Jersey City market is very expensive after running the numbers on multiple properties I just don't see how the numbers makes sense to still house hack there unless I'm doing airbnb or something like that while live in another unit.

I dont understand how this even happens, does she occasionally open up her front door and and fling a diaper on the property?)

I am using National Tenant Network https://ntnonline.com/ to run reports. 

Now, if I am putting on my paranoia hat, they have the code to the door and the address.

Are you running a business? 

Finally, an interesting property has popped up but I don't know if it would make sense in the long term.Some numbers:(I know I said HCOL and this may not appear to be that, but coming from the midwest, this was a significant jump)The avg fixer-upper single-family home is going to run us ~325k and with around $40,000 down and a 6.9% interest rate we're looking at something like $2,400 a month PITINow the duplex I mentioned would go for about 100k more and with the same down payment and interest rate we'd pay something like $3,200 a month.

Its GREAT to understand where the numbers come from but tiresome to run them by hand all the time.

Many banks do not run municipal searches and therefore can still finance the deal despite missing COs and no permits.Whether a buyer/borrower would take on the property this way is a different story.

It runs background checks, credit reports, eviction/criminal reports, template leases, a Docusign-like program to sign lease agreements, rent collection, tax consolidation for EOY tax time, etc. 

Shoot, you could own 10 doors and be on your way to an early retirement, my friend.I know this will not be a popular concept here, but consider it anyway.