Great looking garage! Looks like it was always part of your home. I hope you get to use and enjoy it as you see fit!
I don't have the honor of living in an HOA community, but when the city adopted the 2021 International Residential Code during the application process for my 24x32 backyard workshop, the result was almost the same. Took me 3 different sets of plans, 7 months and the Building and Zoning manager's intervention, while the Zoning Div. was out for training, to get my shop permitted. The Zoning division had stated that the roof pitch had to match that of our home, The shop needed to have the same type of stucco trim as the front of the house (even though it's in the backyard and I couldn't install a standing seam metal roof, but had to shingle to match. When the manager looked over my plans, he asked, "It's just a shop, right" and signed it off immediately. The pitch requirement would have negated the scissor trusses required for my lift, even though they had previously negated earlier plans with a much higher sidewall that even fit within the height requirements for roof height. I had initially wanted to put up a Versatube metal building, but that was a BIG NO! I found out later from a local GJ'er that his neighbor got approved for metal sided and roofed shop in his backyard the week after mine was denied. However, my shop is up and, sided, painted and roofed matching our home and what happens in my backyard, behind my gate, stays in my backyard. My neighbors think it's cool and don't mind that the peak is 19'6", either