Question: In what year did Gerrit Rietveld, a Dutch furniture designer and architect build the Rietveld Schröder House?

Context paragraphs:
Stani Michiels: Stani Michiels is a visual artist and architect, who was born in 1973 in Geel (Belgium).  He lives and works in the Netherlands (Amsterdam).  Stani got a master's degree in architecture at the Catholic University of Leuven (1991–1996).  Afterwards he studied art at the Gerrit Rietveld Academie (1998–2001) and Rijksakademie (2002–2003) in Amsterdam.

Gerrit Rietveld: Gerrit Thomas Rietveld (] ; 24 June 1888 – 25 June 1964) was a Dutch furniture designer and architect.  One of the principal members of the Dutch artistic movement called De Stijl, Rietveld is famous for his Red and Blue Chair and for the Rietveld Schröder House, which is a UNESCO World Heritage Site.

Paul Mijksenaar: Paul Mijksenaar (born 1944, Amsterdam) is a designer of visual information and is founder and director of the international design Bureau Mijksenaar, based in Amsterdam and New York City.  In 1965, he graduated from the Institute for Applied Arts Education Amsterdam (IvKNO, later the Gerrit Rietveld Academie) in product design.  He started off as a freelance product designer in 1966, then as a senior designer and team leader for the Associatie voor Total Design NV (or Total Design) in 1978 before establishing Bureau Mijksenaar in 1986.

Gerard Unger: Gerard Unger (born 22 January 1942, Arnhem) is a Dutch graphic and type designer.  He studied at the Gerrit Rietveld Academie in Amsterdam from 1963–67, and subsequently worked at Total Design, Prad and Joh.  Enschedé.  In 1975, he established himself as an independent developer.  He lives and works in Bussum, Netherlands.

Frans Schrofer: Frans Schrofer (born 15 August 1956) is a Dutch furniture designer and industrial designer based in The Hague, Netherlands.  He received a technical education in Leiden and then studied at the Design Academy Eindhoven, graduating in 1983 and founding his own design studio, Studio Schrofer, in 1984.  He is known for a sculptural approach to furniture design, conscious use of materials, practicality, ergonomics, technical knowledge and for pioneering a modern, design-led approach to garden furniture styles.

Wim Rietveld: Wim Rietveld (Utrecht 1924 - Badhoevedorp 1985) was a Dutch industrial and furniture designer.  His father was the well-known architect and designer Gerrit Rietveld.

Rietveld Schröder House: The Rietveld Schröder House (Dutch: "Rietveld Schröderhuis" ) (also known as the Schröder House) in Utrecht (Prins Hendriklaan 50) was built in 1924 by Dutch architect Gerrit Rietveld for Mrs. Truus Schröder-Schräder and her three children.

Truus Schröder-Schräder: Truus Schröder-Schräder (1889-1985) was a Dutch socialite and trained pharmacist who was closely involved with avant-garde artists and architects of the De Stijl movement.  Gerrit Rietveld and her built a house for her and her three children — the Rietveld Schröder House — which is today a UNESCO World Heritage Site.

Gerrit Rietveld Academie: The Gerrit Rietveld Academie (Rietveld School of Art & Design) is a Dutch academy for fine arts and design in Amsterdam, Netherlands.

Rietveld joint: A Rietveld joint, also called a Cartesian node in furniture-making, is an overlapping joint of three battens in the three orthogonal directions.  It was a prominent feature in the Red and Blue Chair that was designed by Gerrit Rietveld.

Supporting paragraphs: Gerrit Rietveld Rietveld Schröder House
Answer: 1924