These two factors were strong indications that we would gain additional equity, and maybe even increase our net worth.While it might be tempting to think that there is no way a house with an extra mother-in-law suite will be less valuable than a house with parking, it is worth making sure that you will have adequate equity when the project is done, and that you are not overbuilding the house.

If you have a loss (think slip and fall lawsuit) on one of your SFRs now, it is fairly easy to have a verdict that spills over into one of your 99 other properties.

Another unintended consequence would be a plaintiff attorney is trying to decide whether you have sufficient assets for him to pursue a lawsuit.  

. , the bankruptcy after  cross collateralization ; ponzi scheme lawsuit is the new normal these days.

Mine is in breach of contract, but it's not worth filing a lawsuit. 

I've seen these lawsuits go on for a year to a year and a half and you must be making the payments even if you are uncertain of the outcome.

Search their personal and company name for past or current lawsuits (public record in AZ and easily accessible through government website)3.

Numerous lawsuits resulted with charges of fraud3.

Another way to think about it is: "which cost is greater, $15k or a lawsuit laying claim to my assets?"

YMMV.BTW, I've never lost a law suit in my life, but some can be a PITA.