This just varies really.If an agent is giving credit for a stove for 500 and the commission is 10,000 then that is different from a 75,000 house and a 2,250 commission.The agent isn't getting all of that as you have the broker split and any reduction the agent agrees to without the brokers consent will be taken out of their portion.

Also, they may not enter into a property without consent from the owner (in writing).

I too have been thinking about forming an LLC to use to purchase a multi-family property.One thought which may be worth considering, if you are single and plan to marry in the future, by having your real estate assets in a LLC, any future deals related to that real estate would NOT need the consent of your future spouse. 

Tenant agrees to not install or causeto be installed any aerials, antennae, cable, dish or other telecommunicationequipment without prior written consent of Landlord. 

If that is provided and all looks good, they will certainly give you the benefit of any doubt and their consent. 

It is undisputed that the [Rental Dwelling Code] affords no warrant procedure or other mechanism for precompliance review . . . the owners and/or tenants of rental properties in Portsmouth are thus faced with the choice of consenting to the warrantless inspection or facing criminal charges, a result the Supreme Court has expressly disavowed under the Fourth Amendment.”

Just go to the lender and get their written consent.

The lender, if any, must give consent.

., they generally can't release it without both parties consent, so off to court you go. 

In the post it does not sound like you were given consent nor do you have any form of documented consent for what ever goods or services you delivered associated with the real property.