LMC + roller door

i've never been on this side of Penquite Road, so i've never been close enough to take a close look at this overlooked building. is it a shed? water-related infrastructure? a very small window-less house?

all i can gather is that it's something council-related, as i understand "LMC" (delightful art deco font, no?) stands for "Launceston Metropolitan Corporation". there's a similarly adorned building up in West Launceston that i might stop to get a photo of one day. any thoughts or facts about this building's purpose will receive my eternal gratitude...