Picture no.1 - earthing chamber - very very very important for any landed house ….
The earthing is a metal conductor that connects all the electrical appliances and that taps off leakage current to the earth .It an essential part of every installation, since this earthing or grounding prevents electrocutions from happening…
Picture no.2 - surface water drainage -  water would flood the area around your house. Drains  collect the surface water and this  flows into a public main drain system.

Picture no. 3 -  sewerage manhole …. Submanhole before going to main public sewerage drain…
Errrr you want to relocate ? And where do you want to relocate. Because looking at the picture you have about 3ft width space ….and shifting the manhole will cost a lot of $$$$$ because that is the last manhole discharge to your main public sewarage system …. The last manhole is the deepest … doing manhole requires at least ratio 1:60 gradient….

Hope this answer your question

Cheers mate,
Izwan
Www.archidstudio.com