I realize this may seem ludicrous to most, but none of the typical apparent options are available.

We typically let them know that we'll be raising the rents incrementally and we will sometimes give an increase schedule such as they're now paying $450 and we're raising the rent by $20 effective in two months, and then six months after that it's going up another $20.00 and so forth.

General contractors typically charge a percentage for their service.

They typically require 20-25% down so it sounds like you're good there. 

They take into account the tenant's income, other housing costs like utility bills and market rent for the area. 

Who is typically responsible for obtaining building permits, the property owner or the general contractor?

Typically I don't argue with people on it, I just tell them to do it if they don't want to hear my points.

: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.

@Hussein MyrBanks typically do not give loans against LLC investment companies.

Forced Apperception (BRRRR or buying at a discount) allows me to build in equity from the beginning.Market Appreciation is where you will make the most money over a 10-year period but is the least predictable.You typically cant get a second position loan or HELOC from an investment property.