As confirmed in The Making of WandaVision (2021), the main sitcom homages for the show, in episode order, are Dick van Dyke Show (1961), Verliebt in eine Hexe (1964), Drei Mädchen und drei Jungen (1969), Familienbande (1982), Malcolm mittendrin (2000), and Modern Family (2009). The creators of the show have stated that they tried to focus on family sitcoms.
Agent Jimmy Woo produces his identification with a flick of the wrist, the card appearing in his hand as if by magic. This is a reference to the character's first appearance in Ant-Man and the Wasp (2018) where he is shown to be instantly fascinated by Scott Lang's mastery of close-up magic, but completely unable to do any tricks himself.
Cinematographer Jess Hall used 47 different camera lenses for the seven time periods covered in WandaVision, many of which were modern lenses custom-modified to keep characteristics of the actual period lenses. Lighting was adjusted to align with the periods being portrayed. Tungsten lights were used in filming the 1950s-1970s era episodes, as they were commonly used in production during that period. LED light was used for scenes depicting the modern era, as Hall explained that was "the correct time line for when this equipment entered the filmmaking vocabulary."
In order to preserve the authenticity of the '50s era sitcom vibes the show was trying to capture, Bettany was painted blue for the scenes shot in black and white, rather than maroon, because blue looked better in grayscale.
The series is inspired by various Marvel Comics' stories: "The Vision and the Scarlet Witch" (two series from the 1980s), "House of M" (a 2005 limited series and cross-over story where Wanda creates an idyllic alternate reality) and the 2016 series "The Vision" (Vision 'retires' to a suburban life and creates a Synthezoid family).