Is there a clause stating he can't remove the copper pipes from the wall? 

I would send a lease violation notice that advises the tenant that they have violated the no smoking provision of the lease and that it needs to be cured immediately - to include complying (not smoking) and remove any odor/damage that may have resulted.

Once your income is stabilized, you can do a refinance to remove your coborrower back off of the conventional loan. 

Title III of the ADA requires the removal of architectural barriers in existing facilities unless it can be shown that removing the barrier is "not readily achievable."

It this was my forum I would remove them without question.

This location is in a 1mm population metro area, 230 units, and cost is about $1,800,000 all in.Limits of Insurance: Coverage:Liability and Medical Expenses$2,000,000/$4,000,000 Occurrence/Aggregate Comprehensive Business Liability$2,000,000 Any One Person Personal & Advertising Injury$4,000,000 Aggregate Products Completed Operations Aggregate$2,000,000 Any One Fire Fire Damage$25,000 Occurrence Customers' Goods Legal Liability Deductible: $0$25,000 Aggregate Sale and Disposal Liability Deductible: $1,000$10,000 Any One Person Medical Payments $1,000,000 Occurrence Hired Non-Owned$300,000 Each Employee Employee Benefits Liability$25,000/$25,000 Per Claim/Aggregate Employment Practices LiabilityLoc Class Desc Coverage Limit Ded Valuation Type 1 Self-StorageBlanket Building & Business Personal Replacement Cost Property $2,100,000 $25,000Earthquake IncludedSinkhole IncludedWindstorm or Hail Included 5%Business Income Actual Loss Sustained 24 MonthsPollution Clean-Up & Removal $100,000Employee Dishonesty $15,000Money & Securities - Inside $10,000Money & Securities - Outside $5,000Accounts Receivable $25,000Electronic Data $20,000Valuable Papers & Records $25,000Fine Arts $10,000Employee Personal Property $10,000Limited Pollutant Removal $25,000/$100,000Cosmetic Loss Limitation IncludedEquipment Breakdown Protection IncludedPremium, Fees, and Taxes: BOP Premium: $ 7,760.00Optional Terrorism Premium: $ 31.00Total Premium: $ 7,791.00Key notes:a.

If you had no knowledge and they broke the lease I'd issue a notice of non renewal, but give them the option to remove the cats.

First off, all high skill requiring items let's remove those.

But given I've paid for snow removal like once ever, I don't know what I should offer someone who is not a "pro" and already has an idea of their rate. 

On the other hand, if the sisters came in and took all his stuff and he had not given you permission, you are liable.One potential solution if you end up having to go through eviction is to tell the family when the constable / sheriff comes to have their stuff removed.