Because there's so much at stake, you should do plenty of homework before you commit to any construction loan. The Internet is a good place to start. However, it also makes sense to talk to a professional not associated with the lender, such as a lawyer or financial adviser.
Since construction loans aren't meant to be long term, once your building or remodeling is complete, you'll need to convert the loan. Your best option is a first mortgage, since you have longer to pay off the loan, and the interest rates tend to be lower.