Residential building design project Braybrook, Melbourne western suburbs

Registered building designer for Braybrook and surrounds

Extensions, granny flats, dual occupancy, and new homes. RD Building Design manages design and permits across Maribyrnong.

RD Building Design is a registered building design practice covering Braybrook and Melbourne's wider western suburbs. We manage residential projects from the first conversation through to approved building permit drawings.

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Who is RD Building Design?

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

A registered building design practice based in Melbourne's western suburbs, working across Maribyrnong and neighbouring councils.

We specialise in residential projects: extensions, granny flats, dual occupancy, knockdown rebuilds, and new homes. One designer leads your project from start to finish.

Straightforward communication, realistic timelines, and permit documentation that is right the first time.

Curious about the difference between a building designer and an architect?

Dual occupancy potential in Braybrook

For Braybrook 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.

House extensions on compact Braybrook blocks

On Braybrook's smaller lots, every extension decision has cascading effects. Adding floor area to one side tightens a setback. Going up triggers overlooking provisions. Covering outdoor space reduces the private open space calculation.

Getting these trade-offs right at design stage, rather than discovering them at permit assessment, is what separates a smooth project from an expensive rework. RD Building Design designs extensions on tight sites regularly and understands where the Maribyrnong Planning Scheme gives room to work with.

Development-focused design in Braybrook

Braybrook's investor-active market means many building design projects here are evaluated on return: rental yield, subdivision potential, or resale uplift. RD Building Design understands this lens and designs accordingly.

For dual occupancy, that means maximising yield from each dwelling while meeting planning requirements. For granny flats, it means a self-contained dwelling that commands strong rent from day one.

We provide design and permit documentation that builders can price competitively.

What you can build in Braybrook

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.

Planning overlays

No heritage, flood, or design overlays apply broadly to this suburb. Individual properties should still be checked for site-specific overlays.

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

9km from Melbourne CBD. Nearest station: Tottenham.

This summary reflects general planning conditions for Braybrook 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 Braybrook

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

From first conversation to approved plans

RD Building Design manages the full process.

Consultation. We discuss the project, review your Braybrook property, and outline what is possible. No charge.
Feasibility. Goals tested against site conditions and planning controls. Done before design starts.
Concept. Floor plans and external design showing how the project works on your block. You guide the revisions.
Planning permit (where needed). Full application prepared and managed through Maribyrnong assessment.
Permit drawings. Working drawings for building permit and builder quoting.
Completion. A full set of approved drawings, ready for construction.

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

Building design questions for Braybrook homeowners

Do I need planning approval to renovate in Braybrook?

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 Braybrook 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 Braybrook 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 Braybrook 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 Braybrook 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.

Ready to talk about your Braybrook project?

Book a free consultation and we will review your property, discuss your goals, and give you an honest picture of what is possible.

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