His primary mortgage was sold to a private lender in the early 2000s and he claims he had to give an explanation each time as to why he financed with a private lender with such poor reputation every time his credit was pulled.

Unless you said something to her about NOT renting to her because she's single, what is she basing the claim on? 

You must generally file Form 3115, Application for Change in Accounting Method, to request a change in your method of accounting for depreciation.The following are examples of a change in method of accounting for depreciation.A change from an impermissible method of determining depreciation for depreciable property if the impermissible method was used in two or more consecutively filed tax returns.A change in the treatment of an asset from nondepreciable to depreciable or vice versa.A change in the depreciation method, period of recovery, or convention of a depreciable asset.A change from not claiming to claiming the special depreciation allowance if you did not make the election to not claim any special allowance.A change from claiming a 50% special depreciation allowance to claiming a 100% special depreciation allowance for qualified property acquired and placed in service by you after September 27, 2017 (if you did not make the election under section 168(k)(10) to claim a 50% special depreciation allowance).Changes in depreciation that are not a change in method of accounting (and may only be made on an amended return) include the following.An adjustment in the useful life of a depreciable asset for which depreciation is determined under section 167.A change in use of an asset in the hands of the same taxpayer.Making a late depreciation election or revoking a timely valid depreciation election (including the election not to deduct the special depreciation allowance).

Estimates are way way over $100k in repairs and they claim in the appraisals that you can do a roof, paint, flooring, new ac, pool replacement plus pump and plumbing, 100' fence, new kitchen, remodel 2 baths and all new flooring as well as re plumb the house in a 2200sf house for.... $45k!

I'd like to get a reference (or two) for law firms that provide advice that will include an insurance claim for a fire which started in a neighboring tenant's trash bin they leaned against my 4-plex. 

Their quotes are enticingly low, but I'm pretty sketched out by how I can't find a single post-claim review.

Three days before the eviction hearing she filed a stalking claim against me.

You should also look into your options if a tenant claims radon issue.

I have access to loans at 2%.I have had multiple contractors tell me that my roof will be eligible for an insurance claim due to shingles with storm damage.

You can take him to small claims if it is under 12k.