In fact with a slightly higher credit score and full documentation income lenders are going to 95% CLTV..SFR not condo..check in with @Joseph Chiofalo he's helping several clients with cash out HELOC's and fixed seconds currently. 

. - For greater than 5+ multi family properties the 'best' initial source for financing could be a local credit union or bank.

This will be subordinate to the existing FHA loan, but you’ll need to qualify based on your credit score, income, and debt-to-income ratio.Home Equity Line of Credit (HELOC): A HELOC could also be an option, offering flexibility in how you draw and repay funds, though it might come with variable interest rates.Balloon Payment Loan: This type of loan can offer lower initial payments with a large lump sum due at the end of the term.

There are a lot of factors that go into the pricing of a loan such as loan amount, purchase price, credit score, income documentation type and property type. 

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

However it really depends on your credit score, LTV and cash flow of the potential property you are looking to purchase.

In the meantime use this resource to find out the areas around hereUse this rating and classification system I have created over time to get an idea of the "Class" for the area - A class B class & so onhttps://www.areavibes.com/Here is my rating & classification for each livability score. 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 F

I work for a union contractor who specializes in custom homes. 

I have a 5 unit in that area and use Union Bank up in Morrisville.