Anyone built a coach house yet? ADU

[Henry Lazerow]

Has anyone built a coach house as an ADU yet? In many areas this can add 3-400k of value. Curious what the costs/quotes have been, options? Been thinking of various ways to create value in deals.

[Prashanth Mahakali]

@Jonathan Klemm We have one project that is almost complete with the ADU process permit and construction.

Unfortunately, i cant share more information about this particular project than saying it was easy since it was a full on new construction project. Problems arise when you have an existing primary building and you are creating a new rear yard ADU. The most important things to consider for a rear yard ADU are mostly below ground issues:

1. Underground electrical service to the main building and how to split the service panels. Does this mean overhauling the entire electrical service of the main building? 

2. Sewer and water piping and cause for upgrades due to adding a new unit? This will depend on the field inspectors. Logistical issues as to how do you get the water piping from the front building into the rear building or add a separate line outside the front building through the side yard so you don't have to open up the basement slab. 

This is something i have been passionate about from the very beginning. I would only recommend the rear yard ADU project ONLY if you have a higher budget since you WILL have surprises as the pioneer.