This is a legacy version of the WELL Building Standard. Please check the latest version here.

Visual lighting design

Visual lighting design


To support visual acuity by setting a threshold for adequate light levels and requiring luminance to be balanced within and across indoor spaces.

Where Feature 53 specifies "the horizontal plane" as "0.76 m [30 inches] above finished floor" this also applies to the horizontal plane at standing desks, for instance 1.12 m [44 inches] as an estimate.

No. While the lights in the space must meet the lux levels referenced in this feature, dimming capability is not required.

Brightness management contrast is evaluated by the WELL Assessor by reviewing the professional narrative submitted as part of documentation. There are no specific parameters the project must meet, but the professional narrative must demonstrate that brightness contrast conditions are factored in. For general guidance on typical contrast ratios, projects may refer to ANSI/IES American National Standard Practice for Office Lighting (RP-1-12).

Light levels are evaluated through onsite spot measurements taken during the Performance Verification. Task light levels are not evaluated separately from general lighting. The light levels in general conditions including task lighting (if applicable) is measured.

No, this feature does not require lighting to be dimmable, but does allow the project to dim lights in the presence of daylight. In order to confirm compliance during Performance Verification, the interior lighting would need to meet the lux/foot-candle requirement without the help of daylighting.