Not to sound harsh, but this question is like someone asking you "so I wanted to get an idea how much it would cost to get a car and also repair another car"? Are you buying a low-end Ford or a high-end Mercedes? It all depends on the size, elements you want to change or add, type of fixtures and finishes. You won't get anywhere with such a general question. I live in Los Angeles and would tell you I had pricing vary from $35K - $200K on my master bath re-do depending on what I wanted to change. I started with my dream bathroom and scaled back on the extravagant things, then sourced things on my own (light fixtures, faucets, etc.). Honestly, I'm just making a suggestion to be more specific about size, things you want to change, etc. Remember, simply adding lights requires more than just finding fixtures - you will need an electrician to run the wiring if you're not just replacing existing lights in the same location. That's just one example.

Depends on the size of your bathroom. Average bathroom remodel in Orange County for a master bathroom I quote with a tub and shower 18k-30k and for a regular bathroom 10k- 18k. All my prices include labor and material. Some clients save money by sour there materials. Hope this helps and wish you the best.