The interiors of Knots Landing were filmed at MGM/Warners studios. The set designers and decorators really tried to make the character's homes fit their personalities and station in life. For example, the Fairgates were a long married couple with 3 children. The decorators felt that Karen would have sensible, "family proof" furniture, that would reflect the current middle-class trends. The Wards were a newly married couple, so for the earliest episodes, they did not have much furniture in their home, to reflect their newlywed status. As they added more furniture and accessories, they kept it trendy and inexpensive. The Avery's were a couple who were into status and appearances. As such, their home was decorated in a formal, traditional style, with expensive furnishings and accessories. The Ewings furniture had been donated from Miss Ellie Ewing. She supposedly sent Gary furniture that her family was no longer using. So out-of-date, yet expensive furniture was chosen.

Often sets were changed when the character's changed. For instance when Karen married Mac, and Val divorced Gary, their homes were changed to reflect their new status.

Set Changes on Knots Landing:

Val's Home:

Season 4 - Living room is painted blue.
Ep 66 - Living room is painted mauve.
Ep 66 - Master bedroom has changed.
Ep 197 - Living room is painted yellow, and there is new wallpaper.

Karen's Home:

Ep 2 - Brown bricks in kitchen have been painted white.
Ep 14 - Overhead rack on kitchen island is removed.
Season 3 - New living room sofa's.
Ep 76 - Master bedroom redecorated.
Ep 79 - New kitchen wallpaper.

Laura's Home:

Season 2 - Her kitchen is blue (previously red), and there is new blue wallpaper, but it is the same pattern as in Season 1. There is also a new door in the kitchen leading to the dining room.
Ep 15 - Kitchen window has new mini-blinds.
Season 3 - Kitchen window has curtains.
Season 3 - Floral wallpaper in master bedroom has been replaced by grasscloth.
Ep 76 - The Avery's have a completely new backyard!

The Ward's House:

In Season 1 the living room is to the right of the front door, but in Season 2, the living room is to the left of the front door.