I have built a small "pool type" house on my estate villa. The house has a separate entrance, so where I enter the villa via my secure gates, the villa sits on the side. It has separate rooms and is completely closed off from my garden; you can only enter it from the street. I plan to rent it out to tenants.

The tenants have asked if there is a technical term for this type of property?

Below is a picture of it. You can see the building on the left. (The door and two lights)

![villa](https://i.stack.imgur.com/jz6Do.jpg)