Commercial Architect Sydney

What does a commercial architect do?

A commercial architect (in NSW, a Registered Design Practitioner under the Design & Building Practitioners Act 2020) is the lead design professional responsible for translating a commercial brief into a compliant, buildable design that achieves council approval. This is distinct from a fit-out specialist (who works within an existing shell) or a builder (who executes the drawings).

Our work covers:

• Site feasibility and yield analysis — what you can legally build on the land, what the approval pathway looks like, and what the project will realistically cost
• Concept and developed design — floor plans, elevations, sections, massing, materials selection
• Consultant team coordination — structural, hydraulic, fire, access, acoustic, energy (BASIX/NatHERS or Section J)
• DA lodgement via NSW Planning Portal — full documentation package including Statement of Environmental Effects
• RDP sign-off — for Class 2, 3 and 9c buildings, we sign as the Declared Design Practitioner under the DBP Act
• Construction documentation — builder-ready detailed drawings

Commercial project types we coordinate

Mixed-use projects are coordinated across classes under a single DA — e.g., Class 6 retail ground floor with Class 2 apartments above, or Class 5 office above Class 7 parking.

Costs & timeline

Fees typically 5–12% of construction cost, quoted fixed after scope confirmation. Excludes GST, council fees, and consultant fees (structural, fire, hydraulic, traffic, heritage where applicable). RDP declarations for Class 2/3/9c are included where required.

Why choose giantA as your commercial architect

• Registered Design Practitioner (NSW) — full sign-off under the DBP Act for Class 2, 3 and 9c buildings; not just ‘design reviews’
• All NCC classes in-house — Class 5 to 9c design and approval under one roof; no handover delays between specialists
• BASIX / NatHERS / Section J — energy compliance for mixed-use projects handled in-house
• Consultant network — established working relationships with structural, hydraulic, fire and access engineers across NSW
• DA lodgement experience — Parramatta, Blacktown, Liverpool, Canterbury-Bankstown, City of Sydney, North Sydney, Inner West, Woollahra, Waverley councils
• 1,000+ NSW projects over 20+ years, including major commercial retail, office and institutional work

Frequently Asked Questions — Commercial Architects in Sydney

Do I need a commercial architect or just a fit-out specialist for my NSW project?

If you’re building new, changing the building class, altering the structure, adding floor area or changing the facade, you need a commercial architect (RDP). If you’re partitioning an existing compliant tenancy without changing the class or structure, an interior fit-out designer may suffice — but they typically can’t sign off NCC compliance for Class 2, 3 or 9c. When in doubt, the RDP route covers both.

What is a Registered Design Practitioner (RDP) and do I need one?

An RDP is a design professional registered under the NSW Design & Building Practitioners Act 2020 to sign ‘Declared Designs’ for Class 2, 3 and 9c buildings. Registration is mandatory for those classes — the builder can’t obtain a construction certificate without a Declared Design. For other classes (5, 6, 7, 8, 9a, 9b) an RDP isn’t strictly required but indicates a higher standard of professional accountability. giantA is a registered RDP.

How much does a commercial architect cost in Sydney?

Typical range is 5–12% of construction cost for full design-and-documentation services. A $250,000 commercial fit-out commonly runs $12,500–$25,000 in design fees; a $2M mixed-use new build runs $50,000–$120,000. We quote fixed fees after a free feasibility check — no hourly-billing surprises. See the per-type table above.

What approvals does a commercial project need in NSW?

Most commercial projects need a Development Application (DA) via council. Smaller, code-compliant works may qualify for a Complying Development Certificate (CDC) through a private certifier. Class 2, 3 and 9c also need RDP Declared Designs before a Construction Certificate (CC) is issued. Food premises, childcare, medical and liquor-licensed venues have additional sector-specific registrations or approvals that we coordinate alongside the DA.

How long does a commercial DA take in Sydney?

Small-scale commercial (under 500 m² GFA): 6–12 weeks. Medium commercial ($1–5M construction value): 3–6 months. Large or mixed-use: 6–12 months, especially if the project triggers a SEPP, heritage referral or state significant development pathway. Pre-lodgement meetings routinely save 4–8 weeks on assessment.

Does giantA only do the design, or do you handle council lodgement too?

We handle full documentation and lodgement — concept design, consultant coordination, Statement of Environmental Effects, BASIX/Section J, DA lodgement via the NSW Planning Portal, RFI responses, and RDP declarations for regulated classes. We then support you through tender with construction documentation and (optionally) contract administration during construction.