@Douglas Brown Lots of great info mentioned above. I am not sure but I didn't see anything about Builders Risk policy. I do the following:
1. Use Foremost as Insurance on a vacant house at purchase needing repairs. Switching at occupancy to a standard policy
2. When occupied have my agents quote occupied policies as well as a quote from Foremost making sure when a vacancy occurs coverage is available.
3. If it is a higher-priced property that is vacant and needs some repairs or a major rehab on a lower-priced property I will purchase a Builders Risk which also covers uninstalled materials and products on site.
We went for 4 years with zero problems in 46201, 46205, 46208, and 46218 averaging 80 to 100 vacant units per year but at the end of 2019 and 2020, we have had to take more precautions. Boarding up units including all windows until occupancy, Simpli Safe Alarms, holding off install of new HVAC and appliances until the day before move-ins seems to work very well.
Good luck