I would say with good time lines and excellent plan and permits already reviewed. 

Plus lot, permits, hookup fees, say $40,000.  

The maximum amount that the plan can permit as a loan is (1) the greater of $10,000 or 50% of your vested account balance, or (2) $50,000, whichever is less.For example, if a participant has an account balance of $40,000, the maximum amount that he or she can borrow from the account is $20,000."

They would be required to get permits with the city and do it legally, so, that's a part of it.Anyway, don't listen to people who say it can't be done, or that no landlord would ever let you do it.

Do i need a city permit for replacing A/C and furnace in a rental duplex Should it matter if the installation is done by an individual doing it as a side job who works for the heating/cooling company or from directly from the heating and cooling company cost difference of around 4grandTHANKS

Step 3: https://atlas.phila.gov is a bit more comprehensive and has most of this info central with the links to their main city pages (i.e. deeds, permits, etc).Always go to the source for city/municipal info.

When they pulled a permit for the work, the HVAC company should have provided all their information including their insurance provider that would cover things like this. 

From what I can tell, the city only requires special permits on "short-term" rentals (less than 30 days), so we shouldn't have to jump through too many hoops on that front. 

Does this pose any kind of potential permitting issue for a future buyer? 

We'll do this as soon as covid permits!