The characterful flat that hides problems
Pre-1960 buildings in Valencia have something new builds do not: high ceilings, hydraulic mosaic floors, stone staircases, solid wood joinery. They have character.
They also have lead pipes, fibre-cement downpipes that may contain asbestos, timber floors beneath the bathroom screed and layouts designed for a different era. Anyone who renovates the bathroom in one of these flats without knowing what to expect gets unpleasant surprises. Anyone who goes in prepared — with the right budget and a plan — gets through it cleanly.
This guide is based on dozens of renovations we have carried out in El Carmen, Ruzafa, Benimaclet, l’Eixample and other historic areas of Valencia. It is not theory: it is what we actually find on site.
Physical characteristics of these buildings
Pre-1960 Valencian buildings (and a good part of those from the 1960s) share a set of structural features that directly affect how a bathroom renovation is done.
Solid brick walls: unlike the hollow-brick partition walls of modern construction, the walls in these buildings are solid brick or stone. They are harder to penetrate for pipe runs, heavier and more resistant. Drilling a 30 cm solid wall to pass a drain pipe takes more time and generates more dust than working with a modern partition.
High ceilings (2.80–3.20 m): an aesthetic advantage that does not affect the build process, but does affect tiling costs because there is more wall surface to cover.
Shared fibre-cement downpipes: in many buildings of this period, the vertical drainage stacks are made of fibre cement, a material that can contain asbestos. This is a critical issue covered in detail below.
Timber floors: in buildings from before the 1940s–50s, the floor structure between storeys may consist of timber joists with ceramic or plaster infill rather than the reinforced concrete slab that became standard from the 1960s onwards. If the bathroom sits on a timber floor, its condition must be assessed before adding more weight — new screed, built-in baths, large-format tiles.
Old electrical installation: common in flats of this era, the electrical wiring often lacks an earth connection, uses aluminium conductors or has undersized cable runs. In a bathroom, which requires a dedicated circuit with high-sensitivity residual current devices, this usually means updating part of the installation.
The 5 most common surprises and how to manage them
1. Asbestos in pipes or building materials
Asbestos was widely used in Spanish construction until the late 1980s. In bathrooms of pre-1960 buildings it can appear in:
- Fibre-cement downpipes (the most common location)
- Pipe insulation wrapping
- Some ceiling panels
- Adhesives used under old terrazzo or linoleum flooring
How to identify it: fibre cement has a grey, rough appearance different from PVC. If the downpipes are made of that material, assume they may contain asbestos and act accordingly.
What to do: Law 54/2003 and Royal Decree 396/2006 establish that removal of asbestos-containing materials must be carried out by an authorised company following a specific work plan. This is not a job for a conventional builder. A certified asbestos removal company charges between 800 and 2,500 euros for removing a downpipe, depending on length and accessibility.
What NOT to do: touch or work on asbestos-containing materials without an authorised company. Asbestos fibres are carcinogenic and the regulations are very strict on this point.
2. Lead pipes in the water supply
Until the second half of the twentieth century, cold water distribution pipes inside dwellings were made of lead. We now know that lead leached into water is toxic and its use for pipework is banned.
In a flat built before 1960, lead supply pipes inside the apartment are common. In a bathroom renovation that involves the water installation — replacing the water heater, moving the basin supply point, changing valves — the plumber will identify them and they will need replacing.
Replacement cost: replacing all internal distribution pipes in a flat (not just the bathroom) with copper or cross-linked polyethylene (PEX) costs 1,500–4,000 euros depending on the flat’s size and accessibility.
If only the bathroom is being worked on, it is possible to replace just that section of the installation, though it is advisable to use the opportunity to inspect the rest of the system.
3. Timber structure beneath the floor
If, when lifting the bathroom floor to install a new shower tray or change the drain, the workers find timber joists, their condition must be assessed before continuing.
Timber in wet areas like bathrooms can be:
- In good condition: if there have never been significant leaks
- Partially rotted: if there have been past water infiltrations
- Attacked by termites or woodworm: common in old Valencia buildings
A joist with rot or insect damage must be consolidated or replaced before any new floor finish is laid. If it is not, the floor can give way.
Cost: consolidation or replacement of joists in the bathroom area, between 400 and 1,500 euros depending on the number of joists affected.
4. Bathrooms of 2–3 m²
Bathrooms in pre-1960 Valencia flats are often tiny by current standards. 2.5 m² or 3 m² was typical in an era when the bathroom was strictly functional, not a space for comfort.
Renovating such a small bathroom brings its own challenges:
- Standard shower trays (70×80 or 80×80 cm) sometimes do not fit without repositioning the toilet or basin
- Access for workers during construction is awkward in such a tight space with all the materials
- Custom-sized glass enclosures are often necessary in irregular spaces
Our recommendation for very small bathrooms: prioritise function over aesthetics. A large mirror, light colours and no door — a shower curtain instead of an enclosure — can make a 2.5 m² bathroom much more comfortable to use.
5. No ventilation duct
Modern buildings have a ventilation shaft (shunt) to which individual flats connect to extract humid air from the bathroom. In pre-1960 buildings this duct does not exist: ventilation was provided exclusively through the window.
If the renovation includes installing a bathroom extractor fan, it needs a place to discharge:
- Through the existing window (if it faces the outside): the simple solution, with a wall or window-mounted extractor
- Through the ceiling via a new duct run to the roof: more complex and costly work (500–1,500 euros)
- Without an extractor: if natural ventilation through the window is adequate for the use pattern, this may be sufficient
Additional cost compared to a standard flat
At Reformarte, when we quote a bathroom renovation in a pre-1960 flat, we systematically apply a contingency uplift of 20–40% over the cost of an equivalent renovation in a standard modern flat.
That uplift covers:
- Additional demolition time through solid walls
- Probability of surprises in existing installations
- Special waste handling if asbestos is present
- Adaptations required by the state of the structure
A bathroom renovation that would cost 7,000 euros in a 1980s flat can cost between 8,500 and 9,800 euros in a 1950s flat, with all contingencies resolved.
How to budget correctly with contingencies included
The key is not to produce a tight base quote that will then blow out. There are two approaches:
Budget with a contingency line: the quote explicitly includes a line for “contingencies and unforeseen works” at 15–25% of the total. If there are no surprises, that portion is not invoiced. If there are, it is covered without drama.
Phased budget: the project is quoted and invoiced in phases, starting with demolition and the discovery phase. Once you know exactly what is beneath the floor and inside the walls, the price for the rest of the work is fixed. This approach is more transparent but requires trust between the client and the company.
Valencia neighbourhoods with the most buildings of this era
If you want to know where Valencia concentrates the highest number of pre-1960 buildings with these characteristics, these are the main areas:
- Ciutat Vella (El Carmen, La Xerea, El Pilar): the historic core, with buildings from the late 19th and early 20th century
- L’Eixample (especially the central section, between the Gran Vies): many buildings from the 1920s–40s, with bourgeois residential typology
- Historic Ruzafa (the older streets of the neighbourhood, north of Avenida Pérez Galdós): a mix of buildings from the first half of the 20th century
- Patraix (old part): residential area with 1940s–50s construction
- Benimaclet: part of the neighbourhood has 1950s–60s buildings with the characteristics described above
In these areas, the surprises described above are the rule rather than the exception. Someone who knows the neighbourhood knows what to expect before the wall comes down.
For questions about your specific case, our quote calculator lets you leave details about the flat and the renovation you have in mind. If the building is old and work involves the drainage stack or common elements, the article on how to renovate the bathroom in a residential building covers the permits that may be required. And to understand what a properly written renovation quote should include, the article on what a bathroom renovation budget includes gives you the full picture.
