I grew up in the US, lived in Spain for several years and now regularly visit my in-laws.
I'm currently staying in what I would call an average apartment block with ~40 units built in the late 70s or early 80s.
As far as I can tell there are no smoke detectors or sprinklers and there is definitely no alternative egress like a fire escape. And I don't think I've been to any residence in Spain that has either (but I'm not always checking).
Fire deaths per capita are considerably lower in Spain than in the US[0] where my impression is there is a huge emphasis on fire safety equipment like smoke detectors and sprinklers.
I expect that smoke detectors and sprinklers save lives - or certainly hard to argue that they don't at the margin regardless of the type of building they are installed in.
What's going on? Why doesn't my in-law's apartment have smoke detectors and sprinklers? Is my family actually sleeping in a death trap?
Some possible explanations I can think of:
* Different building materials and building codes - On average Spanish residences more fire resistant because of their construction
* Cost - smoke detectors and sprinklers drive up costs and getting adoption might be hard if they only save a small number of marginal lives. Even if I would argue that makes them worth it everywhere
* Business/Politics - Fire safety manufacturers have had more success in the US getting their devices into building codes and legislation
* Rescue/Fire Suppression - this seems very unlikely (figure firefighting and evacuation techniques are pretty universal in the developed world) but I guess Spanish firefighters could be better at getting fires out and people evacuated
I have been wondering about this for more than a decade and this seems like a good international community to find someone who might know or people interested in the topic. I'd love people's thoughts.
[0] - https://www.worldlifeexpectancy.com/cause-of-death/fires/by-country/
Beyond that though there seem to have been a lot of deaths in the US in tenement like buildings in cities which usually have brick facades, though I'm not sure what materials were/are used internally. In the US these types of buildings usually had/have external fire escapes, another feature I never saw in France.
I think European apartment buildings have traditionally had fire-safe structurally isolated apartments. This was probably not the case in pre-war US buildings. Modern US apartment buildings often do have that feature. The building I am currently living in was built in the 70's and is reinforced concrete. Apartments have smoke detectors but they only sound inside the apartment. The building also doesn't have external fire escapes and the recommendation is to stay in your apartment if the building fire alarm goes off unless instructed to evacuate by firefighters.
On the other hand Europe has in the more distant past had major issues with fire safety. Much of London burned down in 1666 and ancient Rome is also known to have had some major fires. It seems like Europe had learned some lessons about fire safety by the time the majority of its current buildings were constructed that the US either forgot or chose to ignore.