Ah, yeah my advice is definitely for sheet rock/dry wall based dwellings. I think you could manage to replace the coax run through brick with a single cat run though. I would buy and generously use wire pulling lubricant though.
The cables don't go through the brick; they're under plaster. No way are you removing that without destroying the plaster.
This has the nasty side effect of rendering WiFi pretty much unusable too.