Texas Local Government Code - LOC GOV'T § 171.004. Affidavit and Abstention from Voting Required

(a) If a local public official has a substantial interest in a business entity or in real property, the official shall file, before a vote or decision on any matter involving the business entity or the real property, an affidavit stating the nature and extent of the interest and shall abstain from further participation in the matter if:

(b) The affidavit must be filed with the official record keeper of the governmental entity.

(c) If a local public official is required to file and does file an affidavit under Subsection (a), the official is not required to abstain from further participation in the matter requiring the affidavit if a majority of the members of the governmental entity of which the official is a member is composed of persons who are likewise required to file and who do file affidavits of similar interests on the same official action.