A Simple Guide to Getting It Right From the Start 
Renovating isn’t just about choosing tiles and paint colours. Behind every smooth, compliant, beautifully executed renovation is a team of consultants working quietly in the background to make sure everything is safe, legal, structurally sound, and buildable.
Most homeowners don’t realise how many specialists are involved – or why they’re needed – until they hit a roadblock. So here’s a clear, builder‑friendly breakdown of the consultants typically required for a renovation, what they do, and when you need them.
- Building Designer or Architect
This is usually your first stop. They help you translate your ideas into a functional, beautiful design.
They’re responsible for:
- Concept design
- Floor plans and elevations
- Material selections (depending on scope)
- Coordinating with other consultants
Tip: This is where Early Builder Involvement is gold – your builder can guide design decisions so they align with budget and buildability.
- Structural Engineer
If you’re removing walls, adding extensions, altering the roof, or touching anything structural, you’ll need an engineer.
They provide:
- Structural design
- Beam and lintel specifications
- Slab or footing design
- Certification for building approval
They’re the ones who make sure your home stays standing.
- Building Certifier
Your certifier ensures your renovation complies with building codes and local regulations.
They handle:
- Building approvals
- Compliance checks
- Inspections at key stages
- Final certification
They’re essentially the gatekeeper between your plans and legal approval to build.
- Surveyor
Not every renovation needs a surveyor, but many do — especially if you’re extending, building close to boundaries, or working with an older home.
They provide:
- Boundary surveys
- Site levels
- Set‑out for construction
This ensures everything is positioned exactly where it should be.
- Town Planner
If your renovation triggers council overlays, zoning issues, or impact assessments, a town planner becomes essential.
They help with:
- Development applications
- Navigating council requirements
- Assessing constraints (flood, bushfire, character overlays)
They’re your guide through the maze of local regulations.
- Energy Assessor (NatHERS / Energy Efficiency)
Most renovations require an energy assessment as part of building approval.
They provide:
- Thermal performance modelling
- Energy efficiency reports
- Recommendations for insulation, glazing, and ventilation
This ensures your home meets minimum energy standards — and often saves you money long‑term.
- Hydraulic / Drainage Engineer
If your renovation affects stormwater, roof drainage, or site runoff, you may need a hydraulic engineer.
They handle:
- Stormwater design
- On‑site detention (if required)
- Drainage solutions for sloping blocks
This is especially important in areas with strict water management rules.
- Soil Tester / Geotechnical Engineer
If you’re adding new footings or extending, soil testing is usually required.
They provide:
- Soil classification
- Foundation recommendations
- Site stability assessments
This ensures your structure is supported by the right footing system.
- Interior Designer (Optional but Powerful)
Not essential for compliance — but incredibly valuable for cohesion, functionality, and finish selections.
They help with:
- Colour palettes
- Joinery design
- Fixtures and finishes
- Space planning
They’re the secret weapon behind a renovation that feels as good as it looks.
So… Do You Need All of These Consultants?
Not always. It depends on:
- The scope of your renovation
- Whether you’re altering structure
- Your local council requirements
- Site constraints
- Budget and design complexity
A good builder will guide you through exactly who you need and when – and coordinate the whole team so you’re not juggling consultants yourself.
The Bottom Line
Renovations run smoothly when the right experts are involved at the right time. Each consultant plays a specific role in ensuring your project is safe, compliant, and buildable – and that the vision you’ve designed can actually be delivered.
If you’re planning a renovation, start with your builder and designer. With the right team around you, the rest falls into place.
Dellwood Constructions specialises in beautifully designed renovations on the Southern Gold Coast. If you’re planning a renovation nearby and have any questions, get in touch.
