SHADOW IMPACT ASSESSMENT

MONSTER HOME BUILDING ADDITION

Objective:

To determine the amount of direct sunlight lost at an existing Bay Window due to a proposed addition to a house next door.

Background:

• FIG 1 shows existing conditions

• FIG 2 shows 2-storey addition proposed to west side of south house

• owner of north house objects to proposed addition

• grounds for objection: loss of sunlight on Bay Window
  
  (Proposed addition is shown in blue in FIG 2.)

Impact on Bay Window on March 21:

• existing house casts shadow on bay window until 12:24 pm (See yellow shading on FIG 1)

• proposed addition casts shadow on bay window until 2:36 pm (See magenta shading on FIG 2)

• the proposed addition results in the loss of 2 hours 12 minutes of direct sunlight on March 21st
  
  (Roof peak and eave line heights are shown in feet.)

FIG 1 - EXISTING

FIG 2 - PROPOSED

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© R. Bouwmeester & Associates, 2001