Upon consent, I do allow pets with restrictions: I have a "dangerous breeds prohibited - list available upon request" clearly stated on the lease.

We retrofitted 2 units to have fans but the cost was prohibitive and 'unreasonable'.    

You know there is a federal law prohibiting that correct?

Landlords are now PROHIBITED from taking any of the following actions against tenants:Serving a tenant with a notice to pay rent or vacate their home, orServing a tenant with a notice to terminate their tenancy when they are a month to month tenant, orFiling an eviction lawsuit against a tenant for the nonpayment of rent. 

My architect decided that fireproofing each apartment, hallway etc with 'approved' fire proof drywall etc was extensive & time/cost prohibitive.

Investing in private corporations is strictly prohibited,  particularly those controlled by the RRSP holder.  

My current residential lease prohibits commercial use and complies with City and Ohio laws.The plan is for the building to be mixed-use comprising of commercial and residential.

Wenatchee city considering reducing downtown 2nd level commercial occupancy regs.  180,000 sq ft available if not for prohibitive retro-fitting of sprinklers.  

These laws prohibit discrimination based on race, color, national origin, religion, sex, familial status, disability, and other protected characteristics.2.

Using your wife's self directed 401k to invest in a C corp RE operating company that you run would not be an "arms length" transaction, and thus be prohibited.