> Those details matter, yes, but they’re the type of detail that I can delegate now
No...
If you're building a skyscraper, there's no world where you can delegate where the steel or bolts come from. Or you'll at least need to care about what properties that exact steel has and guarantee every bit used on your project matches these constraints.
If you don't want to care about those, build residential houses with 1000x less constraints and can be rebuilt on a dime comparatively.
You might be thinking about interior decoration or floor arrangement ? Those were always a different matter left to the building owner to deal with.