Berlin operates under the Landesbauordnung (Berlin Building Code) and Eurocodes. The Senatsverwaltung für Stadtentwicklung (State Secretary for Urban Development) manages approvals with typical timelines of 4-10 weeks. Berlin has a population of approximately 3.6 million and covers 344 square miles. Berlin is in moderate seismic zone with standard wind load requirements. Notable requirements include energy efficiency per EnEV, accessibility standards, heritage conservation in historic neighborhoods, and green infrastructure. Approval fees typically range from 0.5-0.9% of construction value. Berlin offers expedited approval for sustainable projects and has established standards protecting the city's diverse architectural heritage.