The subway is normally closed because it is currently on the Historic England Heritage at Risk register and is in need of a considerable amount of repair. The site has no electricity, no running water and is open to the elements at either end. It is very inhospitable on a wet, windy or wintery day.

The subway is kept locked to protect it from damage as it is a hidden, out of sight, structure.

Access to the space is managed by two councils, Bromley and Southwark.

Friends of Crystal Palace Subway have reinstated safe access to the subway via steps on Crystal Palace Parade on the Southwark side and this has enabled thousands of people to visit in recent years.

Recent repaving of the terrace on the Southwark side looks great and is worth a visit if you haven't seen it, this was done with the aim of reducing trip hazards.

In recent years the Friends of Crystal Palace Subway have provided scheduled public access at least 3 times per year. One day during Crystal Palace Festival, Heritage Open Day and Open House.