If those are coupled with cash flow then great because the expenses were paid and the returns are higher than those percentages.

In the case of after-tax contributions, they must be allowed by the plan document and are subject to the actual contribution percentage (ACP) test and the IRC 415 limits.

Note you can offset some of this rental income by allocating costs incurred for the property to the percentage of the property you are renting. 

Correct or multiple people depending on how the membership percentages of the LLC are made up.

In Michael's example the credits are directly deducted from the down payment, as opposed to being deducted from the total due and then reducing the down payment (which would be a percentage of the total due, and a much smaller reduction in the down payment then if it were deducted directly from the DP).Here is the example from Michael's post: "1.

How much money/percentage% should I have saved up before starting this journey?

Here are some code excerpts:31-17-1 (M) "Primary mortgage loan" means any loan primarily for personal, family or household use that is secured by a mortgage, deed of trust or other equivalent consensual security interest on a dwelling as defined in Section 103(w) of the Truth in Lending Act or residential real estate upon which is constructed or intended to be constructed a dwelling;31-17-8(M)(4)(4) Require the borrower to pay, in addition to any periodic interest, combined fees, compensation or points of any kind to the lender and broker to arrange, originate, evaluate, maintain or service a loan secured by any encumbrance on residential property that exceed, in the aggregate, six percent of the loan amount financed, including any yield spread premium paid by the lender to the broker: Provided, That reasonable closing costs, as defined in section one hundred two, article one, chapter forty-six-a of this code, payable to unrelated third parties may not be included within this limitation: Provided, however, That no yield spread premium is permitted for any loan for which the annual percentage rate exceeds eighteen percent per year on the unpaid balance of the amount financed: Provided further, That if no yield spread premium is charged, the aggregate of fees, compensation or points can be no greater than five percent of the loan amount financed.

*FHA mortgages allow commercial units as long as they don't exceed some certain percentage of the overall property.

They show gallons used on dial like an odometer, so we just read the meter and calclate the percentage of total usage by each side, then back bill the tenants for the water bill we get.Example: 12,000 gallons. 

My basic underwriting percentages (vacancy, repairs, CapEx, management) are from analyzing hundreds and hundreds of deals.