Young couple choosing the right color for their wall in new apartment.

The amount of time your project will take depends on the size of your room, how you’re painting, and your skill level. For instance, using a dark shade on the walls and painting the ceiling and trim will take longer than just doing the walls in a neutral. While some spaces can be done in a few hours, others may take several days. Be sure to budget more time than you think the job will need and don’t forget to take prep and cleanup into account.