Yes, the K model CPUs are unlocked (meaning you can overclock them) and thus can only be overclocked on a Z77 / Z87 motherboard. The i7 4770k is a Haswell CPU so you would need to get a socket 1150 Z 87 motherboard. (Z77 is for Ivy Bridge / Sandy Bridge CPU's and wouldn't fit or work in an 82 / 87 Motherboard.
Edit: This is my first build that I have listed in my specs below. I had no clue about any of this and I just learned as I read the comments off newegg and also googling stuff like "what motherboard to go with an i5 2500 CPU" for example.