You guys are getting ripped off. Most of these BER assessors are ex estate agents, civil engineers, quantity surveyors, carpenters, and people who have been laid off in construction. I know this as I work in Construction. Currently we are using a company to carry out BER certs on 145 no. units and we are been charged €152/unit. Obviously, the rates are different in a one off house case but you should ask te BER assessor for the qualifications and industry experience rather than them waving there BER qualifications at you, which they bought from the SEI. Personally I think the BER cert is a waste of time an an air tightness test is more benefical. Also, be careful of these guys that call themselves "energy consultants" unless they have a MSc in an energy related subject. I think your money will be well spent if you employ someone who is from a Mechanical or plumbing background as a large element of the BER is in the energy performace of space heating, ventilation, water heating, lighting & roof & wall insulation.