How much does a shop build add to property value?

[Michael Burnside]

I built my home 3 years ago. I built an attached ADU of 1k sq-ft for my in-laws and I built a 1.5k sq-ft detached shop. The ADU added 250k to my home value. The shop added 0k. My realtor/appraiser friend told me that shops do add value, without question, and will likely pull in some dollar amount when being sold but they are not strickly something tangible like an additional living space. That said, I did build my shop to have an 18'x12' door so that if I ever sell, someone with an RV or boat could repurpose the space easily. Thereby increasing the pool of potential buyers for my home. I have no plans to sell, but it was a consideration when I built it

If anything, my shop costs me more since I have a rider on my insurance policy to cover all the crap inside LOL.