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Doctoral Session - ERES Conference - June 2009

CASBEEsince 2001

DGNBsince 2007BREEAM

since 1990

LEEDsince 1998

HK Beamsince 2003

Green Starsince 2003

Comparing the Benefits of International BuildingSustainability Assessment Methods

HQEsince 1996

Minergie Eco P

since 1998

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Doctoral Session - ERES Conference - June 2009

Table of Contents

• Background• Defining the Problem• Objective• Existing Precedents• Methodology

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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

grou

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Defi

ning

the

Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

dolo

gy

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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

grou

nd |

Defi

ning

the

Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

dolo

gy

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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

Back

grou

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Defi

ning

the

Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

dolo

gy

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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

Back

grou

nd |

Defi

ning

the

Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

dolo

gy

Benefit of Certified

Properties≥

ConventionalProperties ?

Expenses

Developer/Building Owner• Audit cost• Investment cost

Occupant/Tenant• Sales/rental price

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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 lawsBack

grou

nd |

Defi

ning

the

Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

dolo

gy

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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

Back

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Defi

ning

the

Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

dolo

gy

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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

Back

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Defi

ning

the

Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

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gy

Economic criteria

Office BuildingsBuilt after 2000Certified by LEED, BREEAM and DGNB

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Doctoral Session - ERES Conference - June 2009

Module 3

Analysis of Case Studies

Description

• Structural measures

• Construction Strategy

• Occupancy Strategy

• Local Market

Methodology

Back

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Defi

ning

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Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

dolo

gy

Input/OutputFactor

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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

Back

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Defi

ning

the

Prob

lem

| O

bjec

tive

| Ex

istin

g Pr

eced

ents

| M

etho

dolo

gy

Input/OutputFactor

Input/OutputFactor

Input/OutputFactor

Input/OutputFactor

DGNB BREAAM LEED Convent.

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Doctoral Session - ERES Conference - June 2009

CASBEE

DGNBBREEAM

LEEDHK Beam

Green Star

Thank you for your time and attention!

HQE Minergie Eco P