Tex. Civil Practice and Remedies Code § 130.002

(a) A covenant or promise in, in connection with, or collateral to a construction contract is void and unenforceable if the covenant or promise provides for a contractor who is to perform the work that is the subject of the construction contract to indemnify or hold harmless a registered architect, licensed engineer, or land surveyor, or an agent, servant, or employee of a registered architect, licensed engineer, or land surveyor from liability for damage that:

(1) is caused by or results from:

(A) defects in plans, designs, or specifications prepared, approved, or used by the architect, engineer, or land surveyor; or

(B) negligence of the architect, engineer, or land surveyor in the rendition or conduct of professional duties called for or arising out of the construction contract and the plans, designs, or specifications that are a part of the construction contract; and

(2) arises from:

(A) personal injury or death;

(B) property injury; or

(C) any other expense that arises from personal injury, death, or property injury.

(b) A covenant or promise in, in connection with, or collateral to a construction contract other than a contract for a single family or multifamily residence is void and unenforceable if the covenant or promise provides for a registered architect, licensed engineer, or land surveyor whose engineering, architectural, or land surveying design services are the subject of the construction contract to indemnify or hold harmless an owner or owner's agent or employee from liability for damage that is caused by or results from the negligence of an owner or an owner's agent or employee.

(c) Except as provided by Subsection (d), (e), or (f), a covenant or promise in, in connection with, or collateral to a construction contract for engineering, architectural, or land surveying services related to an improvement to real property is void and unenforceable to the extent the covenant or promise provides that a licensed engineer, registered architect, or land surveyor must defend a party, including a third party, against a claim based wholly or partly on the negligence of, fault of, or breach of contract by the owner, the owner's agent, the owner's employee, or another entity over which the owner exercises control. A covenant or promise in, in connection with, or collateral to a contract for engineering, architectural, or land surveying services related to an improvement to real property may provide for the reimbursement of an owner's reasonable attorney's fees in proportion to the engineer's, architect's, or land surveyor's liability.

(d) Notwithstanding Subsection (c), an owner that is a party to a contract for engineering, architectural, or land surveying services related to an improvement to real property may require in the contract that the engineer, architect, or land surveyor name the owner as an additional insured under any of the engineer's, architect's, or land surveyor's insurance coverage to the extent additional insureds are allowed under the policy and provide any defense to the owner provided by the policy to a named insured.

(e) Subsection (c) does not apply to a contract for services in which an owner contracts with an entity to provide both design and construction services.

(f) Subsection (c) does not apply to a covenant to defend a party, including a third party, for a claim of negligent hiring of the architect, engineer, or land surveyor.