Good to hear a positive experience. Do you remember what options you selected when buying the building? Is there anything you wish you would have changed? Also, do you have any pictures or maybe a build thread? Thanks!
I'll see if I can round up some pictures tomorrow. I did find the invoice for options...
24x36x12 (it is actually 35 on the footprint and overhangs 6" on each end, something they don't really explain well). Boxed eaves. My area does not require certified plans. All sides enclosed (2 sides, 2 ends). 2 10x10 rollup doors, 1 on side (was $100 extra to install on side), 1 on end (pictures will explain layout a little better). 1 windowless man door. All in was $7,860 from Carolina Carports.
Paid $3500 to have slab poured, including cement. 4" everywhere except one 12x24 bay that was poured 6" for the lift.
$1850 for stud depth open-cell spray foam insulation. It is tight as a full tick except for gaps at the top of the rollup doors. Perfectly bearable even in the hottest summer conditions, especially with both doors open and a cross-wind coming through (one of the reasons I did my rollup door configuration the way I did).
I had about $1300 in electrical materials and trenching (with a bunch left over to run more circuits as needed later), and paid $150 for 14 used t8 light fixtures from a coworker who was going to throw them out. It did take a FULL weekend and then some to wire it, but electricians were asking $5k to wire it. So I learned (with help and guidance of an electrician friend and the internet) how to wire it myself. Comes in handy when I need to add circuits.
As far as the build goes, there really isn't anything I would change for what I purchased. I would add some sort of interior wall covering like painted OSB or something for the bottom usable space (and still plan to do so). Insulation is a MUST, and I highly recommend and endorse the spray foam variety. My biggest snafu was not installing electrical right away. Waiting just a couple of months to get bids, then waiting on insulation, then planning out my own electrical install when the bids gave me a heart attack... The shop quickly filled up with stuff, and that made running the electric a nightmare. Stuff was constantly in the way, and we had to get creative with running conduit.
The shop was a game changer for me and my friends. Combined with the 4 post lift, there isn't much we can't/haven't been able to do. It is not a showcase, it is a working, very functional garage. Combine the fact that me and my friends enjoy working on mechanical things with being incredibly frugal (OK, that's too nice, I'm CHEAP), the shop has served me perfectly.
. I am finishing the walls out slowly with glass batting and stick walls covering in dry wall and painting, but that's more hobby than necessity
. I'm still in the building for under $20K but that doesn't include any of my labor. I had electricians run the 100 amp sub panel then I set all the outlets and lights. I also added a 10 x 20 carport on one side along with a small pad for the compressor.