You may declutter your home and be able to see the countertops, but the reality is that clutter may come back if you don't understand and consider why it happened, how it got there, and how to avoid it going forward.
For example, if you plan to sell something, you need a place to take a picture of the item and then a place to put it while it waits for the sale. No, it doesn't go back where it was.
Encourage your housemates to be part of the new plan. If they don't want to be part of your plan, you must determine how you can live with their decisions.