However, I do have a low credit score.

This helps give you a 30,000 over view of what a potential city/zip/street is like https://www.areavibes.com/It gives you a total livability score and this is the criteria I have come up with over time.80 and above A+78/79 A76/77 A-74/75 B+72/73 B70/71 B-68/69 C+66/67 C64/65 C-60/63 D59 and below FCheers from Fort Worth, TX 

:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

What kind of credit score do they have, and is it high enough to meet the requirements of lenders?

You go in front of a judge they appoint a trustee and you make scheduled payments usually smaller than the previous payment until you get caught up and a head.In most cases you can rebuild your credit scores while you are making payments back to the trustee.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

Or vice versa.The lesser areas can typically cash flow better and have more opportunities for bigger discounts. 

With Conventional, your brothers do NOT need income, do NOT need credit scores, DO need to be on the loan and live in the property for 1 year.

Ziprent found me a tenant with an 800 credit score in 7 days near the top of the market rent for my condo during slow season!

:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.