What is your appetite for growth? Will landlord let you make structural changes to these buildings?
Like the others, when I look at these two buildings I see a space much larger than your current building that could go mostly unused... or if the answer to the questions above are positive I can see the opportunity to turn your garage into a 6-bay operation. You could poke two holes in your current building and move out all your office/storage space to turn that into a five-bay garage. Storage space and service desk would move into the back of the new building to take more advantage of that footprint. Your lobby and other offices would sit up front. As a bonus you could add an alignment bay in the corner of the new building that juts out into parking lot.
This doesn't fix parking situation (likely makes it worse), but does add a way to grow your business into decision of other building.