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. This makes an excellent combination most of the time. It is said that fire must be fought with fire, and it seems to fit for the marriage of these two signs, with little exceptions. Both love change and excitement and have a great zest for life. Sagittairans with their independent nature would rebel, this could lead to a serious rift in the partnership.