The house in which my grandparents lived (and I was born), in Scorer St, Lincoln, sprang up in time for the 1901 census. Coincidental to the origin of this thread, it was occupied in 1901 by an immigrant engine driver.
It had an outside lav - I never heard the word "loo" until the late 1960s - which was still the case in 1961.
My dad (also born there, 1921) could remember when they got electricity - light sockets and one wall socket*. I remember there was a geyser above the kitchen sink but for bath nights it would be a matter of lighting a fire under the copper in the washhouse at the bottom of the back yard.
* I wonder what their first electrical appliance was? Perhaps a radio wireless, it would have meant they didn't have to take the accumulator to be recharged.