Grieve Gillett Architects

What Grieve Gillett Architects does

Grieve Gillett Architects (GGA) is a privately held, multidisciplinary architecture, interior design, heritage conservation, and urban design practice headquartered at 243 Pirie Street, Adelaide, South Australia, on Kaurna Land. The firm traces its origins to 1982 as Steve Grieve Architects, was renamed Grieve Gillett Pty Ltd in 2000 when Paul Gillett became a director, and today employs more than 30 professional staff including registered architects, interior designers, architectural graduates, senior technicians, and a dedicated submissions/marketing function. Its work covers an unusually broad sector spread: education, transport and infrastructure (including rail depots, interchanges, and grade separations), health and aged care, correctional and secure facilities, heritage adaptive reuse, hospitality and retail, commercial offices, sports and recreation, cultural and civic buildings, and residential housing ranging from bespoke houses to multi-residential developments.

The practice's service offering spans the full design lifecycle — architecture, interior design, heritage conservation management, urban design and master planning, feasibility studies, sustainable design (ESD), community consultation, and in-house 3D visualisation and animation for government briefings and public consultation. Notable technical differentiators include specialised design expertise for remote APY Lands communities using prefabricated construction methods, correctional facility design incorporating line-of-sight planning and security control systems, and sustainable infrastructure design with stormwater harvesting and sensor-controlled lighting. Project values in the visible portfolio range from approximately A$0.8M (private residential) to A$24M (Ceduna District Health Services and Mawson Lakes Interchange).

Revenue is generated through project-based professional services fees for design, documentation, project management, and contract administration. The firm operates an enterprise/field-sales GTM, winning work via tender submissions, design competitions, expressions of interest, and direct client engagement. Its customer base is dominated by South Australian government departments (Department of Transport, Energy and Infrastructure; SA Department for Correctional Services; City of Port Lincoln; TransAdelaide) and institutional clients (University of South Australia, Prince Alfred College, Yalumba), with smaller exposure to private residential clients. The firm has accumulated repeated AIA (SA) and IES awards between 2006 and 2026 across residential, commercial, educational, sustainable, and lighting design categories.

Name

Grieve Gillett Architects

Legal name

Grieve Gillett Architects

Website

https://www.ggarc.com.au

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

11–50 employees

Short description

Grieve Gillett Architects is an architecture design company that specializes in interior and urban design services.

Ownership category

akta.pro rank

Product category

Architectural Design Services

NAICS

Architectural Services (541310), Architectural Services (54131), Interior Design Services (54141)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

Keywords

• Architectural design services
• Interior design services
• Heritage architecture
• Urban design planning
• Sustainable building design

Headquarters

HQ city

Adelaide

HQ country

Australia

HQ region

Oceania

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Revenue model

1. Architectural Services: Project-based fees for architecture, interior design, heritage conservation, and urban design services. Revenue generated through design fees, documentation, project management, and contract administration on construction projects.
2. Master Planning and Feasibility Studies: Pre-construction services including master planning, feasibility studies, and design consulting for urban, regional and remote projects.
3. 3D Visualisations: Rendering and animation services for project presentations, government briefings, public consultation and website applications.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Grieve Gillett Architects is an Adelaide-based architectural practice delivering integrated architecture, interior design, heritage conservation, and urban design services. The firm serves public and private sector clients across sectors including transport infrastructure, health and aged care, commercial, hospitality, civic, education, and residential housing. It offers end-to-end design services from concept and feasibility through to documentation, BIM modelling, 3D visualisation, and project delivery.

Product overview

Grieve Gillett Architects is a multidisciplinary architecture, interior design, heritage, and urban design practice. The firm operates as a service-based consultancy offering core design services in architecture, interior design, heritage conservation, and urban design. Projects span multiple sectors including education, healthcare, sports and recreation, transport infrastructure, commercial office, hospitality and retail, social justice and secure facilities, cultural and civic, and residential housing. The practice also provides specialized services in sustainable design and community consultation. The company has over 30 professional staff and serves projects in urban, regional, and remote locations across South Australia and beyond.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Full-scope architectural design for new build and refurbishment projects spanning transport infrastructure, health, aged care, commercial, hospitality, civic, education, and residential sectors.
• Interior Design Services Interior design delivered in parallel with architectural projects, addressing space planning, finishes, and fit-out for commercial, hospitality, civic, health, and residential clients.
• Heritage Architecture and Conservation Specialist heritage conservation and adaptive reuse services for historically significant buildings, working with government and institutional clients.
• Urban Design Urban design and master planning services supporting precinct-scale and place-making projects for government, institutional, and developer clients.
• Sustainable (ESD) Design Consulting Environmentally Sustainable Design consulting integrated into projects, targeting energy efficiency, sustainable material selection, and green building outcomes.

Quantifiable outcome

• 40 years of multidisciplinary architectural experience
• +1 more outcomes

Named customers11 records

Segments10 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Lowe + Redding DesigncoreStrategic or Co-development PartnerOngoing collaborative relationship with local architectural practice Lowe + Redding Design, particularly on projects such as Port Lincoln Stadium where they assisted in concept design and 3D modelling.
• Perumal Pedavoli ArchitectsminorStrategic or Co-development PartnerInterstate architectural partnership on Yatala Prison Gatehouse & Sallyport project where GGA provided contract administration for design and documentation produced by Perumal Pedavoli Architects.
• Lowe + Redding DesigncoreStrategic or Co-development PartnerContinued association with Lowe + Redding Design on Matthew Flinders Home refurbishment, with their assistance in concept design and 3D modelling for board presentations.
• Lady Gowrie / Gowrie AdvisersminorStrategic or Co-development PartnerWorking relationship with Lady Gowrie childcare advisers as part of UniSA City West Child Care Centre project team, incorporating Gowrie childcare philosophies into design.
• Thiess, York Civil Joint Venture (TYCJV)minorStrategic or Co-development PartnerGGA provided architectural, urban design and landscaping expertise as part of the Thiess, York Civil Joint Venture team for the Goodwood Junction Rail Grade Separation project.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Hassell: Large Australian architecture and interior design practice with offices across Australia and internationally. Comparable as a multidisciplinary architecture firm serving government, education, transport, and commercial sectors, but at significantly larger scale.
• Woods Bagot: Global Australian-headquartered architecture practice with extensive portfolio in education, transport, hospitality, and urban design. Overlaps with GGA in sectors served but operates at much larger scale internationally.
• Cox Architecture: Major Australian architecture firm with strong portfolio in education, sport, transport, and civic projects. Comparable to GGA in public sector focus and sector breadth, but with national presence and larger project capacity.
• ARM Architecture: Melbourne-based architecture practice with extensive portfolio in cultural, civic, education, and transport infrastructure. Comparable as a multidisciplinary Australian firm serving public and institutional clients across similar sectors.

Direct peers

• John Wardle Architects: Award-winning Australian architecture practice of comparable size focused on residential, commercial, hospitality, and institutional projects. Similar profile in terms of award recognition and sector breadth, though Melbourne-based.
• Jackson Clements Burrows: Mid-sized Australian architecture firm recognized for residential, commercial, and public architecture. Similar size profile and award-winning practice comparable to GGA's multidisciplinary focus.
• Tonkin Zulaikha Greer: Australian heritage architecture and adaptive reuse practice with deep expertise in conservation. Comparable to GGA's heritage architecture service line, with strong award profile in heritage conservation.

Regional players

• Brown Falconer: Adelaide-based architecture practice with comparable South Australian regional focus on healthcare, education, and community projects. Most directly comparable as a fellow Adelaide firm competing for similar local government and institutional work.
• Cheesman Architects: Adelaide-based architecture practice with similar scale and South Australian regional presence, working across residential, commercial, and public sector projects.
• Walter Brooke: Adelaide-based architectural practice comparable to GGA in regional focus, scale, and engagement with South Australian institutional and commercial clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCZcBdnCOghl9ENv7pHB5q8Q
• Facebookfacebook.com/GrieveGillettArchitects
• LinkedInlinkedin.com/company/grieve-gillett-architects
• Instagraminstagram.com/grievegillettarchitects

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Grieve Gillett Architects