Not only low-flow, the flushing mechanism reduces the likelihood of clogs.  

This is because the main house often includes value drivers that ADUs do not, such as larger living spaces and more comprehensive amenities.

As in - we will not vote for your bill unless you include our other thing there.

I'd say the logical paradigm in the question is a bit off.CRE includes everything from airports to golf courses to hospitals to campgrounds.So saying "residential versus commercial" is like saying "bacon versus plant life."

Did you have taxable income that could’ve been reduced utilizing tax strategies?

We certainly have found some deals that would reduce our living expenses compared to renting.

I like new construction since there isn't any deferred maintenance and the properties should be relatively maintenance free for the first couple years (although it's good to include maintenance/repairs in your pro forma and maintain reserves just in case). 

(eg, if your lot is not the standard 25 x 125, but some other multiple where the width is actually skinnier than 25, and the lenghth is longer than 125, and you want to reduce side setback requirements, eg.) 

It's just much easier for everyone, including the tenant. 

It may be easier to include utilities in the rent.