Extending the life of existing structures while supporting their ongoing use.
Our Integrated Services
Consultation, collaboration, integration and innovation.
Every heritage structure carries a story. The materials, the craftsmanship, the decisions made by the people who built it, all of it embedded in fabric that, once lost, cannot be recovered. Our Heritage Engineers understand that responsibility better than most. They work at the intersection of history, conservation science and structural engineering, bringing the technical depth needed to protect what matters while enabling structures to serve the communities around them for generations to come.
This is a discipline that demands a rare combination of skills. Our people are fluent in historical construction methods and materials including sandstone, wrought iron, faience, timber, reinforced concrete, as well as the latest diagnostic technologies and high-performance repair systems. That breadth is what allows them to make the right call: when to conserve, when to adapt, and how to do either without compromising the integrity of what exists.
Heritage structures sit at the heart of communities. They are landmarks, places of gathering, carriers of cultural identity. When our engineers work on them, they are not just solving a structural problem, they are supporting a community hold onto something irreplaceable.
We work at the intersection of history, conservation science and structural engineering to protect what matters and keep it standing for generations to come.
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How we work
We provide strategic advice that balances conservation of heritage materials, structure and functionality, whilst employing the latest technology and high-performance materials to increase longevity and lower maintenance costs. Our team works closely with clients, conservation architects, authorities and community stakeholders, navigating the approvals, the sensitivities and the technical complexity that heritage projects invariably involve.
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What we deliver
Specialist heritage engineering across inspections, conservation, remediation and adaptive reuse:
Inspections and Reports
- Dilapidation Reports
- Condition Assessment
- Due Diligence
- Feasibility Reports
- Heritage Structural Reports
- Statements of Heritage Impact
- Structural Management Plans
- Maintenance Work Plans
- Peer Reviews
- Land and Environment Court Expert Witness
Waterproofing- Rising and falling damp
- Flashings and capping
- Gutters and downpipes
- Roof membranes
Façade and Windows- 19th and 20th century construction
- Materials: sandstone, brick, faience, reinforced concrete, wrought iron, cast iron, steel and timber
- Window frames assessment: steel, cast iron, bronze and timber
- Façade retention, remediation and repairs
- Glazing upgrades of heritage windows to satisfy acoustic or ESD requirements or full window replacement and replication
Structures- Diagnostic engineering
- Structural strengthening
- Seismic strengthening
- Adaptive reuse
- Alterations and additions to heritage structures
- Protection

Our Expertise
Offering a full-service solution means we can bring a team of specialist Structural, Civil, Traffic, Façade, Construction, Heritage, Digital and Applied Science Engineering services to any project where needed.
Our large, technically skilled resource base will guarantee you the certainty of delivery across the lifecycle of the project. We take pride in providing added value to our clients, and through our multidisciplinary skill base, we are able to draw on specialist input at appropriate stages to create solutions that bring your project vision to life.
Structural Engineering
Ambitious ideas transformed into refined, enduring structures through collaborative, high‑calibre engineering.
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Civil Engineering
Close collaboration and grounded expertise create civil outcomes that work for communities and clients
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Façade Engineering
Architectural ambitions become buildable façades through thoughtful partnership and technical insight.
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Traffic Engineering
Smarter movement is created through close collaboration, clear planning and solutions shaped around real journeys.
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Construction Engineering
Complex construction challenges are simplified through practical insight, sharp sequencing and our experts
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Digital Engineering
Advanced digital intelligence unlocks seamless coordination, sharper decisions and elevated performance across every stage.
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Applied Science
Enablement through advanced simulation and computational design.
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Applied Sustainability
Sustainability expertise seamlessly integrated to reduce carbon, improve performance and enhance long‑term value.
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TTW takes pride in providing added value to our clients through our multidisciplinary skill base.
