Although you need to be careful not to look at history through rose-tinted glasses (i.e. there were horrible neglected places to live decades ago just as there are now) I think broadly, more people took greater care of their property and the surrounding area compared to present day. Some of this was due to the post war era (WWII) when areas were rebuilt/rejuvenated and when people moved into newly built council estates, often coming from dwellings that were no longer fit for purpose. So they tended to take greater pride.
As you've touched on, my mum will tell stories of how my gran kept her council house spotlessly clean, including the step at the front door and the path leading up to the door. She would also scrub the pavement area immediately outside her house, a few feet either side. Many of the residents did this, meaning most of the pavement was always clean.
I moved into an ex council house with mum ~30 years ago. Next door lived an elderly couple who had lived there for decades. They were in the old school mould referred to above. I couldn't believe it when we hadn't long moved in, I looked out the living room window one day and there was the old boy from next door sweeping up fallen autumn leaves from a grassed area outside our houses! Needless to say, a few years later when he was too infirm, no one else took that batten up!
Of course nowadays many people still keep their property in good order, however I suspect the number of people faithfully scrubbing their front step or tending the (public) area immediately outside their property has dropped significantly.
Oh I agree, my formal education is in history -- I'm very aware of considering context and not looking through a keyhole view.
Love the story about sweeping the leaves, I know exactly the character you mean!
My aforementioned Uncle was a veteran, and was very grateful and very lucky to have survived what he went through. After the war he and my Aunt ended up renting a single bedroom in a house and had to share a kitchen with the owner. In 1950, our local council built two new roads with council houses on and being able to rent a three bedroom semi with an indoor toilet and large garden was a small slice of heaven! The front has also had the garden ripped out, membrane laid down and stones poured on. It's functional, but does make me sad knowing how much pride had gone into it in the past.
People do still take pride though, as you say. After all, I'm far younger than those we're talking about but I always keep the front swept and pressure washed, put hanging baskets out along the front, sweep the gutter, etc. Definitely no 'donkey stoning' the front steps any more, though!