If the dreamer sees himself going up to garret, then such dream indicates the growth and increase with his finances.
Dream dictionary: Garret dream meanings
Dreaming of climbing to a garret, denotes your inclination to run after theories while leaving the cold realities of life to others less able to bear them than yourself. To the poor, this dream is an omen of easier circumstances. To a woman, it denotes that her vanity and sefishness{sic} should be curbed.
…to a dream that occurred to him when he had sunk as low as any man could sink.”I had squandered two entire fortunes in drink, he said,” and, from living in a house of my own in Cadogan Gardens, was reduced to a garret in the South Lambeth Road. Not being brought up to any profession or trade, and having a serious physical defect, I could obtain no regular employment, but had to look out for odd jobs, such, for example, as carrying bags, opening carriage doors, and cleaning the brass work and windows of public, houses; and all the money I received I spent in drink. My wife had very rightly and wisely obtained a divorce from me. I was dead to all sense of decency and shame, and God alone knows in what act of outrageous devilry my wickedness might not have culminated, had it not been for…