Comparative Shadow Study at Winter Solstice

Time Lapse:

Symbol/Notes: = 2/3 of of Southerly Stair Run Shaded at 12 PM during the Winter Solstice - Attributable to Horizontal Extension.

8 AM

10 AM

12 PM

2 PM

4 PM

2 PM

10 AM

12 PM

Comparative:

Bird’s Eye View

Looking Down at Stair of Northerly Neighbor

Case Study: Cow Hollow Horizontal Addition

Study of the Shadow Impacts of a Proposed Horizontal Addition on the

Stairs of a Northerly Neighbor in a Historic San Francisco Neighborhood.

As Project Currently Exists with Rear Sun Room.

Shown with the Proposed Horizontal Rear Addition.

Existing Project, shown with an Approximation of a Recently Removed Tree at Rear Yard.