1. The board shall hear complaints and appeals, and adjust, correct, and equalize the valuations and assessments of any real or tangible personal property taxable by the city and assess and equalize the value of any real or tangible personal property taxable by the city omitted from the assessment plat books or records then under examination by them, and adjust and correct the assessment plat books or records accordingly. If the board proposes to increase any assessment or to assess any omitted property, it shall give notice of the fact to the person owning or controlling the property affected, his agent or representative, by personal notice, by mail, or if the address of the person, agent or representative is unknown, then by publication in one issue of at least two daily newspapers published within the city.

2. The notice as to omitted property shall state the kind and class of property and the value fixed thereon by the board and shall name the time and place, not less than five days thereafter, when and where the person may appear before the board and show cause, if any, why the assessment should not be made.

3. A like notice shall be given if the board proposes to increase any assessment, and in addition thereto shall state the amount of the increase.

4. For cause shown, if any, that the assessment was erroneously or improperly made, the board may change, alter or cancel the assessment.