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Converting a Small Closet into a Powder Room Bathroom

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Do you long for an extra bathroom in your home—especially near the bedrooms? In our northern Minnesota cabin we tackled that exact challenge by deciding to change a closet to a powder room. This clever transformation turned two unused small closet spaces into a functional and stylish half bath. The new bath serves the upper level (with 3 bedrooms!) beautifully. A smart solution for anyone working with a tight space, making a big impact on both daily convenience and the value of our home.

How to Change a Closet to a Powder Room: Our Cabin’s Clever Bathroom Transformation

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Before and after of converting a small closet into a powder room - a smart small bathroom remodel and how to change a closet to powder room.

When it comes to designing in real life, I’m all about making the most of every square foot. That’s especially true in our family cabin (a.k.a. Red Pine Hideaway), where functionality is key. In this post, I’m sharing all the details behind this cozy cabin bathroom remodeling project. From the layout changes to the design choices that made the most of every inch.

Let’s dive into the process of how we reimagined a tight footprint into a stylish and functional small bathroom. Full of charm, smart planning, and of course, thoughtful design.

Before, During, and After

I’ll be sharing a few (very unprofessional) before and after photos (and a few messy “during” shots) in the post. So, you can see exactly how we brought this home improvement project to life. Watching it evolve from dark closet space to a bright and welcoming new powder room is so satisfying. I hope it inspires you to rethink those underutilized spaces in your own home.

This smart update added serious value to our home. An additional half bath, even one tucked into a modest storage closet space, can make a big impact when it comes to resale and everyday convenience. Adding an extra toilet in a cabin with lots of guests is never a bad idea.

Upper Level Floor Plan – Before:

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The upper level is a great place to be. It has great views of the lake, and towering red pines all around – BUT, it desperately needed a bathroom.

The Problem: No Bathroom Near the Bedrooms

The upper level of our cabin has three bedrooms and zero bathrooms. Any middle-of-the-night bathroom trips required a walk downstairs to the only bathroom in the home, a full bathroom on the lower level. For guests and family alike, it just wasn’t ideal.

Finding the Perfect Spot

Where could we possibly find enough room to add a second bathroom upstairs without major demo? We considered (for a split second) using the sitting nook space in bedroom 3 but quickly came to our senses! The answer was hiding in plain sight: a shelving nook in Bedroom 1 and a small closet area in Bedroom 3. This allowed for the sitting nook with views to the lake to be untouched. A prime spot for reading and quiet that we didn’t want to lose.

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Closet Space in Bedroom 3
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Shelving Nook in Bedroom 1 on the opposite side.

This wasn’t a large-scale bathroom remodeling project. We were working with limited square feet of floor space and needed to be clever. By slightly shrinking one of the bedrooms and rerouting the floor plan to create a hallway, we found the perfect spot for a new bathroom. The new hallway also provided the perfect spot for a hall closet. It provided a great opportunity for storing towels and back-up supplies.

New Upper Level Floor Plan

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Since this isn’t our primary residence, the excess closet space just wasn’t needed or being used. Adding wall hooks to each room and a closet space in the new hall was just perfect for our use.

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Day 1 – Demo

Keeping the Budget in Check

Because this was part of a larger cabin update, we were mindful of keeping the bathroom project within budget. By working within the existing closet space we were able to keep costs down without sacrificing function or style. Choosing off-the-shelf fixtures and finishes like a prefinished freestanding vanity, and laminate flooring kept us in-check with our home improvement project spending.

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Framing in place for the new pocket door, and routing the plumbing through the floor to tie into the septic system.

Planning the Change from a Closet to a Powder Room in a Small Space

Anytime you change a closet to a powder room, there are a few things to keep in mind. First, we had to consider plumbing lines and water lines. We had to make sure we could connect to the existing system without a complete overhaul. We worked closely with our general contractor to plan for a compact sink, toilet, and all the behind-the-scenes magic like new pipe runs and electrical work. Adding insulation to all the walls and the new plumbing in the flooring for sound dampening was also part of the plan.

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Newly framed hallway with the closet straight ahead and pocket door to the powder room on the right!

A pocket door was a no-brainer in this small powder room. It saved valuable floor space while maintaining easy access from the new hallway.

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New wall and door framing for the “bunk room” in progress.

Design Concepts: A Small Powder Room with Big Cabin Style

One of my favorite parts of any bathroom project is choosing the finishes. In this case, blending functionality with the rustic charm of our northern Minnesota cabin. This new powder room may be small, but it brings so much personality and thoughtful design to our upstairs level.

RELATED: 90s Bathroom Remodel (Before and After Makeovers)

Change a Closet to Powder Room – After

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We took a small closet in each of two adjacent bedrooms and transformed them into a light-filled, compact half bath on the second floor. A game-changer for this level of the cabin that originally had no bathroom nearby.

RELATED: Benjamin Moore Hale Navy, HC-154: Paint Color Review

Because the cabin features knotty pine tongue and groove throughout, we knew we wanted to carry that into the small bathroom to create a cohesive look. It adds warmth, texture, and that unmistakable “up north” feeling that makes this space feel like it’s always been here.

RELATED: Best Design Ideas for Shiplap (How Much is too Much?)

To balance out the natural wood, I kept it pretty simple. Choosing clean, and modern but cabin-friendly finishes make the space feel both fresh and timeless. I sourced a budget-friendly, yet well-made navy blue vanity with a white quartz top and backsplash from Home Depot. It fit the space perfectly, and provided a bold contrast against the knotty pine walls.

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  • navy blue free-standing vanity with a white solid surface quartz top offers a crisp contrast against the wood walls while also providing ample storage in a compact footprint. It was the perfect choice to keep things practical in this tight space.
  • We added a brushed nickel vintage-inspired vanity light, which brings a touch of old-school charm with updated function.
  • Matching brushed nickel bath accessories including a towel ring, robe hook, and toilet paper holder.
  • And for the finishing touch, I added just a single art print from an Etsy creator—an artsy depiction of loons. It perfectly complements the cabin’s colors and setting.
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Without decorative clutter, this space feels intentional and inviting. That’s the power of combining smart planning. Beautiful finishes, and a nod to your personal style, even in the smallest of rooms.

RELATED: 15 Rookie Home Decorating Mistakes and How to Avoid Them

bunk-room-after-change-closet-to-powder-room

Here’s a fun twist: the bedroom that we reduced in size? We transformed it into a bunk room that turned out beyond adorable. It’s the coziest little nook for grandkids or guests. It makes the most of its tight space and can also accommodate one more person with a full-sized bed on the bottom bunk.

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The Bedroom 3 sitting nook with views to the lake remains!

RELATED: Lakefront Luxury Remodel + Addition

A Few Tips If You’re Considering the Change of Closet to Powder Room

If you’re thinking about your own closet-to-bathroom conversion, here are a few key takeaways from our experience:

  1. Work with the right pros. A designer and general contractor – bringing in experts for the plumbing lines, electrical work, and layout planning is essential.
  2. Measure every inch. This is a small space project. You’ll want to ensure there’s enough space for comfort and code compliance. Don’t forget to factor in things like door swing (or use a pocket door instead of a traditional door). I personally am not a fan of barn doors, especially for a bathroom. They lack privacy, and frankly, are overdone.
  3. Choose fixtures wisely. A space-saving toilet (standard round bowl vs. elongated bowl), and slim vanity with a single compact sink help maximize every inch. Consider floating shelves, or a medicine cabinets mirror combo for extra storage space without crowding the room. Always use your vertical space!
  4. Light it well. Natural light is a bonus, but if you don’t have that option (we didn’t) – bathroom vanity mirrors and lighting make all the difference in a small bathroom.
  5. Bring in personality. Less is more, especially in a tight space. Be choosy about home decor, artwork, or window treatments. These touches soften the space, give it personality, and make it feel finished.
  6. Ventilation is non-negotiable. Don’t forget to plan for an exhaust fan!

Small Powder Room, Big Impact

This little guest bathroom has made a huge difference in how we use and enjoy the cabin. It’s amazing how much of a transformation can come from just a few square feet of floor space when every design decision is made with intention.

Even a storage closet or walk-in closet can become the perfect place for a smart, beautiful half bath. Sometimes the best transformations start with just a little bit of vision—and a willingness to see the potential in every corner.

We welcome guests at Red Pine Hideaway as well as our Cape Coral home (a.k.a. La Vida Bella). Check it out the details HERE!

Cheers

Hi, I’m Carla

carla-bast-interior-designer-and-blogger

I’m glad you’re here! You are in the right place if you are feeling overwhelmed at the thought of embarking on a remodeling or interior design project. Living with an outdated home and don’t know where to start? I’ve helped families like yours update their home and create spaces that reflect what’s important to them for over 25 years.

I’ve been honored to be featured in:

Real Homes

The Spruce

Apartment Therapy / Cubby

Twin Cities Luxury + Fashion

MSP Magazine

Minneapolis Star Tribune

Hunker

Home Crux

 

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