A homestead may be subjected to forced sale only for debts for (i) purchase money, (ii) taxes due on the homestead, (iii) work and material used in constructing improvements made thereon, (iv) an owelty of partition imposed against the entirety of the property by a court order or by a written agreement of the parties to the partition, including a debt of one spouse in favor of the other spouse resulting from a division or an award of a family homestead in a divorce proceeding, (v) the refinance of a lien against homestead, including a federal tax lien resulting from the tax debt of both spouses, if the homestead is a family homestead, or from the tax debt of the owner, and (vi) a home equity loan meeting the conditions of Section 50(a)(6). Tex. Const. art. XVI, ?§ 50 (Vernon Supp. 1999); Tex. Prop. Code Ann. ?§ 41.001(b). ( Vernon Supp. 1999).