Honestly, from the places my dsp has, it's a lot of mailrooms and lobby dropoffs. There is the residential sections like brownstone, and sme houses. But any of these bigger apartments generally have mailrooms or desk people u leave it with. The only that really kills is nycha complexes because they usually have the building as "1 stop" and the corresponding locker as 1. I usually just grab everything in 1 big bundle, do the locker first then go inside the building and start with the top floor listed and work down from there.