My 12x16 took way more time, but I did it all myself. I mostly worked at night once the heavy loud stuff was done because of the young kid factor. But at only a couple hours a day, it took about 4 months. Although I did build mine down into a ~3 feet deep basement of sorts which complicated it (I didn’t want it visible from outside my fence). Even did off grid electric with solar to avoid needing contractors or permits. I won’t hate because I get the time trade off, and I really hate/appreciate a few trades more than before (drywall the most). For reference mine was $15k in 2025.

The main thing I’d advise people against and say you could have possibly saved on is the structure. Tuff Shed is usually over priced and could be built usually with $2k-3k of material and labor. But the time you did this may have made that hard too, all the contractors were slammed.