quoting larger area

[polish pete]

 So far I was fortunate to work on smaller contracts easy to estimate labour time or on day rate. But tomorrow I'm going to look at a bigger area, where costumer wants a quote for the whole job. Are there "magic formulas" to estimate labour time per area? I know that it depends on type of growth, operators experience but is there anything similar to blue book in timber mensuration- putting density, area, tree size etc to get a figure? 

[spuddog0507]

Hi how big area are you talking about ? the blue book is your bibble when it comes to forestry work, what you cutting ? whats the ground like ? is access good or poor ? it all plays a part in the pricing of jobs,