ABC Builders — Melbourne

Home Extensions & Additions

Expand your living space without the upheaval of moving. Expert extension builders serving Melbourne’s residential market.

Address

Unit 8, 77 Lonsdale Street, Melbourne VIC 3000, Australia

Work Hours

Mon-Fri 08:00 AM - 05:00 PM

Phone

+61 8191 8765 9900

Make more of the home you already love

Moving house is stressful and expensive — sometimes the smarter move is to build out rather than move out.

ABC Builders specialises in home extensions and additions that seamlessly integrate with your existing home, delivering more space, more light, and more value. Whether you’re adding a ground-floor living area, a second storey, or a new master suite, we manage the entire process from design and permits through to handover.

We’ve worked on homes across Melbourne’s inner suburbs, middle ring, and outer growth corridors, and we understand the nuances of building on established sites.

We build extensions for:

What sets ABC Builders apart

We’ve built our reputation one project at a time, earning repeat business and referrals from clients who appreciated how we handled their home as if it were our own. As a registered building practitioner with the VBA, we carry all required licences and domestic building insurance — so you’re protected every step of the way.

VBA registered builder

Fully licensed with domestic building insurance on every residential project.

In-house trades

We coordinate all trades under one roof — no juggling multiple contractors.

Clear communication

You'll always know where your project stands — no surprises, no silence.

From first conversation to final handover

Our process is designed to take the stress out of building. Here’s how a typical extension project unfolds.

1. Initial consultation

We meet on-site, discuss your goals and budget, and give you an honest assessment of what's achievable. No obligation, no pressure.

2. Design & Documentation

We work with architects and designers to develop plans that meet your brief, your council's requirements, and the existing character of your home.

3. Permits & Approvals

We handle the planning and building permit process on your behalf, liaising with council and certifiers to keep things moving.

4. Construction

Our experienced team gets to work with minimal disruption to your household. We keep the site clean, safe, and secure throughout the build.

5. Handover & Defects Period

We walk you through the finished work, address any final items, and remain available during the statutory defects liability period for complete peace of mind.

Start your Melbourne extension today

Book a free on-site consultation and let’s talk about what’s possible for your home.

FAQs about home extensions in Melbourne

Do I need a planning permit to extend my home in Melbourne?

It depends on the size and nature of the work, your property’s zoning, and any overlays that apply — such as a Heritage Overlay or Neighbourhood Character Overlay. Many standard rear extensions fall under exempt or compliant development and only require a building permit. ABC Builders will assess your property upfront and handle all permit applications on your behalf.

How long does a home extension take to build?

A ground-floor extension typically takes 10 to 16 weeks from the start of construction, depending on scope and complexity. Second storey additions can take 16 to 24 weeks. Factor in an additional 8 to 16 weeks prior to construction for design, documentation, and permits. We’ll provide a detailed programme at the start of your project so you can plan accordingly.

Can I live at home during the extension build?

In most cases, yes. We work with homeowners to minimise disruption and maintain access to key areas of the home wherever possible. For larger or more complex builds — particularly second storey additions — there may be periods where temporary relocation is more practical. We’ll be upfront about this during the planning stage.

What is domestic building insurance and do I need it?

Domestic building insurance (DBI) is a mandatory form of consumer protection in Victoria for residential building work over $16,000. It protects homeowners if a builder becomes insolvent, dies, or disappears before completing the work. As a registered building practitioner, ABC Builders holds all required DBI — you’ll receive a certificate of insurance before any work begins.