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About the Sustainable Post-Occupancy Evaluation Survey (SPOES)

The SPOES is an online survey that asks occupants about their satisfaction with the indoor environmental quality (IEQ) of their physical environment. Questions follow the B3 IEQ Guidelines and include the categories listed below.

  1. Acoustic Quality
  2. Appearance
  3. Cleaning and Maintenance
  4. Daylighting Conditions
  5. Electric Lighting Conditions
  6. Furnishings
  7. Indoor Air Quality
  8. Privacy
  9. Technology
  10. Thermal Conditions
  11. Vibration and Movement
  12. View Conditions

Supported Building Types for B3 projects

  • The following building types are required to complete the SPOES:
    • Offices / Laboratories
    • Classrooms / Training Centers
    • Residence Halls

Exempt B3 Buildings

  • A B3 building is exempt if there are not at least 25 occupants, e.g., employees, students.
  • An email address must be available for each occupant so the questionnaire can be sent to him/her.
  • POEs have not been developed for all building types. Therefore, the building is exempt if its building type is NOT listed in the “Supported Building Types” above.

Development of the SPOES Questionnaire

Goals of SPOES questionnaire development were to:

  • reflect recognized IEQ components used in sustainable guidelines, in this case, the B3 Guidelines;
  • meet research standards for validity and reliability;
  • clearly communicate results through an IEQ Scorecard;
  • use metrics that can be compared to benchmarks and other buildings; and
  • provide useful data for program evaluation and feedback.

An interdisciplinary team was formed at the University of Minnesota to develop the questionnaire, data collection method, and analysis strategy. The questionnaire went through piloting, pre-testing, revisions, and analysis for reliability and validity. The questionnaire addresses a range of environmental scales, from an individual workstation to an entire facility, and it reflects industry standard IEQ categories and attributes (which are the measurable independent variables within each category). The dependent variable is occupant satisfaction. The purpose of conducting the POE is to determine which of the categories (thermal, lighting, acoustics, furnishings, etc.) influence occupants’ satisfaction with their interior environment. SPOES provides a quantitative analysis of occupants’ satisfaction and helps direct attention to both successful areas as well as areas that need improvement. Reports on the development, testing, and subsequent case study findings can be found in the Journal of Green Buildings, International Journal of Sustainable Design, Journal of Learning Spaces, and Design at the Edge.

The SPOES questionnaire can be used by architects, interior designers, facility managers, and business/building owners to identify a building’s IEQ Score. The IEQ Scorecard can range from 1 (very dissatisfied) to 7 (very satisfied). It uses the mean score of all variables to illustrate how well the overall IEQ performs in terms of satisfying building occupants. By prioritizing the problem areas identified by SPOES, business owners and facility managers are empowered to make changes that enhance satisfaction and reduce recruiting and training expenses.

Below is an example of a building’s IEQ Score…you’ll receive this score and analysis of all findings in a reader-friendly report.

Pre-Occupancy Evaluation (PreOE)

Although pre-occupancy evaluations are not required for B3 buildings, they provide excellent programming and benchmark data. For projects that involve renovating an existing space or designing a new space for a specific group of users, pre-occupancy evaluations are a valuable design tool. PreOEs performed during the pre-design phase can identify IEQ issues that will assist designers with design and programming. Additionally, the results can be compared to the post-occupancy evaluation to track the effectiveness of the design. PreOEs are available for the same building types as the POE (see Supported Building Types). Fees do apply whether your building is a B3 building or not as PreOEs are not required.

Fee Schedule

The POE is FREE for B3 buildings; contact us, and we’ll get started!

If you are working with a building that is not a B3 building, we can do a PreOE and/or a POE for you. There is a fee that includes administration of the survey, analysis of the data, and development of a final report. POEs should be done at 12-months post-occupancy (or later) and. PreOE and POE fees are provided in the table below.

Service Pre-Occupancy
B3 Non-B3 B3 Non-B3
SPOES $4000 $5000 Free $4000
Modules for Specific IEQ Categories (see Modules in sidebar) $2000 (each) $2500 (each) $2000 (each) $2500 (each)

Need more information?

Contact poe@b3mn.org

B3 Buildings use the SPOES

This online survey takes occupants approximately 10 minutes to complete. It has been developed to:

  • Meet B3 Guidelines requirement (FREE administration and analysis for B3 buildings)
  • Examine occupants’ satisfaction with the IEQ criteria in their physical environments
  • Generate an IEQ Score of occupants’ satisfaction
  • Measure “vital signs” of the building’s IEQ based on occupants’ perceptions
  • Direct attention to areas of success or those needing improvement
  • Compare IEQ of building to benchmarks

The SPOES is required and is free to B3 buildings. It is also available for non-B3 buildings for a fee (see Fee Schedule). It is administered and analyzed by B3 staff.

B3 Buildings can add IEQ Modules for Additional Analysis

Are you interested in additional information on your building’s indoor environmental quality?
B3 staff members have developed several modules that supplement the SPOES. These modules can be used to assess occupant satisfaction with specific topics such as ergonomics, lighting, or privacy. Additionally, they can be used to evaluate occupants’ perception of their performance/productivity as it relates to the IEQ of the building. Take a look at the modules we’ve developed to collect and analyze specific data on each criteria. Each module can be administered in conjunction with the SPOES and will require 5-10 minutes of occupants’ time. Modules can be added for a fee (see Fee Schedule).

  • Performance Module: Occupants’ performance related to primary workspace for 15 IEQ categories and attributes for lighting, acoustics, and thermal conditions.
  • Health Module: Overall health related to primary workspace for 15 IEQ categories and attributes for lighting, acoustics, and thermal conditions.
  • Ergonomics Module(s): Separate modules for satisfaction, performance, and health as related to occupants’ primary workspace.
  • Privacy Module(s): Separate modules for satisfaction, performance, and health as related to acoustic and visual privacy.
  • Alternative Workspace Module(s): Separate modules for satisfaction, performance, and health as related to IEQ of alternative workspaces.

The B3 team can also conduct a Pre-Occupancy Evaluation (PreOE) of your building to assist with benchmarking, programming, or problem identification.