- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 29 Sep 2017
Post Occupancy Evaluation: operational performance of a refurbished office building
This article originally appeared as a BSRIA blog post, Post Occupancy Evaluation: operational performance of a refurbished office building, published in June 2015. It was written by was written by Dr Michelle Agha-Hossein BEng (Hons), EngD, Sustainable Building Consultant for BSRIA’s Sustainable Construction Group.
My Engineering Doctorate project aimed to investigate how and to what extent office building refurbishment can help to improve occupants’ satisfaction, perceived productivity and well-being while optimising the building’s operational performance.
A case study approach and a “diagnostic” post-occupancy evaluation style of framework were adopted in this study to evaluate the performance of a recently refurbished 5-storey office building in detail and find opportunities to reduce the gap, if any.
- physical conditions
- interior use of space
- indoor facilities
Employee surveys and interviews revealed that interior use of space was the most important aspect of the building influencing occupants’ perceived productivity, well-being and enjoyment at work (happiness) while the improvement of the indoor facilities had no significant effect. The study also concluded that issues with the physical conditions (such as noise and temperature) causes negative effects on perceived productivity but improving this aspect to a higher level than it is required would not necessarily increase perceived productivity.
In contrast, improving the interior use of space aspect of a workplace would increase employees’ perceived productivity proportionally. These results, however, should be considered with caution as employee’s satisfaction surveys and interviews revealed that employees’ levels of expectation might have affected their levels of satisfaction with their new work environment. This could cause some bias in the results of buildings’ performance evaluation. A potential solution to this issue is to measure occupants’ expectations for their future workplace at the design stage to try to fulfil these expectations as much as possible.
How well the new work environment met occupants’ expectations is another factor that should be measured at the post-occupancy stage. It was also noted that the occupants density was low at the time of the study (17.7m2/person) and that the space was not fully and effectively utilised and more than 50% of the workstations were often not in use. The link between improving space utilisation and the building’s energy consumption as well as its occupants’ perceived productivity and wellbeing merits further investigation. These results are important in the projects where increasing productivity is a key and the budget is limited.
[New refurbished work environment]
[Old work environment]
In terms of energy performance and CO2 emission, it was revealed that the actual emission of the building was three times more than the design target. Most of the low cost opportunities identified to reduce the gap were related to the building management and control as well as occupants’ behaviour.
[Total electricity consumption per sub-meter at the building in July]
 Related articles on Designing Buildings Wiki.
Featured articles and news
BRE partner with Global GreenTag to develop an Ethical Labour Sourcing Standard for Australia.
The Chartered Quality Institute explain the pathway to success for organisations implementing management systems.
An introductory article looking at where a duty of care can arise in the construction industry.
House of Lords committee encourages the use of off-site manufacturing in new report.
Computational fluid dynamics (CFD) can go some way to show the impact of new buildings on their surroundings.
The shortlist for the 2018 prize for the UK's best new building is revealed.
Amendment to Bill aims to provide councils with greater powers to increase tax premiums on empty homes.
As the latest summer blockbuster 'Skyscraper' is released, we look at some of the best uses of buildings in film.
Read our introductory article on how to layout a building.
New cross-party report calls for combustible cladding ban to be extended to all high-rise residential buildings.