Residential building design project Delahey, Melbourne western suburbs

Building designer servicing Delahey. Full design and permit service

Residential building design from concept to approved permit. RD Building Design covers Delahey and the western suburbs.

RD Building Design is a registered building designer based in Melbourne's western suburbs. We work across Brimbank and surrounding councils, managing residential projects from initial feasibility through to completed 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 Brimbank 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 design in Delahey

Dual occupancy is realistic for Delahey homeowners with blocks in the right zone and of sufficient size. A two-lot subdivision typically requires a design meeting ResCode requirements, adequate frontage, and landscaping considerations.

The planning process is more involved than for extensions or granny flats, but the outcome, two separately titled properties, is substantially different financially.

RD Building Design carries out dual occupancy feasibility assessments at initial consultation. We review block size, zoning, and planning provisions before any design work, so you know whether the project is viable before committing.

Starting fresh in Delahey

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.

Building design for long-term homeowners in Delahey

Most extension projects in Delahey 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 Delahey

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.

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

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 Delahey 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 Delahey

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 Delahey 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 Delahey homeowners

Do I need planning approval to renovate in Delahey?

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 Delahey 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 Delahey 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 Delahey?

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 Delahey 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 Delahey 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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