Many homeowners use these terms interchangeably, but there are meaningful differences in qualifications, scope, and the value each professional delivers. The right choice depends on your project type — and choosing wrong can cost you more than you save.
This guide covers the full range of project types: new builds, extensions, commercial work, multi-residential, and more. If you’re specifically planning a renovation, see the more focused companion article: Building Designer or Draftsman for Renovations?
A draftsman (or drafter) produces technical drawings. You tell them what you want — lay out the rooms like this, add a room here, move this wall — and they draw it up in a format that can be submitted for approval. They translate your decisions into documentation.
A building designer does the above, and then considerably more. They bring design thinking: spatial planning, how rooms relate to each other and to the site, natural light, cross-ventilation, material selection, energy performance. They identify problems before construction begins. They coordinate engineers, certifiers, and council. They take professional responsibility — legally — for the design they produce.
In Queensland, anyone independently providing building design services must hold a QBCC licence. This makes the practical distinction clearer: a licensed building designer takes design responsibility and carries professional indemnity insurance. A draftsman without a QBCC licence can only produce drawings — they cannot take responsibility for the design, and you have limited recourse if something goes wrong.
For a broader comparison that also covers architects, see our guide on building designer vs architect.
Not all building designers are licensed for the same scope of work. The QBCC has specific licence classes that define what each professional can design:
| Licence Class | Scope | Typical Projects |
|---|---|---|
| Building Designer — Open | Any class of building, no monetary or height limit | Custom homes, commercial, multi-residential, industrial |
| Building Designer — Medium Rise | Buildings up to 3 storeys, Class 1–2 and some Class 5–9 | Most residential, small commercial |
| Building Designer — Low Rise | Single and two-storey residential (Class 1 and 10) | Houses, granny flats, garages, sheds |
| Architectural Draftsperson | Preparation of drawings — not independent design services | Documentation support under a licensed designer or architect |
When you’re engaging someone for a substantial project, confirm their licence class covers your scope. A Low Rise licence is not sufficient for a duplex or a commercial fitout. Check the QBCC register by name or licence number — takes two minutes and tells you exactly what they’re licensed to do.
Building designer. Every time. A new home involves site analysis, orientation decisions, energy compliance, structural coordination, council approval management, and a hundred design decisions that require professional judgement. A draftsman can draw what you tell them — but who’s going to tell you whether the living area should face north or east? Who’s going to catch the drainage problem created by the proposed slab level before the slab is poured? That’s building design work, not drafting.
Building designer, for anything beyond a simple room. Extensions involve structural load paths through the existing building, connections between old and new construction, energy compliance for the new work, and often council overlays. A second storey addition in particular has significant structural implications for the ground floor walls and footings — this needs professional design input, not just documentation.
Depends on the site. A straightforward granny flat on a flat lot with no overlays, using a pre-approved design, might be handled adequately by a draftsman. But most Gold Coast properties have at least one complexity — a flood overlay, an easement, boundary setback constraints, or access requirements — that benefits from a building designer’s involvement. A designer will also make the most of the allowable footprint, which matters when you’re trying to maximise the rental return on a limited site. See our granny flat guide for the full picture.
Building designer. A duplex is a multi-dwelling development that almost always requires a Development Application under the Gold Coast City Plan. DA lodgements require professional design documentation and often a planning report. The structural complexity of a shared wall construction, party wall fire ratings, and dual title considerations all require design expertise well beyond basic drafting. See our duplex guide.
This is where a draftsman may genuinely be sufficient — if the renovation is purely cosmetic or involves only minor internal changes with no structural implications, no change to the building envelope, and no council overlay complications. Kitchen and bathroom renovations that don’t move walls, carpet and flooring changes, repainting — these don’t need a designer at all. Once you start moving walls, changing wet area layouts, or altering the building envelope, you need at minimum a certifier’s guidance and more likely a building designer.
Building designer. Removing load-bearing walls, opening up the back of a home, adding a covered outdoor area — these projects require structural engineering coordination, often a building approval, and design thinking about how the changes affect the whole building. The most common Gold Coast renovation (opening up the back of a 1980s brick home) involves structural challenges that a draftsman is not equipped to resolve. See our detailed renovation design service page.
Building designer (Open or Medium Rise licence, depending on building class). Commercial work involves different NCC classifications, specific accessibility requirements under the Disability Discrimination Act, different fire safety rules, and often more complex approval pathways. Draftsmen are not typically qualified for commercial design work.
Depends on size and site. A simple complying carport on a standard lot can often be handled by a draftsman, or even certified through a pre-approved kit-home process. A large shed with a mezzanine, or a carport that doesn’t comply with standard setbacks and needs a Development Application, needs building designer involvement.
Building designer with Open or Medium Rise licence. Multi-residential development involves complex planning assessment, shared infrastructure, acoustic requirements, accessibility compliance, and fire safety design that requires an experienced designer. This is not drafting territory.
| Building Designer | Draftsman | |
|---|---|---|
| QBCC Licence | Required (Open, Medium Rise, or Low Rise) | Not always required; Architectural Draftsperson licence optional |
| Professional indemnity insurance | Required with QBCC licence | Not required (may not carry it) |
| Design responsibility | Takes legal responsibility for the design | Documents your decisions; no design liability |
| Design input | Spatial planning, orientation, light, ventilation, materials, energy | Draws what you specify |
| Council coordination | Manages overlays, DA/BA pathways, compliance strategy | Prepares drawings; you handle council |
| Engineer coordination | Coordinates structural, civil, geotechnical inputs | Generally not — you coordinate separately |
| New homes | Yes | Not recommended |
| Structural renovations | Yes | Not recommended |
| Commercial/multi-res | Yes (Open/Medium Rise licence) | No |
| Simple minor works | Yes (may be more than needed) | May be sufficient |
| Typical cost range | $3,000–$18,000+ depending on project scope | $1,500–$4,000 for documentation only |
| Service | Typical Cost | What You Get |
|---|---|---|
| Drafting only | $1,500–$4,000 | Working drawings from concepts you provide |
| Building design — small project | $3,000–$6,000 | Design development, documentation, approval coordination |
| Building design — full custom home | $8,000–$18,000+ | Full service from concept to construction documentation |
For detailed fee information, see our guide on building designer costs.
The upfront saving from using a draftsman on a project that needs a designer is often illusory. Plans that aren’t approved, designs that don’t account for structural realities, or documentation that builders can’t price accurately all add cost during construction — where changes are measured in thousands, not hundreds.
Here’s what happens when you use a draftsman for a project that needed a building designer:
Understanding what a licensed builder knows that a draftsman doesn’t helps explain why construction experience in the design phase prevents costly problems on site.
Go to the QBCC website (qbcc.qld.gov.au) and search the licence register by name or licence number. Confirm the licence class (Building Design — Open, Medium Rise, or Low Rise), that the status is “Current,” and that the licence is held in the name of the person or company you’re engaging. Don’t take anyone’s word for it — check it yourself. For more on choosing the right professional, see our guide on how to choose a building designer.
At Design Science, David Steadman holds both a QBCC Building Designer licence and an Open Builder’s licence. Less than 1% of professionals nationally hold both. That dual qualification means your design is produced by someone who has actually built what he draws — who understands construction sequences, what specifications a builder needs to price accurately, and where designs fail in practice.
The result is construction-ready documentation: plans detailed enough for accurate builder pricing, designs that anticipate construction challenges, and specifications that reflect real-world buildability. That’s the difference between design that looks good on paper and design that works on site. You can learn more about the team and our approach on the About Design Science page.
Some builders offer design-and-build packages where they include a designer or draftsman in their team. The design is done by a licensed professional engaged by the builder. This can be convenient but means you don’t own the plans independently — if you change builders, you typically can’t take the plans with you. An independent building designer works for you, not the builder.
Your sketches and concepts are valuable as a design brief — and a good building designer will want to see them. But a QBCC-licensed designer must take professional responsibility for the design and all documentation submitted for approval. You can absolutely drive the brief; the designer translates your vision into compliant, buildable plans.
Minimum qualification for a building design draftsperson is a Certificate IV in Building Design Drafting. For anyone independently providing design services in Queensland, a QBCC licence is required — making them effectively a building designer, not just a draftsman. Always check the QBCC register before engaging anyone to prepare your plans.
No, though there’s significant overlap in services. An architect holds registration with the Board of Architects of Queensland and has completed a university architecture degree. A building designer holds a QBCC licence, which can be achieved through diploma pathways, degrees, or demonstrated industry experience. For most residential projects on the Gold Coast, a building designer provides equivalent practical design services — often at a lower fee. See our full comparison in the building designer vs architect guide.
Yes, and it happens fairly often. If you’ve started with a draftsman and realised the project needs more design input, a building designer can take over — but the earlier the better. Reworking partially completed drawings adds cost. If you’re uncertain which professional you need, have the initial conversation with a building designer. A good one will tell you honestly if a draftsman would serve your project adequately.
For most Gold Coast projects — new homes, structural renovations, extensions, duplexes, commercial work — you need a QBCC-licensed building designer. The term “draftsman” is used colloquially, but the professional who takes legal responsibility for your design, coordinates consultants, manages council, and produces construction-ready documentation is a building designer. Use a draftsman for genuinely simple, low-risk documentation tasks only — and confirm their QBCC licence status before you engage anyone.
For a full overview of our drafting and building design services, visit our Gold Coast draftsman page.
Design Science holds QBCC licences in both Building Design and Building — the dual qualification that makes our designs both architecturally considered and practically buildable. Visit our About page to learn more. Book a $280 consultation to discuss your project.
David Steadman
Licensed Builder & Building Designer
David Steadman is the founder of Design Science, a Gold Coast building design practice backed by over 30 years of hands-on construction experience. One of few Australians holding both a QBCC Builder's Licence and Building Designer licence, David brings a rare combination of design thinking and practical building knowledge to every project.
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