Universität Stuttgart | Institut für Bauökonomie | Dipl.-Ing. Maike Buttler Doctoral Session - ERES Conference - June 2009 CASBEE since 2001 DGNB since.
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Univ
ers
ität
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art
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Inst
itu
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Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
CASBEEsince 2001
DGNBsince 2007
BREEAMsince 1990
LEEDsince 1998
HK Beamsince 2003
Green Starsince 2003
Comparing the Benefits of International BuildingSustainability Assessment Methods
HQEsince 1996
Minergie Eco P
since 1998
Univ
ers
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Stu
ttg
art
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Inst
itu
t fü
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auöko
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Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Table of Contents
• Background• Defining the Problem• Objective• Existing Precedents• Methodology
Univ
ers
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Stu
ttg
art
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Inst
itu
t fü
r B
auöko
nom
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Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Social
Concept of Sustainability
Energy
Economy
Ecology
Comfort
Health
Resource
Impact
Investment Cost
Operating Cost
Design
Function
Transport
Site
Back
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Defin
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Ob
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Exis
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Meth
od
olo
gy
Univ
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art
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Inst
itu
t fü
r B
auöko
nom
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Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Sustainability Standards
CASBEEsince 2001
DGNBsince
2007
HQEsince
1996
Minergie P Ecosince 1998
BREEAMsince 1990
LEEDsince
1998HK
Beamsince 2003
Green Starsince 2003
Back
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Defin
ing
th
e P
rob
lem
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Ob
ject
ive |
Exis
tin
g P
rece
den
ts |
Meth
od
olo
gy
Univ
ers
ität
Stu
ttg
art
|
Inst
itu
t fü
r B
auöko
nom
ie |
Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Lack of transparency for developers, owners and tenants regarding expenses and benefits
• What certificate can provide which benefits?• Which opportunities and which risks are associated with obtaining a
certificate? • Is it just a new name for the same old product?
► Research into the economy of construction and occupancy of certified properties.
Defining the Problem
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Defin
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Ob
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Exis
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Meth
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Univ
ers
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ttg
art
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Inst
itu
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r B
auöko
nom
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Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Benefits
Developer/Building Owner• Improve sale/rental price• Subsidies• “Green” Image
Occupant/Tenant• Improve comfort and
health• Reduce waste of resource• Reduce operating cost
Deciding factors for developers, owners and tenants
Which certificate requires…•…higher initial expenses?•…more benefits?
Objective
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Benefit of Certified
Properties≥
ConventionalProperties ?
Expenses
Developer/Building Owner• Audit cost• Investment cost
Occupant/Tenant• Sales/rental price
Univ
ers
ität
Stu
ttg
art
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Inst
itu
t fü
r B
auöko
nom
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Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Existing Precedents
• Overview of several tools on the German market analyzing their framework, structure and criteria> DGNB most comprehensive
• First opinion surveys among developers, owners and tenants> Growing interest
• Comparing costs and benefits of certified and conventional buildings
(for example US: LEED)> It’s worth investing
‣ Need of Further Research
• Find out the needs of developers, owners and tenants in detail
• Compare these needs to the Benefit of International Standards as well as with existing German standards and lawsB
ack
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Meth
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Univ
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Inst
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auöko
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Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Module 1
Surveys and interviews with:
• Developers• Building owners• Tenants
‣ Identify the interests of developers, building owners and tenants‣ Define economic criteria for Case Study Research
Methodology
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Exis
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Meth
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Univ
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Inst
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auöko
nom
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Dip
l.-I
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. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Module 2
Empirical Research of Case Studies of certified versus conventional
properties
• Structural measures
• Construction Strategy
• Occupancy Strategy
• Local Market
Methodology
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Economic criteria
Office BuildingsBuilt after 2000Certified by LEED, BREEAM and DGNB
Univ
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Inst
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auöko
nom
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Dip
l.-I
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. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
Module 3
Analysis of Case Studies
Description
• Structural measures
• Construction Strategy
• Occupancy Strategy
• Local Market
Methodology
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Input/OutputFactor
Univ
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Dip
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. M
aik
e B
utt
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Doctoral Session - ERES Conference - June 2009
Module 4
Comparison of Case Studies‣ Identifying factors for success and/or failure‣ Drawing conclusions regarding the value of each certificate
Methodology
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Defin
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Input/OutputFactor
Input/OutputFactor
Input/OutputFactor
Input/OutputFactor
DGNB BREAAM LEED Convent.
Univ
ers
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ttg
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Inst
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t fü
r B
auöko
nom
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Dip
l.-I
ng
. M
aik
e B
utt
ler
Doctoral Session - ERES Conference - June 2009
CASBEE
DGNBBREEAM
LEED
HK Beam
Green Star
Thank you for your time and attention!
HQEMinergie Eco
P
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