46 COMMISSION ON BUILDING DISTRICTS 



ing the trades and industries that shall be excluded or subjected to special 

 regulations and designating the uses for which buildings may not be erected 

 or altered. Such regulations shall be designed to promote the public health, 

 safety and general welfare. The board shall give reasonable consideration, 

 among other things to the character of the district, its peculiar suitability for 

 particular uses, the conservation of property values, and the direction of 

 building development in accord with a well-considered plan. The board 

 shall appoint a commission to recommend the boundaries of districts and 

 appropriate. regulations and restrictions to be imposed therein. Such com- 

 mission shall make a tentative report and hold public hearings thereon before 

 submitting its final report at such time as said board shall require. Said 

 board shall not determine the boundaries of any district nor impose any 

 regulations or restrictions until after the final report of a commission so 

 appointed. After such final report said board shall afford persons interested 

 an opportunity to be heard at a time and place to be specified in a notice of 

 hearing to be published for ten consecutive days in the City Record. The 

 boar.l may from time to time after public notice and hearing amend, supple- 

 ment cr change said regulations or districts, but in case a protest against a 

 proposed amendment, supplement or change be presented, duly signed and 

 acknowledged by the owners of twenty per centum or more of the frontage 

 proposed to be altered, or by the owners of twenty per centum of the front- 

 age immediately in the rear thereof, or by the owners of twenty per centum 

 of the frontage directly opposite the frontage proposed to be altered, such 

 amendment shall not be passed except by a unanimous vote of the board. 



