Rooftop Screens for Mechanical Units: What You Can Build—and How Tall

By S. N. • Published 10/19/2025

Got condensers or an ERV you’d rather not show? In San Francisco, R-3 houses (single/two-family, including 3–4 stories, Type VB) can absolutely hide rooftop equipment—**but the screen has to meet both Planning and Building Code rules.