Isak Gustaf Clason
Illustration — Clason with his wife, 1915 • Illustration — Östermalmshallen indoor market at Östermalmstorg • Illustration — Bünsow House at Strandvägen • Illustration — Nordiska Museum, Stockholm • Illustration — Original sketch to the courthouse in Norrköping Isak Gustaf Clason (30 July 1856 Falun – 19 July 1930 Rättvik) was a Swedish architect.
Also recorded as Isak Gustav Clason
Isak Gustaf Clason

Arkitekturmusset · Public domain
- Born
- 1856 · Stora Kopparberg parish.
- Died
- 1930 · Rättvik parish.
- Nationality
- Sweden
- Occupation
- architect · university teacher
- Education
- Royal Institute of Technology
- Known for
- Nordic Museum · Hallwyl Museum
- Honours
- honorary doctor of the University of Uppsala
VALÉORINE Encyclopedia
VALÉORINE documentary reading
Documentary summary
Illustration — Clason with his wife, 1915 • Illustration — Östermalmshallen indoor market at Östermalmstorg • Illustration — Bünsow House at Strandvägen • Illustration — Nordiska Museum, Stockholm • Illustration — Original sketch to the courthouse in Norrköping Isak Gustaf Clason (30 July 1856 Falun – 19 July 1930 Rättvik) was a Swedish architect.
Admitted source layer · organised and presented by VALÉORINE
Reference Check
Propose documentary evidence for Isak Gustaf Clason. A contribution is never written directly as fact: identity, source, rights and evidence gates still decide.
Sign in to contribute
World of VALÉORINE
Documentary connections
Only confirmed graph relationships appear here. Images are shown only when their identity and reuse rights both pass the documentary gate.
Documentary evidence
Documentary basis
Authority files
wikidata · Q931295 · wikipedia · Isak Gustaf Clason
In this article
Biography
Biography
Isak Gustaf Clason studied at Royal Institute of Technology. Lars Israel Wahlman is recorded as having studied under Isak Gustaf Clason. Employment is recorded with Royal Institute of Technology. Works named in the authority record are Nordic Museum and Hallwyl Museum. Work by Isak Gustaf Clason is recorded in the collections of Nationalmuseum and Swedish Centre for Architecture and Design. Distinctions recorded are honorary doctor of the University of Uppsala.
Clason studied engineering and later architecture at the Royal Institute of Technology in Stockholm, where he was a student of Albert Theodor Gellerstedt (1836-1914), and later at the architectural school of the Royal Swedish Academy of Arts, at the time headed by Fredrik Wilhelm Scholander (1816-1881). He received the royal medal in 1881 and studied abroad 1883-1886. He was elected member of the Academy of Arts in 1889, appointed professor of architecture at the Royal Institute of Technology in 1889 and became first surveyor in the Chief Surveyor's Office in 1904. He became vice president of the Art Academy in 1902 and president in 1918. He was also elected member of the Royal Academy of Sciences in 1907.
Work
Work
His first major work was the Bünsow building (1886–1888) at Strandvägen in Stockholm, commissioned by the sawmill baron Friedrich Bünsow and influenced by French Renaissance architecture. It broke new ground in its use of natural material throughout (limestone and bricks) rather than the plaster that had been dominant in Swedish architecture until that point. It also broke against conventions through its avoidance of complete symmetry. During most of the 1880s, Clason ran an architectural firm in Stockholm together with architect Kasper Erik Salin (1856–1919). He designed the house at 14 Österlånggatan (1888-1889) and Adelsvärd House (Adelswärdska huset) at Norrström in Stockholm (1889). They also designed Östermalmshallen (1889), the indoor market at Östermalmstorg in Stockholm. His largest commission was the Nordic Museum on Djurgården, in North European Renaissance style, which he began in collaboration with architect Magnus Isæus (1841-1890) but continued alone after Isaeus's death in 1890. The building was partly finished for the Stockholm Exhibition in 1897, and completed a few years later. Other designs include the Hallwyl Palace, also in Stockholm, the Rosen house at Strandvägen, and the building for Ständernas allmänna brandförsäkring, an insurance company, at Skeppsbron in the Old Town of Stockholm. Clason was also responsible for the façade of Norrlands nation in Uppsala.
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
Stora Kopparberg parish.
Birth place
Rättvik parish.
Death place
Other sources
Other sources
* *

uploaded from Portrattarkiv.se picture of Isak Clason

uploaded from Portrattarkiv.se picture of Gustaf Clason
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
reference work
Secondary witnessreference work
Secondary witness
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
Elsewhere in Design
11,558 published records in this field, each with its sources named.
- Isabelle Barratt-DeliaDesigner
- Isadore SharpDesigner
- Isaiah RogersDesigner
- Isaiah T. HattonDesigner
- Isambard Kingdom BrunelDesigner
- Isambard OwenDesigner
- Isi MetzsteinDesigner
- Isidore of MiletusDesigner
Best supported in this field
For owners
Own a work by Isak Gustaf Clason?
A specialist will read what you send and tell you what the house can establish, what it cannot, and whether the object is suited to sale. There is no charge and no obligation. The object stays with you throughout; nothing is shipped to us unless it is arranged in writing beforehand.