They are using rules to add multiple ADUs.Here is a list of why adding a single ADU in dingle 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.

-------------------------------------------------------------------------------------------------------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?

If not, you'll likely need to sign at the US consulate/embassy... and those appointments often need to be scheduled well in advance.

Often times, their approval processes are slow.Credit Unions - Their member structure also subsidizes their financial structure so they can also be a source of low-cost financing.

Painters often overestimate their value, so it’s crucial to get multiple quotes.

Thats really awesome, I travel to Mexico quite often and have been thinking about this.

Unfortunately, people in the trades are often good at their trade but poor at managing their business.

Ensure you have an itemized invoice from the cleaner, which can help justify the deduction.Reasonable Deductions: Long-term tenants often leave normal wear and tear, so I recommend being lenient on minor issues.

Often you can't see all that without being there. 

To avoid going through the same poor experience, keep reading.Even if someone gives you a referral here, do NOT make the mistake of assuming that the PMC will meet your expectations, just because they met the expectations of the referral source.In our experience, the #1 mistake owners make when selecting a Property Management Company (PMC) is ASSUMING instead of CONFIRMING.It's often a case of not doing enough research, as they don't know what they don't know!