Business Details
50+ Years
experience
Your Trusted Building Services Partner
Established in 1962, we are a multidisciplinary engineering consultancy with a rich heritage in building services, performance, and low-carbon design. Our team of 40 specialists operates from offices in Newcastle, Stockton-on-Tees, Leeds, London, and Stevenage, delivering projects across healthcare, education, heritage, and commercial sectors. As a private limited liability partnership, our directors remain directly involved in every project, ensuring a client-centric approach rooted in technical excellence and innovation.We prioritise collaboration, accountability, and sustainability, aligning with evolving legislation and technology to future-proof the built environment. Our expertise in BIM, heritage conservation, and decarbonisation has earned recognition from industry bodies and repeat clients nationwide. With a vision to become the UKs most respected integrated building services firm, we combine six decades of experience with cutting-edge digital tools to create efficient, sustainable spaces that enhance human well-being.
Services
Building Services Engineering
Building Performance
BIM Solutions
Specialist Lighting
Decarbonisation
Heritage Refurbishment
MEP Design
Thermal Modelling
Smart Metering
Passive House Design
Details
- Year established: 1962
Highlights and features
- We have 60+ years of experience in building services engineering
- Our team includes certified BIM Level 2 experts
- Specialists in Grade I/II listed building refurbishments
- ISO 9001 and ISO 14001 quality/environmental accreditations
- CIBSE-accredited low-carbon consultants and energy assessors
Associations and certifications
- CIBSE
- Elmhurst Energy
- BREEAM
- Passive House Institute
- Fitwel
- BUS Methodology
- ISO 9001:2015
- ISO 14001:2015
What people say
Excellent proposal
Exceptional service
Proactive approach
Professional and respectful
Dedicated to clients
Services
Building Services Engineering
We deliver mechanical, electrical, and plumbing systems for new builds and refurbishments. Our engineers create efficient, compliant solutions for healthcare, education, and commercial sectors. Projects include The British Museum White Wing and Durham Miners' Hall.
Building Information Modelling
Our BIM Level 2 expertise ensures seamless digital coordination for complex projects. We use 3D modelling to optimise MEP installations, reduce costs, and improve collaboration across design teams and contractors.
Heritage Refurbishment
We specialise in upgrading listed properties while preserving architectural integrity. Recent projects include Grade I listed Neville Hall and Auckland Castle, integrating modern systems with historic structures.
Low Carbon Design
Our CIBSE-certified consultants develop energy-efficient strategies to meet Part L regulations. We focus on reducing carbon emissions through passive design and renewable technologies for new and existing buildings.
Specialist Lighting Design
Our lighting experts create functional and aesthetic illumination schemes for museums, galleries, and public spaces. Projects include The British Museum and Hopetown Darlington railway museum.
Questions
What services does TGA offer?
We provide building services engineering, BIM solutions, low-carbon design, heritage refurbishment, and specialist lighting for commercial, healthcare, and education sectors.
Do you work on historic buildings?
Yes, we specialise in Grade I/II listed buildings with projects including Durham Miners' Hall and Durham Cathedral.
What accreditations do you hold?
We are ISO 9001/14001 certified, CIBSE-accredited, and have BREEAM, Passive House, and Fitwel accreditations.
How experienced is your team?
Our engineers have 60+ years collective experience delivering complex projects for clients like Durham University and Auckland Castle Trust.
What areas do you serve?
We operate nationwide from offices in Newcastle, Leeds, London, and Stevenage, covering heritage and new-build projects.
