Mother in law ADUs, adding good or bad?

[Eric Kissinger]

Hello all, I recently made an offer on a property and the only way it will work for me is if I turn 650 sq. ft. into a mother in law apartment to live in and rent out the rest of the 3 bedroom home. It will not cost much to add the ADU and shouldn’t be a problem making it up to code. Is this practice on a R1 zoned single family home worth it? Does adding a mother in law increase value to a home? Will this addition make more buyers interested when I sell in 2-4 yrs (my end strategy). Any thoughts/input is appreciated! Merry Christmas!