The kitchen is where we cook, eat, laugh, play, and it is also the most expensive room in the house when it comes to renovations. How expensive? Well, according to HomeAdvisor, on average, it costs $20,556 to completely renovate a kitchen, with smaller kitchens ranging anywhere from $10,000 to $15,000. If you’re going to spend so much money on one room, be sure to do it right the first time by avoiding any unnecessary costs by planning and conducting plenty of research on wha