Can my contractor live in the property while he flips it??

[Erin E Adams]

Hi.  I have a contractor that I really like, but he lives an hour and forty five minutes away from my newest project.  I still want him to do it, so he proposed having him and his 2 guys stay at the house 3 nights a week for the next 5 weeks while they flip the house.  Last night, I was told that my normal builder's risk insurance policy that I keep on my flips would be voided if anyone was living in the house while the construction was going on.  I was also told that a renters policy wouldn't cover this type of situation.  Does anyone know if this situation is insurable, and if so, how?  Any help would be much appreciated!