It really depends.   

More control over your living space.Cons: Significant upfront costs (down payment, closing fees), ongoing maintenance responsibility.The answer depends on your goals!

Actually fairly common, depending on what you're looking for property wise going forward. 

@Eric Miller Choosing between one $600k property at 70% LTV and four $300k properties at 95% LTV depends on your goals, risk tolerance, and management capacity.

@Ahshar SylvestreIt really depends on the violation and extent of the violation.

Hey Randall,Your question totally depends on your goals and situation but rarely is it best to lose $200 a month. 

Depending on the construction, you have to do major upgrades on electric, plan for plumbing for apartments which may not be permitted in the area for the sewer or septic.

Depending on these answers one lender who charges 3 points could theoretically have lower total transactional costs than a lender who charges only 2 points and its important to understand all fees associated with each lenders origination process. 

ADUs can significantly enhance your property's value by adding living space that can be used for rental income or as additional living quarters for family members.The increase in value from an ADU can vary widely depending on several factors such as the size, quality, and functionality of the ADU, as well as its integration with the main property.

I think it greatly depends on your strategy.