The year 1852 in architecture involved some significant architectural events and new buildings.
- February – Augustus Pugin suffers a breakdown and is admitted to a private asylum, Kensington House, London, days after designing the clock tower for the Palace of Westminster.
- June – Augustus Pugin is transferred to the Royal Bethlem Hospital.
- date unknown – Thomas M. Penson restores a house at 22 Eastgate Street, Chester, England, in black-and-white Revival style.
- January 1 – Battle railway station, East Sussex (England), designed by William Tress, is opened.
- February 3 – The House of Commons of the United Kingdom in the Palace of Westminster, London (England) designed by Charles Barry and Augustus Pugin, is opened.
- May 15 – Teatro Comunale Alighieri in Ravenna, designed by Tommaso and Giambattista Meduna, is opened.
- October 14 – London King's Cross railway station, designed by Lewis Cubitt, is opened.
- Helsinki Cathedral, Finland, designed by Carl Ludvig Engel, is completed.
- Chapel of St Edmund's College, Ware, England, designed by Augustus Pugin in 1845, is completed.
- Rolle Mausoleum, Bicton, Devon, England, reconstructed by Augustus Pugin, is completed.
- Siegestor (Victory Gate) in Munich, Bavaria, designed by Friedrich von Gärtner, is completed by Eduard Mezger.
- Åmodt bro suspension bridge, Oslo, Norway.
- Philippi Covered Bridge, West Virginia, United States.
- June 25 – Antoni Gaudí, Catalan Modernist architect (died 1926)
- July 4 – E. S. Prior, English Arts and Crafts architect and theorist (died 1932)
- May 7 – James Savage, English architect (born 1779; buried in his St Luke's Church, Chelsea)
- May 8 – Giuseppe Jappelli, Italian neoclassical architect and engineer (born 1783)
- July 5 – Matthew Habershon, English architect (born 1789)
- September 14 – Augustus Pugin, English architect, designer, artist and critic (born 1812; "convulsions followed by coma")
- Hill, Rosemary (2007). God’s Architect: Pugin and the Building of Romantic Britain. pp. 482–490.
- Pevsner, Nikolaus; Hubbard, Edward (2003). The Buildings of England: Cheshire. New Haven; London: Yale University Press. p. 38. ISBN 0-300-09588-0.
- "No. 22 Eastgate Street and Row". historicengland.org.uk. Historic England. Retrieved 2017-02-12.
- Jackson, Alan A. (1985). London's Termini. Newton Abbot: David & Charles. ISBN 978-0-7153-8634-7.
- Covered Bridges in West Virginia. Morgantown, West Virginia: Institute for the History of Technology and Industrial Archeology.
- Massó, Juan Bergós (1974). Gaudí, l'home i la obra (in Catalan). Barcelona: Universitat Politècnica de Barcelona. ISBN 84-600-6248-1. pp 17–18