Does anyone have any links to some house retextures or any good ones? Also how to add them in because I have no clue but i'm pretty bored of the bland farmer house. :c
^ What Jinxie said. Also, the house retextures (as well as the greenhouse) are all in houses.xnb. So, when you find one you like, you'll take the new houses.xnb and place it in the "Buildings" folder. You will have overwrite the original houses.xnb, so you may want to back up the original file before overwriting (just in case anything goes wrong or you want access to the original down the road).
Additionally, most house retextures come as part of a set that'll include retextures of all the farm buildings, as well as miscellaneous items to accent them. I personally created two folders -- one to hold all my original backed up files, and another that holds copies of all the mods I'm using, so whenever Stardew updates and (potentially) overwrites any mods I have, I already have backups to drop and drag back into place.