If you co-sign, the loan will consider both your incomes but also both credit scores, so her credit could impact the terms or buying power.

DSCR loans are based off of down payment, credit score and either actual or market rents so it helps to supercharge an investor's real estate goals and net worth.

: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.

I can help you review what are the average nightly rates in that location in comparable properties so you can have real numbers of your neighbors, not sure if you are familiar with AIRDNA, I have the paid version for Tulum, and I would be happy to share the info with you so you can make the best choice. 

: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.

I address it in detail in my book, but here's the short version:1.

I have not seen any "main stream" versions of this just back country engineering but it's a solid concept and works well. 

Quote from @Brandon Croucier: Ive seen credit as low as 450, high as 830.Both of these are the 99th percentile though. thank you for some reason I thought 800 was highest.. its always confusing to me how they come up with those scores.. 

Doubt this is the final version as the "smart" people in the city understand Detroit is coming back and needs to keep welcoming investment instead of putting up roadbloacks:)As many STR landlords have learned in other cities and in oversatuarated areas, it's always good to have a backup plan!

The only tenant I have with a credit score over 600 has a HUD voucher!