Address: Unit 3, Churchtown Business Park, Churchtown, Dublin 14 Phone: +353 1 298 3000 Email:

Our People

Our People are amongst the most experienced in the industry and all have degrees in either Engineering or Architectural Technology.

Harry Lewis BA.BAI MIEI - Director

Harry is a cofounder of Commercial Energy Ratings Ltd and has over 30 years experience in engineering and management. Harry is responsible for the overall management of the company, please contact Harry for all quotations and for any technical advice that you may require.

Liam Cullen - BEng MIEI Land Mapping Engineer & Registered BER Assessor

Liam has over 25 years experience working in an architectural practice and is our principal land mapping engineer. Liam leads the service delivery of the mapping function and his all round Engineering experience and many years experience of producing land registry compliant and lease maps mean that he can complete all mapping assignments from the simplest to the most complex.

Brendan Boyle - BA Hons Arch MCIAT & Registered BER Assessor

Brendan has 10 years experience as an architectural technician and BER Assessor and specialises in BER Certs for Residential and Commercial properties. Brendan has completed Commercial BER Certs for some of the largest hotels and office buildings in Ireland. Brendan is also an expert in producing provisional BER certs and testing new buildings for Part L Compliance of the building regulations.

Andrew Tarr - BEng (hons) & MSC MIEI & Registered BER Assessor

Andrew has 7 years post graduate experience and an MSC in environmental systems. Andrew is a commercial BER specialist and has also completed numerous large assignments on Shopping centres, Hotels and Industrial Premises.

Fiona Kavanagh - Office Administrator

Fiona looks after customer contact and office administration. Fiona has many years experience running a busy office, Please contact her for Residential BER and Land Mapping quotations or to schedule a survey for a BER or Land Map.