Unless it is certain than an electrical rewire is necessary, it would be wise to have an electrical installation condition report completed on your home to establish the condition of the electrical installation.
If a property has wiring that is over 25 years old, the chances are that it will probably need it’s electrical wiring upgrading, at least partially, in order to bring the property in line with the current official safety standards.
A partial rewire is where a section or circuit of your electrical installation is replaced or upgraded – sometimes it is only necessary to renew a certain circuit or even just a part of that circuit.