Service · Understairs & Guest Toilets

Small space, big impression.

We turn awkward understairs corners into stylish, fully functioning guest cloakrooms — using wall-hung fixtures and bold tiling to make the smallest room in the house the most memorable.

Book a consultation ★★★★★ 5.0 on Google

20 yrsTrusted by Dublin homeowners

120+Small-space projects completed

Up to 5 yrsWet room warranty

3–5Working days, typical conversion

About this service

Don’t just squeeze a toilet in — create a cloakroom guests will remember. We specialise in the technical challenges of understairs conversions: sloping ceilings, tight angles and awkward drainage routes.

Using wall-hung sanitaryware to maximise floor space and precision tiling for impact, we turn unused cupboards and dead corners into valuable, stylish living space.

What’s included

The full small-space service.

Understairs toilet conversions

Navigating sloping ceilings and tight angles to fit a fully functioning WC.

Guest WC design & tiling

Turning a functional box into a striking “jewel box” your visitors notice.

Space-enhancing tiling techniques

Large-format tiles and diagonal layouts that make a small room feel wider.

Statement floors & feature walls

Geometric patterns and mosaics with the precision alignment tight spaces demand.

Boxing-in & sanitaryware integration

Tiled boxing to hide pipework and cisterns, keeping the floor clear and clean.

120+

★★★★★

Small-space and understairs projects completed across Dublin and surrounding counties.

Why choose Kae’s Tiling

What you actually get.

20+ years of experience

Over 120 successful small-space projects across Dublin and surrounding counties.

Custom layouts

Every design is tailored to complement your home’s architecture and your style.

Superior workmanship

Only the finest materials, with every tile handled for a flawless, enduring finish.

Full project management

From design idea to completed reality, big or small.

Questions

Understairs & guest toilets, answered.

Is my understairs space actually big enough for a toilet?

Often, yes — a functional guest toilet can fit into a space as small as 70cm wide by 130cm long. The key is headroom, not floor area: we typically position the toilet at the lowest part of the ceiling slope and the basin at the highest point.

Do I need planning permission to add a downstairs toilet?

In most cases, no. Converting an existing internal space is considered exempted development in Ireland, provided you’re not extending the footprint or altering a protected structure. The work still has to comply with Building Regulations for ventilation and drainage, which we manage for you.

My understairs cupboard has no window — how do you handle ventilation?

A window isn’t required, but ventilation is non-negotiable. For windowless rooms we install mechanical extraction fans linked to the light switch with a timer overrun, and we never install a toilet without a verified ventilation route.

How do you connect the waste pipe if the main drains are on the other side of the house?

Ideally we connect via gravity to your nearest soil stack. If the distance or gradient makes that impossible, we can install a macerator (saniflo) system behind the toilet, pumping waste through a small-bore pipe to your main drain.

Will adding a guest toilet actually add value to my home?

Yes — a downstairs toilet is consistently one of the most requested features for family buyers, typically offering a return on investment of around 5%.

How long does an understairs conversion typically take?

Most projects are completed within 3 to 5 working days, depending on the complexity of the plumbing. We sequence our plumbers, plasterers and tilers tightly to minimise disruption to your hallway.

Ready to start your understairs conversion?

Free survey, clear itemised quote, no obligation.

Southside Dublin Northside Dublin County Kildare County Wicklow County Meath

Book a consultation (087) 359 9092