He worked with his father from 1921 until Leo"s death in 1942, mostly in Leiden and the surrounding area. After his father"s death January had various partners in the architectural practice, which continued for many years to design significant buildings in the Netherlands.
Johannes Antonius van der Laan (4 May 1896 - 24 August 1966) was a Dutch architect. The practice was one of the largest in the Netherlands and specialised in work for Catholic clients in the style of the Delft School. January van der Laan"s most notable buildings (before 1942 usually together with his father):
Saint Joseph"s Old People"s Home in Beverwijk
Town hall, Eindhoven
Saint Catharine"s Hospital in Eindhoven
Church of Our Lady of Good Counsel, The Hague (1954)
Mariastichting in Haarlem
RK Industrieen Huishoudschool Mons Aurea, Haarlem (1951-1960)
Saint Stanislas" Chapel in Delft (1955-1956)
Great Convalescent Hone in "s-Hertogenbosch
Saint Joseph"s Church in Leiden (1924-1925)
Saint Leonard"s Church in Leiden (1925)
Vroom & Dreesmann in Leiden (1936)
the town planning scheme for the University of Nijmegen
the Radboud Hospital in Nijmegen
C&A Amsterdam
C&A Breda
C&A Dordrecht
C&A Gouda
C&A Haarlem
C&A Hoogeveen
C&A Oosterhout
C&A Roermond
C&A Rotterdam.
