(a) A person interested under a deed, will, written contract, or other writings constituting a contract or whose rights, status, or other legal relations are affected by a statute, municipal ordinance, contract, or franchise may have determined any question of construction or validity arising under the instrument, statute, ordinance, contract, or franchise and obtain a declaration of rights, status, or other legal relations thereunder.
(b) A contract may be construed either before or after there has been a breach.
(c) Notwithstanding Section 22.001, Property Code, a person described by Subsection (a) may obtain a determination under this chapter when the sole issue concerning title to real property is the determination of the proper boundary line between adjoining properties.