Building Designer in Shellharbour
Serving clients from Illawarra through the South Coast down to Bateman’s Bay
Design Experts
Shellharbour Builder
If you're a homeowner or first-time developer in Shellharbour wondering whether your block could support a duplex or dual occupancy, you're not alone and you don't need to have all the answers before reaching out. At Gracia Building Design, we help everyday property owners across Shellharbour understand what their land could achieve before they commit to buying, designing or lodging approvals.
We know Shellharbour City Council's planning requirements inside out, which means we can give you practical, grounded advice from the very first conversation, not just once the design process is already underway. The most valuable thing we can do for you early on is a feasibility assessment. It helps you understand whether a duplex, dual occupancy or multi-dwelling development is actually achievable on your site, which approval pathway suits your project and whether the numbers are likely to stack up before you spend money finding out the hard way.
When you're ready to take the next step, we're here to guide you through concept design, documentation and CDC or DA approval. Call (02) 4415 9445 or email info@graciabuildingdesign.com to start the conversation.
Book a Feasibility Consultation
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What we do
Our Drafting & Design Services
Duplex Design
We design functional and attractive duplex homes for families and developers, maximising space, value and lifestyle while simplifying the CDC or DA process.
Multi-Dwellings
We combine function with flair to create multi-dwelling designs that are efficient, cohesive and visually striking.
Dual Occupancy
Two dwellings, one smart decision. We help you explore whether your block is suitable for a dual occupancy and guide you confidently through design and approvals.
Feasibility Studies
Not sure if your site stacks up? A feasibility assessment gives you clear, practical answers before you spend money on plans, consultants or the wrong property altogether.
DA & CDC Approval
The approval pathway you choose shapes your entire project. We help you navigate both
DA and CDC processes from day one, saving you redesigns, delays and unexpected costs.
Built For You
Local Designs That Deliver
Shellharbour's planning landscape has its own rules, rhythm and nuances and understanding them early can make a significant difference to what you're able to achieve on your site. Whether you're looking at a duplex on an established block, a dual occupancy for rental income or intergenerational living, or a small multi-dwelling development in one of Shellharbour's newer growth areas, we tailor our approach to suit your specific site and goals.
Our team has a strong knowledge of the Shellharbour area, which means fewer surprises and a smoother road from concept to approval. One of the most common mistakes we see is clients waiting until they've already committed to a property, a designer, or a concept before seeking advice. By that point, the options can be limited and the cost of changing direction is real.
Coming to us early means you get a clearer picture of your site's opportunities and constraints while you still have the flexibility to act on them. A feasibility assessment at the start of the process costs far less than a redesign, a rejected application or the wrong property purchase down the track.
Need Help?
Frequently Asked Questions
What does a building designer do?
A building designer plans and prepares the drawings and documentation required for residential and commercial construction. This includes site layout, floor plans, elevations and technical detailing that comply with building codes and local council requirements. Building designers focus on functionality, aesthetics, sustainability and cost-efficiency — often collaborating with engineers, surveyors and town planners during the process.
Do I need council approval for building design?
Yes, most new homes, duplexes and renovations require approval before construction can begin. This usually involves either a Development Application (DA) through the local council or a Complying Development Certificate (CDC), which is a faster, private certification process. The right option depends on your zoning, lot size and design. A professional designer will help determine the best pathway for your project.
How long does the design and drafting process take?
The timeframe can vary depending on the project’s complexity, the number of revisions and council requirements. A basic design and drafting project may take 2–4 weeks, while more complex designs (such as duplexes or dual occupancies) may take 4–8 weeks or more. Council approval times are separate and can range from a few weeks to several months. Clear communication and planning help speed things up.
