Or they will wholesale it out to a disposal firm.Understand there are legal, regulatory and financial pressures to sell.

Investors getting their license is great in theory, but then you are bound to many of the regulatory standards they are held, like he mentioned.

Future market rents, maintenance costs, tax law and regulatory changes, population in your area, etc. are not a guarantee either. 

It is a lot of work and sometimes it will have setbacks and headaches but over the long term you will not regret it!  

Don't get deterred by short-term set backs.

They can help you determine what your buildable footprint/envelope is based off code, zoning, setbacks, city requirements.

I was not aware that if there was no 'release' that a tank could be left in-place, washed and then abandoned with with fill / foam inside.I get that regulatory agencies are unlikely to say there will never be any 'liability' but it sounds as if the closure report / 'no further action' letter stands as comfort to the (new) owner and any lender that the issue has been fully addressed.Oren

Also, with the lot size, 50w x135d, and the set back requirements and driveway that's in place, 1 level won't work, it'd need to be a 2 story to get the 1800 sf that would compete for the other new builds.

I am going to document my experience with this ADU here, so other people might find it useful.This is the exterior of the front of the house, which was remodeled in 2011-12 completely.The backyard is pretty big, and the proposed ADU is 640 sf detached from existing.The original plan was submitted and comments come back with some planning questions about size of the lot, setback requirement etc.

Reserves and funds set back for taxes and insurance are simply a matter of bookkeeping entries.