5th gen Honda Access suspension is not adjustable coilovers, is it? Just shorter springs etc. right?
(These pics robbed from nitin);

As you can see, springs should still be in contact when fully unloaded.
Thoughts are...
- Snapped springs
Cut springs (previous owner )
Or possibly the shock internal bump stops have perished/been damaged, so that the struts are over-travelling??? (unusual/unlikely failure I would suggest)