Does a bathroom renovation need permission in a Tallinn flat?

The difference between the apartment association's say-so and the city's

The korteriühistu manages the building: shared pipework, the roof, the facade, and anything that affects other flats through the building's structure or systems. If your work touches a shared riser, the stack that other flats also drain into, or the building's waterproofing layer, the association has a legitimate interest and often a say in the timing or method, even if no formal permit is required.

The city, through the building register (ehitisregister), cares about a narrower and more specific set of changes: anything that alters the building as a structure, its layout on record, or its load-bearing elements. A retiled bathroom that keeps the same walls, the same drain positions, and the same floor plan is not something the building register normally needs to know about.

The two are not interchangeable. An apartment association can say yes to a plan and the city can still require separate notification if a wall comes down or a floor slab is cut into. When in doubt about which applies, it is worth asking both rather than assuming one covers the other.

What usually needs no permission at all

Replacing tiles, sanitaryware, a shower screen, or a bathroom door within the existing layout is routine work and does not usually need anyone's sign-off. The same goes for swapping an old toilet or basin for a new one on the same spot, refreshing the waterproofing under new tiles, or fitting a new extractor fan that uses the existing duct.

Cosmetic and like-for-like plumbing work sits in the same category: new taps, a new shower mixer, a new toilet cistern mechanism, repainting or resealing. None of this changes the building's structure or its shared systems, so there is nothing for the korteriühistu or the city to approve.

This is where a lot of straightforward bathroom work falls, and it is also where our tiling service, from 35 € per job, is most often used — retiling within the existing footprint, no permits, no waiting on anyone's answer.

When it is worth asking the apartment association first

Moving a floor drain, relocating a toilet or shower to a different part of the room, or connecting into the shared stack at a new point are the jobs where the association should know in advance, even if the building register is not involved. These changes affect pipework that runs through the flats below and above, and the association may want to inspect access to the riser or coordinate a shutoff.

The same applies to any change that affects the building's waterproofing between floors, or work that requires briefly turning off water or heating for the whole stack. In panel buildings from the Soviet era this is common, since risers often serve several flats vertically and a badly planned reconnection can cause a leak two floors down.

A short written notice to the board, or a message through the association's usual channel, is normally enough. It is not a permit application, but it avoids disputes later if something does go wrong with shared pipework.

• Moving a floor drain or a toilet's position
• Connecting into a shared stack at a new point
• Any work needing the water or heating shut off for other flats
• Cutting into a shared wall or floor slab
• Extending an extractor duct into a shared shaft

What to think about with waterproofing and floor height

Waterproofing under bathroom tiles is not optional and not just good practice: a failed membrane sends water into the flat below, and that is the kind of damage the korteriühistu and your downstairs neighbour will notice quickly. Any retiling job should renew the waterproofing under the new tiles rather than laying over the old membrane and hoping it still holds.

Changing floor height, for instance by adding underfloor heating or a thicker screed, can shift the finished floor level relative to the doorway threshold and the drain. In an apartment building this rarely needs a permit on its own, but it does need care: a floor built up without a corresponding drain adjustment can leave water pooling instead of draining away.

This is exactly the kind of coordination a full bathroom renovation, from 3 500 € per job, is built to handle — waterproofing, floor levels, and drain positions planned together rather than left to whoever tiles last.

Noisy work and telling the neighbours

Demolition, tile removal, drilling into walls or floors, and cutting pipework are noisy jobs, and most Tallinn apartment buildings have house rules setting quiet hours, typically avoiding evenings, early mornings, and Sundays. Check your building's rules or ask the board if you are not sure what applies.

Beyond the formal quiet hours, a short note on the stairwell noticeboard or a message in the building's group chat naming the dates and expected duration of noisy work goes a long way. It costs nothing and heads off complaints before they start, particularly in older wooden buildings in areas like Kalamaja where sound travels easily between flats.

If your renovation will take several days of drilling and demolition, spreading the noisiest stages earlier in the day and grouping them together, rather than dragging them out over weeks, tends to keep neighbours more patient.

How to be sure when a case does not fit neatly

Some jobs sit in a grey area: a bathroom being reshaped so the drain moves and a small section of screed is cut back, but no wall comes down. In these cases, do not guess. Ask the korteriühistu board first, since they will know if similar work has been done in the building before and what the usual expectation is.

For anything touching the building's structure, load-bearing walls, or the official floor plan on file, the building register or the city's building authority is the place to confirm whether notification or a permit is needed. A short email describing the planned work, ideally with a sketch, is usually enough to get a clear answer.

We do not touch load-bearing walls and do not do gas work, and any bathroom guide has to say so plainly: if your plan involves either, that conversation needs a structural engineer or the relevant specialist before anyone picks up a tile cutter.