Hi How To find a manhole in front of the house,I already dug up to 250mm

Ask water board sometimes there is no manhole in one garden or if they have garage may be inside check next door garden

Hi 👋 mate contact your drainage company or your water supply they will help you .it depends on the area you live in .hope that helps .John

Take a look at house deeds for services maps or walk the length of the street to identify both rain and foul water services, then depending on where land drains / manholes are situated in each residential garden, take a measurement of existing manholes by stepping out in meters, most of the time drainage runs are uniform with a given measurement, if there is not a manhole in the garden at least you can determine where the pipe is to create at manhole ensuring that foul does not run into rain.

IF YOU HAVE ANY INSPECTION CHAMBERS IN YOUR REAR GARDEN LIFT THE LID AND SEE IF YOUR FOUL DRAIN TO YOUR PROPERTY RUNS ALONG THE REAR GARDENS, NOT ALL FOUL RUNS RUN DIRECT TO THE FRONT OF PROPERTIES.