That depends on the tile and flooring you choose and your level of expertise. Peel and stick tiles are designed for novices without experience. However, laying down other flooring options such as traditional tiles and hardwood flooring requires a little more skill. If you've tackled DIY projects before, you might feel more confident in your abilities. Watch some online videos demonstrating the process to decide whether you can handle it. If you're unsure whether you can install the flooring yourself, then you might feel better hiring a professional to do the job.