Certainly no such requirement in my area.
However mortgage lenders sometimes require that a house be rewired before they will release all the loan.
In fact, I am starting a rewire on Monday for just such a reason, but this house does have some lead sheathed cables dating back to the 30's or 40's.
It is now a standard clause with mortgage surveyors in this area, that all homes over 20 - 30 years old have the wiring checked by a qualified electrician.
BTW our cables are copper with PVC insulation & sheath, similar to US 'ROMEX', pre 60's the insulation may be vulcanized rubber. Those cables would definately require rewiring now.
