The house needs to be renovated, and the property said that it needs renovation design drawings and water and electricity diagrams. How to draw this?

If the general property is really not allowed, you need drawings, that is, directly ask the plumber to draw a picture. Draw the house according to the outline of the house and then draw the lines of water pipes and wires. If ordinary hydropower workers really can't draw, you can ask your friends and relatives if they can draw CAD software drawings for interior design or fixture design, and ask them to help draw one.