(a) Except as provided by Section 130.002(b) or (c) or Section 130.0021, this chapter does not apply to an owner of an interest in real property or persons employed solely by that owner.
(b) Except as provided by Section 130.002(b) or (c) or Section 130.0021, this chapter does not prohibit or make void or unenforceable a covenant or promise to:
(1) indemnify or hold harmless an owner of an interest in real property and persons employed solely by that owner; or
(2) allocate, release, liquidate, limit, or exclude liability in connection with a construction contract between an owner or other person for whom a construction contract is being performed and a registered architect, licensed engineer, or land surveyor.