Yes, quite a few residential at the head of the common stair have a loft access hatch which leads to either a void, or sometimes a void with a common header tank. Most of the time the hatch is small & there is never a ladder.
Some have a rudimentary padlock, others nothing, but height makes access difficult.
If I can safely get in I will, but it's rarely the case, but rather than ignore it it gets flagged up as an action for a competent person to access, examine & record, what, if any, compartmentation (vertical & horizontal) is present and what ignition risk are there.
Residential fire seems even more cost sensitive than commercial with many stakeholders assuming that "there's only a stair to look at" it's easy, quick & cheap.
As such we can sometimes only just complete a decent type 1 FRA on the cost structures and that doesn't include the provisions for working at height. Where necessary we will always require specialist inspections or a Type 2/3/4 FRA as appropriate. Until you visit a site it's difficult to guess in advance as there is little information available in advance.