The most common and most likely answer to this crossword clue is the 8 letter word HOARDING
I've seen this crossword clue in The Guardian
H
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A
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D
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G
More clues leading to the result HOARDING
- Stockpiling a large display board
- Billboard has John Wesley on record, describing love
- Saving a place to display notices
- Keeping a facility for large-scale ads
- US President nearly a century ago keeping old poster
- Saving a place to display notices
- Saving a place for notices
- Setting great store by a spot of publicity
- Billboard collection
- Difficult to pass order in midnight gathering
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HOARDING mean?
HOARDING noun- A temporary fence-like structure built around building work to add security and prevent accidents to the public.
- A roofed wooden shield placed over the battlements of a castle and projecting from them.
- A billboard.
- To amass, usually for one's own private collection.
- A behavior where people or animals accumulate food or other items
- An anxiety disorder, of people who experience feelings of anxiety or discomfort about discarding unneeded items