Estimating Electrical Services on Commercial Buildings Over 25 years experience in the industry Commercial electrical estimating service for electrical contractors. We are all experienced electrical estimators who are, "Time served electritians" with City and Guilds in Part 1, Part 2 and C certificate. Make sure you know who's estimating your work, it make the difference between your business sucess and failure. Ensure your tender is commercially sound We have all had over 25 years experience in the industry. We'll ensure your tender offer is commercially sound and protects your Business. each estimate is returned with a model tender letter.   johnj on February 09 2010 00:00:00 ·