I'm under LOI with a water main installation and maintenance construction company that also does road construction projects. I'd like to learn more about the construction bonding process.

What are competitive bonding rates? What drives bonding rates?
What are minimum asset thresholds for competitive bonding rates? How much must be in cash on the balance sheet?
How do you effectively shop and evaluate bonding companies? What services should I expect from a bonding company?
What are major red flags in bonding, both from bonding companies and the seller's use/explanation of bonding at his construction company?

I'd love to set up a phone call with someone knowledgeable about bonding. Thanks!