@Jin Zhang Assuming that your loan depends on appraisal (most are, except for cash purchases or very large down payments), you need to execute an extension to push the date out a couple of weeks.Here in Maine, and I understand elsewhere, appraisers are running VERY slowly. 

Should I offer a lower amount assuming there will be extensive rehab?

I am an agent with investment properties of my own with extensive experience in commercial construction.

After all expenses, which are extensive, the CoCROI is about 11%.

I worked extensively in Philadelphia. shells and lots are becoming super expensive.

typically the utility provider considers this your obligation...so, the electrician calls the provider, the provider handles electric between the pole/source and the property, and the electrician installs the meters and panels.It's not quite as simple with electric...the work will be extensive and costly.

I read the extension was for homeowners, not for renters. https://www.whitehouse.gov/bri...

My best guess is that the non-renewal notice (to the guy) will do the job, and you can just sign a new lease (or lease extension with 1 tenant removed) with the girl. 

This is an extension of the CARES Act previously enacted by the prior administration.

I'm going to try for the extension tomorrow but communication hasn't been great between Title or the seller's agent due to the outages.