(A 3 family would be 4 units counting the exterior, so use $24,000 as a base number to negotiate with.)There;s also a database online you can check to see if the unit has ever been inspected.Good Luck!

@Bruce Woodruff really appreciate the encouragement here. great points made on the fact that a bad tenant is a bigger problem than paying a mortgage payment.

Look into mortgage, loan, and down payment help programs.

Will a buyer be able to get insurance and a mortgage as-is or do I need to replace the secondary roof?

subject to mortgage ? 

Resources such as books, online courses, and real estate seminars can provide valuable insights.Step 2: Define Your Investment GoalsIdentify what you hope to achieve through real estate investing.

You are missing out on an opportunity to train your inherited tenants to pay on time (and potentially extra revenue) by not using an online rental payment option where you can automate your late fee collections.

may complicate the mortgage he is trying to get as well. 

And if you want to save even more you can search for used online (ebay, craigslist etc) I use Alert One (you can google them, they are on Rising Sun ave.) for annual certification in my buildings but use my electrician to update, install or replace the alarms.