When it comes to building new homes, floor plans are always at the center. Whether you’re designing them, bringing them to life, or walking them daily, they hold the key to making sure a plan’s future residents will live great lives in those rooms.

But with endless options on how to arrange a home’s most basic parts, designers can make some mistakes on the way. At the recent International Builders’ Show in Las Vegas, Tami Faulkner, floor plan design expert and owner of California-based Tami Faulkner Design, presented some of the most common floor plan design mistakes she sees when she’s analyzing new home plans.

To start, she explained to the audience that there are several categories that inform floor plan design. While circulation and flow are usually top of mind, Faulkner said designers also need to consider human factors, accessibility, adjacencies, furniture layouts, and more.

In her experience redlining plans, the biggest mistake trend item is doors. See how they can be an issue below in her top 10 list of the most common floor plan mistakes.

  1. Door locations interfering with the purpose of the space;
  2. Doors opening against other doors, appliances, fixtures, or cabinet faces;
  3. Doors, doorways, and plumbing located on bed walls;
  4. Door locations not providing visual privacy buffers for bathrooms and bedrooms;
  5. Reach-in closet depths not being deep enough for clothes to hang properly;
  6. Not establishing proper kitchen work zones;
  7. Inefficient knee space at the kitchen island;
  8. Perimeter designing with fractured views and connections;
  9. Rooms and spaces not appropriately sized; and
  10. Sufficient spatial allowances for showers and toilet compartments.