I have provided landscape ,irrigation ,and maintenance services for a large corporation for about 7 years now. I have always questioned my pricicing of the new irrigation and landscape installations that I have done for them. I generally take the materials cost and double it with additional charges for equipment usage at 50.00 per man hour. I would really appreciate any help in possibly obtaining a better estimating technique if this seems under estimating. The average job cost is around 48000.00 total if that helps any. Thanks for any suggestions.