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25 Years
experience
Sustainable Architecture & Urban Design in Sydney
Dunn & Hillam Architects is a collaborative architecture and urban design practice founded on the belief that architecture should be a force for good. With over two decades of experience, we specialize in creating sustainable, community-focused spaces that balance environmental responsibility with functional design. As Australias first certified B-Corp architecture firm, we prioritize sustainability, heritage preservation, and equitable design across public, private, and commercial projects. Our approach integrates history, sustainability, and community needs, delivering buildings and precincts that serve immediate and future generations.

We work closely with clients, stakeholders, and consultants to simplify complex processes, ensuring projects align with shared visions while minimizing environmental impact. Recognized for award-winning work in adaptive reuse, cultural institutions, and sustainable housing, we combine technical expertise with a commitment to social and environmental stewardship. Our team of architects and designers brings diverse experience to projects nationwide, from Sydneys urban centers to remote communities, creating spaces that endure in both function and beauty.
Services
Sustainable Architecture Urban Design Heritage Restoration Cultural Buildings Strategic Planning Adaptive Reuse Public Spaces Residential Design Community Projects Eco-Friendly Construction
Details
  • Year established: 2001
Highlights and features
  • We have over 20 years of experience in sustainable architecture and urban design.
  • Australias first certified B-Corp architecture practice, ensuring ethical and environmental standards.
  • Collaborative approach integrating client vision, community needs, and technical expertise.
  • Award-winning portfolio spanning heritage restoration, cultural institutions, and eco-friendly housing.
  • Specialized in adaptive reuse and low-impact design to reduce environmental footprints.
Associations and certifications
  • B Corp
What people say
Award-winning sustainability Collaborative process Heritage expertise Community-focused design Innovative solutions
Services
Sustainable Architecture
We design buildings that minimize environmental impact through energy-efficient systems, material reuse, and passive design principles. Our approach reduces carbon footprints while enhancing user comfort. Projects include net-zero energy buildings and adaptive reuse of heritage structures.
Heritage Restoration
Our team specializes in revitalizing historic buildings using sensitive, code-compliant methods. We balance modern functionality with original architectural integrity, ensuring cultural and historical value endures for future generations.
Urban Design
We create cohesive, sustainable urban environments through strategic masterplans. Our work integrates public spaces, transportation, and mixed-use developments to foster vibrant, resilient communities across cities and rural areas.
Cultural Buildings
We design museums, galleries, and community hubs that reflect cultural identity and promote accessibility. Our projects prioritize flexible, inspiring spaces that engage diverse audiences and support local heritage.
Residential Design
We craft energy-efficient, aesthetically striking homes tailored to client needs and site contexts. Our designs emphasize natural light, sustainable materials, and seamless indoor-outdoor living for modern, low-impact lifestyles.
People
Lee Hillam
Principal
Lee Hillam co-founded Dunn & Hillam Architects with a focus on sustainable architecture and community-driven design. With over 20 years of experience, he leads projects that merge environmental responsibility with innovative spatial solutions.
Ashley Dunn
Principal
Ashley Dunn co-leads Dunn & Hillam Architects, championing collaborative design processes and B-Corp certification. Her expertise in sustainable systems and stakeholder engagement ensures projects meet rigorous environmental and social standards.
Jonathan Temple
Senior Associate
Jonathan Temple oversees complex urban design projects, integrating strategic planning with ecological sensitivity. His work spans public infrastructure and mixed-use developments, emphasizing long-term community benefits.
Carlos Veas
Architect
Carlos Veas contributes to sustainable residential and cultural projects, focusing on passive design and material efficiency. His technical expertise ensures high-performance buildings that align with client and environmental needs.
Callum Andrews
Architect
Callum Andrews specializes in heritage restoration and adaptive reuse, blending traditional craftsmanship with modern sustainability practices. His work preserves historical value while meeting contemporary functional demands.
Questions
What areas does Dunn & Hillam Architects operate in?
We work across Australia, from Sydney’s urban centers to remote communities, delivering architecture and urban design tailored to diverse environments.
What is B-Corp certification?
B-Corp certification recognizes businesses meeting high social and environmental standards. As Australia’s first B-Corp architecture firm, we prioritize ethical practices and sustainability.
Do you specialize in heritage projects?
Yes, we specialize in heritage restoration and adaptive reuse, preserving historical integrity while integrating modern functionality and sustainability.
How do you ensure sustainable design?
We use energy-efficient systems, passive design, material reuse, and low-impact construction methods to minimize environmental footprints across all projects.
What project types do you handle?
We design cultural institutions, residential buildings, urban masterplans, public spaces, and heritage projects, focusing on sustainability and community needs.
Can you manage complex urban developments?
Yes, our team excels in navigating complex planning, stakeholder engagement, and technical challenges to deliver cohesive urban design solutions.