Maybe buy them a Gift Certificate to a nice restaurant for the right to do this.Placing it on a public way will get them removed and potentially you in trouble and your investments placed into harms way possibly.

They are expensive but as soon as you get your certificate of occupancy and one tenant you can get a regular homeowners policy.

You will at the very least need a death certificate, and an estimate of the value of the property at the date of death.

Especially to do it right and get Leeds Certification. 2) A lot of the building techniques, products and practices are not practical, they are just there to be cool and groovy. 3) To run a house with solar requires a huge system, plus battery back-up, once again terribly expensive with a long payback that limits it to the wealthy.Not saying that there are not positives to the whole concept, of course there are, but it is just not viable, may never be, because unfortunately, money is the driver as always.

You need a certificate saying it’s been tested post abatement and passed.

Those are usually the only two surprises that will affect a worst case scenario, assuming you've gotten good numbers for other construction expenses and have a realistic schedule for completion of construction and issuance of a certificate of occupancy. 

You need to be listed on the policy as an additional insured and a certificate holder.

Also if the state specifically states probate files but doesn't mention death certificates etc, again another source.

If it is loaded with stuff, I will contract the tax lien purchaser to let him know we are going to redeem the certificate, how much do they need.

Deconstruction would also get you far along the path for LEED certification.