We're pricing work in conditions we don't know
A different region, a different season, a site nobody has walked - and the risk that gets missed is the one local firms price for as a matter of course.
What's happening?
Rates travel badly. Outputs built on last year's job in another region quietly assume that job's ground, weather, labour market and logistics, and the new site did not sign up to any of them. The local firms bidding against you already have the winter working, the tide times or the two-hour delivery windows in their numbers - which is one reason yours looks so competitive.
The correction is cheap compared to the miss: walk the site, ask what the local firms take for granted, and price the conditions as line items rather than hoping the rates absorb them. A pricing review does that systematically - build-up against programme against conditions, with the assumptions written down so the estimate can be challenged before the market does it for you.
The solution
The site's own conditions priced, not last job's.