My point was that you could try to think of your storage unit as if the size and monthly cost of your home was more flexible, i.e. you can just pay 2% per month for 2% more space.
When you chose your house there were presumably several options with different amounts of storage space at different price points. You could just treat the addition of a storage unit as increased granularity between those housing options.
When you chose your house there were presumably several options with different amounts of storage space at different price points. You could just treat the addition of a storage unit as increased granularity between those housing options.