Private company

ONL

Logo: oosterhuis.nl²

ONL is a Dutch architectural firm founded in 1988.¹ It was founded by Ilona Lénárd and Kas Oosterhuis.¹

Last updated Oct 21, 2026.

Overview

1988Founded¹

Websiteoosterhuis.nl

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The story

Founded by Ilona Lénárd and Kas Oosterhuis in 1988.¹

Leadership

Who has led ONL, and when. Pick a name to see everywhere that person has worked.

FounderIlona Lénárd¹
FounderKas Oosterhuis¹

Timeline

1988Founded Founded¹

Links

Websiteoosterhuis.nl¹
WikidataQ130126493

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataONL on Wikidata
2
Company websiteONL logo