Detail items for dimensioning room boundaries

Hi, I’m trying to dimension the room boundaries in my project by using detail items. These detail items are used for ‘purchase drawings’ and I was wondering if there possibly could be a way to automate this process with Dynamo?

Anyone have any thoughts or ideas which could get me started working on a script?

This should get you started:

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This will indeed get me started, thanks Jacob!

I have made a script now where I get to place the detail items with the right start- and endpoints. the problem now is that the detail items are being placed exactly on the outer lines of the room. How do I change the location of the placed Family Instance? I have used the node Element.Location+ from the Clockwork package but I don’t really get how to continue from here?