Townsite lots were surveyed at this place by surveyor W.F. Rudall in 1909 after the Lands Department became aware that the site was planned as the terminus of the "Pinjarra-Marrinup Railway". Names suggested for the place by Rudall were "Dwellingerup" or "Marrinup", after nearby brooks, or "McLarty" after a local
MLA who had been very active concerning the railway (
John or
Edward McLarty). Surveyor General H.F. Johnston chose "Dwellingupp" after being misinformed regarding the spelling of Dwellingerup Brook. Ignoring a suggestion from the Under Secretary to amend the name to "Dwellingdown", the Minister for Lands approved the name as "Dwellingup" in December 1909. Eventually, the spelling "Dwellingupp" was chosen by order of the Under Secretary for Lands, and the townsite was gazetted as Dwellingupp in February 1910. The spelling was amended to Dwellingup in 1915. Dwellingup is an
Aboriginal name said to mean "place of nearby water" or "on and by the whole place there is fog, dew and mist". ==Bushfires==