Needs about 5-10k of work.My issue is getting funds.

The only issue that isn't perfect is that they allow you to bundle the "MA Security Deposit Disclosure" and "MA Statement of Present Condition" with the lease when both of these documents need to be completed after the lease is signed not at the time the lease is signed.

Nothing in this section shall be deemed to affect the legal status of a secondary dwelling built with a lawfully issued permit if the property is subsequently transferred or sold, or if the one-family dwelling or secondary dwelling is subsequently rented or leased.https://library.municode.com/ca/san_jose/codes/code_of_ordinances?

For example growing pot is incredibly hard on buildings and properties with grow operations in them likely wont come back into circulation; more importantly until the banking issues are resolved and the industry is not forced to operate on a cash basis crime will always be an issue. 

I am under contract to buy my first house right now. My closing date is December 14 2017. I am leaving my current job on December 10 and joining my new job from January. I am worried that it will me hard to process th...

You're not closing until the issue is resolved -- so no need to worry at this point.  

If you make your payments and stay in compliance with the commercial loan then there should not be a personal credit issue. 

No issues at all. 

What issues does the developer avoid if he sells to you?

There are very few long term rentals available so vacancy will not be an issue.