Kammala wannan jumlar: A shekara ta 1463 ya zama Admiral na Flanders. A cikin 1476 ya kasance memba na Majalisar Duchal na Charles the Bold. Daga 1477 zuwa gaba ya kasance chamberlain a kotun 'yar Charles, Maryamu ta Burgundy. A cikin 1478 an sanya shi Knight na Order na Golden Fleece. Lokacin da Wolfert VI na Borselen ba zai iya sarrafa halin da ake ciki a Holland da Zeeland ba, an nada Joost a matsayin mai kula da waɗannan yankuna. Ya kasance mai kula da jihar har zuwa mutuwarsa a 1483. Joost de Lalaing ya mutu a lokacin kewaye da Utrecht, a lokacin
Yaƙe-yaƙe na Hook da Cod.