Typical opening: the estimate changes with the real span, edge shape, bay, lane, or fall zone being protected
Building mix: older homes, veranda fronts, parapet caps, window sills, and roof-side gaps
Outdoor conditions: In Bandla Metla, ongole heat, dust, road movement, monsoon bursts, and daily drying routines make access and finish matter, so material and access are reviewed together.
Common layout cue: older residential pocket setting with terrace edge, stair-head opening, tank access side, and roof-side gap