For those of you who've built a shop, how much value did it add to the property? For instance, if a shop costs $150k, can the property value increase the same? Less? More? I know there's many variables. Thought maybe some of you have been through this, having built a shop then had property value reassessed.

My wife and I are looking to buy a property with a home, and the question is if we should look for one with a shop, or without and build a shop.