Cancer's home is his castle, but for the sagittarian home is just a place to hang his hat. Be careful with this combination. A water and fire combination. There is a vast difference in natures here and the likelyhood of being compatible is all but impossible, unless there are mitigating aspects in other areas of their charts. Sagittarius is outgoing and forthright which will make cancer uneasy.
Cancer is too needy for sagittarius.
On the good side, they are both generous people.