Construction Economics Construction Economics provides students with the principles and concepts underlying the relationship between economic theory and the construction industry. The new approach adopts an argument that economics is central to government initiatives concerning sustainable construction. This edition has been revised to explain the effects of the current economic crisis on the construction industry. In addition, sections relating to less developed countries, the economics of sustainable development and theories relating to a firm’s bid strategy have all been rewritten. With new data, examples, initiatives, readings, glossary items and references, the third edition of this established core text builds on the strengths of the previous edition: • a clear and user-friendly style • use of a second colour to highlight important definitions and formulae • regular summaries of key points • a glossary of key terms • extensive use of tables and figures • extracts from the academic journal Construction Management and Economics to consolidate and prompt discussion • reviews of useful websites. This invaluable textbook is essential reading across a wide range of disciplines from construction management and civil engineering to architecture, property and surveying. Danny Myers is a lecturer and researcher based in the Department of Construction and Property at the University of the West of England, UK, and visiting lecturer at the University of Bath, UK. 0000--PPrreelliimmss..iinndddd 11 1100--1111--22001122 1111::3355::5522 0000--PPrreelliimmss..iinndddd 22 1100--1111--22001122 1111::3355::5522 Construction Economics A new approach Third Edition Danny Myers 0000--PPrreelliimmss..iinndddd 33 1100--1111--22001122 1111::3355::5522 First edition published 2004 Second edition published 2008 This edition published 2013 by Routledge 2 Park Square, Milton Park, Abingdon, Oxon, OX14 4RN Simultaneously published in the USA and Canada by Routledge 711 Third Avenue, New York, NY 10017 Routledge is an imprint of the Taylor & Francis Group, an informa business © 2013 Danny Myers The right of Danny Myers to be identified as author of this work has been asserted by them in accordance with sections 77 and 78 of the Copyright, Designs and Patents Act 1988. All rights reserved No part of this book may be reprinted or reproduced or utilised in any form or by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying and recording, or in any information storage or retrieval system, without permission in writing from the publishers. Trademark notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation without intent to infringe. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library Library of Congress Cataloging-in-Publication Data Myers, Danny. Construction economics : a new approach / Danny Myers. — 3rd ed. p. cm. Includes bibliographical references and index. 1. Construction industry. 2. Construction industry—Management. I. Title. HD9715.A2M94 2013 338.4’7624—dc23 2012037199 ISBN13: 978-0-415-52778-1 (hbk) ISBN13: 978-0-415-52779-8 (pbk) ISBN13: 978-0-203-38443-5 (ebk) Typeset in Sabon by DSM Partnership 0000--PPrreelliimmss..iinndddd 44 1100--1111--22001122 1111::3355::5522 Contents List of Tables and Figures vi Acknowledgements ix Chapter 1: An Introduction to the Basic Concepts 1 Reading 1 25 Part A Effective Use of Resources 29 Chapter 2: Economic Systems for Resource Allocation 31 Chapter 3: The Market Mechanism 45 Chapter 4: The Theory of Demand 57 Chapter 5: The Theory of Supply 71 Chapter 6: Clients and Contractors 85 Chapter 7: Costs of the Construction Firm 97 Chapter 8: Types of Market Structure in the Construction Industry 123 Reading 2 137 Reading 3 140 Part B Protection and Enhancement of the Environment 143 Chapter 9: Markets for Green Buildings and Infrastructure 145 Chapter 10: Market Failure and Government Intervention 163 Chapter 11: Environmental Economics 179 Reading 4 197 Part C Economic Growth that Meets the Needs of Everyone 201 Chapter 12: Managing the Macroeconomy 203 Chapter 13: The Economy and Construction: Measurement and Manipulation 217 Chapter 14: The Business Case: Inflation and Expectations 245 Reading 5 265 Chapter 15: Sustainable Construction 271 Reading 6 293 Glossary 297 References 319 Index 329 v 0000--PPrreelliimmss..iinndddd vv 1100--1111--22001122 1111::3355::5522 LIST OF TABLES AND FIGURES Tables 1.1 The construction industry – broadly defined 1 1.2 Parties traditionally supplying a construction project 11 1.3 The construction industry – narrowly defined 19 1.4 Value of construction output in Great Britain 20 1.5 Sources of international data 21 1.6 A brief guide to official sources of UK statistics 22 1.7 Symbols used to annotate official statistics 23 3.1 Transaction costs which affect construction 48 4.1 Factors affecting demand for owner-occupied housing 59 4.2 Factors affecting demand for privately rented housing 60 4.3 Factors affecting demand for social housing 61 4.4 Factors affecting demand for industrial and commercial buildings 61 4.5 Factors affecting demand for infrastructure and public sector construction 62 4.6 Factors affecting demand for repair and maintenance 63 4.7 Factors affecting the demand for any product 64 5.1 The individual and market supply schedules for a hypothetical three-firm industry 73 5.2 Construction industry supply in Great Britain, 2010 75 5.3 Changing market conditions 83 6.1 Contractors involved in construction 85 6.2 The benefits of partnering 91 7.1 Diminishing returns: a hypothetical case in construction 102 7.2 Typical construction costs 107 7.3 Marginal and average costs 110 7.4 Concentration ratios by industry 119 8.1 An example of bid rigging 133 9.1 The characteristics of green commercial buildings 147 9.2 Examples of green buildings in the UK 148 9.3 Five principles of sustainable housing 150 9.4 Examples of resource productivity 154 9.5 The benefits of modern methods of construction 155 9.6 Internal features to improve productivity 158 10.1 Government policies to address market failures 167 10.2 Market failure and government intervention 174 11.1 Statistical values of human life 190 11.2 Monetary value of global ecosystem services 191 vi 0000--PPrreelliimmss..iinndddd vvii 1100--1111--22001122 1111::3355::5522 11.3 Present values of a future pound (sterling) 195 12.1 UK macroeconomic statistics 204 12.2 Economy forecasts 2012 to 2016 214 12.3 Functions of the Construction Sector Unit 216 13.1 Macroeconomic statistics for selected economies 220 13.2 Measuring aggregate demand in 2010 market prices 229 13.3 The ecological footprint of selected economies 240 14.1 UK inflation rates 246 14.2 Summary of inflation indices 249 15.1 Three interpretations of sustainable development 273 15.2 What makes sustainable development different? 274 15.3 Countries following a sustainable construction agenda 277 15.4 Three interpretations of sustainable construction 279 15.5 Factors that contribute to sustainable construction 281 15.6 Government reports 1998 to 2011 286 Figures 1.1 The trade-off between military goods and civilian goods 4 1.2 Increasing output and the production possibility curve 6 1.3 A complex set of markets for one building project 12 1.4 The circular flow model: a two sector economy 15 1.5 A model for construction economics: a new approach 17 2.1 A spectrum of economic systems 31 2.2 The price mechanism at work 32 2.3 The general principles of a centrally planned economy 35 2.4 New construction output 1955–2010 38 2.5 The trade-off between equity, efficiency and the environment 42 3.1 Product and factor allocation via the pricing mechanism 46 3.2 The axes of a supply and demand graph 49 3.3 A simple supply and demand diagram 50 3.4 The determination of equilibrium price 52 3.5 Changing market conditions lead to a new equilibrium price 54 4.1 A standard market demand curve 57 4.2 Change in a non-price determinant causing a shift in demand 67 4.3 Change in price causing a movement along a given demand curve 68 5.1 The supply curve for an individual firm 72 5.2 A shift of the supply curve 78 5.3 Perfectly inelastic supply 81 5.4 Changing market conditions across three markets 84 6.1 Private finance initiative 90 vii 0000--PPrreelliimmss..iinndddd vviiii 1100--1111--22001122 1111::3355::5522 6.2 Project life cycle 95 7.1 Simplified view of economic and accounting profit 99 7.2a A production function 103 7.2b Diminishing marginal returns 105 7.3a Total costs of production 109 7.3b Average fixed costs, average variable costs, average total costs and the marginal costs of production 109 7.4a Preferable plant size 113 7.4b Deriving the long-run average cost curve 114 7.5 Economies and diseconomies of scale 116 7.6 Economies of scale in the construction sector 117 8.1 The demand curve for an individual firm in a perfectly competitive market 124 8.2 Finding a profit-maximising position 126 8.3 Long-run perfectly competitive equilibrium 128 9.1 Life cycle analysis of buildings and infrastructure 160 10.1 A spectrum of economic goods 171 10.2 Internalising external costs 174 11.1 The environment: beginning and end 179 11.2 The mass balance model 181 11.3 Empty world 183 11.4 Full world 184 11.5 The economic effect of a pollution tax 186 12.1 Government objectives and government policy 210 12.2 Business fluctuations 212 13.1 The circular flow of income, output and expenditure 219 13.2 The circular flow model with injections and leakages 225 13.3 The aggregate supply curve 231 13.4 Three ecological footprint scenarios, 1960 to 2100 242 14.1 Calculating a price index 247 14.2 Construction cost indices 250 14.3 The money market 255 14.4 Adaptive expectations theory 258 14.5 The wage-price spiral 259 14.6 UK house price inflation 261 14.7 A cobweb diagram showing how property prices can fluctuate 262 15.1 Rostow’s stages of economic growth 272 15.2 The three strands of sustainability 275 15.3 A network of construction projects 283 15.4 The circle of blame 284 viii 0000--PPrreelliimmss..iinndddd vviiiiii 1100--1111--22001122 1111::3355::5522 ACKNOWLEDGEMENTS Although the book cover implies this is all my own work, it was not achieved alone. The staff and students that I have worked with have subtly, and not so subtly, made their mark. In particular, research undertaken with Kevin Burnside, a supportive colleague over a number of years, has helped to improve the clarity of the process of bidding for work in a construction industry dragged down by financial crisis and subsequent recession. The fruits of our discussion should be evident in Chapters 7 and 8. Next, to bring life to a manuscript is no easy task and this would have been impossible without the graphic design skills, and patience, of Chris Wade, who has added some new artwork to this edition. A major concern from the outset was to create a text that was easy to read and use. This is some challenge in the subject area, and again it has been a pleasure to be supported by the editing skills of Paul Stirner. His perceptive, informed and detailed line of enquiry has added greater clarity and rigour to the text, making the completed manuscript as accessible as possible. Finally I should acknowledge the support of the publishers, in particular Brian Guerin who co-ordinates the team involved in commissioning a new edition and taking it through to publication, and you would be surprised at the number of departments that involves. I hope you find the finished product interesting and relatively easy to use. If any errors or omissions remain, I apologise for these in advance, and would be grateful for correspondence bringing them to my attention. Enjoy the book! Danny Myers September, 2012 ix 0000--PPrreelliimmss..iinndddd iixx 1100--1111--22001122 1111::3355::5522