Development applications in Castle Hill, NSW 2154

206 development applications were lodged for properties in Castle Hill from Oct 2025 to Sep 2026. What is being built, how much of it is housing, and where each application stands.

Latest council activity: 18 Sept 2026

Applications lodged

206

incl. 59 modifications

Decided

133

46 still in progress

New dwellings proposed

1,267

stated on applications

Declared construction value

$638.1M

across 118 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.

15
Oct
21
Nov
16
Dec
14
Jan
15
Feb
16
Mar
9
Apr
17
May
27
Jun
24
Jul
18
Aug
14
Sep

What is being proposed

147 new applications by main type of work (modifications excluded).

New houses35
Apartments & townhouses30
Commercial, industrial & community24
Alterations & additions19
Subdivisions14
Pools, sheds, garages & decks9
Dual occupancy & semi-detached7
Other & change of use5
Granny flats4

Where applications stand

Status of the 206 applications lodged in the last 12 months.

Approved: 1
Determined (outcome not stated): 132
Refused: 0
Withdrawn or not accepted: 27
In progress: 46

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.

4 Garthowen Crescent
Shop top housing, Change of use of land or a building or the classification of a building under the Building Code of Australia, Residential…
In progress
Apartments & townhouses · Lodged 29 June 2026 · 361 dwellings · $100M+
4 Garthowen Crescent
Shop top housing, Change of use of land or a building or the classification of a building under the Building Code of Australia, Residential…
In progress
Apartments & townhouses · Lodged 10 Sept 2026 · 361 dwellings · $20M–$100M
7 Cadman Crescent
Seniors housing, Independent living units, Erection of a new structure
Determined
Apartments & townhouses · Lodged 21 Nov 2025 · 224 dwellings · $1M–$5M
39 Castle Street
Co-living
In progress
Apartments & townhouses · Lodged 17 Sept 2026 · 102 dwellings · $20M–$100M
284 Castle Hill Road
Demolition, Seniors housing, Independent living units, Erection of a new structure
In progress
Apartments & townhouses · Lodged 4 Aug 2026 · 46 dwellings · $20M–$100M

Most recent applications

The 30 most recent applications lodged in Castle Hill, newest first. Costs are shown as bands.

16 Dawes Avenue
Residential flat building, Erection of a new structure
In progress
Apartments & townhouses · Lodged 18 Sept 2026 · 360 dwellings · $100M+ · Modification
39 Castle Street
Co-living
In progress
Apartments & townhouses · Lodged 17 Sept 2026 · 102 dwellings · $20M–$100M
16 Winchcombe Place
Erection of a new structure, Dual occupancy (attached)
In progress
Dual occupancy & semi-detached · Lodged 17 Sept 2026 · 2 dwellings · $1M–$5M
7 Cadman Crescent
Seniors housing, Independent living units, Erection of a new structure
In progress
Apartments & townhouses · Lodged 17 Sept 2026 · 224 dwellings · $1M–$5M · Modification
9 Helen Court
Dwelling house, Erection of a new structure
In progress
New houses · Lodged 15 Sept 2026 · 1 dwelling · $1M–$5M
60 Parsonage Road
Secondary dwelling, Demolition, Erection of a new structure
In progress
Granny flats · Lodged 14 Sept 2026 · 1 dwelling · $100K–$500K
54 Marie Street
Demolition, Dwelling house, Erection of a new structure
In progress
New houses · Lodged 14 Sept 2026 · 1 dwelling · Under $100K
30-32 Telfer Road
Subdivision, Centre-based child care
In progress
Subdivisions · Lodged 11 Sept 2026 · Under $100K
4 Garthowen Crescent
Shop top housing, Change of use of land or a building or the classification of a building under the Building Code of Australia, Residential…
In progress
Apartments & townhouses · Lodged 10 Sept 2026 · 361 dwellings · $20M–$100M
70 Castlewood Drive
Demolition, Erection of a new structure, Cabanas, cubby houses, ferneries, garden sheds, gazebos and greenhouses, Earthworks, retaining…
In progress
Pools, sheds, garages & decks · Lodged 9 Sept 2026 · $100K–$500K
39 Arlington Avenue
Secondary dwelling, Demolition, Dwelling house, Erection of a new structure
In progress
New houses · Lodged 7 Sept 2026 · 2 dwellings · $1M–$5M
40 First Farm Drive
Demolition, Erection of a new structure, Multi-dwelling housing (terraces)
In progress
Apartments & townhouses · Lodged 2 Sept 2026 · 3 dwellings · $1M–$5M
33 Coolibah Street
Dwelling house, Erection of a new structure
In progress
New houses · Lodged 1 Sept 2026 · 1 dwelling · $500K–$1M
41 Fishburn Crescent
Demolition, Subdivision, Erection of a new structure, Multi-dwelling housing (terraces)
In progress
Apartments & townhouses · Lodged 1 Sept 2026 · 3 dwellings · $1M–$5M
110B Excelsior Avenue
Dwelling house, Erection of a new structure, Residential Accommodation
In progress
New houses · Lodged 31 Aug 2026 · 1 dwelling · $1M–$5M
34 Parsonage Road
Dual occupancy, Erection of a new structure
Withdrawn
Dual occupancy & semi-detached · Lodged 28 Aug 2026 · 2 dwellings · $1M–$5M
9 Narelle Avenue
Home business, Change of use of land or a building or the classification of a building under the Building Code of Australia
In progress
Other & change of use · Lodged 27 Aug 2026
23 Woodhill Street
Dwelling house, Erection of a new structure, Earthworks, retaining walls and structural support
Determined
New houses · Lodged 20 Aug 2026 · 1 dwelling · $100K–$500K · Modification
16-20 Salisbury Road
Change of use of land or a building or the classification of a building under the Building Code of Australia, Recreation facility (indoor)
In progress
Commercial, industrial & community · Lodged 20 Aug 2026 · $100K–$500K
95 Showground Road
Demolition, Subdivision, Medium Density Housing, Erection of a new structure, Multi-dwelling housing (terraces)
In progress
Apartments & townhouses · Lodged 19 Aug 2026 · 3 dwellings · $1M–$5M
264-266 Old Northern Road
Restaurant or cafe, Alterations or additions to an existing building or structure
In progress
Commercial, industrial & community · Lodged 19 Aug 2026 · $1M–$5M
30 Cadman Crescent
Demolition, Subdivision, Erection of a new structure, Multi-dwelling housing (terraces), Swimming pool
In progress
Apartments & townhouses · Lodged 19 Aug 2026 · 3 dwellings · $1M–$5M
11 Rowallan Avenue
Dual occupancy, Demolition, Erection of a new structure
In progress
Dual occupancy & semi-detached · Lodged 16 Aug 2026 · 4 dwellings · $1M–$5M
16 Dawes Avenue
Residential flat building, Erection of a new structure
In progress
Apartments & townhouses · Lodged 15 Aug 2026 · 360 dwellings · $100M+ · Modification
6 Coonardoo Place
Demolition, Dwelling house, Erection of a new structure
Determined
New houses · Lodged 12 Aug 2026 · 1 dwelling · $1M–$5M · Modification
14 Cadman Crescent
Demolition, Subdivision, Erection of a new structure, Multi-dwelling housing (terraces)
In progress
Apartments & townhouses · Lodged 11 Aug 2026 · 3 dwellings · $1M–$5M
27 Victoria Avenue
Change of use of land or a building or the classification of a building under the Building Code of Australia, Vehicle Sales or Hire Premises
In progress
Commercial, industrial & community · Lodged 11 Aug 2026
386 Old Northern Road
Demolition, Dwelling house, Alterations or additions to an existing building or structure
In progress
Alterations & additions · Lodged 10 Aug 2026 · $100K–$500K
24 Whitling Avenue
Demolition, Subdivision, Multi-dwelling housing (terraces)
In progress
Apartments & townhouses · Lodged 6 Aug 2026 · 3 dwellings · $1M–$5M
6-14 Castle Street
Alterations or additions to an existing building or structure, Car park
Determined
Commercial, industrial & community · Lodged 5 Aug 2026 · $5M–$20M · Modification

Application details as published by The Hills Shire Council, The Council of the Shire of Hornsby. The council's own register is the authoritative record for any individual application.

Suburb profile

Castle Hill market data

Median prices, rental yield, growth, vacancy and properties for sale in Castle Hill.

Sales

Recently sold in Castle Hill

What buyers actually paid, days on market and recent sale prices in Castle Hill.

Development in Castle Hill: frequently asked questions

How many development applications were lodged in Castle Hill in the last 12 months?

206 development applications were lodged for properties in Castle Hill from Oct 2025 to Sep 2026. 59 were modifications to an earlier application. The busiest month was Jun 2026, with 27 applications.

What kind of development is happening in Castle Hill?

Of the new applications lodged in the last 12 months, the most common were new houses (35), apartments & townhouses (30), commercial, industrial & community (24).

How many new homes are proposed in Castle Hill?

Applications lodged in Castle Hill in the last 12 months propose 1,267 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 Castle Hill have been decided?

Of the 206 applications lodged in the last 12 months, 133 have a decision (1 recorded as approved, 132 recorded as determined without the outcome stated), 46 are still in progress and 27 were withdrawn or not accepted.

Which council assesses development applications in Castle Hill?

Applications for Castle Hill are lodged with The Hills Shire Council and The Council of the Shire of Hornsby. Each council's public register is the authoritative record for any individual application.