Range from the cheapest installation of an outside power socket £60 (K & A Construction based in TW16) to the dearest installation of a garden power socket £130 (A&A Cooling Ltd based in KT8).
Comparing electricians estimates for installing an outside RCD socket gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to install an outside power socket in KT12 by posting a job with HaMuch and we will send it to electricians in KT12.

"Install an outside power socket from an outside terminal in our back garden. The house was built in 2020."
KT12