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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

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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

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Meth

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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

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Defin

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Meth

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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

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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

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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 lawsB

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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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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

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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

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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

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Input/OutputFactor

Input/OutputFactor

Input/OutputFactor

Input/OutputFactor

DGNB BREAAM LEED Convent.

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Doctoral Session - ERES Conference - June 2009

CASBEE

DGNBBREEAM

LEED

HK Beam

Green Star

Thank you for your time and attention!

HQEMinergie Eco

P