I don't know anything about the Peioria Heights rental market but the argument would be that a $30k home will be a "class C (or less) neighborhood" and while you may see good cash flows and rent at the 2% rule, you'll see higher turnovers, maintenance costs, and capex which will ultimately catch up.

Its very expensive, 22000$ for each water and sewer meters + installation costs, so that is ruled out. 

This is known as the self-sufficiency rule.

@Bryan Hancock One of the benefits of the old rules for accredited individuals was that they were easily understood.  

Obviously, it takes more money and time since purchasing to sale, but i guess it may be more profitable.My question is:I read the main rule on rehab market is 70% rule, but i assume on improvement and re-building segment there are another rules, because we can get price above average market price.

After you've done enough of these, you'll fee comfortable using rules-of-thumb to screen deals, with reasonable knowledge of what your HML costs will be.

EFFECTIVE GROSS INCOME: $89,330EXPENSES:Property Management: 7.5% = $6,700Insurance: $5,112Maintenance: 12% = $10,720 (I will likely modify this number after inspection one I have a better idea of the actual shape of the property)Taxes: $8,568Trash: $1,085Water/Sewer/Common Elect: $6,910TOTAL EXPENSES: $39,094NOI: $50,236Cap Rate: 8.37%Debt Service: $33,672 (5 yr arm - 25 year am, 5.0%)Net Cash Flow Before Taxes: $16,564Cash on Cash (Assuming 20% down): 13.8%ROE (NCF + Princip paydown): 22.1%DCR: 1.49Debt Yield: 10.5%Using 50% Rule: $83.28/unit/month

That means cities cannot pass laws or zoning rules that restrict or interfere with addicts living in the community.

There is not set rule or amount.  

@Hector ResendezThe rules allow for investing IRA funds in real estate (see the following IRS link for more information on this: https://www.irs.gov/Retirement-Plans/Retirement-Pl...)