Castle Hill
56 DAs lodged · last 90 daysMarket Intelligence
DAs Lodged
56↑
past 90 days · NSW Planning Portal
Professionals
—
covering this suburb
Median Project Value
$1,089,000
DAs lodged, past 90 days
Median Approval Time
80 days
approved DAs, last 12 months
As of 14 July 2026, Castle Hill recorded 56 — Development applications lodged in Castle Hill in the past 90 days (NSW Planning Portal)
As of 14 July 2026, Castle Hill recorded $1,089,000 — Median estimated cost of development for DAs lodged in Castle Hill in the past 90 days (NSW Planning Portal)
As of 14 July 2026, Castle Hill recorded 80 days — Median lodgement-to-determination time for approved DAs in Castle Hill, last 12 months (NSW Planning Portal)
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Recent Development Applications
Total dev. value
$10,765,061
Development types
Source
NSW Planning Portal
PAN-653149
29 DAVID ROAD CASTLE HILL 2154
Dwelling house; Erection of a new structure; Residential Accommodation
$630,159
2-storey · 1 new dwelling
PAN-652474
135 CECIL AVENUE CASTLE HILL 2154
Dwelling house; Erection of a new structure
$1,089,000
1 new dwelling
PAN-653469
Modification Application15 TELFER ROAD CASTLE HILL 2154
Demolition; Dwelling house; Erection of a new structure
$1,067,000
2-storey · 1 new dwelling
PAN-654148
Review of determination20 ORANGE GROVE CASTLE HILL 2154
Demolition; Subdivision; Erection of a new structure; Dual occupancy (attached); Swimming pool
$2,425,500
2 new dwellings
PAN-650200
Modification Application284 CASTLE HILL ROAD CASTLE HILL 2154
Erection of a new structure; Landscaping structures; Pathways and paving; Sculptures and artworks
$1,463,000
PAN-652612
44 OAKHILL DRIVE CASTLE HILL 2154
Alterations or additions to an existing building or structure; Cabanas, cubby houses, ferneries, gar…
$25,000
PAN-652863
Modification Application37 MILEHAM AVENUE CASTLE HILL 2154
Dwelling house; Alterations or additions to an existing building or structure; Erection of a new str…
$630,250
1-storey · 2 new dwellings
PAN-652855
284 CASTLE HILL ROAD CASTLE HILL 2154
Alterations or additions to an existing building or structure; Access ramp; Landscaping structures; …
$1,356,116
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Browse all pros →You own or are buying in Castle Hill, now you need builders in Castle Hill who know The Hills Shire Council's rules, the 2154 block sizes, and what quality actually costs here.
Castle Hill Development Snapshot
Castle Hill (postcode 2154) sits within The Hills Shire Council LGA, one of Sydney's most active residential construction markets. The suburb's demand drivers are well-documented in income and education data:
- The 2154 postcode is home to 25,547 income-earning individuals, with an average taxable income of $87,281 and a median of $59,148 (ATO, latest available year). This income profile sustains consistent demand for premium residential construction, additions and knockdown rebuilds.
- The suburb is served by 10 schools with an average ICSEA score of 1,124 (ACARA, latest available year), a figure that directly influences resale value and keeps demand for well-designed family homes structurally elevated. Oakhill Drive Public School (ICSEA 1,152) and Excelsior Public School (ICSEA 1,150) are among the highest-performing primaries in the Hills District.
- Oakhill College enrols 2,242 students and Castle Hill High School 1,845 students (ACARA, latest available year), underlining the family-formation density that drives dual-living, extension and knockdown rebuild activity.
Note: DA volume, median project value and approval time data for The Hills Shire were not available in the current data pack and have been omitted rather than estimated. Subscribe to free DA alerts to track live lodgements in your street as they are filed with council.
Cost to Build in Castle Hill, What to Expect
Indicative figures only, sourced from ABS producer price and construction cost indices. Always obtain fixed-price quotes from licensed builders.
Castle Hill's affluent demographic (average taxable income $87,281, ATO) and its position as a Hills District prestige suburb mean most new homes and knockdown rebuilds are specified to a mid-to-premium standard. Several local cost drivers push per-square-metre rates above Sydney's metropolitan average:
- Site topography: Many older Castle Hill estates, particularly around Excelsior and Glenhaven fringes, have sloped or cut-and-fill lots that increase engineering, footing and retaining wall costs.
- Premium finishes: A buyer and owner demographic with average incomes above $87,000 (ATO) typically specifies stone benchtops, custom joinery, high-spec glazing and integrated smart-home systems.
- Council compliance: The Hills Shire DCP imposes specific requirements for landscaping, stormwater detention and streetscape compatibility that add design and materials cost versus simpler LGAs.
- Material price volatility: Check current structural steel, timber frame and brick veneer pricing on our material prices index before finalising your budget.
Use our build cost calculator to model your specific project, floor area, storeys, finish level and site difficulty all affect your number.
DA Approvals, The Hills Shire Council
All development applications for Castle Hill are assessed by The Hills Shire Council under its Local Environmental Plan (LEP) and Development Control Plan (DCP). Understanding the approvals environment before you engage builders Castle Hill professionals is essential to project planning.
What commonly slows DA determination in this LGA:
- Incomplete documentation: Missing shadow diagrams, BASIX certificates or inadequate stormwater management plans are the most common triggers for Request for Information (RFI) stops, adding weeks to the clock.
- DCP non-compliance: Castle Hill's established streetscapes mean height, setback and facade articulation controls are actively enforced. Designs that push boundary setbacks or exceed floor space ratios attract objections from neighbours and additional council review.
- Heritage and character overlays: Some 2154 lots near older residential precincts carry character considerations that require additional design justification in knockdown rebuild proposals.
- Dual-occupancy and secondary dwelling proposals: These require careful lot-size and zoning eligibility checks under the Hills Shire LEP before lodgement. An ineligible application wastes council fees and months of time.
Median DA determination time data for The Hills Shire was not available in the current data pack and has been omitted. Set up a free DA alert to monitor how long applications on your street are taking in real time.
Castle Hill: Project Type Comparison
| Project Type | Indicative Cost Range (ABS-based, indicative only) | Typical Approval Pathway | Key Hills Shire Watch-Points |
|---|---|---|---|
| Knockdown Rebuild, Single Dwelling | $500,000-$1,500,000+ | Full DA via The Hills Shire Council | Streetscape compatibility, stormwater detention, BASIX |
| Dual Occupancy | $700,000-$1,800,000+ | Full DA, lot size and zoning eligibility must be confirmed first | LEP minimum lot size, private open space, parking |
| Secondary Dwelling (Granny Flat) | $120,000-$280,000+ | Complying Development Certificate (CDC) if SEPP-compliant; DA if not | 450m² minimum lot, 60m² max floor area, setbacks |
| Major Addition / Second Storey | $200,000-$600,000+ | DA or CDC depending on scope and zone | Height limits, shadow impact, DCP facade controls |
| New Swimming Pool | $50,000-$150,000+ | CDC or DA depending on size and siting | Setbacks, fencing compliance, drainage |
All cost ranges are indicative only, derived from ABS construction cost indices. Obtain fixed-price quotes from licensed builders. Approval pathways are general guidance only, confirm your specific lot's zoning and eligibility with The Hills Shire Council or a qualified town planner before lodging.
Why Castle Hill Demands Builders Who Know the Hills District
Castle Hill is not a homogeneous suburb. Older estates near Excelsior and Glenhaven border areas have irregular blocks, significant gradient changes and ageing infrastructure connections. Newer precincts closer to the Castle Hill town centre and Old Northern Road corridor have tighter DCP controls and higher design scrutiny.
The suburb's significant multicultural community, Castle Hill Public School records an LBOTE proportion of 83% and Castle Hill High School 68% (ACARA, latest available year), means builders and architects who understand multigenerational living layouts, larger communal spaces and flexible room configurations are well-placed to serve the local market. Open-plan ground floors that accommodate extended family gatherings, additional bedroom counts and dual-living configurations are consistently in demand across 2154.
The school catchment premium is real and measurable. With 10 local schools averaging ICSEA 1,124 and two of the state's largest non-government schools, Oakhill College (2,242 students) and Gilroy Catholic College (1,307 students), within the postcode, families actively build or rebuild to lock in catchment access. Builders who understand how to maximise resale-ready floor areas and premium specifications on Hills District lots are a genuine competitive asset for homeowners.
For investors, the combination of a large income-earning population (25,547 individuals, ATO), above-average incomes and structural undersupply of modern stock makes knockdown rebuild a defensible capital-allocation strategy, particularly on larger R2 zoned lots that permit dual-occupancy subject to LEP compliance.
Builders Covering Castle Hill and the Hills District
The builders and architects listed in our directory covering Castle Hill (2154) typically also service Baulkham Hills, Kellyville, West Pennant Hills and Glenhaven, all within The Hills Shire Council footprint and subject to the same LEP and DCP framework. Engaging a professional already active in this LGA reduces DA preparation time and minimises the risk of avoidable RFIs.
Browse the full directory of builders and architects covering Castle Hill →
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