Getting a pull-down ladder installed changes how you use the upper storage space instantly. No more awkward balancing acts in the hallway with heavy bins. A pro usually knocks this out in half a day, and booking it in the fall before the winter rush hits makes it easier to lock down a good local handyman.
Before you commit to anyone, get at least three quotes. Prices swing wildly for small carpentry jobs, and comparing a few estimates keeps you from overpaying for a couple of hours of work.
That 0% intro window is a firm deadline, not free money. If you still have a balance left when those 18 months are up, the remaining amount gets hit with standard interest.