@Alexander Rodriguez so, the challenge is all you know about is the dog damage - there may be more:(Would NOT recommend letting them try to fix the floor damage - they will just make it worse, or may even hurt themselves and sue you.Pet urine is NOT easy to remediate.

It sounds like the other additional issies related to the existing structure would also require some significant work for remediation, so there is definitely more to be analized in terms of the existing structure.In regards to wrecking the existing structure and building new, that would definitely be the easiest thing in terms of a Code Compliance perspective; however, I assume the financial portion of a project of that scale would be significantly more than any renovation work you want to do the existing structure.In terms of trying to add a 2-story addition onto the existing coach house structure(or any type of addition), this would Not be permitted without obtaining significant Zoning Variations (which have no guarantee of approval).

I was doing insurance remediation after the Northridge EQ in 94 and we had jobs we didn't get to for two to three years after the EQ.

The house should be replumbed ( plumbning is not covered), water restoration and remediation works needed ( should be covered.

Since there were no vents and clear signs of moister, I made the appraisal "subject to" proper ventilation to be installed and for the ponding water to be remediated. 

I learned this by subbing to remediation companies.

Even after a week of moving in, she didn't do anything other than putting some bowls of coffee on the floor to remedy the smell.

No structural no foundation repairs, no termite infestation or other insect infestations, no mold remediation, no roof replacement, no septic).

If you get a restoration company to come in and get all the issues remediated, and they sign off on it, then I don't see how you could be liable if something happened in the future as a result of the fire damage. 

How much does floor one want for the damage.A hole in the ceiling with Spackle, the splatter finish matched (possibly whole room ceiling re splattered), then a primer and paint; or just water discoloration remediation?