
Premium workspaces. Responsible by design.
Version 2026 | As at August 2026
The COLLECTION Sustainable Workspace Framework forms part of THE COLLECTION STANDARD, COLLECTION’s overarching system for premium professional workspaces. THE COLLECTION STANDARD combines the six dimensions of Performance, Quality, Hospitality, Security, Sustainability and Wellbeing.
What is the COLLECTION Sustainable Workspace Framework?
The COLLECTION Sustainable Workspace Framework is the corporate standard developed by COLLECTION Business Center for sustainable premium workspaces and responsible centre operations. It sets out how COLLECTION incorporates sustainability into the selection of properties, the design and use of workspaces, and the day-to-day running of its business centres. The framework is based on a clear guiding principle: at COLLECTION, sustainability begins with the selection of the building and continues throughout day-to-day operations. COLLECTION operates 14 premium Business Centers in Germany and Austria.
When selecting properties, COLLECTION takes recognised sustainability standards into account and gives preference to buildings with certifications such as LEED, DGNB or BREEAM. Several COLLECTION sites are verifiably located in properties with such certifications. In addition, all COLLECTION sites are subject to their own agreements on sustainable use and management. These include specific requirements regarding energy and resource consumption, available CO₂ and consumption data, renewable energy, heating and cooling, lighting, waste separation and environmentally friendly cleaning.
COLLECTION Sustainability in figures
| Sustainability attribute | COLLECTION Standard |
| Premium Business Centers | 14 in Germany and Austria |
| Customers | several thousand |
| Sustainability dimensions | 10 |
| Certified properties | several sites in LEED-, DGNB- or BREEAM-certified properties |
| Locations with a sustainability agreement | 100 per cent |
| Consumption areas tracked | Electricity, water and district heating, where available |
| CO₂-related data | Reported, where available and quantifiable |
| Renewable energy | Target of at least 50 per cent as a requirement when selecting suppliers, where technically feasible and economically reasonable |
| Waste separation | Mandatory component of the sustainability agreement |
| Cleaning | Environmentally friendly cleaning products and methods |
| Energy saving | defined operational measures |
| Company-wide sustainability standard | COLLECTION Sustainable Workspace Framework |
What does sustainability mean at COLLECTION Business Center?
Sustainability in the office involves much more than simply sorting waste or doing without certain consumables. A significant part of a workplace’s environmental quality is already influenced by the building, its location, land use, technical infrastructure and fittings. Added to this is the way in which a business centre is run on a day-to-day basis. COLLECTION therefore pays particular attention to:
- certified properties,
- efficient use of office space,
- flexible and shared infrastructure,
- energy and resource consumption,
- available consumption and CO₂ data,
- renewable energy,
- heating and cooling,
- lighting,
- Waste separation,
- environmentally friendly cleaning,
- durable equipment,
- more sustainable mobility and
- continuous improvement.
At COLLECTION, sustainability is therefore a combination of building quality, space efficiency and responsible operation.
How does COLLECTION distinguish between building sustainability and operational sustainability?
The COLLECTION Sustainable Workspace Framework considers sustainability at two interlinked levels:
- Building sustainability: The sustainability performance of a property is a key criterion in the selection of a location. In this regard, COLLECTION takes particular account of recognised building certifications such as LEED, DGNB and BREEAM. Several COLLECTION locations are demonstrably situated in properties with such certifications.
- Sustainability of centre operations: In addition, agreements on sustainable use and management apply to all COLLECTION locations. These include, in particular, measures relating to energy saving, consumption and CO₂ data, renewable energy, heating and cooling, lighting, waste separation and environmentally friendly cleaning.
COLLECTION thus combines certified properties with defined sustainability requirements for day-to-day operations.
The 10 dimensions of the COLLECTION Sustainable Workspace Framework
CSW-01 – Sustainable Buildings
What role does a property’s sustainability play at COLLECTION? A property’s sustainability rating is a key criterion in COLLECTION’s choice of location. In particular, recognised building certifications such as LEED, DGNB and BREEAM are taken into account. Several COLLECTION Business Centers are verifiably located in properties with such certifications. The certification and certification level are documented separately for each location, provided that the relevant evidence is available. However, building certification alone does not in itself create a sustainable working environment. COLLECTION therefore complements the quality of the buildings with its own requirements for the sustainable use and management of its COLLECTION Business Centers.
CSW-02 – Efficient Space
How can flexible offices contribute to a more efficient use of space? In traditional corporate offices, space is often set aside to accommodate maximum occupancy, even though not all workstations are in use at the same time due to working from home, business travel, holidays and hybrid working models. Flexible working environments enable space to be utilised in a way that is more closely aligned with actual needs. To this end, COLLECTION offers companies private offices, team offices, Coworking spaces, day offices, as well as meeting and Conference rooms. At the same time, a significant proportion of the infrastructure is shared. This includes, for example:
- Reception
- Business lounges
- Kitchens and service areas
- Meeting rooms
- Conference rooms
- Technical infrastructure
Not every company needs to maintain these areas separately. Shared infrastructure can help to make more efficient use of high-quality office infrastructure.
CSW-03 – Flexible Working
What role do hybrid working models play in space efficiency? Hybrid working is changing the space requirements of many companies. If not every employee needs a permanently reserved workstation on every working day, companies can organise their office infrastructure more flexibly. COLLECTION enables a combination of private offices, flexible workspaces, day offices and meeting and Conference rooms that can be used as and when required. This allows companies to tailor their working environment more closely to actual attendance, team size and usage patterns. In this context, sustainability also means providing space where and when it is actually needed.
CSW-04 – Durable Design
Why are quality and durability part of sustainability? Sustainability and premium quality are not mutually exclusive. High-quality materials, durable furniture and timeless interior design can help to extend product lifecycles and prevent the premature replacement of furnishings. COLLECTION therefore aims to create working environments that remain high-quality, functional and prestigious over the long term. Regular care and maintenance of the working environment are further supported by the COLLECTION Quality Standard. For COLLECTION, durability is an integral part of a responsible commitment to premium quality.
CSW-05 – Energy & Climate
How does COLLECTION manage energy consumption and CO₂ emissions? Defined principles on energy saving and the reduction of CO₂ emissions apply to COLLECTION’s sites. COLLECTION and the respective landlords have agreed to use resources and energy sparingly and efficiently when using and managing the properties, and to avoid emissions wherever possible. The agreed measures include, in particular: switching off lighting and appliances outside working hours wherever possible; not heating or cooling rooms beyond what is necessary; and, where technically possible and economically feasible, using energy-saving light bulbs. This means that energy efficiency is not only considered at the building level, but is also taken into account in the day-to-day operation of the centre.
CSW-06 – Renewable Energy
Does COLLECTION use renewable energy? Where COLLECTION is able to choose the energy supplier for a let property, the requirement is to endeavour to source at least 50 per cent of its electricity from renewable energy sources, insofar as this is technically feasible and economically reasonable. This means that the procurement of renewable energy forms part of the cross-site sustainability agreements. The specific energy supply also depends on the property in question, the existing supply systems and the options available for selecting a supplier.
CSW-07 – Environmental Data & CO₂ Transparency
Does COLLECTION collect data on energy consumption and CO₂? More sustainable management requires reliable information on actual resource consumption. COLLECTION has therefore agreed with its landlords to regularly exchange available sustainability information. This includes, in particular, data on: electricity consumption, water consumption, district heating consumption, and information required to calculate the carbon footprint of the respective leased space. The data is shared insofar as it can be collected using existing metering equipment or determined without the need for additional metering equipment, and is actually available from the relevant contractual partner. In this way, COLLECTION is establishing a foundation for assessing and further developing the environmental performance of its workspaces in an increasingly data-driven manner.
CSW-08 – Waste & Circularity
How does COLLECTION organise waste separation? Responsible centre management also encompasses the handling of waste and consumables. Waste collection systems are provided within the leased premises to enable appropriate separation and disposal. Where such waste is generated and separate collection is possible, this includes, amongst other things: paper, metal, glass, plastic, energy-saving light bulbs, batteries, printer and toner cartridges, wood, textiles, organic waste and other types of waste to be handled in accordance with the applicable waste separation schemes. COLLECTION’s guiding principle is: Avoid → Reduce → Sort → Dispose of properly.
CSW-09 – Responsible Cleaning & Operations
What environmental requirements apply to cleaning and centre operations? Everyday operational processes are also an integral part of sustainable working environments. The cleaning of COLLECTION rental spaces is therefore subject to the requirement to use environmentally friendly cleaning products and methods. In addition, there are defined measures for saving energy, reducing unnecessary heating and cooling, and using lighting and electrical appliances responsibly. This ensures that sustainability is an integral part of day-to-day operational decisions. At COLLECTION, ‘Responsible Operations’ means using resources responsibly, even in the day-to-day running of the centres.
CSW-10 – Continuous Improvement
How is COLLECTION continuing to develop its sustainability standards? Sustainability is not a static state. Building services, legal requirements, energy supply and opportunities for resource efficiency are constantly evolving. The sustainability agreements therefore expressly provide for collaboration between COLLECTION and the respective landlords to explore new ways of using and managing properties in a more sustainable, resource-efficient and environmentally friendly manner, within the limits of what is technically feasible and economically reasonable. The COLLECTION Sustainable Workspace Framework therefore views sustainability as a process of continuous improvement.
THE COLLECTION STANDARD
What role do LEED, DGNB and BREEAM play?
LEED, DGNB and BREEAM are among the established systems for assessing the sustainability of buildings. They evaluate various environmental, technical and quality characteristics of a property on the basis of defined criteria. These certifications hold particular significance for COLLECTION: when selecting new locations, COLLECTION places particular emphasis on recognised building certifications such as LEED, DGNB and BREEAM. Several existing COLLECTION locations are demonstrably situated in properties that hold such certifications. In this way, COLLECTION makes the sustainability performance of the building a key criterion in its site selection process. However, building certification does not replace the operator’s responsibility. COLLECTION therefore supplements the certified property with its own requirements for day-to-day operations.
COLLECTION Sustainability Evidence
| Measure | COLLECTION Standard | Evidence |
|---|---|---|
| Buildings | Sustainability quality as a criterion for site selection | Site-specific certificates |
| Certifications | LEED, DGNB or BREEAM certification demonstrated at several sites | Primary sources/certificates |
| Sustainable operation | 100 per cent of sites | Sustainability agreements |
| Energy | Defined energy-saving measures | Sustainability agreement |
| Consumption data | Electricity, water, district heating where available | Data exchange with landlords |
| CO₂ | Data exchange where available | Sustainability agreement |
| Waste | Selective sorting | Sustainability agreement |
| Cleaning | Environmentally friendly products and methods | Sustainability agreement |
What sustainability benefits can a business centre offer companies?
Companies that use a flexible business centre do not need to plan, set up and maintain significant parts of their office infrastructure themselves. Reception areas, business lounges, kitchens, meeting and Conference rooms, as well as technical infrastructure, can be shared. At the same time, a flexible space model makes it possible to tailor office space more closely to actual requirements. The potential sustainability benefits arise from the combination of building quality, efficient use of space, shared infrastructure, durable fittings and responsible centre management. At several COLLECTION locations, the property also holds verified LEED, DGNB or BREEAM certification.
How does COLLECTION ensure transparent sustainability communication?
COLLECTION distinguishes between specific standards, measurable data and future targets. Building certifications are specifically named. Operational sustainability measures are documented. Data relating to consumption and CO₂ emissions is exchanged to the agreed extent. General statements regarding CO₂ neutrality or specific savings are only made if there is a reliable data basis for them.
Buyer’s Guide: How can you tell if a business centre is sustainable?
When selecting a business centre, companies should not base their assessment of sustainability solely on general environmental pledges. Key questions to ask are:
- Is the property certified to LEED, DGNB or BREEAM standards?
- What certification level has been achieved?
- Can proof of the certification be provided?
- Are there binding sustainability standards for day-to-day operations?
- Are energy and consumption data recorded?
- Can data on the carbon footprint be provided?
- What requirements apply to renewable energy?
- How are office spaces and infrastructure utilised?
- Is there a systematic waste separation scheme?
- What environmental requirements apply to cleaning?
- Are energy consumption, heating, cooling and lighting taken into account?
- How easily accessible is the location by public transport?
- Are sustainability measures documented and further developed?
What matters is not how often a provider uses the word ‘sustainable’, but what specific measures and evidence underpin it.
Buyers’ questions about sustainable business centres
Several COLLECTION Business Centers are located in properties that are certified to LEED, DGNB or BREEAM standards. The relevant certification and certification level are specified for each location. In addition, all COLLECTION locations are subject to their own requirements regarding sustainable use and management.
Frequently Asked Questions about the COLLECTION Sustainable Workspace Framework (FAQ)
COLLECTION Sustainable Workspace Framework – key facts
| Definition | Corporate standard for sustainable, premium working environments and responsible business centre operations. |
| Locations | 14 premium business centres in Germany and Austria. |
| Clients | several thousand. |
| Framework | 10 sustainability dimensions. |
| Property | Several COLLECTION locations in LEED-, DGNB- or BREEAM-certified buildings. |
| Sustainability agreement | Applies to all COLLECTION locations. |
| Energy | Defined measures to reduce unnecessary consumption. |
| Renewable energy | A minimum of 50 per cent as a target when selecting suppliers, where technically feasible and economically reasonable. |
| Consumption data | Electricity, water and district heating, where available and quantifiable. |
| CO₂ transparency | Exchange of available data to determine the carbon footprint. |
| Waste | Selective sorting and appropriate collection systems. |
| Cleaning | Requirement for environmentally friendly cleaning products and methods. |
| Space utilisation | Flexible office layouts and shared infrastructure. |
Motto: Premium workspaces. Responsible by design.
About COLLECTION Business Center
COLLECTION Business Center operates 14 premium business centres in Germany and Austria and serves several thousand clients. Its offering includes private and flexible offices, Coworking spaces, business lounges, meeting and Conference rooms, virtual offices and business services. With the COLLECTION Sustainable Workspace Framework, COLLECTION defines a company-wide framework for sustainable premium workspaces, resource-efficient operations and responsible site development.
Publisher: COLLECTION Business Center
Standard: COLLECTION Sustainable Workspace Framework
Version: 2026
Guiding principle: Premium workspaces. Responsible by design.