The house is in a bad shape and looks like it will not be worth restoring it.

This is why we contractually require that tenant/buyers enter into, pay for and maintain credit restoration during the specified term.

The Act also prohibits housing providers from refusing residency to persons with disabilities, or, with some narrow exceptions, placing conditions on their residency, because those persons may require reasonable modifications or reasonable accommodations.With respect to reasonable accommodations and reasonable modifications: * The Act makes it unlawful for any person to refuse “to make reasonable accommodations in rules, policies, practices, or services, when such accommodations may be necessary to afford . . . person(s) [with disabilities] equal opportunity to use and enjoy a dwelling.†* The Act makes it unlawful for any person to refuse “to permit, at the expense of the [disabled] person, reasonable modifications of existing premises occupied or to be occupied by such person if such modifications may be necessary to afford such person full enjoyment of the premises, except that, in the case of a rental, the landlord may where it is reasonable to do so condition permission for a modification on the renter agreeing to restore the interior of the premises to the condition that existed before the modification, reasonable wear and tear excepted.â€It is important for all real estate professionals to remember that the federal Fair Housing Act prohibits discrimination in housing on the basis of race, color, religion, sex, familial status, national origin and disability.

the pain is overretain good tenantsand just write-off the losses as 'bad debt'When gone, at least I can work on restoring the apt and get another good tenant.

There are places like Habitat to Restore which often have smoking deals on things you use for every rehab.

Landlord may charge Tenant for restoration of the Premises to the condition it was in prior to any alterations/improvements.”So if your mom’s lease had similar clauses, and she didn’t have the necessary written permissions from her landlord agreeing to the alterations over the years, then she could be charged. 

However, I've watched historically important cars (vintage racing Ferraris, for example) be restored from a heap of burnt tubing, with a good serial number, to a gleaming jewel worthy of exhibiting or historic racing...at a cost of $1MM +.

If this house was restored and next door to my home in Hollywood, CA it would go for $2.5-3 million.I have 5 properties under contract.

The white paint and the OSB used on the sub floor tell me someone has already attempted at "restoring" something and the mold could have easily not been addressed in a professional manner. 

I owned a carpet cleaning / water damage restoration company for 10 years.