Residential building design project Maribyrnong, Melbourne western suburbs

Building designer in Maribyrnong. Registered, western suburbs based

Extensions, dual occupancy, knockdown rebuilds. RD Building Design manages building design in Maribyrnong from brief to permit.

Maribyrnong is 7km from the CBD and one of Melbourne's most active renovation suburbs. Properties here carry real value, and owners who extend or develop thoughtfully see that compound.

RD Building Design is a registered building designer working across the Maribyrnong Planning Scheme. We understand how Maribyrnong applies its rules in practice and manage the full design and permit process in-house.

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About RD Building Design

Rhys Davies Building Designer (DP-AD 43008) Adv.Dip. Building Design (Arch.), Registered Building Practitioner (Arch.) RD Building Design

RD Building Design is a registered building design practice specialising in residential projects across Melbourne's western suburbs. Our work covers Maribyrnong and the surrounding councils.

Every project is led by an experienced building designer from first conversation to permit approval.

For Maribyrnong homeowners: straightforward advice, honest timelines, and permit drawings done properly the first time.

Want to understand the difference between working with a building designer and an architect?

Dual occupancy potential in Maribyrnong

For Maribyrnong properties on lots with adequate size and frontage, dual occupancy can be a genuine option.

The permit pathway is more complex than a standard extension, but the result is two separately titled dwellings on a single block.

RD Building Design assesses dual occupancy feasibility as part of every initial consultation. We confirm whether the numbers work before any design commitment.

Making the most of a Maribyrnong block

Smaller lots in Maribyrnong leave less margin for error. An extension that pushes a setback, triggers overlooking, or reduces private open space beyond what the scheme allows will not get through permit.

RD Building Design resolves these trade-offs at design stage, not at permit assessment. We work on compact inner-west sites regularly and understand how the Maribyrnong Planning Scheme applies to tighter blocks.

Building design for long-term homeowners in Maribyrnong

Most extension projects in Maribyrnong are driven by homeowners who intend to stay. The brief is personal: more space, better light, a layout that suits the household as it is now.

RD Building Design takes that seriously. We design around daily function, not spec appeal. Traffic flow, storage, the way rooms open to the outdoor spaces. The details that matter when you are living with the result.

What you can build in Maribyrnong

Planning controls and development potential under the Maribyrnong Planning Scheme

Council

Maribyrnong

Planning scheme

Maribyrnong Planning Scheme

Predominant zones

GRZ General residential zone

Allows moderate housing growth. Dual occupancy viable on lots of 300sqm+ per resulting title. Medium density development permitted with a planning permit.

NRZ Neighbourhood residential zone

Limits housing growth. Maximum two dwellings per lot in most cases. No apartment-style development. Protects established neighbourhood character.

RGZ Residential growth zone

Encourages higher density development. Apartments and multi-unit developments permitted. Fewer restrictions on building height and dwelling numbers.

Planning overlays

Flood overlay

LSIO and SBO apply to significant areas of Maribyrnong adjacent to the Maribyrnong River, particularly along the river flats and areas affected by the October 2022 flood event. The updated Maribyrnong River Flood Model has expanded flood mapping in this area. Minimum floor levels are mandated and must be incorporated into any new construction near the river corridor.

Typical lot size

Small to medium (typically under 500sqm)

Site coverage is frequently the binding constraint. Extensions and secondary dwellings need careful positioning to stay under the 60% site coverage limit.

Granny flat viability

Permitted up to 60sqm without a planning permit under Victoria's 2023 provisions, but site coverage is likely to be the binding constraint. Many blocks can accommodate a secondary dwelling if existing building footprint allows.

Dual occupancy

Viable on many lots

GRZ or RGZ zoning on a significant proportion of properties. Lots meeting the minimum 300sqm-per-title threshold are common. Planning permit required.

Location

7km from Melbourne CBD. Nearest station: None - bus and tram services.

This summary reflects general planning conditions for Maribyrnong as of 2025. Individual properties may have additional overlays or conditions. A property assessment confirms exactly what applies to your block.

Building design services in Maribyrnong

Whatever your project RD Building design can help.

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

Residential extensions and renovations

Additions that connect and blend with your existing home

Townhouses / Multi-Unit design

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

How building design works with RD Building Design

Here is how a typical project runs.

Initial consultation. We discuss your project, assess your Maribyrnong property's planning situation, and give you a clear picture of what is achievable. No fee.
Brief and feasibility. We assess your goals against the site and planning controls. This happens before design begins.
Concept design. Floor plans, external appearance, and how the project works on the block. You direct revisions.
Planning permit (where required). We prepare, submit, and manage the application through to decision.
Building permit documentation. Full working drawings for permit submission and builder pricing.
Approved drawings. A complete set any registered builder can price from and build to.

RD Building Design serves homeowners across Melbourne's western suburbs and beyond.

Footscray
Maidstone
Moonee Ponds
Ascot Vale
Highpoint

Building design questions for Maribyrnong homeowners

Do I need planning approval to renovate in Maribyrnong?

Many renovations and extensions can proceed on a building permit alone under ResCode. Properties with heritage overlays or in special planning areas will generally need planning approval. RD Building Design determines this at the first consultation.

How long do permits take through Maribyrnong?

A building permit is typically assessed in about 10-20 business days. Planning permits through Maribyrnong generally take around 10-60 days. We set realistic expectations at the start of your project.

Can my Maribyrnong property support a granny flat?

Most NRZ and GRZ properties can add a secondary dwelling up to 60sqm without planning approval since Victoria's 2023 changes. The key constraints are site coverage, setbacks, and open space. RD Building Design confirms what your block allows.

Is my Maribyrnong block big enough for dual occupancy?

Under GRZ in Maribyrnong, dual occupancy typically needs at least 250sqm per resulting lot and appropriate frontage. RD Building Design reviews feasibility at the initial consultation before any design work.

What about adding a second level to my Maribyrnong home?

Second storey additions are viable on most properties, subject to structural capacity and planning requirements for overlooking, overshadowing, and neighbourhood character. We assess all of this at concept stage.

Where do I start if I want to build on my Maribyrnong property?

Start with a property assessment. RD Building Design reviews your block against the Maribyrnong Planning Scheme and provides a clear written summary of what you can build, including extensions, <a href="/backyard-buildings/granny-flats/">granny flats</a>, and dual occupancy potential.

Talk to a building designer who knows Maribyrnong

A free consultation covers your project, your property's planning situation, and an honest assessment of what is achievable. No obligation.

Book a free consultation View our building design services