Building Envelope
Definition
The three-dimensional space within which a building must be contained, defined by setbacks, height limits, sky exposure planes, angular planes, and other planning controls. This volume represents the maximum theoretical space available for building development, though actual buildings often occupy less space due to design considerations and other constraints.
Purpose
Define the maximum permissible volume for building development on a site while protecting neighboring properties' access to sunlight, views, and privacy. Building envelopes help manage urban form and ensure compatible development within existing contexts.
Examples of Use
- Development feasibility assessment and capacity studies.
- Solar access analysis and shadow impact assessment.
- View corridor protection and visual impact studies.
- Urban design compliance verification.
- Building massing and architectural design development.
Related Terms
- Setback
- Height Limit
- Building Line
- Sky Exposure Plane
- Angular Plane
Notes
Building envelopes are crucial for protecting amenity, maintaining urban character, and ensuring predictable development outcomes. They often incorporate additional controls such as articulation requirements and street wall heights to achieve specific urban design objectives.
