*Step No.3* After the concrete structure of your house is ready, you can start installing the plumbing and electrical systems. Ensure your electrical boards and switches will be accessible to you after moving in. The sewage pipes should always be below the drinking pipe to avoid contamination. For concealed electrical work, PVC conduit with wires pipes is set up inside the walls before plaster. This is not only aesthetically appealing, but protects the wires from elements like humidity, temperature, and rodents. Once this is done, the walls are plastered.