The house is finished and we moved in a week ago. However, the exterior work has not yet begun, and we have not yet found a satisfactory proposal. Now we can't use the garage because it is 15 cm above the gravel in the yard. Does anyone have any ideas or experience on how to get cars into the garage until the yard is paved (hopefully this year)?
I've had preliminary gravel in the shape of a wedge on my property..... It's been going on for a while.
Deliver the gravel. You'll need it later for leveling/supporting under paving anyway.
Just google about curb ramps. After getting a total of $100, you're done.