Home extensions and renovation design. More from the home you already have

Building designer for extensions and renovations across Melbourne's western suburbs

You are on the right street, on a great block. The home you really want to live in is there in potential. We design it into reality, starting from how you want the space to work. How you want it to feel when you walk through it every day. Working through to a complete set of build-ready plans.

Past projects About RD Building Design

Adding space or reworking what's there

Most Melbourne homes have more potential than their current footprint suggests. A rear extension or second storey addition gives you the space your household has outgrown without having to move away from the area you love. A full renovation reworks how rooms connect and how the house feels to live in day to day. The right answer depends on your block and what your home is actually missing. We work through that with you before anything is drawn.

What a building designer does for your project

We produce floor plans, elevations, construction documents, and specifications for permit applications and fixed-price builder quotes. We manage prepare permit and building permit documentation. You finish with a complete document set a licensed builder can work from to create your perfect living space.

Extension being added to existing house by builders

Home extension design for Melbourne's western suburbs

A single storey extension solves a different problem to a second storey addition, and each carries its own design and planning requirements. We know the local overlay conditions, the approval process, and what councils want to see in a submission. Our extension plans give your builder everything needed to price accurately.

Home renovation design that starts with how you live

Kitchen and bathroom renovations can be the most technically complex to document and approve. Add structural changes and you will certainly a building permit. Getting the design right before anyone picks up a tool is what keeps the budget honest and the approvals moving. We work across kitchen and bathroom renovations, whole-house projects, and heritage property approvals.

What does an extension or renovation cost

Bathroom renovation costs in Melbourne typically start around $25,000 for a quality result. Kitchen renovation costs often begin from $30,000 upward for a full reconfiguration. A full home renovation covering structural changes ranges from $200,000 upward. What narrows those figures to a number your builder can commit to is a properly documented drawing set. Our design and documentation fees are quoted in writing before you commit to anything.

Every project starts with a brief

RD Building Design works across the full range of residential projects, from a single new home to a multi-dwelling site. Whatever the starting point, the process is the same: understand what you want to achieve, work out what the site will support, and produce the documentation that gets it built.

New home design

Custom home design from initial brief through to permit-ready documents

Knockdown rebuild designs

A completely new design on your existing block, built around the life you want

Townhouses / Multi-Unit design

Multiple dwellings on one site, with all planning and documentation managed

Contact RD Building Design about your new home

Talk to us before you commit to anything

If you are thinking seriously about extending or renovating, the most useful thing you can do right now is have a conversation about your home. We will look at what you have, talk through what you want, and give you a clear picture of what is possible, what the permit pathway looks like, and what the work will realistically involve.

No pressure, no obligation. Most people leave knowing exactly what their next step is.

Get in touch