Top 10 Building
in Hornsby, Sydney
TradeRefer lists 6 building businesses in Hornsby with an average Google rating of 4.9★ across 154 reviews. The businesses below are ranked from highest to lowest rating — all ABN-checked and community-recommended.
Ranked #2026
By Google Rating
4.9★ Avg Rating
154 reviews
ABN Checked
ABN-checked
Top 6 Building in Hornsby — Ranked by Rating
Sorted by public Google rating, highest first. All ABN-checked.
Binai Construction
Specialising in new construction, alterations & renovations, extensions & alterations and development. Contact Binai Construction today.
Binai Construction
Specialising in new construction, alterations & renovations, extensions & alterations and development. Contact Binai Construction today.
Millers Projects
Contact Millers Projects today to discuss your next project. Open Monday to Friday 6:30am - 5pm. Call us (02) 9477 2712 or email info@millersprojects.com.au
Becchio Building Services - Local Builders in Hornsby
Becchio Building Services - Local Builders in Hornsby is a highly rated building business serving Hornsby Heights and surrounding areas in NSW. With an outstanding 5-star rating from 5 customer reviews, they are one of the top-rated building providers in the area. Contact Becchio Building Services - Local Builders in Hornsby today — call +61 414 862 260 or visit their website for a free quote.
Built To Matter Homes
Explore premium custom homes and renovations in Sydney’s Upper North Shore with Built to Matter Homes. Personalised service, quality craftsmanship, and custom home designs.
Executive Building Group
Executive Building Group are award-winning builders specialising in custom homes, working across Sydney, Newcastle and the Central Coast.
How Much Do Building Cost in Hornsby?
Based on New South Wales industry rates. Always get 2–3 written quotes.
Typical Range
$80–$160
/hr
After-Hours
$240
Emergency callout
Avg Hourly
$120
Hornsby market
Estimates only. Always request a written quote before authorising work.
Building Licensing in New South Wales
In NSW, builders must hold a contractor licence from NSW Fair Trading. Home building work over $20,000 requires home building compensation insurance.
How to Choose the Best Building in Hornsby
A checklist before hiring any building in Hornsby, Sydney.
- 1
Verify their electrical licence is current at your state's electrical safety authority (e.g. Energy Safe Victoria, NSW Fair Trading).
- 2
Confirm they carry public liability insurance of at least $5 million — ask to see the certificate.
- 3
Get 2–3 written quotes for any job over $500. A written quote protects both parties and clarifies the full scope.
- 4
Check their Google and TradeRefer ratings — look for consistent reviews mentioning punctuality, clean workmanship, and clear communication.
- 5
Ask whether they'll provide a Certificate of Compliance (electrical safety certificate) on completion, as required by law in most states.
FAQs — Building in Hornsby, Sydney
How much does a home extension cost in Australia?
A single-storey extension typically costs $2,000–$3,500 per m². A 40m² addition runs $80,000–$140,000 including structural work, roofing, cladding, and fit-out. Two-storey additions cost more due to engineering and structural complexity. Always get a fixed-price contract rather than a cost-plus arrangement.
Do I need council approval for a home extension?
Yes in most cases. Extensions that change the building's footprint, height, or floor area require a building permit and often a planning permit. Some minor works fall under 'exempt development' thresholds — these vary by state and council. Your builder or building designer can advise what approvals apply to your project.
What is the difference between a builder and an architect?
An architect designs the building and may project-manage, but doesn't do physical construction. A builder constructs the project to approved plans. A building designer (draftsperson) produces plans without an architect's full qualification. For most residential projects, a building designer plus licensed builder is sufficient and more cost-effective.
How long does a granny flat take to build in Australia?
A standard prefabricated or modular granny flat takes 12–20 weeks from approval to completion. Traditionally-built granny flats take 16–26 weeks. The approval process (council or CDC) takes 4–10 weeks before construction can begin. Total time from concept to move-in is typically 6–12 months.
What should a building contract include?
A compliant building contract must include: fixed price or schedule of rates, scope of works, start and completion dates, progress payment schedule, insurance details, the builder's licence number, variation process, and dispute resolution procedure. Never pay more than 10% deposit in most states.
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