Here is a list of why adding a single ADU in single family zoned areas in my CA market is typically a poor RE investment:1) The value added by the ADU addition is often significantly less than the cost of adding the ADU.

Hospitals with trauma care levels one and two and neonatal intensive care typically have the most traveling nurses.

Typically people only get insurance on things that they own, or liability insurance for their own protection. 

Short term my credit score did take a hit, but once the promotional transfers were paid off, my score jumped higher than it was before.These days, the "pure" zero percent transfers don't seem to be around anymore as they typically charge a 3-5% balance transfer fee as part of the promotion, but this is still better than current HELOC rates.

Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

there is no bank, no mortgage, and therefore no due on sale clause.if there is a mortgage in place, and you take the payments over, this is typically referred to as subject-to or sub2 and is much higher risk for everyone involved.

Typically someone who was communicative turns distant, unresponsive, blows you off when you're trying to talk to them in person, and the tall tale sign of boxes in the hallway.

@Amir PortalRecommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

It slows down the unethical operator.But it is rarely actually mortgage fraud, which is typically related to the paperwork filled out and documentation provided to originate the loan.Since someone buying on SubTo rarely signs paperwork with the original lender, he isn't telling the lender a lie and therefore making a claim of mortgage fraud against the buyer is difficult to make stick.

I like the garage conversions for ADUs since you can typically complete a 1-bed, 1-bath conversion for around $90K–$110K.