These are two commonly culprits, especially depending on the pipe material and age of the sewer.

I like medical buildings given the ageing population with Fortune 500 tenants.

@Eamonn McElroyFor ages individuals and businesses have bartered to get services and goods they want or need.

The age of the property would put it in a safe harbor, however of note you would need an "intrusive" or sometimes called "forensic" addendum to the needs assessment (PCNA) that reviews major building components like the breakers and sewer lines for adequacy. 

Maintenance and capex 8% is pretty close depending on age and condition.

Some areas will limit the number and/or age of mobile homes placed on the land.

The only real contract executed was the actual lease which does not allow pets.My change of heart lies in: 1.) their reveal that they won't be staying 2.) so little time left in their lease anyway (they have 8 months left). 3.) deeper thought about not knowing the breed, size, age, or being able to meet the dog.4.) new revelations about insurance policies5.) deeper thought about what this means for the other tenant of 2 years who may renew. 

I think a look from your perspective as being a similar age will be valuable for our students, showing them how real it is to get started and become successful in this business.

Do you consistently use 23% of do you vary that higher or lower based on age and anticipated maintenance?

If a fully remodeled comp sold for $450K and your potential listing meets the same criteria in terms of age, finish, features, then you should comp out at something similar to that higher number as that property is more of a match.