Hi Jessy,I'm not sure if you are looking specifically for an 'app', but I have posted an Excel spreadsheet in the FilePlace that has a Repair Cost Estimator:It's prebuilt with 24 scopes of work, and 300+ typical work items & unit costs.https://www.biggerpockets.com/files/user/drobertso...

Either item can go bad.

Additionally, you can contact a local property manager and ask them what average vacancy rates are for your area.I'd also recommend creating a recurring capital expenditures budget amount to set aside each month to hedge agains upcoming replacements for major items like roof, furnaces etc.

If they have a more established rental history, have been employed longer or their employment is stable, the more likely you can collect if something like this happens (and the more likely they are to pay/not damage items so as to avoid this altogether).

Also flood insurance is a killer and with rates beginning to increase for the next 8 years if you are not above the heights for FEMA guidelines you will need to make the decision whether to eat the flood insurance as a line item, Which will get costly or front the expense to elevate to reduce flood risk for the foreseeable future.

Try repairclinic.com  I am lucky that they are local and i can just pick items up the same day, but they ship too!  

I bought MHP last sping full of White trash tweakers and meth heads.. cleaning It up.. and I know quite a bit about title and how to clear items... along with the deals I do in SC that have all sorts of family and estate issues.. some taking a few years to settle.But your right some brokers just sell houses and don't deal with the weird deals out there but that's not me..

Bought my foreclosure last year and one of the items on the list was to replace the retaining wall on the end of the pool.  

Before our meeting I had a premonition to add up his line items.  

They left...and they took the front doors, light fixtures, and other items with them at the cost of about $20,000.The point is, not everything in life ends up on a credit report.