Construction workers access 3517 by parking on that paved segment of Anthony Pl S. (that connects to 27th Ave S,) then they walk 100-ft west to front door of 3517.

Anthony Pl S is a public ROW.. it connects to 27th Ave S, and happens to be platted on a diagonal relative to 27th Ave S, the alley, Cheasty Blvd. but it is a straight line, and terminates exactly where OSM shows it terminating. It provides access to 3515 and 3517 Anthony Pl. S..

3523 & 3529 Anthony Pl S. are accessed from the platted public alley (west of them), which connects to Cheasty Blvd.

These two access roads do not connect to each other as currently shown on OSM. King County IMAP is showing it correctly, so please refer to that resource. Thank you! I appreciate your help.
https://gismaps.kingcounty.gov/imap/

I have added four 'notes' to the OSM: two indicate where OSM is correct, and two indicate where OSM is incorrect. Are you able to read those notes?
Thanks for your help!

Is there a way to send you an image or pdf? I have marked up the screenshot but am unable to upload here.

The update on OSM is still not correct. The path shown running east/west is not a ROW (it is private easement, that is not open to the public) so is shown incorrectly. This version does not match the current version of King County IMap.

I emailed a mark up of this current OSM as a PDF, since I am not able to upload images or documents here.
Thanks for your help!

King County IMap has just been updated to reflect the correct extents of the Anthony Pl. S. right-of-way. Would you mind reviewing my original change request relative to the current KC GIS IMap to confirm? link same as above:
https://gismaps.kingcounty.gov/imap/

Thank you!!