I spoke to a demo contractor and they estimated that demolition of the interior could be anywhere from $60k-$100k and could be as much as $200k if there are environmental issues (Asbestos) which there assuredly are.

Those fees are allocated to the appraisal, environmental reports, and legal fees so it's a much easier pill to swallow.

Typically environmental engineering firm?

I would however make sure to get a Phase I Environmental Site Assessment.

Cloth diapers can save a lot of money, as well as be environmentally friendly.

Have you considered environmental lobbyists and community activists taking you to court over almost anything

@Sean Wilt It would be best to get an environmental testing company out and take samples of any areas you plan to remove for the renovations. 

Permitting can take anywhere from 60 to 180 days depending on design of the ADU, the configuration of that lot, environmental conditions, and other related development issues and matters.

Well after their environmental "study" we had to keep 30' back from a bunch of good for nothing thorn trees to preserve some alleged rare species of bird (probably sparrows ,lol). 

I am an environmental engineer by day and water and sewer is my wheelhouse.