The pulsing red marker is only a guess from the access road. Turn it to the way your main door faces, then mark it measured.
Reading the site
Pulling roads, neighbouring massing, transit and institutions from OpenStreetMap.
The reading needs a web address. A browser will not let a page running off your disk call the Overpass servers, so the surroundings cannot be read here. Search still works, because it can go out through a script tag. Put this single file anywhere that serves it over http and every part of it works.
The pulsing red marker is only a guess from the access road. Turn it to the way your main door faces, then mark it measured.
Reading the site
Pulling roads, neighbouring massing, transit and institutions from OpenStreetMap.