Custom Home Hornsby — Design, Approval & Build Under One Contract
Full design-and-construct service in Hornsby 2077: site assessment, architectural design, Hornsby Shire Council approvals, engineering, construction and handover. One builder, one price.
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MBA NSW0476 300 300Quick Answer
A custom home in Hornsby costs $450,000–$1,200,000+ depending on size and specification. Single storey from $450K, double storey from $650K. Buildana manages design, Hornsby Shire Council approvals and fixed-price construction.
Hornsby Home Builds — Made to Your Brief
Under Hornsby's shopping centre, hospital and rail interchange sits one thing. Sandstone. Bedrock runs beneath the whole suburb, and rock excavation adds $30K to $120K above standard substructure on a typical custom home site, a number that belongs in your budget the day you start looking, not the day the excavator hits refusal. The residential streets around the CBD hold 1960s to 1990s brick veneer on 600 to 900m² blocks at $1.8M to $2.6M.
What you get for managing the rock is the most serviced address in the Shire. Westfield, Hornsby Hospital and the train interchange all walkable, with R2 streets quiet a few hundred metres from all of it. Bedrock also means foundations that never move, which is worth more over thirty years than it costs up front.
What I would check first on a Hornsby block: how deep the sandstone runs, the zoning, and the walk to the interchange. Those set the budget and the value.
We build these to standard, fixed-price, licence HBL 487805C. Get the geotech done early and we will price the build off real data.
Buildana's design-and-construct service covers everything — from initial design brief and land assessment through to council approval and fixed-price construction. One builder, one contract, one point of contact.
Read our Complete Custom Home Guide or explore custom home builds across Sydney.
- Custom homes in Hornsby from $450K
- Designed for your 700–1,200m² typical (Hornsby/Asquith/Pennant Hills/Beecroft/Wahroonga boundary/Cherrybrook); 1–5ha acreage (Galston/Berrilee/Arcadia/Forest Glen/Glenorie/Berowra Heights bushland fringe) block
- Hornsby Shire Council DA and CDC approvals managed
- Hornsby zoned R2 / R3 / R4 mixed (Hornsby CBD)
- Single and double storey designs
- Hawkesbury Sandstone bedrock — engineered slab included
- 6-year structural warranty
- Free consultation — near Hornsby station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Rock is the first budget line
Sandstone bedrock runs beneath the whole of Hornsby, so rock excavation adds $30K to $120K above standard substructure on a typical site. That number belongs in your budget the day you start looking, not the day the excavator hits refusal.
We get the geotech done early and price the build off real data, because a Hornsby number that guesses the rock is a number that hurts.
The most serviced address in the Shire
What you get for managing the rock is location. Westfield, Hornsby Hospital and the train interchange are all walkable, with R2 streets quiet a few hundred metres from all of it, on 600 to 900m² blocks at $1.8M to $2.6M.
Bedrock also means foundations that never move, which over thirty years is worth more than it costs up front. Send us the address and we will get the geotech done and quote off it.
Custom home builder in Hornsby — key facts
- Suburb
- Hornsby, NSW 2077
- Council / LGA
- Hornsby Shire Council (Hornsby Shire)
- Primary zoning
- R2
- Typical lot size
- 700–1,200m² typical (Hornsby/Asquith/Pennant Hills/Beecroft/Wahroonga boundary/Cherrybrook); 1–5ha acreage (Galston/Berrilee/Arcadia/Forest Glen/Glenorie/Berowra Heights bushland fringe)
- Soil class
- Hawkesbury Sandstone bedrock
- Median house price
- $1.8M–$2.6M Hornsby/Asquith/Mount Colah; $2.4M–$3.6M Cherrybrook/Beecroft/Pennant Hills; $3.0M–$8.0M+ Galston/Arcadia acreage
- Home era
- 1900s–1940s Federation heritage
- Typical price range
- $450,000 – $1,200,000+
- Typical timeline
- 12–20 months design to handover
- Approval pathway
- CDC fast-track (15 business days) or DA (40–90 days)
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
How It Works
From First Call to Final Key
Free initial consultation — we discuss your Hornsby build, your brief, your budget, and your block. Hornsby blocks are typically 700–1,200m² typical (Hornsby/Asquith/Pennant Hills/Beecroft/Wahroonga boundary/Cherrybrook); 1–5ha acreage (Galston/Berrilee/Arcadia/Forest Glen/Glenorie/Berowra Heights bushland fringe) with R2 zoning. Honest advice on what's achievable under Hornsby Shire Council's controls.
⏱Design phase covers layout, orientation, and aesthetics for your Hornsby site. We work through room sizes, ceiling heights, storage, and natural light until the plan fits how your family actually lives. 3D renders show the finished result before construction starts.
⏱Construction-grade drawings, not concept sketches. Class Hawkesbury Sandstone bedrock engineered slab and footings, structural frame computations, BASIX 2025 compliance, stormwater connection design, contour survey, and detailed sections through every junction. Approval pack ready for Hornsby Shire Council or private certifier.
⏱We lodge and manage your approval — CDC for eligible designs (10–15 business days) or DA through Hornsby Shire Council if the design sits outside complying development thresholds. CC issued before construction starts.
⏱Build sequence on your Hornsby block: site set-up, slab pour and cure, frame stand and tie-down, roof and lock-up, internal fit-out (plaster, paint, joinery, tiles), kitchen and bathroom installation, final services connection, external works (driveway, fencing, landscaping). Each stage signed off before the next.
⏱Final inspection, Occupation Certificate, 6-year structural warranty, keys, and maintenance guide. Your new home near Westfield Hornsby + Hornsby Hospital + Florence Street.
⏱Quality Promise
Every Buildana custom home in Hornsby is designed for your block and built under a fixed-price contract — no surprises, no hidden extras.
Cost Guide
| Item | Estimated Range |
|---|---|
| Entry-level single storey | $450,000 – $600,000 |
| Mid-range double storey | $700,000 – $950,000 |
| Architectural custom build | $950,000 – $1,400,000 |
| Luxury / high-spec custom | $1,400,000+ |
| Class Hawkesbury Sandstone bedrock slab uplift | $5,000 – $25,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
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Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
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Liverpool, NSW
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Last updated: 1 July 2025
Design & Build in Hornsby
Free consultation for Hornsby 2077. We'll discuss your brief, assess your block, and provide a realistic fixed-price budget.
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Other Buildana services in Hornsby
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Hornsby 2077. Hornsby Shire Council regulations and local controls are covered on each page.