EN 17680:2023
(Main)Sustainability of construction works - Evaluation of the potential for sustainable refurbishment of buildings
Sustainability of construction works - Evaluation of the potential for sustainable refurbishment of buildings
This document provides a methodology for the evaluation of the potential for sustainable refurbishment of an existing building, as a means of contributing to the circular economy, to support the decision-making process. Sustainable refurbishment aims to close the gap between current performance and current requirements fulfilling authorities’ sustainability regulations and contribute to meet sustainability goals which maximizes the environmental, social and economic performance. It also aims to allow the adaptability to fulfil future needs. It can be used for a building or part(s) of a building, as well as a portfolio of buildings.
This document gives a methodology for assessing performance characteristics of existing buildings in terms of:
1) Technical aspects
2) Adaptability
3) Usability
4) Social aspects
5) Energy, water and operational impacts
6) Quality of indoor environment (including health aspects)
7) Economic feasibility
8) Climate change resilience
9) Embodied environmental impacts
The document describes the work to be done in main applicable categories of a 6 steps process:
• Step 0: Establish brief of the object of the assessment
• Step 1: Evaluating the building
• Step 2: Sustainable deconstruction
• Step 3: Sustainable construction process
• Step 4: Sustainable commissioning
• Step 5: Sustainable in use
NOTE In this document the users are people and organisations using the building, including the facility management. In some buildings visitors are also important users and need to be taken into account.
This approach is generic for all types of buildings. At present this document does not cover civil engineering work and it does not give benchmarks for the evaluation.
Assessment of the impacts of sustainable refurbishment of buildings is covered by calculation methods described in EN 15978, EN 16309 and EN 16627.
Nachhaltigkeit von Bauwerken - Bewertung des Potentials zur nachhaltigen Modernisierung von Gebäuden
Dieses Dokument enthält eine Strategie und Vorgehensweise zur nachhaltigen Modernisierung eines bestehenden Gebäudes und eine Bewertung des Potentials zur nachhaltigen Modernisierung als Beitrag zur Kreislaufwirtschaft (Circular Economy), um den Entscheidungsprozess zu unterstützen. Ziel der nachhaltigen Modernisierung ist es, die Lücke zwischen gegenwärtiger Qualität und gegenwärtigen Anforderungen bei der Erfüllung der nationalen Bestimmungen zu schließen und zur Erfüllung der Nachhaltigkeitsziele beizutragen, wodurch die umweltbezogene, soziale und ökonomische Qualität maximiert wird. Sie soll außerdem die Anpassbarkeit an zukünftige Bedürfnisse ermöglichen. Sie kann sowohl für ein Gebäude oder Gebäudeteil(e) als auch für einen ganzen Gebäudebestand angewendet werden. Dieses Dokument enthält eine Methodik für die Bewertung der Qualitätsmerkmale von bestehenden Gebäuden, im Sinne von:
a) technischen Aspekten;
b) Anpassbarkeit;
c) Nutzbarkeit;
d) soziale Aspekte;
e) Energie und Wasser (betriebliche Auswirkungen);
f) Qualität des Raumklimas (einschließlich Gesundheitsaspekte);
g) wirtschaftlicher Durchführbarkeit;
h) Widerstandsfähigkeit gegen Klimawandel;
i) damit verbundene Umweltauswirkungen.
Das Dokument beschreibt die auszuführenden Arbeiten in den Hauptkategorien eines 6-stufigen Prozesses:
Schritt 0: Nutzeranforderungen an den Bewertungsgegenstand festlegen;
Schritt 1: Bewertung des Gebäudes;
Schritt 2: nachhaltiger Rückbau;
Schritt 3: nachhaltiger Bauprozess;
Schritt 4: nachhaltige Inbetriebnahme;
Schritt 5: Nachhaltigkeit während der Nutzung.
ANMERKUNG In diesem Dokument sind die Gebäudenutzer Personen und Organisationen, die das Gebäude nutzen, einschließlich des Facility Managements. In einigen Gebäuden sind Besucher auch wichtige Gebäudenutzer und müssen berücksichtigt werden.
Dieser Ansatz ist für alle Gebäudearten gleich. Zurzeit werden in diesem Dokument keine Ingenieurbauwerke behandelt und es werden keine Bewertungsmaßstäbe für die Bewertung angegeben.
Dieses Dokument ermöglicht es, eine Strategie für eine nachhaltige Modernisierung des gesamten Gebäudes, eines Teils davon oder eines ganzen Gebäudekomplexes zu erarbeiten.
Die Bewertung der Auswirkungen einer nachhaltigen Modernisierung von Gebäuden wird durch die in EN 15978, EN 16309 und EN 16627 beschriebenen Berechnungsverfahren abgedeckt.
Contribution des ouvrages de construction au développement durable - Évaluation du potentiel d'une réhabilitation contribuant au développement durable d'un bâtiment
Le présent document fournit une stratégie et une méthode de réhabilitation contribuant au développement durable d'un bâtiment existant ainsi qu'une méthode d'évaluation du potentiel d'une réhabilitation, en tant que moyen de contribution à l'économie circulaire, afin de soutenir le processus de décision. Une réhabilitation contribuant au développement durable a pour objectif de combler l'écart entre les performances et les exigences réglementaires nationales actuelles sur la contribution au développement durable et de contribuer à atteindre les objectifs de développement durable qui maximisent les performances environnementales, sociales et économiques. Elle vise également à permettre l'adaptabilité afin de répondre aux besoins futurs. Elle peut s'appliquer à un bâtiment ou à une ou plusieurs parties de celui-ci, ou encore à un parc de bâtiments. Le présent document fournit une méthode d'évaluation des caractéristiques de performance des bâtiments existants en termes de :
a) aspects techniques ;
b) adaptabilité ;
c) aptitude à l'usage ;
d) aspects sociaux ;
e) énergie et eau (impacts opérationnels) ;
f) qualité de l'environnement intérieur (y compris les aspects sanitaires) ;
g) faisabilité économique ;
h) résilience face au changement climatique ;
i) impacts environnementaux intrinsèques.
Le document décrit le travail à effectuer dans les principales catégories applicables d'un processus en 6 étapes :
- étape 0 : établissement du programme de l'objet de l'évaluation ;
- étape 1 : évaluation du bâtiment ;
- étape 2 : déconstruction contribuant au développement durable ;
- étape 3 : processus de construction contribuant au développement durable ;
- étape 4 : mise en service contribuant au développement durable ;
- étape 5 : contribution au développement durable en exploitation.
NOTE Dans le présent document, les usagers désignent des personnes et des organisations qui utilisent le bâtiment, y compris les gestionnaires des installations. Dans certains bâtiments, les visiteurs sont également des usagers importants et il est nécessaire de les prendre en compte.
Cette approche est générique pour tous les types de bâtiments. Le présent document ne couvre pas pour le moment les ouvrages de génie civil et ne fournit pas de valeurs de référence pour l'évaluation.
Le présent document permet d'élaborer une stratégie de réhabilitation contribuant au développement durable de l'ensemble d'un bâtiment, d'une partie d'un bâtiment ou d'un parc de bâtiments.
L'évaluation des impacts d'une réhabilitation contribuant au développement durable des bâtiments est couverte par les méthodes de calcul décrites dans l'EN 15978, l'EN 16309 et l'EN 16627.
Trajnostnost gradbenih objektov - Ovrednotenje možnosti trajnostne prenove stavb
Ta dokument določa proces za ovrednotenje možnosti trajnostne prenove obstoječih stavb kot način, ki prispeva h krožnemu gospodarstvu. Ta dokument podaja smernice za ocenjevanje učinkovitosti obstoječih stavb in s tem določanju nadaljnjih ukrepov: prenova za podoben ali nov način uporabe, uporaba v obstoječem stanju ali rušenje. Cilj trajnostne prenove je zmanjšati vrzel med trenutno učinkovitostjo in trenutnimi zahtevami. Izvede se lahko za stavbo ali del(-e) stavbe ter tudi za skupine stavb.
Ta dokument določa metodo za ocenjevanje učinkovitosti obstoječih stavb:
– Tehnične (vključno z energijskimi) lastnosti
– Uporabnost za uporabnike
– Prilagodljivost na spremembe
– Notranje okolje (zdravstveni vidiki)
– Ekonomska izvedljivost
– Vključeni vplivi na okolje
Ta dokument opisuje delo, ki ga je treba izvesti v zvezi z glavnimi veljavnimi kategorijami postopka s petimi koraki:
– 1. korak: Ovrednotenje stavbe
– 2. korak: Trajnostna odstranitev
– 3. korak: Trajnostni proces gradnje
– 4. korak: Oddaja v trajnostno obratovanje
– 5. korak: Trajnostna uporaba
Opomba: V tem standardu so uporabniki osebe in organizacije, ki delajo v stavbi, vključno z vodstvom objekta. V nekaterih primerih so obiskovalci stavbe prav tako pomembni uporabniki.
Ta pristop je splošen za vse vrste stavb. Dokument ne zajema nizkih gradenj in ne določa referenčnih vrednosti za ovrednotenje.
Ocena vplivov trajnostne prenove stavb je zajeta v računske metode, opisane v standardu EN 15978, od 1. do 3. dela.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2023
Trajnostnost gradbenih objektov - Ovrednotenje možnosti trajnostne prenove
stavb
Sustainability of construction works - Evaluation of the potential for sustainable
refurbishment of buildings
Nachhaltigkeit von Bauwerken - Bewertung des Potentials zur nachhaltigen Sanierung
von Gebäuden
Contribution des ouvrages de construction au développement durable - Évaluation du
potentiel d'une réhabilitation contribuant au développement durable d'un bâtiment
Ta slovenski standard je istoveten z: EN 17680:2023
ICS:
13.020.20 Okoljska ekonomija. Environmental economics.
Trajnostnost Sustainability
91.040.01 Stavbe na splošno Buildings in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17680
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2023
EUROPÄISCHE NORM
ICS 91.200
English Version
Sustainability of construction works - Evaluation of the
potential for sustainable refurbishment of buildings
Contribution des ouvrages de construction au Nachhaltigkeit von Bauwerken - Bewertung des
développement durable - Évaluation du potentiel d'une Potentials zur nachhaltigen Sanierung von Gebäuden
réhabilitation contribuant au développement durable
d'un bâtiment
This European Standard was approved by CEN on 2 July 2023.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17680:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 7
3.1 Terms and definitions . 7
3.2 Abbreviations . 12
4 Sustainable refurbishment, general principles . 13
5 Evaluation of building condition and performance . 17
5.1 General process . 17
5.2 General procedure . 18
5.3 Preparing the evaluation of the existing building . 19
5.3.1 Establishing the brief. 19
5.3.2 Definition of requirements . 19
5.3.3 Execution plan and competence requirements . 19
5.3.4 Acquisition and sustainable assessment of building and available building information 19
5.3.5 Assessment criteria and performance classes . 19
5.4 Condition registration and analysis . 20
5.4.1 Registration of condition and determination of performance classes . 20
5.4.2 Determination of performance classes for inaccessible parts . 21
5.5 Analysis and evaluation process for sustainable refurbishment . 21
5.5.1 Grade classes of consequences for Step 1 and Step 2 . 21
5.5.2 Evaluating the building — step 1 . 22
5.5.3 Sustainable deconstruction — Step 2 . 27
5.5.4 Sustainable construction process — Step 3 . 28
5.5.5 Commissioning – step 4 . 28
5.5.6 Sustainable in use – step 5 . 29
6 Final report . 30
6.1 Content of report . 30
6.2 Presentation and communication of results . 32
Annex A (informative) Example of classification of indicators in performance and performance
classes, from 0 – 3 . 33
Bibliography . 43
European foreword
This document (EN 17680:2023) has been prepared by Technical Committee CEN/TC 350 “Sustainability
of construction works”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by February 2024, and conflicting national standards shall
be withdrawn at the latest by February 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
Introduction
This document forms a part of a series of European Standards written by CEN/TC 350, that provide a
system for the sustainability assessment of buildings using a life cycle approach. The sustainability
assessment quantifies impacts and aspects for environmental, social and economic performance of
buildings using quantitative and qualitative indicators, both of which are measured without value
judgement. The purpose of this series of European Standards is to enable comparability of the results of
assessments. This series of European Standards does not set benchmarking or levels of performance.
European (and other) countries face big challenges transforming the existing building stock to
environmentally, economically and socially feasible buildings for the future within a low carbon society
and a higher focus on resource efficiency as a contribution to sustainable development. The
transformation and reduction of environmental impacts of existing buildings should be done in a cost-
effective manner and hence the refurbishment should be accessible and sustainable in all senses (i.e.
environmental, social and economic). The need for refurbishment emerges due to the increasing
demands for better-quality housing and the quest for energy efficiency of commercial and industrial
buildings.
In concept, the integrated building performance incorporates environmental, social and economic
performance as well the technical and functional performance, and these are intrinsically related to each
other, as illustrated in Figure 3. This document defines a simple method for qualifying the considerations
to be made in relation to evaluating the potential of refurbishing an existing building and serves to
determine the most sustainable and cost-effective approach to improve performance to comply with
national regulatory requirements, among other things. In the interest of conserving resources, options
for extended use and refurbishment are to be examined intensively and, if suitable, are to be given
preference over new construction. This document is a part of the framework of standards for
sustainability of buildings as shown in Figure 1.
This document is primarily designed to support the strategic decision process on how to refurbish
existing building(s) in a sustainable way, taking into consideration that not all buildings should be
refurbished if the existing conditions of a building do not permit. A starting point for decisions on
(further) handling of existing buildings is a comprehensive analysis. This includes a building diagnosis to
determine damage and deficiency as well as an assessment of the current technical and functional
performance. The potential for an improvement in building performance and (as far as possible) the
effort required for this are assessed. An alignment with requirements and possibilities resulting from
future user requirements or possible uses, the changing environment concerning politics and legislation,
market situation, environmental conditions and social values, as well as technical progress, is possible.
The results of the analysis can be used to make fundamental decisions on how to deal with existing
buildings. If refurbishment or repurposing are viable options, these can be investigated using the results
of a building diagnosis and being subjected to a sustainability assessment in accordance with EN 15643.
In this document, a procedure is offered to support the methodology for assessing performance
characteristics of existing building based on an indicator system and classification levels. Examples are
given in an informative annex.
Figure 1 — Framework standards for sustainability of buildings
Refurbishment can be seen as an opportunity, not only to modernize a building’s aesthetic, but also to
enhance its overall technical and functional (usability) performance, and its potential contribution to the
surrounding environment and local community.
The transformation should be done in a cost-effective manner and hence the refurbishment should be
sustainable. This document gives a simple method for which buildings to be given first priority for a
sustainable refurbishment also taking into consideration that not all buildings should be refurbished.
Benefits of sustainable refurbishment in comparison to deconstruction and redevelopment are:
— reduced landfill disposal;
— contribution to extending whole building lifetime;
— reduced environmental footprint through greater conservation and reuse of materials;
— contributing to lower life cycle costs;
— reduction in overall embodied environmental impact relative to new building.
Other benefits may include:
— retention of community infrastructure;
— additional benefits of local economic development;
— neighbourhood renewal and well-being for all stakeholders;
— protection for built cultural heritage;
— better adaptation to climate change (e.g. limiting the solar gain in summer).
1 Scope
This document provides a strategy and methodology for sustainable refurbishment of an existing
building and evaluation of the potential of sustainable refurbishment, as a means of contributing to the
circular economy, to support the decision-making process. Sustainable refurbishment ai
...
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