Anything you would've done differently now that it's been completed for a while?
I'm looking hard at doing a 20x24ish size shop in my backyard and I'm stressing out! The place is new so I've been getting concrete bids for the side-yard but I just keep going back to the idea of doing a shop in the back corner before I commit to a bunch of $ in concrete that will have to be torn out.
Did your contractor do all the legwork for you? My current struggle is all of the permit/city approval, HOA approval and just trying to be smart about planning for the future. I have a 7.5' PUE&DE easement on the back line and 5' on the side- even though there are no utilities there and never will be. When it comes to sheds, West Jordan City says cool, build what you want but just know it will have to be moved if there's an issue. Anything over 200 sq ft they just say NOPE. Ugh. I guess I need to research doing a vacation of easement but WJC isn't being very helpful.
The other struggle is the HOA says max overall height is 12' which is ridiculous. I'm trying to get an exception while the HOA is still "young" but we'll see. It's just hard to get a decent wall height while keeping a good pitch for snow load. First world problems, I know.
As always, there are a few things I would've done differently.
1) like you I have easements on both the back and the side of my garage (5' on both) While I honestly don't mind the easement, I wish I would've had the retaining wall tucked much further back to the actual property line. As it is now, the east side of my garage is on an angled property line...so I had to set the 5' from the front corner....which means about 7' on the back corner. The guy doing the excavating and wall build didn't go back as far as I wanted, but it was a good deal, so I kind of just deal with it....but I ended up with 2' of clearance at the front of the garage and 4' or so on the back. This makes the side less than ideal for storage. If they hadn't put about a 3' planting area on the top of the wall, I could've had more storage area, that was easier to access all around. 5' easement would've been kind of nice in that regard because it would've given me flat storage space if they had tucked the wall as closer to the property. The easement in your case, if you poured concrete would give you nice storage outside the shop for things that may not need to inside. a lean to roof over it that could be removed if required could keep it at least covered (build this after you get everything passed off lol)
2) I wish I would've gone bigger. I know this is a standard statement. I ended up on 24x26. It allows me to fit my truck, and will fit a crew cab long bed in it, without any storage in the front of the truck....but I do wish I would've gone to a 26x26. This would've made the side walls better for storage while allowing to park in. Since this is a "shop" for you, I don't think that is as a big deal for you.
3) I wish I would've stuck with the storage trusses in the attic style, as I had imagined. This was a miscommunication on my end and I just assumed it was how they would be. The storage in the attic is very nice, but the webbing limits it a little bit.
4) I wish I would've setup a mini split for the heat/AC instead of a gas fired heater. The gas fired heater works, but it takes up a little bit of storage when it comes to height, and I don't have any form of cooling for summer.
Overall I'm very happy with the garage. It is not only a garage and somewhat of a workspace for me (still setting up things, so I'm not using it too much yet) It is also a hangout space for my wife and I and adult friends. We've had game nights out there and it was awesome. The GC handled everything except the permit. I took care of that myself because I may have been building it myself. His subs were decent, but not great. His electrician has caused me a few issues that I haven't gotten responses on. The electrical was signed off, but he didn't install the flashing under the shingles, and the rubber gasket cracked and blew off the roof.
AS for your situation. 12' height isn't horrible. It's not ideal....but depending on what you want out there, scissor trusts would help with ceiling height. I believe my garage, at 24' wide and a 5/12 pitch is 14' to the peak with 8" stem wall. Granted, I think petitioning to the HOA to allow a variance would help...but I think 10' walls and a 4/12 pitch will put you at 15' or so...so it's not drastic. Maybe you could dig down the yard a little first, to reduce the overall visible height from the street/neighbors. The higher walls would likely be more beneficial if you made the garage longer so it could be an RV parking for someone in the future. Otherwise, I think, while nice, with scissor trusts, you could likely have a lift in the middle and not have issues if that's what you are going for. Or, better yet, build a mechanics pit in floor to not have to deal with the height.