I found a book on Amazon, well 2 actually, one was how the teenage boys brain works, the other was about parenting teenagers. I think many of us are guilty with letting them off or thinking it'll just be easier if I do it.
I would say you want him to have good life skills, you also want him to respect any instructions you give. So I would say to him, Either tidy your room by the time I get home, or I'll take your electronics away for the weekend AND I will stand and watch you whilst you clean the room. I want it nice and tidy, not rammed into drawers/cupboards/under the bed. I will be doing an inspection. Either tell him or text him that.
Be firm, if you can't text him, or you think he'll ignore it, when you get home say I sent you a text did you get it? If he says yes, ask if he's done as asked. If he pleads that no such text ever existed, Tell him he has 90 minutes to tidy his room properly, clothes put away neat, floor spotless, nothing crammed into drawers, cupboards or under his bed, or you will take his iPad/phone/games console etc, till Monday!
Give him very real consequences that you act on, then he'll think twice about defying you. I would say definitely take his phone and whatever he plays on most.
This is what it's like in our house, do as your told, behave for others, in school, out of school, or there'll be consequences. It affects teenage DS more than DD. But they learn quick not to ignore you and have a laugh thinking you're not serious.
I would also say, next week whilst I'm at work, I'd like it if you would wash up and run the hoover around. Should be a 30 minute job at most, you only need the vacuuming say twice a week. Get him housetrained so if he goes to Uni or gets his own place, he knows that you keep the place tidy.