Yeah I have a 2' thick stone wall in the centre of my house (old exterior wall). I have an AP on either side of it as they penetrate the ceilings/floors above fine, but nothing is getting through that wall and maintaing good signal.
A 1920's stucco bungalow with chicken-wire in the walls pretty much acts like a faraday cage in every single room.
Or earthquake-proof reinforced concrete.
Just brick that's old enough will do it. Mine's something like 150 years old, and it's absolute murder to drill into, just incredibly hard, and it's either dense enough to act like stone, or it's absorbed enough moisture over the years to look like a faraday cage to wifi.