What your bathroom costs depends above all on the pipes behind the wall, whether the layout changes, and which stone and fittings you choose. On the island two more things matter: hard, limescale-forming water and, depending on the location, salt in the air.
This guide explains how the cost comes together, when you need a permit, how to deal with hard water and which materials stay beautiful on the island. It is based on our work as a bathroom studio on Mallorca, based in Palma.
What a bathroom on Mallorca costs
Per square metre, a bathroom is one of the most expensive rooms in a house. Plumbing, electrics, waterproofing, ventilation, tiles or stone and bespoke joinery all meet in a small space. That is why our cost calculator uses its own rates for bathrooms: about €2,600 per square metre when quality and budget are in balance, about €3,500 when quality comes first, both within a full renovation and with a range up and down.
Four things move the figure most within that range:
- The pipes. Older houses and apartments often have pipes that should be replaced anyway once the wall is open. You only see this when the tiles are off, so it belongs in every serious estimate as its own item.
- The layout. If the toilet stays where it is and the shower sits over the old drain, the bathroom costs considerably less than when stacks and drains move.
- The walk-in shower. A built, level-access shower needs a fall in the screed and properly executed waterproofing. This is where you should not cut costs.
- Stone and fittings. A basin carved from a block of natural stone, hand-glazed tiles and brass fittings cost more than standard products. In return, they age well. More on this in our piece on materials that age beautifully.
Do you need a permit?
Whether a new bathroom needs a permit depends on what changes. In Palma, as of 2026: if the layout stays, nothing load-bearing is changed and no architect’s project is needed, a notification to the city, the comunicación previa, is enough. For simple works you may start the day after filing. Small interior works under €3,000 without a project need no procedure at all in urban areas, except on protected buildings.
If the work affects non-load-bearing walls or habitability, Palma requires a technician’s signature and a 15-day waiting period. If you touch load-bearing parts or reconfigure more than 60 percent of the floor area, you need a building licence. In an apartment the owners’ community comes in too: shared risers and drainage stacks belong to everyone, and changes to them have to be agreed with the community. Other municipalities have their own procedures, but the basic rule is the same everywhere. More in our guide to building permits on Mallorca.
Hard water: what it does to glass, fittings and joints
Tap water on Mallorca is hard. EMAYA, Palma’s water utility, describes the island’s groundwater as hard, scale-forming and highly mineralised. In the city network it is mixed, depending on the season, with water from reservoirs and desalination plants. In August 2026, readings in Palma ranged from 16 to 29 French degrees of hardness, roughly 160 to 290 milligrams of calcium carbonate per litre. For a bathroom this means limescale builds up on glass, fittings and joints, and water heaters scale up faster. A few planning decisions help:
- Plan a water softener. A softener at the mains, or at least before the hot water, protects pipes, boiler and fittings. Allow space for it in the drawings from the start.
- Few joints. Large formats or low-joint surfaces are easier to keep clean than small tiles with many joints where lime and soap build up.
- Glass you can dry. A fixed glass panel instead of a cubicle with many profiles, plus a squeegee on the wall. Less water stays on the glass, so less limescale builds up.
- Accessible fittings. Aerators and shower heads that can be removed and descaled are easy to clean regularly and stay in good condition for longer.
Humidity, ventilation and salty air
In the Mallorcan summer the air is warm and often humid, and houses with thick walls stay damp in winter. A bathroom therefore needs ventilation that reliably removes moisture, ideally a window plus quiet mechanical ventilation. Where moisture comes out of the wall, for example in old ground floors, the cause has to be fixed before tiling. Otherwise it moves behind the new surface.
In houses close to the sea, salty air attacks metal. High-quality, corrosion-resistant finishes are worth it there for fittings and hardware. Brass changes colour over time and develops a patina. If you like that look, it is a good choice.
Materials that hold up on Mallorca
Many of the island’s traditional materials work in a bathroom, as long as they are used in the right places.
- Marès stone. The island's warm, soft sandstone is porous. As an arch, a niche or a wall outside the splash zone it works very well; in direct contact with water it needs sealing and care.
- Hand-glazed tiles. Each tile varies slightly in colour and surface, so the wall looks less uniform. They are dense and work well in the splash zone.
- Natural stone and marble. Beautiful for basins and floors, but they react differently to acid and limescale. The choice should match the care you have in mind.
- Lime plaster and oiled wood. Outside the wet areas they bring warmth and are breathable, which helps the indoor climate.
In the Arabic Loft in Palma, the walk-in shower sits under a marès stone arch, with brass fittings and a built-in bench in warm sand tones. The materials suit the old building, and the shower and bench are planned for everyday use.
How a bathroom renovation works
- Concept, three to four weeks. Site visit, measured survey, a conversation about how you use the bathroom. First layouts and three material directions.
- Detailed planning, two to four weeks. Every wall elevation drawn, every fitting and tile specified, material samples to touch and a binding cost framework.
- Building work, six to twelve weeks. Strip-out, pipes, waterproofing, tiles and stone, installation, all coordinated by one team.
In total that is three to six months. If the planning is done early, stone and fittings can be ordered before demolition, so you are without a bathroom for less time. For owners who do not live on the island this also works from a distance, as described in our piece on renovating in Mallorca from abroad.
How we plan bathrooms at CARLO Design
We plan every bathroom around the way you use it and build it with tilers, stonemasons and metalworkers we have worked with on Mallorca for years. Plumbing, electrics, waterproofing and ventilation are coordinated by one team, so you have one contact. Whether it is one bathroom or several as part of a larger renovation, see Bathrooms on Mallorca. If the kitchen is next, our kitchen price guide for Mallorca helps.
FAQ
How much does a bathroom renovation on Mallorca cost?
Our cost calculator works with about €2,600 per square metre for a bathroom within a full renovation when quality and budget are in balance, and about €3,500 when quality comes first. These are reference values as of 2026. What a single bathroom costs depends mostly on the state of the pipes, layout changes, and the stone and fittings you choose.
Do I need a permit for a new bathroom?
In Palma, a bathroom without changes to the layout or structure usually only needs a notification to the city, the comunicación previa, and you may start the next day. If the work affects load-bearing parts or more than 60 percent of the apartment’s floor area is reconfigured, you need a building licence. In apartments, work on shared pipes has to be agreed with the owners’ community.
How long does a bathroom renovation take?
With us, a bathroom takes three to six months from the first meeting to completion: three to four weeks of concept, two to four weeks of detailed planning and six to twelve weeks on site. The building work itself is the shorter part. Good planning shortens it, because tiles, stone and fittings are ordered before demolition starts.
What helps against limescale in the bathroom?
A water softener at the mains or before the hot water, fittings with aerators that are easy to reach, few joints, and glass you can dry with a squeegee. Smooth, dense surfaces are easier to care for than open-pored stone that absorbs lime and soap.
Is marès stone suitable for a bathroom?
Marès is a soft, porous sandstone. As an arch, a wall outside the splash zone or a shelf it looks beautiful; in direct contact with water it needs careful sealing and care. For shower floors and walls in the splash zone we usually choose denser materials.
Your next step
Write us a few sentences about your bathroom: where on the island, its size, what should change and by when. We will come back with a date for the Project Check on site or by video.
You can work out what your bathroom costs as part of a larger project in two minutes. Open the cost and timeline calculator.