What does the cryptic crossword clue "Olden (i.e. retro) housing owner? No (6)" mean?

The wordplay uses a hidden word. Hidden in (housed by) olDEN I E Retro – a DENIER is one who fails to own (admit) something The answer is DENIER.

Olden (i.e. retro) housing owner? No (6)

Guardian Cryptic #29646 | 1 Across | 2025-03-19 flower