determined
9A Geelans Road
Farm buildings, Alterations or additions to an existing building or structure
Commercial, industrial & community · Lodged 11 June 2025 · $100K–$500K
- Determined
8-12 Fagans Road
Erection of a new structure, Group home (transitional)
Other & change of use · Lodged 6 May 2025 · $5M–$20M
- Determined
8 Bay Road
Dwelling house, Erection of a new structure
New houses · Lodged 23 Apr 2025 · Under $100K
- Determined
26-28 Cobah Road
Secondary dwelling, Alterations or additions to an existing building or structure, Erection of a new structure
Granny flats · Lodged 10 Jan 2025 · 1 dwelling · $100K–$500K
- Determined
6 Bay Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 31 Oct 2024 · $1M–$5M · Modification
- Determined
6 Banksia Place
Dwelling house, Erection of a new structure
New houses · Lodged 30 Oct 2024 · 1 dwelling · $500K–$1M · Modification
- Determined
8 Roscommon Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 10 Oct 2024 · $100K–$500K · Modification
- Determined
17 Halls Road
Shed, Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 20 Sept 2024 · $500K–$1M · Modification
- Determined
10 Blacks Road
Temporary building, structure or use, Function centre
Commercial, industrial & community · Lodged 5 Sept 2024 · Under $100K
- Determined
24 Cobah Road
Demolition, Dwelling house, Erection of a new structure, Landscaping structures, Rainwater tanks, Swimming pool
New houses · Lodged 3 Sept 2024 · 1 dwelling · $1M–$5M
- Determined
8 Roscommon Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 28 June 2024 · $100K–$500K · Modification
- Determined
6 Bay Road
Dwelling house, Alterations or additions to an existing building or structure
Alterations & additions · Lodged 18 June 2024 · $1M–$5M
- Determined
21 Wylds Road
Secondary dwelling, Erection of a new structure
Granny flats · Lodged 24 May 2024 · 1 dwelling · $100K–$500K
- Determined
43-71 Calabash Road
Demolition, Dwelling house, Erection of a new structure
New houses · Lodged 22 May 2024 · 1 dwelling · $1M–$5M · Modification
- Determined
22 Calabash Road
Erection of a new structure, Home industry, Farm building
Commercial, industrial & community · Lodged 16 Mar 2024 · $500K–$1M
Application details as published by The Council of the Shire of Hornsby. The council's own register is the authoritative record for any individual application.
Suburb profile
Arcadia market data
Median prices, rental yield, growth, vacancy and properties for sale in Arcadia.
Sales
Recently sold in Arcadia
What buyers actually paid, days on market and recent sale prices in Arcadia.
Development in Arcadia: frequently asked questions
How many development applications were lodged in Arcadia in the last 12 months?
12 development applications were lodged for properties in Arcadia from Oct 2025 to Sep 2026. 3 were modifications to an earlier application. The busiest month was Apr 2026, with 2 applications.
What kind of development is happening in Arcadia?
Of the new applications lodged in the last 12 months, the most common were new houses (4), alterations & additions (3), commercial, industrial & community (1).
How many development applications in Arcadia have been decided?
Of the 12 applications lodged in the last 12 months, 6 have a decision (6 recorded as determined without the outcome stated), 4 are still in progress and 2 were withdrawn or not accepted.
Which council assesses development applications in Arcadia?
Applications for Arcadia are lodged with The Council of the Shire of Hornsby. Its public register is the authoritative record for any individual application.