About us

What do we do?

  • Energy assessment
  • Building compliance
  • Consultancy
  • On-site testing

Who do we do it for?

  • Housebuilders
  • Contractors & developers
  • Architects
  • M&E engineers
  • Local authorities
  • Self-builders & homeowners

Where do we do it?

We cover the whole of the UK.

What makes us so different from everybody else?

  1. Our management team is from a background in property development. So we think like a developer and are always looking to save you money & time and reduce risk & hassle
  2. Our key personnel are from accreditation body backgrounds. So we know exactly how to get you through the regs
  3. We will always find you a solution.

Why use us?

  1. We will save you money
  2. We will save you time
  3. We will reduce your hassle
  4. We will reduce your risk.

How experienced are we?

The Team


Mark Heptonstall | Managing Director

Mark Founded C80 Solutions in February 2010 following a successful career working for Persimmon, David Wilson Homes and Stroma. He has a First Class Honours degree in Architecture from The University of Sheffield and a Masters in Business from Manchester University. He is an experienced MD and business owner with over 15 years’ experience working in the property industry. His current business focus is growing C80 Solutions via organic growth and the acquisition of complementary businesses to continuously improve the service offering to customers. When Mark isn’t focusing on growing the company, you’ll find him running around after his two toddlers, attending the gym or reading books on personal development.


Oliver Bentley | Operations Director

Oliver is Mark’s second in command at C80 Solutions and oversees the day-to-day running of the company. Oliver has worked as an energy assessor for over 11 years and is an On-Construction Domestic Energy Assessor (OCDEA) who is qualified to carry out SAP calculations and EPC Assessments. Since the start of his career, he has carried out over 5000 SAPs and EPCs and trained over 500 SAP assessors. Oliver has three children and they all enjoy sports together. You will find him either running, swimming, golfing or supporting Leeds Football and Rugby.


Tracey Walsh | Commercial Energy & Sustainability Consultant

Tracey specialises in commercial property and she looks after all elements of non-residential energy compliance and assessment at C80. With 10 years working as an independent assessor for her own company, she is fully qualified in BREEAM and Thermal Modelling and has recently passed the NDEA Level 5. In her spare time, you’ll find her gliding out lengths of the local swimming pool or spending time with her 10-year-old son and 3-year-old grandson.


Jonathon Hill | Energy & Sustainability Consultant

Jonathon joined C80 in December 2018 from Stroma where he worked for 7 years. Our residential specialist, Jonathon is a qualified Acoustic and Air Permeability Engineer and looks after all sound insulation and airtightness testing. Jonathon has a real passion for the science of acoustic measurement and thrives on the variety that comes with visiting client sites up and down the country. A keen sportsman, in the winter you’ll find him on the rugby pitch and in summer he’ll always make time for a round of golf.

Dan Chadwick

Dan Chadwick | Energy & Sustainability Consultant

Dan is the newest member of the team, having joined C80 Solutions in August 2019. With an Energy Assessment background, Dan has also worked in Asbestos Management and Fire Risk Assessment. His specialism is Part L of the Building Regulations and his enthusiastic approach means he’s already taken on SAP Calculations, SBEM Calculations, Dynamic Simulation Modelling and Thermal Modelling at C80. Dan describes himself as a family man and when not at work, he enjoys a long walk with his wife, son and German Shepherd. Dan’s also a big fan of NFL American Football.


Tammy Temperley | Office Manager

As Office Manager, Tammy ensures that the work the business undertakes is carried out smoothly. Tammy produces all quotes and invoices, takes care of client liaison and manages the schedules for all jobs including air, sound and ventilation testing. Prior to working for C80 Solutions, Tammy worked for two large chartered surveying firms, giving her a solid knowledge of the construction industry. She enjoys delivering excellent customer service and likes nothing better than to receive positive feedback from our clients. With two small children, Tammy rarely gets time to herself but admits to enjoying a long walk and a good film whenever she gets the chance.



Katherine Naisbitt

Katherine has over twenty years’ experience within the Construction industry working with an array of companies including Manufacturing, Ground Engineering, Recruitment and Building Control to name a few. She has also designed and set up her own unique clothing company. Katherine is looking after the core business functions of HR, Marketing and Finance to ensure the Development and Growth of C80 Solutions. In her spare time between work and a young family, Katherine enjoys going to the gym and travelling abroad.



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