Active job

Run Ethernet Cable to other rooms (+ Potentially other electrical work)

I am looking to run an Ethernet cable from one end of the house to the other end of the house (1 or 2 rooms). There almost no roof space so that my not be an option. May have to be via outside of the house (maybe under the roof gutters). Looking to do this in the most cost effective way possible. Also have a few smaller bits of electrical work that I may/may not need to get done.