You will need the electrician to install you whole house surge protection.
Depending on the local rules and regulations, if he is qualified to do the work, he may be able to do it in his own house, legally. FYI, in Canada, and our electrical code follow NFPA and NEC's closely, one used to be allowed to do such work as long as it is for one's own residential home, but that was years ago and one still has to take out a permit and have the finished job inspected by the ESA (or Hydro).
In recent years, things got tightened up since around 2006 iirc, and I am not up to date on the latest. Not sure about what the rules are in the USA, I would assume it may be similar.
I only mention this because for most modern homes, install a whole house surge protection unit is an easy job and it very safe if one follows instruction and make sure the incoming switch is turn off. Many will be tempted to do it live for sure, to avoid shutting off everything in the house and have to use flash lights, but it is not
for us to suggest "live work" on forums.