Even in philly in D class area it is tough to hit the 1% rule.

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In Columbus, you can still find the 1% rule and there's amazing appreciation potential due to how much population growth, job growth, and companies moving/developing there (recently Anduril just announced another 4,000 jobs coming to Columbus Ohio on top of Intel, Google, Amazon, FB, Nationwide, Ohio State University, etc.).

I have also seen appraisers recognize that multiple ADUs by rule does not qualify for conventional F/f financing.  

Depending on where exactly the property is located they may have some different rules/laws in place.

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If you're looking for cash flow (like the 1% rule) and amazing appreciation potential, I do recommend a market like Columbus Ohio. 

Asking in the correct forum will get a better response.Read the RULES!

When you have studied your market properly you should be able to provide the answer of if single family or residential multifamily is better for cash flow. 1% rule was for a time when almost all deals were decent as a way to rule out the lessor deals and concentrate on the best deals.

Starting out rules of thumb for newbiesThanks for your insights.Hey @Malcolm Brown, welcome to the BP Forum!