Lights do often come out brighter in the render, as SamTherapy said. go to freestuff and look for a utility called "light panel". It's a python script. Run that, select all your lights with it, and knock the intensity down by about 25%. Render with that, adjust some more, etc. Often lighting a scene can be a case of trial and error, I'm afraid :)

---

"you are terrifying
and strange and beautiful
something not everyone knows how to love." - Warsan Shire