Transition regulations shall be required as height transitions or as buffer transitions when specifically required by a zone district.
Height transitions limit the height of buildings based on an angled plane drawn from a point above an adjacent property's property line.
Buffer transitions provide a setback from an adjacent lot line. Buffer transitions generally include screening requirements for the setback.
Transition regulations apply in addition to, and not instead of, side setbacks, rear yards, and front setbacks.
D.C. Mun. Regs. tit. 11, r. 11-B326