ATFEA . . . . . . . . . .
. . . Ask The Friendly Estate Agent . . . . . All sorts of issues, such as: does this leave adequate parking does this make the house too large for the neighbourhood does this make the house unbalanced e.g. 2 bedroom house with 5 reception rooms etc. how large is the garage does the accomodation 'flow' i.e. is the room easily useable/accessible
Depends on the location, type of house, types of surrounding houses, top price for location, .....
So ask the estate agent what the valuse would be with an extra room and no garage. Valuations are usually free (esecially if you are considering puting the house on the market) :-)
HTH Dave R