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GRESB participation

The share of Bouwinvest’s investments that participate in GRESB in the reporting period, weighted against the NAV at the end of said reporting period.

GRESB score

The GRESB (Global Real Estate Sustainability Benchmark) score is a measurement of the ESG performance of an entity – shown as a number between 0 and 100. The score is the result of an annual assessment by GRESB of the real estate entity.   

GRESB star rating

The GRESB star rating is based on the GRESB score and the relative position in the entire GRESB universe, which is determined each year on the basis of the scores. If an entity ends in the top 20% it is awarded a five-star rating. If an entity ends in the lowest 20% it is given a one-star rating, etc. Due to the fact that the GRESB star rating is calculated as a relative score vis-a-vis the worldwide scores of participating entities, the rating shows a fund’s performance on a worldwide scale.  

Above-average sustainable investments

These are investments with a GRESB 4 or 5-star rating. The share is shown as a percentage of the total NAV at the end of a reporting period. Investments participating in GRESB for the first time are given the option of not publishing their performance. If the score is communicated to Bouwinvest, this is included in its overall score.

Green portfolio

This is the share of lettable floor area (LFA) with an A, B or C energy label, as a percentage of the total lettable floor area of the portfolio of Dutch sector funds. For the residential portfolio, the green portfolio share is calculated per residential unit.

Energy index of the portfolio

This is the average energy index of the Dutch real estate portfolio, weighted according to lettable floor surface. Real estate investments without an energy index are not included in the calculation. For the residential portfolio, the average energy index is calculated per residential unit.

Certified sustainable portfolio (Dutch sector funds)

This is the relative share of real estate investments in a portfolio that have been formally assigned a sustainable building certificate (such as BREEAM-NL and GPR Building) at the end of a reporting period, as a percentage of the total portfolio (on the basis of m² LFA).

Certified sustainable portfolio (International mandates)

This is the average score of the investments on the Building Certificates aspect in the GRESB assessment, weighted against the total NAV of the International mandate investments that participate in GRESB.

Reduction of energy consumption (Dutch sector funds)

This is the percentage change in energy consumption (electricity and gas) at the end of the reporting period, compared with the previous year on a like-for-like basis for energy meters under the direct control of the funds. Like-for-like refers to the energy consumption of a portfolio with consistent activities in the comparative periods. Gas consumption is converted from m3 into kWh on the basis of the conversion factors published at the end of the period at The gas consumption in the year under review is adjusted for the differences in the figures for ‘degree days’ (actual average day temperatures versus an agreed level) in De Bilt (the Netherlands) between the year under review and the previous year.

Reduction of energy consumption (International mandates)

This is the average like-for-like energy reduction (year-on-year), as reported by GRESB, weighted according to the NAV of international investments that participate in GRESB. Any reduction is based on the energy consumption period year one versus year two.

Energy, emission and water intensity

Energy, emission and water intensity is reported on the basis of like-for-like use data and lettable floor area. This pertains to collectively purchased components and consumption data for common areas, as well as consumption data for leased areas that are not individually metered. Both scope 1 and scope 2 emissions data are included in the measurement.

Solar panels installed (Dutch sector funds)

This is the amount of installed capacity (measured in kilowatt peak - KWp) from solar panels in the portfolio.

Share of renewable energy (International mandates)

This is the share of renewable energy in the total consumption of the international investments that participate in GRESB, as reported annually by GRESB.  This consists of renewable energy that is generated and used/exported within the investments and that is generated outside the investments and used within the investments.

Considerate Building Sites

This is the share of the building sites related to Bouwinvest’s acquisitions or renovations that are registered as Considerate Building Sites under the Dutch Considerate Builders (Bewuste Bouwers) scheme in the reporting period, weighted according to acquisition price.

Membership of sector organisations

This is the number of employees who are active members of boards or working groups of a real estate sector organisation in the reporting period.

Knowledge platform aimed at innovation

A knowledge platform is an interactive online/offline environment used to facilitate knowledge exchange and networking between various parties, with the aim of re-using existing knowledge and the development of new knowledge and technologies that contribute to the improved performance of real estate. This is also referred to as PropTech.

Addition of mid-rental segment homes

This is the total number of new homes added to the Dutch residential portfolio with a rental price between €711 and €1,250 per month in the reporting period.

Compliance incident

This is an act or an event that endangers the ethical performance of Bouwinvest’s business operations or those of one of its affiliated companies, such to include the violation of laws or regulations, fraud, corruption and the violation of a duty of confidentiality.

Personal data security incident

This is the number of major incidents involving the failure to comply with legal provisions and standards in the field of personal data protection, or security incidents that may be deemed data breaches. An incident qualifies as major if Bouwinvest is obliged to report said incident to a regulator, if a regulator or similar official body filed a report with Bouwinvest, or if an external party files a complaint with Bouwinvest and Bouwinvest considers said complaint legitimate.

Like-for-like reduction of emissions

Like-for-like data and changes pertain to real estate assets in our portfolio that were owned by Bouwinvest for the full period of 24 months and were operational in that period. Real estate assets that were acquired, sold or underwent a major renovation in this period are not included. The total emissions figures pertains to direct CO2 emissions (scope 1) and indirect CO2 emissions (scope 2) generated by electricity, gas and district heating systems. Total net CO2 emissions after compensation is the total CO2 emissions after offsetting and compensation via Guarantees of Origin. To calculate CO2 emissions, Bouwinvest uses country-specific and energy source-specific conversion factors that can change from year to year. Bouwinvest uses the most recent conversion factors (source:

Tenant Satisfaction

The total tenant satisfaction score is the unweighted average total score of the tenant satisfaction score per sector fund in the year under review. The score at fund level is also unweighted and average.

Client appreciation

This is the average score clients (pension funds, insurance firms and charitable organisations) have given in satisfaction surveys in a certain reporting year.

Employee satisfaction

This is the unweighted average score in the biennial employee satisfaction survey.

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