The author emphasizes the importance of your debt-to-income ratio (DTI) when it comes to getting approved for a mortgage.

On housing authority maybe (rest of rent would be coming from housing then)? 

They worth with the Housing Authority to assist veterans.

As for the rent increase, I have a clause (not sure if its legal or enforceable), but it states that any additional tenants are $###.00 extra per month with the condition I authorize it and he/she must complete the evaluation process. 

Whose authority will be higher: county tax roll or city building department?

schedule an inspection with the local housing authority office.

They will probably deal only with someone on the note or someone who has been authorized.

Also, is there something the lender provides the client that allows them to pull, like an "authorization to inquire" or something?

You appear as an authority when you have your license 7.

.- Becoming an Authorized User on Cards from family & friends that are High-Balance, Low Utilization Percentage (less than 30%), no derogatory info on the account (late payments, delinquencies, etc.), and a established history of time since account being opened. - Attempt to have utilities and rents that have on time payments to reflect on your credit report.