'21 Kona EV, '21 Bolt
ohhhh wow I should really read the whole thing I thought this was his parents house or something.^ yeah, grading and downspout extensions will help, but if it's odler construction and the pad has no vapor barrier and the walls are exposed cinderblock, it's still going to be moist AF.
One other thing, since I forgot it in my original suggestion (moisture stop the floor), if you see water ACTIVELY dripping into the garage from the wall, use some hydraulic cement and a trowel to plug it up, then cover everything with some moisture barrier paint; I used a 5 gallon jug of DryLok Extreme cinder block paint. Get the biggest, stiffest ( ) brush you can, it's a workout to put that stuff on since it's like syrup.
Up to you, I know you said it's not your garage but $150-200 in materials and a weekend will make it a LOT nicer place to be, and protect your investment. Talk to your landlord, they may even reimburse you for materials. I had an apartment like that once, the first few months I barely paid any rent since I was just fixing everything. When I left that place, they jacked up the monthly rent payment since it was so much nicer; they got free labor, I got a nicer place to live, win win
Yeah so I'd get a car cover and call that garage lost space, personally, and bug the landlord to look at it! Even grading and gutters cost more money then you as a renter are willing to shell out.