There is no answer set in stone for this question, there are many possibilities, styles of doors, sizes, accessories and more, but a small sized kitchen can start at around £350. A typical, average sized kitchens can start at around £500 and you’re looking close into the thousands for large kitchens - pretty good for a brand-new looking kitchen if you ask me. Replacing your kitchen doors can increase the value of your home as well, so not only can you look at your brand-new kitchen for years to come, but you can look at it as an investment.