10 Genius Bathroom Addition Ideas: Small space, big impact — creative bathroom addition inspiration from my real projectsEvelyn HartJan 20, 2026Table of Contents1. Floating Vanity with Hidden Storage2. Corner Shower Niche3. Skylight for Natural Light4. Pocket Door Upgrade5. Dual-function Mirror Cabinet6. Built-in Bench in Shower7. Heated Towel Rail8. Vertical Shelving Above Toilet9. Statement Tile Wall10. Underfloor HeatingFAQFree Room PlannerDesign your dream room online for free with the powerful room designer toolStart for FREEOnce, a client asked me to add a full bathtub, double vanity, and a washer-dryer into a bathroom the size of a walk-in closet. I thought it was impossible — until I sketched it out and realized small spaces can push us to be more inventive than ever. That project taught me that the right layout planning can turn even the tiniest bathroom into a spa-like retreat. Today, I’ll share 10 bathroom addition ideas I’ve used over the years, so you can dream big even in small spaces.1. Floating Vanity with Hidden StorageMounting the vanity on the wall creates an airy feel and leaves floor space visible, making the room seem bigger. I love adding hidden drawers beneath for extra towels. In fact, last time I was testing a room planner, I realized you can play with shadow lines to make the floating effect even more dramatic.save pin2. Corner Shower NicheInstead of bulky shelves, a recessed corner niche keeps toiletries neat without taking up extra space. It’s one of those simple tweaks that feels custom but is actually budget-friendly.save pin3. Skylight for Natural LightA skylight can dramatically change the mood of a bathroom. The challenge is ensuring privacy while maximizing daylight — frosted glazing works wonders.save pin4. Pocket Door UpgradeReplacing a swing door with a pocket door can free up valuable floor area. Perfect for narrow bathrooms where every inch counts.save pin5. Dual-function Mirror CabinetThese add storage without feeling clunky. I sometimes pair them with LED edge lighting — it looks sleek and is great for makeup. When testing layouts in a free floor plan creator, mirrors also help visualize depth in tiny spaces.save pin6. Built-in Bench in ShowerIt’s cozy, practical, and can double as storage for shower essentials. Waterproof it properly and it will last for years without maintenance headaches.save pin7. Heated Towel RailA small luxury that makes even weekday mornings feel indulgent. Just plan your electrical points early.save pin8. Vertical Shelving Above ToiletThat dead zone above the toilet is prime real estate for storage. Slim vertical cabinets keep things organized without clutter.save pin9. Statement Tile WallOne bold wall of patterned tile can distract from a bathroom’s small footprint and create a focal point. In my latest project using a bathroom design tool, this trick visually expanded the space.save pin10. Underfloor HeatingOnce you’ve experienced warm tiles on a cold morning, it’s hard to go back. It’s a bit of an upfront investment but pays off in comfort.save pinFAQQ: Do I need a professional for these ideas?A: Not always, but for plumbing and electrical work, I highly recommend a pro.Q: Can small bathrooms really fit these features?A: Absolutely — careful measurements and smart planning make all the difference.Start for FREEPlease check with customer service before testing new feature.Free Room PlannerDesign your dream room online for free with the powerful room designer toolStart for FREE