The most common and most likely answer to this crossword clue is the 10 letter word PEBBLEDASH
I've seen this crossword clue in The Guardian
P
E
B
B
L
E
D
A
S
H
Buddy explains!

The straight part
We know that "Housecoat a stone’s throw away" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case housecoat a stone’s throw away = pebbledash.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 PEBBLEDASH mean?
PEBBLEDASH noun- A coating of small pebbles sprayed onto soft plaster or cement, used as decoration on exterior walls.
- To apply pebble dash to a wall.