Residential building design project Sunshine, Melbourne western suburbs

Building designer servicing Sunshine. Full design and permit service

Residential building design from concept to approved permit. RD Building Design covers Sunshine 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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Working with 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 practice covering Brimbank and Melbourne's wider western suburbs. We work exclusively on residential projects.

Your project is led by an experienced building designer throughout. No hand-offs, no junior staff running the detail.

For Sunshine homeowners, that means clear advice, honest timelines, and permit drawings that do the job first time.

Building designer vs architect? Here is what the difference means for your project.

Designing within heritage overlays in Sunshine

Heritage overlays don't prevent development. They shape how it's done. Extensions and new structures in heritage areas can proceed with planning permission, provided the design demonstrates appropriate consideration of the heritage context.

This doesn't mean imitation. A contemporary extension to a heritage-listed home can be clearly of its time while respecting the character and scale of the original. Brimbank's heritage guidelines require thoughtful design, not pastiche.

RD Building Design has experience to identify and interpret the heritage framework of the Brimbank Planning Scheme and can advise early on what assessment is required for your property.

Dual occupancy potential in Sunshine

For Sunshine 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 Sunshine blocks

On Sunshine'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 Brimbank Planning Scheme gives room to work with.

What you can build in Sunshine

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.

RGZ Residential growth zone

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

MUZ Mixed use zone

Allows residential and commercial uses. Higher density development generally supported. Broader range of building types permitted.

Planning overlays

Heritage overlay

Heritage overlays apply to selected precincts around the Sunshine town centre and older residential areas. Brimbank Council requires heritage assessment for works in affected areas.

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

12km from Melbourne CBD. Nearest station: Sunshine.

This summary reflects general planning conditions for Sunshine 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 Sunshine

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 Sunshine 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 Brimbank 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 Sunshine homeowners

Will I need a planning permit to extend in Sunshine?

That depends on the scope of the work and any overlays on your property. Many standard extensions go straight to building permit. Heritage or design overlay areas typically need planning approval first. We check this at your initial consultation.

What is the typical permit timeline in Sunshine?

Building permits are usually assessed in around 10-20 business days. If a planning permit is needed, Brimbank generally takes about 10-60 days. RD Building Design provides realistic timelines at the outset of every project.

Is a granny flat possible on my Sunshine block?

Under Victoria's 2023 reforms, a secondary dwelling up to 60sqm can be built on most NRZ and GRZ lots without a planning permit, provided site coverage, setback, and open space requirements are met. We assess this as part of an initial consultation.

Can I subdivide my Sunshine property for dual occupancy?

Dual occupancy requires adequate lot size, and sufficient frontage. RD Building Design assesses feasibility at the initial consultation stage.

How does heritage affect my extension in Sunshine?

Heritage overlays shape the design approach but do not prevent extensions. RD Building Design works within Brimbank's heritage provisions and can advise on what approvals are needed for your property.

Can I add a second storey in Sunshine?

Usually, yes. The main considerations are the existing structure's load capacity and planning controls around overlooking, overshadowing, and character. RD Building Design checks both at concept stage.

How can I find out what is buildable on my Sunshine property?

A property assessment from RD Building Design reviews your block against the Brimbank Planning Scheme and provides a written summary of development potential, including extension capacity, granny flat viability, and dual occupancy options.

Ready to talk about your Sunshine 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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