The board shall adopt rules to govern its procedures provided, however, that such rules are not inconsistent with this ordinance or state law. Meetings of the board shall be held at the call of the chairman and at such other times as the board may determine. The chairman may administer oath[s] and compel the attendance of witnesses.

All meetings to [of] the board shall be open to the public. The board shall keep minutes of its proceedings, showing the vote of each member upon each question, and shall keep record of its examination[s] and other official actions all of which shall be immediately filled on [filed in] the office of the board and shall be a public record.

Appeals to the Board of Adjustment can be taken by any person aggrieved or by an officer, department, or board of municipality affected by any decision of the building inspector. Such appeal shall be taken within fifteen (15) days after the decision has been rendered by the administrative officer by filing with the officer from whom the appeal is taken and with the Board of Adjustment a notice of appeal specifying the grounds thereof. The officer from whom the appeal is taken shall forth will [forthwith] transmit to the board all the papers consisting the records upon which the action appealed from the [is] taken.

An appeal shall stay all proceedings in furtherance of the action appealed from unless the officer from whom the appeal is taken certifies to the Board of Adjustment after the notice of appeal shall have been filed with him that by reason of facts stated in the certificate a stay in his opinion [would] cause imminent peril to life or property. In such case, proceedings shall not stayed otherwise than by the Board of Adjustment or a court of record on application or [on] notice due to the officer from whom the appeal is taken and on due cause shown.

No appeal to the Board of Adjustment for the same or related variance on the same piece of property shall be allowed prior to the expiration of six (6) months from a previous ruling of the board on any appeal to such body unless other property in the immediate vicinity has, within the said six (6) months period been changed or acted on by the Board of Adjustment or City Council so as to alter the facts and conditions on which the previous board action was based. Such change of circumstances shall permit the rehearing of an appeal by the Board of Adjustment prior to the expiration if [of the] six (6) months period, but such conditions shall in no way have any force in law to compel the Board of Adjustment, after a hearing to grant a subsequent appeal. Such subsequent appeal shall be considered entirely in its merit and the peculiar and specific condition related to the property on which the appeal is brought.

At a public hearing relative to any appeal any interested party may appear in person or by agency or by attorney. The burden of proof shall be on the applicant to establish the necessary facts to warrant favorable action of the Board of Adjustment on any appeal. Any special exception or variance granted or authorized by the Board of Adjustment under the provisions of this Ordinance shall authorize the issuance of a building permit or a certificate of occupancy, as the case may be, for a period of ninety (90) days from the date of the favorable action of the board unless said board shall have in its action approved a longer period of time and has so shown such specific longer period in the minutes of its action. If the building permit and/or certificate of occupancy shall not have been applied for within said ninety (90) day period or such extended period as the board may have specifically granted, then the special exception or variance shall be deemed to have been waived and all rights thereunder terminated. Such termination waiver shall be without prejudice to a subsequent appeal and such subsequent appeal shall be subject to the same regulation and requirement for hearing as herein specified for the original appeal.

In exercising its powers, the board may, in conformity with the provisions of the Statutes of the State of Texas as existing or hereafter amended, reverse or affirm wholly or partly or may modify the order, requirement, decision or determination as ought to be made and shall have all the powers of the officer from whom the appeal is taken. The board shall have the power to impose reasonable conditions to be complied with by the applicant.

The concurring vote of four (4) members of the board shall be necessary to reverse any order, requirement, decision or determination of any such administrative official, or to decide in favor of the application on any matter upon which it is required to pass under this Ordinance or to affect [effect] any variance in said Ordinance.

Any person or persons jointly or severally aggrieved by any decision of the Board of Adjustment or any taxpayer or any officer, department, or board of the municipality may present to a court of record (District Court) a petition, duly verified, setting forth that such decision is illegal, in whole or in part, specifying the grounds of illegality. Such petition shall be presented to the court within ten (10) days after the filing of the decision in the office of the board and not thereafter.

Consider applications for conditional uses as set forth in Section 6;

To hear and decide appeals where it is alleged there is error on [in] any order, requirement, decision, or determination made by the building inspector in the enforcement of this Ordinance;

Interpret the intent of the zoning district map where uncertainty exists because the physical features on the ground vary from those on the zoning district map and none of the rules set forth in Section 5 apply;

Initiate on its motion or cause presented by interested property owners action to bring about the discontinuance of a nonconforming use;

Require the discontinuance of a nonconforming use under any plan whereby full value of the structure can be amortized within a definite period of time, taking into consideration the general character of the neighborhood and the necessity for all property to conform to the regulations of this Ordinance;

Permit the change of occupancy of a nonconforming use to another nonconforming use in accordance with the provisions of Section 16 [21];

Permit the enlargement of a nonconforming use in accordance with the provisions of Section 16 [21];

Permit the reconstruction of a nonconforming structure or building on the lot or tract occupied by such building, provided such reconstruction does not, in the judgment of the board, prevent the return of such property to a conforming use or increase the nonconformity of a nonconforming structure and provided that such actions conform to the provisions of Section 16 [21];

Require the vacation and demolition of a nonconforming structure which is deemed to be obsolete, dilapidated, or substandard;

Permit such variance of the front yard, side yard, rear yard, lot width, lot depth, coverage, minimum setback standards, off-street parking, off-street loading regulations, lot area, maximum height, building size or percent of masonry required, where the literal enforcement of the provisions of this Ordinance would result in a unnecessary hardship, or where such variance is necessary to permit a specific parcel of land which differs from other parcels of land in the same district by being of such area, shape or slope that it cannot be developed in a manner commensurate with the development permitted upon other parcels of land in the same district.