When and if I should get an EICR.

[Andy™]

The original yes. Still that's not an issue is it?

simply being old colours no, but some will say otherwise, i.e those incompetant or desperate for work...

 

[delano]

What electrical certificates do you have for the existing installation...
what do they suggest?

Electrical certificates have a box for the recommended next inspection date..

Typically 10years or change of occupancy.. (do you have the EICR from when you moved in?).
But can be less dependant upon the findings of the person doing the inspection and test..

Costs will realistically be proportional to how long it takes x hourly rate..
Which is also proportional to the size of the installation, number of circuits, accessibility to CU & accessories etc..

generally somewhere between half a day to a full day..

For domestic properties, it’s recommended every five years, change of tenancy/ ownership or purpose.

 

[Andy™]

For domestic properties, it’s recommended every five years, change of tenancy/ ownership or purpose.

not what GN3 says... imo it should be 5