Murdoch was a Mariner in 1915 and was living at 4521 James Street....seems today James street only has a few numbers in the 4000s and none in the 2000s ( Near Queen Eliz. Parl) ...and if you go through the directory pages to which I gave a url, it was the same back then....so Roderick may just have made up a number on James street. There is no 2530.
At least that's how I saw it...Go ahead and look for more "J" street listings, I could be wrong. There is a street as well as a surname index. He is listed in both in the greater Vancouver alphabetical index
1238 E Pender Street is just a few blocks up main street and over a few... nearer the harbour
In 1919 I assumed he was the mate listed as he worked on a Steamship....Coast S.S. Co. is likely a shortening for the "Grand Trunk Pacific Coast Steamship Company". There are other Murdochs and Rodericks and Georges in those listings, so you may want to look at them to see if anything clicks.
Oh, I didn't see that there are 2 Murdoch Mcleod occupation seaman in 1922...not that it matters much as all are close to the harbour...
47 21 Ave W is nearer the Queen Eliz Park address...1149 Keefer St is nearer the Pender address