Studio Office in Backyard

[Cricket Jackson]

We're considering a property that has a very nice studio office in the backyard totaling 144 sq ft. It's about 10% of the main house's square footage so it adds quite a bit of space.  It currently is not temp controlled, but we'd be putting a window unit in for that.  Do you think this would add rental value for someone looking for office space or an extra playroom?  Our family would jump on it if we were looking to move, as we both work from home and homeschool, but my husband thinks many people would rather have the extra yard space.  Determining the rent for the main house is no problem, but backyard living spaces are not typical in our area. Thanks!