there is no way he would get 50% or anything at all if there was no financial contribution and you have been separated for that long.  the judges would not listen long if they hired an attorney.  I would do research on the following case:  In re Marriage of Hurd, 69 Wn. App. 38 (1993) which stands for the principle that a family home that is put in both parties names is presumed to be a gift to the community, even if it was purchased with one parties premarital separate assets/funds.  You should look at the precedent surrounding this case.  I won't give you a solid answer other than that because this type of situation is very fact specific.  Your property is not in both names but you are still technically married?

If you have been separated for 7 years i don't think you have to worry to much because they have known how to get ahold of you if there was cause for a financial remedy in the law.