Top 10 Building
in Alexandria, Sydney
TradeRefer lists 5 building businesses in Alexandria with an average Google rating of 4.9★ across 54 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
54 reviews
ABN Checked
ABN-checked
Top 5 Building in Alexandria — Ranked by Rating
Sorted by public Google rating, highest first. All ABN-checked.
Magico Constructions
Ethical, reliable, professional and licensed builders in Sydney. Specialising in architecturally-designed building projects from $1M to $5M.
Mayts Home Renovations & Extensions
Mayts Constructions are your complete Residential Home and Commercial Building Construction & Maintenance specialists. Operating in the Sydney region, we are able to provide a wide range of building solutions for your residential and commercial property needs as well as maintaining and repairing them as required.
Keep Constructions
Keep Constructions is a highly rated building business serving Alexandria and surrounding areas in NSW. With an outstanding 5-star rating from 11 customer reviews, they are one of the top-rated building providers in the area. Contact Keep Constructions today — call +61 412 462 060 or visit their website for a free quote.
Bebel Construction
Discover Bebel Construction, Sydney's premier luxury home builders, dedicated to crafting bespoke homes with precision. Start your dream project today!
Republic Building Co
Republic Building Co is a top-rated building business serving Alexandria, NSW. With a 4.6-star rating from 10 reviews, they are one of the most trusted building providers in the area. Specialising in building and construction for new homes, renovations, and extensions, Republic Building Co delivers quality workmanship and reliable service. Contact them today for a free quote.
How Much Do Building Cost in Alexandria?
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
Alexandria 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 Alexandria
A checklist before hiring any building in Alexandria, 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 Alexandria, 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.
Top Building in Nearby Suburbs
Find ranked building in suburbs close to Alexandria.
Are You a Building in Alexandria?
Get listed on TradeRefer and rank in the top building for Alexandria. Free to join.
List Your Business Free