My husband and I are disagreeing about subleasing our apartment for the summer (we have the permission of our landlord).

I doubt he would have done that without permission from the bank, but of course people do the wrong thing all the time.You have two choices. 

You want to have a feel for what your capital expenditures are likely to be in the near future, and also the types of things you will likely have to address once the current tenants move out.I find it helpful to take a video while I am walking through, always ask permission first. 

With real estate it really isn’t better to beg forgiveness than ask permission.

In order to get it on the MLS I need the sellers permission.

I am trying to be as honest as I can in this scenario because the tenant in the duplex I just acquired (roll over lease) got a dog without permission and against his lease.

Until you do, you can't (without permission, etc.) work on someone else's property.

If you're a member of the RLS, you should know the RLS rules which prohibits you from directly contacting the owner of an exclusive listing without the permission of the exclusive listing agent.

A few days ago a handyman that I was unaware of rang my doorbell saying that my neighbor wanted to install their version of the privacy screen (2x as tall) and asked for my permission to enter my backyard to complete the installation.

Well it’s interesting that almost all the violations consisted of MARKETING a property either without holding a license and or without the owners permission.