Usually the seller is aware of the deficiencies, is unwilling to make these changes prior to the sale and will restrict a sale to "cash only". 

While weed did get legalized, and, yes, there are stores all over the place (the Denver Post has a map, if you're curious), several state legislators were recalled over their actions to restrict gun ownership.  

My city has severely restricted MH permits lately, and in most cases, even if a MH is already on the lot they will not allow the owner to replace it with a newer model, even if it's going on a permanent foundation.

Both allow you to search closed listings with a number of restrictive perimeters (geographic, size, price, etc.)

Some REO banks and Home Path have 60-90 days deed restrictions.  

That is a lot to unwind and very time intensive from  a mortgage broker or a commercial real estate brokers perspective.First you have to check if there are any deed restrictions, trusts set up, etc. to where she just gets a payment each month.

This is not advisable for most because, from a practical side, there may be clauses that restrict or interfere or are later modified concerning the trust corpus such that I'd never want to be left holding that bag. 

Now they have private meetings with Borough council and codes department trying to convince them they need to target landlords and now restrict certain types of people renting in the town. 

This is fairly common where HOA does not allow renting a condo during the first year of ownership.I usually just move on.However there is a property with such a restriction, but the current owner has been there a while and has been renting, the property is for sale but there is an existing tenant and the lease does not run out for another 8 months. 

So, each band is restrictive in that manner.Interestingly enough, there was just an article about the mid level price band of assets and potential consumers being under served.