Have a garage sale. Unless you have enough excess for a whole other project, what you really have are scraps. The only people that would be interested are people who need to make a repair and have the same tile or Crafters who love extras. You do need to keep some for any future repairs.

What excess materials????

It is about 1300 sq feet of wood and enough tile for a powder room and stone for a small fireplacd

Facebook or craigslist, price it right and it will go.

Agree with KW and others. Keep a few pieces of everything (tiles may crack or a board may warp or scratch and also good for taking a sample somewhere later) and then give yourself a date (one month for example) to try and sell on facebook marketpace or craigslist. Then donate the rest to Habitat for Humanity Restore (though mine is very picky lately on what they accept but yours looks very trendy and modern so they should accept it).