Development applications in Galston, NSW 2159

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

Latest council activity: 15 Sept 2026

Applications lodged

incl. 11 modifications

Decided

10 still in progress

New dwellings proposed

stated on applications

Declared construction value

$12.0M

across 17 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.

3
Oct
1
Nov
0
Dec
3
Jan
4
Feb
2
Mar
2
Apr
2
May
3
Jun
4
Jul
5
Aug
1
Sep

What is being proposed

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

New houses6
Alterations & additions5
Pools, sheds, garages & decks3
Granny flats2
Subdivisions2
Other & change of use1

Where applications stand

Status of the 30 applications lodged in the last 12 months.

Approved: 1
Determined (outcome not stated): 17
Refused: 0
Withdrawn or not accepted: 2
In progress: 10

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.

14 Calderwood Road
Secondary dwelling, Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Determined
Granny flats · Lodged 24 Feb 2026 · 2 dwellings · $500K–$1M
5 Matthew Close
Demolition, Dwelling house, Erection of a new structure, Earthworks, retaining walls and structural support
In progress
New houses · Lodged 17 Aug 2026 · 1 dwelling · $1M–$5M
395 Galston Road
Dwelling house, Erection of a new structure
In progress
New houses · Lodged 2 July 2026 · 1 dwelling · $1M–$5M
315-317 Galston Road
Dwelling house, Erection of a new structure, Residential Accommodation
In progress
New houses · Lodged 18 Aug 2026 · 1 dwelling · $1M–$5M
16A Mid Dural Road
Dwelling house, Erection of a new structure
Determined
New houses · Lodged 3 Feb 2026 · 1 dwelling · $500K–$1M

Most recent applications

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

6A Sylvan Street
Change of use of land or a building or the classification of a building under the Building Code of Australia, Group home (permanent)
In progress
Other & change of use · Lodged 15 Sept 2026 · Under $100K
315-317 Galston Road
Dwelling house, Erection of a new structure, Residential Accommodation
In progress
New houses · Lodged 18 Aug 2026 · 1 dwelling · $1M–$5M
5 Matthew Close
Demolition, Dwelling house, Erection of a new structure, Earthworks, retaining walls and structural support
In progress
New houses · Lodged 17 Aug 2026 · 1 dwelling · $1M–$5M
41 Knights Road
Secondary dwelling, Dwelling house, Change of use of land or a building or the classification of a building under the Building Code of…
In progress
New houses · Lodged 6 Aug 2026 · 1 dwelling · Under $100K
9-11 Halls Road
Shed, Dwelling house, Alterations or additions to an existing building or structure, Driveways and hard stand spaces, Earthworks, retaining…
In progress
Alterations & additions · Lodged 6 Aug 2026 · $1M–$5M
49 Nancy Place
Dwelling house, Alterations or additions to an existing building or structure
In progress
Alterations & additions · Lodged 5 Aug 2026 · $100K–$500K
330-334 Galston Road
Alterations or additions to an existing building or structure, Tennis courts
Determined
Alterations & additions · Lodged 23 July 2026 · Modification
395 Galston Road
Alterations or additions to an existing building or structure, Cabanas, cubby houses, ferneries, garden sheds, gazebos and greenhouses…
In progress
Alterations & additions · Lodged 13 July 2026 · $500K–$1M
41 Knights Road
Dwelling house, Change of use of land or a building or the classification of a building under the Building Code of Australia, Residential…
In progress
New houses · Lodged 4 July 2026 · 1 dwelling · Under $100K · Modification
395 Galston Road
Dwelling house, Erection of a new structure
In progress
New houses · Lodged 2 July 2026 · 1 dwelling · $1M–$5M
1 Halls Road
Home business, Dwelling house, Subdivision, Alterations or additions to an existing building or structure
In progress
Subdivisions · Lodged 26 June 2026 · $500K–$1M
16A Mid Dural Road
Dwelling house, Erection of a new structure
Determined
New houses · Lodged 9 June 2026 · 1 dwelling · $500K–$1M · Modification
330-334 Galston Road
Multi-dwelling housing, Alterations or additions to an existing building or structure
Determined
Alterations & additions · Lodged 3 June 2026 · $100K–$500K · Modification
9-11 Halls Road
Subdivision
Determined
Subdivisions · Lodged 14 May 2026 · Under $100K · Modification
392 Galston Road
Independent living units, Erection of a new structure
Determined
Other & change of use · Lodged 13 May 2026 · Modification
6 Megan Road
Dwelling house, Alterations or additions to an existing building or structure
Determined
Alterations & additions · Lodged 9 Apr 2026 · $100K–$500K · Modification
330-334 Galston Road
Erection of a new structure, Tennis courts
Determined
Other & change of use · Lodged 1 Apr 2026 · $20M–$100M · Modification
8-10 Crosslands Road
Demolition, Shed, Erection of a new structure, Carport, Earthworks, retaining walls and structural support
Determined
Pools, sheds, garages & decks · Lodged 24 Mar 2026 · $100K–$500K
16 Fishburns Road
Secondary dwelling, Dwelling house, Alterations or additions to an existing building or structure, Erection of a new structure, Residential…
Determined
Granny flats · Lodged 17 Mar 2026 · 1 dwelling · Under $100K · Modification
14 Calderwood Road
Secondary dwelling, Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Determined
Granny flats · Lodged 24 Feb 2026 · 2 dwellings · $500K–$1M
10 Chadd Street
Secondary dwelling, Alterations or additions to an existing building or structure
Approved
Granny flats · Lodged 10 Feb 2026 · Under $100K
16A Mid Dural Road
Dwelling house, Erection of a new structure
Determined
New houses · Lodged 3 Feb 2026 · 1 dwelling · $500K–$1M
32 Hansen Avenue
Shed, Erection of a new structure, Supporting Development
Determined
Pools, sheds, garages & decks · Lodged 3 Feb 2026 · Under $100K
16A Mid Dural Road
Dwelling house, Erection of a new structure
Withdrawn
New houses · Lodged 21 Jan 2026 · 1 dwelling · $500K–$1M
12 Karalee Road
Erection of a new structure, Swimming pool
Determined
Pools, sheds, garages & decks · Lodged 13 Jan 2026 · Under $100K
83 Crosslands Road
Dwelling house, Erection of a new structure
Determined
New houses · Lodged 6 Jan 2026 · 1 dwelling · Modification
330-334 Galston Road
Seniors housing, Independent living units, Erection of a new structure
Determined
Apartments & townhouses · Lodged 14 Nov 2025 · 88 dwellings · $20M–$100M · Modification
4 Griffith Close
Dwelling house, Alterations or additions to an existing building or structure
Determined
Alterations & additions · Lodged 15 Oct 2025 · $100K–$500K
2 Martin Road
Dwelling house, Alterations or additions to an existing building or structure, Residential Accommodation
Determined
Alterations & additions · Lodged 15 Oct 2025 · $100K–$500K
335 Galston Road
Subdivision
Withdrawn
Subdivisions · Lodged 7 Oct 2025

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

Galston market data

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

Sales

Recently sold in Galston

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

Development in Galston: frequently asked questions

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

30 development applications were lodged for properties in Galston from Oct 2025 to Sep 2026. 11 were modifications to an earlier application. The busiest month was Aug 2026, with 5 applications.

What kind of development is happening in Galston?

Of the new applications lodged in the last 12 months, the most common were new houses (6), alterations & additions (5), pools, sheds, garages & decks (3).

How many new homes are proposed in Galston?

Applications lodged in Galston in the last 12 months propose 7 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 Galston have been decided?

Of the 30 applications lodged in the last 12 months, 18 have a decision (1 recorded as approved, 17 recorded as determined without the outcome stated), 10 are still in progress and 2 were withdrawn or not accepted.

Which council assesses development applications in Galston?

Applications for Galston are lodged with The Council of the Shire of Hornsby. Its public register is the authoritative record for any individual application.