Business Details
37 Years
experience
Sustainable Engineering Consultancy Solutions
Established in 1989, Pettit Singleton Associates (PSA) has built a reputation as a leading sustainable engineering consultancy for the construction industry. Specialising in mechanical and electrical design, project management, energy conservation, and compliance, we deliver tailored solutions that combine technical expertise with a client-centric approach. Our team holds memberships in prestigious professional bodies including CIBSE, IET, and BSRIA, ensuring adherence to the highest industry standards. With over three decades of experience, we prioritise active senior management involvement and enhanced site inspection during construction phases. Our commitment to sustainability is integral to our design philosophy, integrating eco-friendly practices and technologies to create environmentally responsible energy solutions. We serve diverse sectors including healthcare, residential, and commercial, with a proven track record of delivering complex projects on time and within budget.Our approach combines rigorous technical analysis with practical problem-solving, ensuring compliance with evolving regulations while maintaining cost-effectiveness. Through continuous professional development, we maintain cutting-edge expertise in sustainable technologies and practices. Our long-standing client relationships, some spanning over 20 years, reflect our dedication to transparency, reliability, and exceptional service delivery. We specialise in auditing existing building services, identifying non-compliances, and providing tailored remediation solutions. Our multidisciplinary team offers Authorising Engineer services, Clerk of Works oversight, and comprehensive project management, ensuring every project achieves the highest standards of quality and safety.
Services
Mechanical Engineering Design
Electrical Engineering Design
Authorising Engineer Services
Project Management
Clerk of Works
Energy Consultancy
Compliance Audits
Renewable Energy Solutions
Building Services Compliance
Sustainability Consultancy
Details
- Year established: 1989
Highlights and features
- Established in 1989 with multidisciplinary engineering expertise
- In-house Authorising Engineer services for regulatory compliance
- Specialists in sustainable design and renewable energy integration
- Proven track record in healthcare engineering spanning 20+ years
- Active senior management involvement in all projects
Associations and certifications
- CIBSE
- IET
- BSRIA
- CHAS
- Constructionline
What people say
Invaluable partner
Deep understanding
Meticulous attention
Proactive approach
Trusted partner
Services
Mechanical Engineering Design
Our mechanical engineering team delivers optimised HVAC solutions that balance functionality with energy efficiency. We specialise in system design for new builds and retrofits, ensuring compliance with current regulations while maintaining cost-effectiveness. Our approach combines advanced software modelling with practical construction knowledge to create systems that enhance building performance without compromising on comfort or safety standards.
Electrical Engineering Design
We provide comprehensive electrical design services covering power distribution, lighting, and emergency systems. Our engineers utilise BIM technology to create integrated solutions that meet safety standards while optimising energy consumption. From initial concept to final implementation, we ensure electrical systems align with building requirements and regulatory frameworks across diverse sectors including healthcare and commercial developments.
Authorising Engineer Services
As experienced Authorising Engineers, we ensure critical building systems meet statutory requirements through rigorous audits and validation processes. Our team specialises in healthcare engineering compliance, providing independent assessments of medical gas, water, and electrical systems. We maintain detailed documentation and offer practical remediation strategies to address non-compliances while minimising operational disruption.
Project Management
Our project management services cover the complete construction lifecycle from initial scoping to final inspections. We coordinate contractors, manage budgets, and implement quality control measures to ensure timely delivery. With expertise in both new builds and refurbishments, we provide technical challenge while maintaining client-focused communication throughout the project duration.
Clerk of Works
Our Clerk of Works service ensures construction quality through regular site inspections and material verification. We monitor compliance with technical specifications, witness system testing, and maintain detailed documentation. Our engineers provide ongoing quality assurance for mechanical and electrical installations, ensuring final deliverables meet design intent and regulatory standards across various building types.
People
Stephen Pettit
Founder
Stephen established PSA in 1989 after identifying a need for ethical engineering consultancy. With extensive NHS experience, he pioneered the company's client-centric approach and commitment to sustainable practices. His vision continues to shape the company's culture of integrity and technical excellence.
Norman
Senior Engineer
With over 20 years of experience, Norman specialises in mechanical systems design and compliance audits. His technical expertise and ability to explain complex engineering concepts have made him a trusted advisor for major healthcare clients, delivering critical infrastructure projects with precision.
Gavin
Project Manager
Gavin leads complex engineering projects with a focus on regulatory compliance and client satisfaction. His extensive knowledge of building services systems and proactive problem-solving approach have delivered successful outcomes for numerous high-profile healthcare and commercial developments.
Karl
Healthcare Engineer
Specialising in NHS facilities, Karl provides expert mechanical and electrical design consultancy. His deep understanding of healthcare engineering requirements and responsive approach have made him instrumental in delivering critical infrastructure projects for mental health and acute care facilities.
Gary Shaw
Building Services Engineer
Gary combines technical expertise with practical construction knowledge across diverse projects. His experience in sustainable design solutions and commitment to continuous professional development reflect PSA's core values of innovation and environmental responsibility.
Questions
What sectors does PSA specialise in?
We specialise in healthcare, residential, and commercial sectors, with particular expertise in healthcare engineering gained through 20+ years of NHS partnerships.
Do you offer Authorising Engineer services?
Yes, we provide Authorising Engineer services across multiple disciplines, including healthcare engineering systems compliance and regulatory validation.
How do you ensure project compliance?
Through our Compliance Cycle process involving audits, analysis, design solutions, and ongoing monitoring to maintain regulatory adherence throughout the building lifecycle.
What makes PSA different from other consultancies?
Our combination of technical expertise, long-standing client relationships, and commitment to sustainability, with senior engineers actively involved in every project.
Can you manage complete construction projects?
Yes, our project management services cover the entire lifecycle from initial scoping to final inspections, including contractor coordination and budget management.
Do you provide site quality control services?
Yes, our Clerk of Works service offers regular site inspections, material verification, and quality assurance for mechanical and electrical installations.
