Residential building design project Keilor Lodge, Melbourne western suburbs

Building design and permits for Keilor Lodge properties

RD Building Design is a western suburbs building designer covering Brimbank and neighbouring councils.

Whether you are extending, adding a secondary dwelling, or building new, RD Building Design manages the full design and permit process. We are a registered building design practice based in Melbourne's west, working across Brimbank.

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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 Brimbank and the surrounding councils.

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

For Keilor Lodge 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 Keilor Lodge

For Keilor Lodge 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.

Starting fresh in Keilor Lodge

Sometimes extending is not the right answer. When the existing house is past its useful life or the renovation cost would exceed the value it adds, a knockdown rebuild lets you design a home purpose-built for your site and your household.

A new design can take full advantage of the site capacity permitted under the Brimbank Planning Scheme, with no inherited compromises from the previous layout.

RD Building Design manages knockdown rebuild projects from initial feasibility through to building permit documentation.

Extensions designed for how you live

In Keilor Lodge, where most homeowners stay long-term, extensions are about solving a genuine problem: the kitchen that doesn't work for a growing family, the lack of a second living space, or a master bedroom that was fine for two.

Design quality matters more when you are living with the result for years. RD Building Design designs extensions around how a household actually functions: traffic flow, light, storage, and the relationship between indoor and outdoor space.

What you can build in Keilor Lodge

Planning controls and development potential under the Brimbank Planning Scheme

Council

Brimbank

Planning scheme

Brimbank 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.

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

Medium to large (typically 500-800sqm+)

More design flexibility. Site coverage is rarely the binding constraint, allowing larger secondary dwellings and more generous setbacks.

Granny flat viability

Permitted up to 60sqm without a planning permit under Victoria's 2023 provisions. Most blocks have sufficient site coverage capacity for a well-sized secondary dwelling.

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

21km from Melbourne CBD. Nearest station: Watergardens.

This summary reflects general planning conditions for Keilor Lodge 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 Keilor Lodge

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 Keilor Lodge 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.

Building design questions for Keilor Lodge homeowners

Do I need planning approval to renovate in Keilor Lodge?

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 Brimbank?

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

Can my Keilor Lodge 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 Keilor Lodge block big enough for dual occupancy?

Under GRZ in Brimbank, 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.

Should I renovate or knockdown rebuild in Keilor Lodge?

It depends on the condition of the existing house and the cost-benefit of renovation versus starting fresh. For non-heritage properties, knockdown rebuild is usually an option. RD Building Design can advise on which path suits your situation.

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

Start with a property assessment. RD Building Design reviews your block against the Brimbank 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 Keilor Lodge 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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