How to design the perfect under stair bathroom

You know that awkward feeling of allowing guests to use your bathroom. And then your heart begins to race to wonder who used the bathroom after the last time you checked and what impending sight awaits your guest. Scary right?

This article offers the solution to all your questions when your guests ask the big question. “May I use the restroom?”

Design inspirations for your under stairs bathroom

Pretty sure the space underneath your staircase didn’t seem like a solution. That space can be even more functional than just a storage space. And can fit a stylish bathroom not just for your guests but also for your kids and elderly relatives.

Getting into a small space could ignite claustrophobia, and compact under stairs toilet designs can make this small space more comfortable.

Maximise space

With such a small space to work with, you want to ensure that you maximise your space. Free up the floor. With fewer features on the floor, the bathroom space appears less cluttered and provides an open floor space.

Fixing toilet features at the corners is an option you might want to consider.

The doors

Whatever door fits your preference. Be it traditional doors, sliding doors, or folding doors. They open outwards to create a more welcoming appearance. An even more cool effect is that the doors are custom built.

These doors are made to perfection so that they close perfectly under the stairs.

Storage space

The available space determines how much storage space you can use. Therefore, we recommend a minimum floor space layout of about 80cm x 140cm before considering a bathroom beneath your stairs as an option.

Even within this small space, you’ll need some space for all your toiletries. Installing a built-in mirror with storage is an appealing option. A cabinet attached to the sink is yet another option. Check out other ideas for under stairs that can bring out the creativity in you.

Colours

With colours, you can play tricks on your eyes and create an illusion of a spacious room in mind.
White is a perfect option for such a small bathroom and can make the room look bigger. Another trick is using large tiles, and the space appears visually spacious when you use the same tiles for the floor and walls.

Lighting

Lighting is an important feature, especially for smaller bathrooms. The darker it is, the smaller it feels.

When adding lighting to your under stairs bathroom, remember to add lights that illuminate but don’t overshadow the space. A great way to do this is by adding lighted mirrors.

Conclusion

Working in a small bathroom can be a challenge and requires careful planning. With this guide, you are definitely on the right track in designing your under stair bathroom. Here is more inspiration for using the space under your stairs.

FAQs

How do I prevent head bumps in such a small space?

To ensure enough headroom, the tallest part of the toilet has the sink and mirror where you stand, and the shortest area has the WC where you can sit.

How do I deal with ventilation?

Depending on the location of your stairs, you’re likely not going to have a window. However, you can fix in extractors to get out moist and provide ventilation.

How do I connect my under stairs bathroom to the sewer line of my home?

If a toilet is directly above or beneath the stairs, connecting the pipe to the sewage system becomes easy. However, where such a scenario does not exist, you may need to invite an expert to install a new sewer line.

EAN Breaking News

Breaking News from the team at Estate Agent Networking. Have a new story to share with us? Then please get in contact today! When and where we can we will refer to third party websites with a 'live link back' where news was released first.

You May Also Enjoy

Breaking News

London’s most prestigious postcodes revealed

The latest research from Enness Global has revealed London’s 11 most prestigious postcodes based on average sold price data, with the SW1A postcode covering Mayfair and St James’s topping the table, where the average home sold for £2.375m. Enness Global analysed sold price data from the Land Registry, examining transactions to have completed across London’s…
Read More
Software & Tech

Software GDTJ45 Builder Problems: Causes, Solutions, and Best Practices

If you’ve been using GDTJ45 Builder software, you might have noticed it’s not always as smooth and reliable as expected. From installation errors to unexpected crashes and slow performance, many users experience problems that can disrupt workflow, delay projects, and cause frustration. This article will walk you through the most common GDTJ45 Builder problems, explain…
Read More
Breaking News

Developers draw confidence from improving lending landscape

Jonathan Samuels, CEO of Octane Capital, believes that improving conditions across the lending landscape have helped to boost developer confidence heading into a new year, despite a number of challenges still remaining, with specialist finance remaining a key weapon in their arsenal. The latest survey of UK property developers, commissioned by specialist lender Octane Capital,…
Read More
Breaking News

Happy New Year! UK construction performance finishes 2025 on a high

GLENIGAN INDEX: UK construction starts 2026 on a stronger footing with 2025 concluded with a significant increase in project starts during the Index period The value of project starts increased by 7% during Q.4, but remained 7% below 2024 levels. Residential construction starts declined by 2% in the preceding three months and by 20% against…
Read More
Breaking News

Prime London homeowners unmoved by mansion tax

The latest look at prime London property supply from Jefferies London has shown that the volume of homes priced at £2m or more listed for sale across Prime Central London (PCL) fell by -9.3% during the fourth quarter of 2025, but £2m+ homes still account for 35% of PCL stock. Jefferies London analysed current for-sale…
Read More
Breaking News

2026 Predictions for the Auctions Sector

Daniel Gale, Head of Auctions, First for Auctions, part of LRG “As we enter 2026, market conditions are expected to mirror those seen last year. Buyer confidence remains cautious, borrowing costs are still high, and lenders continue to tighten criteria. This ongoing pressure on private treaty sales is driving more sellers towards auction as a…
Read More