True, and it's become more of a thing due to the buildout, people leaving the cities. The Victorians built affordable but modest housing to handle a population boom, but weren't nearly as careful. They tended to build within or on the margins of existing cities, luckily.
Here and there in the old Time Team episodes they'd find that buried services had cut right through some foundation or other buried remains, and the installers must have noticed the stones and whatnot, but, oh well. Much better job is getting done today.
I'm glad they do that, as the living gotta live, but I'm not an advocate of the old Greek anecdote, happy are they who have no history.
A prog rock band of the early 1970s, Public Foot the Roman, took its name from a worn sign near one of their residences, which had read, "Public Footpath to the Roman Fort". Wish we had a Roman fort around here, alas, nothin'. If we did, it would be hard to explain. :^)
Most US households before WWII didn't have autos, in the 1950s basically all did, and the Interstate Hwy Act supported and juiced growth in suburban living. In Britain the cummuter rail system was more wideranging because pop distribution was different than here, and there's an obvious difference in size.
We never had a car growing up, but as a kid in Rochester, New York in the 50's, I remember the City digging up a cemetery to put in a new expressway. We were visiting friends with our parents, and we were playing down the street from the house. Bulldozers were digging up the graves that were eventually moved to another site in the City. It really stuck in my mind, to the point that I said I didn't want to be buried, but cremated, and have my ashes scattered, because I didn't want them digging up my grave 100 years from now to put in a new highway. And then the movie "Poltergeist" came out, which featured the scene of the mother during a heavy rain storm, falling into the hole dug to put a pool in, and all these bodies came floating up to the surface from a cemetery that hadn't been properly cleared.