Missing build

I am randomly missing the build I made. its just not there but I still have the map of it. Unfortunately the map doesn't give markers like the other map I have of the first home I built. Can you please help me. Attached is a copy of the made build on the map but looking forward from the map you can see it is not where i built it.  Also the map isn't giving me a marker for some reaso in order to figure it out. Can you help me!