Building Restriction Lines

Lines beyond which exterior walls of buildings may not project, generally managed and recorded by the DC Department of Buildings (DOB) and the Office of the Surveyor. Land between a property line and a Building Restriction Line is considered private property set aside for public space, and its use is governed by police regulations and overseen by the DOB. Awnings, cornices, and roof overhangs—may be permitted, subject to regulations in the Public Realm Design Manual. Removal or adjustment of a building restriction line can be requested through the Surveyor's office.建筑外墙不得超出的建筑限制线（Building Restriction Line），通常由哥伦比亚特区建筑局（DC Department of Buildings, DOB）与测量员办公室（Office of the Surveyor）负责管理与备案。物业边界与建筑限制线之间的土地，被视为预留作公共空间的私有土地，其使用受警察法规约束，并由DOB负责监管。遮阳篷、檐口及屋顶挑檐等设施，若符合《公共领域设计手册》（Public Realm Design Manual）中的相关规定，可获准搭建。如需移除或调整建筑限制线，可向测量员办公室提出申请。