First, try local community banks, such as Umpqua. If they have nothing, go to Washington Federal. They always do these kinds of loans, have for years and didn't get caught up in a lot of the bank mess in the news.
You will be looking at two loans, a construction loan and then a takeout loan. For the construction loan, you will have to subordinate your property and perhaps even contribute some cash to the loan. Maybe not. It will depend on the loan-to-value ratios. It will cost you at least 2 points over prime and maybe more on the amounts advanced. That is, you won't be taking down the whole loan at once--only what the contractor needs on each draw.
The bank should explain such issues as early issue title, where the lender (and you) can be covered around contractor liens. The bank should also handle the contractor draws (I'm assuming you're not a contractor, by the way).
You will need a takeout loan committment before the construction lender will fund your construction loan. A takeout committment is nothing more than a traditional mortgage loan. Like any mortgage loan, it will have its own underwriting costs--points, appraisals, etc.. it will seem unreasonable to you to have to pay for it, because you will have just done so for the construction lender. That's just the way it goes.
Contact me if I can help.