Payment methods, tax collection etc.

A certified letter is good because they sign for it, acknowledging receipt, any other forms of written communication you can get to document that they were notified of the hazard probably also helps. 

Neither unit has paid rent and has blocked us from communications.

You can also check online resources like BiggerPockets or Roofstock, which offer general CapEx guidelines based on property type and age.These methods should help you perform a solid preliminary analysis.

I would keep and organize all of your communication around this issue, including gathering pictures of the unit and the area in question that was repaired.

Realtors listing is a great way to market it, Facebook is also an underutilized method.

This frees you to focus on higher-value tasks like growing your portfolio, owner communication, and big-picture strategy.2.Adopt a Portfolio Management Structure: Early on, I ran a departmental structure (separate teams for maintenance, leasing, collections, etc.), and it caused inefficiencies and communication breakdowns.

Here are a couple of methods of pipe replacement that I am aware of you might be interested in looking at.https://www.youtube.com/watch?

@Elizabeth RossFor properties under 100k you will likely need to use the BRRR method as its difficult to get a 30Y loan on a properties valued under 100k.

.: Hello,I have several SFRs that have lots of equity in them and I wondering if anyone used a method of cross-collateralization to pledge the equity as collateral, thus avoiding doing a cash-out refinance or HELOC.