Key functional and operational parameters such as occupied hours of a building, use by space type, required temperature settings, and lighting…

The Owner Project Requirements (OPR) is a document that details the ideas, concepts, and criteria

determined by the owner to be important to the success of the project. It typically includes key

functional and operational parameters such as occupied hours of a building, use by space type,

required temperature settings, and lighting levels. The OPR is used as a guiding document

throughout the design and construction process to ensure that the team is aligned with the owner’s

vision and goals.

Reference: LEED v4: Building Operations + Maintenance Guide, Functional / Operational | WBDG -

Whole Building Design Guide, Facilities Operations & Maintenance - An Overview - WBDG

The Owner Project Requirements (OPR) is a critical document that outlines the functional and

operational objectives of a project, reflecting the owner's needs and expectations. This document

serves as a foundation for the design team to develop the Basis of Design (BOD) and guides the

project through its lifecycle, ensuring that the owner's operational needs, such as occupied hours,

use by space type, required temperature settings, and lighting levels, are met. The OPR typically

includes information on building occupancy schedules, space usage types, environmental conditions

like temperature and lighting requirements, and other owner-driven criteria essential for the

building's design and operation. By clearly defining these parameters upfront, the OPR ensures that

the project team has a clear understanding of what is expected from the building's performance,

facilitating a design that aligns with the owner's vision and operational needs.

Reference: Based on the LEED AP documents and resources, such as the ASHRAE 90.1-2013 User

Manual, which provides guidelines for determining design and operational parameters like lighting

wattage for various space types (ASHRAE 90.1-2013, Section 9.1.4) .