This could be a temporary solution, allowing your girlfriend to have one unit, while you rent out the others individually until you save enough for your own place together.

I'm looking for some guidance on how to go about doing this since my contractor quoted that the job would take 1-2 weeks and during that time there would be no access to the unit because there isn't enough room to put a temporary stairway while they are building.

All private sector jobs are temporary.

Do not allow deadlines to float... the minute someone is late, start with the legal requirements even if you like them and believe it's a temporary issue. 

The business may still be viable for investors as there continues to be a need for temporary housing solutions for healthcare workers and other essential personnel.

Are there any big industries that bring in temporary or short term workers or contractors? 

They're also avoiding short term rental fees, temporary storage fees.Creative finance: they have too much equity for a subject-to deal; but I'm wondering if I could do a wraparound mortgage of 300k at 4.51% (payment would be around $1785/mo; market rent is around $2300/mo) and maybe offer like $40k cash?

If a tenant communicates a TEMPORARY situation not of their own making and has a good payment history, I will often waive a late fee.

Anyways so what Natalie said up there is just its a temporary exemption on 6+ freshly planted fruit trees intended to not tax you for improvements (Fruits trees) before they produce.

This tenant is a temporary issue, and you will have your building back soon enough.