The most common and most likely answer to this crossword clue is the 7 letter word CARPORT
I've seen this crossword clue in The Daily Telegraph
C
A
R
P
O
R
T
Buddy explains!

The straight part
We know that "shelter by house" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case shelter by house = carport.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 CARPORT mean?
CARPORT noun- A roofed structure for automobile storage, usually attached to a house and not fully enclosed like a garage but with at least one side open to the outdoors.