Cities: jobs in the centre, most people on the outer

It's remarkable how few new ideas most economists get. They look at the world the way they always have and worry about the same things they've always worried about, chasing the same rabbits down the same burrows.

They analyse the world using their standard model and see those things the model is designed to highlight, but don't see anything that's outside its scope.

What most economists rarely think about is the spatial dimension of the economy. It's ignored by their model, so it's ignored by them. Could it have something to tell us about why the economy isn't functioning as well as it could? Who knows?

Jane-Frances Kelly and Paul Donegan, that's who. They've been studying the economics of our cities for the Grattan Institute, and their eye-opening findings are explained in their new book, City Limits: Why Australia's cities are broken and how we can fix them. Here's my version of their message.

Despite our self-image as sun-bronzed sons and daughters of the soil, we are a nation of city-dwellers. Australia is one of the most urbanised countries in the world.

Our capital cities are growing and most of our income is being generated in them, notwithstanding the big expansion in mining, which is more about additional structures and capital equipment than workers.

For at least the past 40 years, all the net increase in employment has been in the services sector, and the services sector exists mainly in cities. The arrival of the knowledge economy will only heighten this trend.

Most of the economic action in our capitals is occurring near the centre of the city. Just the Sydney and Melbourne central business districts – occupying a combined area of a mere 10 square kilometres - account for about a quarter of each city's production.

Businesses crowd into the CBD because it gives them the easiest access to desirable employees and because they benefit from being close to the other firms in their industry and their suppliers. It facilitates the transfer of knowledge. Get it? They think that crowding together increases their productivity.

The biggest trend in city property prices is not just big rises over time, but the way inner-city prices are rising so much faster than outer-city prices as people seek "proximity" – closeness to the centre, with all its facilities and jobs.

Researchers at the Reserve Bank have shown that if you draw a graph with home prices on the vertical axis and distance from the CBD on the horizontal axis and then plot actual prices, you get an almost perfectly downward-sloping curve for Sydney, Melbourne, Perth or Brisbane. On average, prices are highest close in and lowest far out.

For the five mainland state capitals, 60 per cent of all the employment growth over the five years to 2011 occurred within 10 kilometres of the centre. But here's the problem: no doubt because inner-city house prices were so high, about 55 per cent of the population growth occurred 20 kilometres or more from the centre.

In other words, we've been developing a big economic and social problem few economists have noticed: a growing spatial divide between where the jobs are and where people live.

It's an economic problem because it increases the economy-wide costs of each day's production of goods and services. It's a social problem because, for the most part, those costs fall on the less-wealthy working families living in outer suburbs. Some of the costs come as dollars paid, some as time wasted and some as opportunities forgone.

The growing distance between where we live and where we work means car travel in peak periods is getting slower in all capital cities. Traffic is slowest on inner-suburban roads, because that's where most people are travelling to or from.

Over the past decade, the proportion of people spending more than 10 hours a week commuting has increased by about half. One in four full-time employees spends more time commuting than with their children.

Women caring for children in outer suburbs face tough choices, with a lack of accessible jobs forcing some out of the workforce altogether.

So what can we do about it? We need to reduce congestion and make it easier, quicker and cheaper to move across the city. To me that means improving access to public transport – which is excellent in the inner-city and woeful in the outer suburbs – not returning to our earlier delusion that building more expressways will fix it.

One day we'll have the courage to use time-of-use tolling to encourage those who have the flexibility to avoid travelling in peak periods to stop doing so.

But improving public transport is expensive and can be only part of the solution. The authors stress the need to increase the supply of semi-detached homes – terraces, townhouses and low-rise blocks of flats – in inner and middle suburbs.

This would require changes to complex planning and zoning regulations – and a lot of public consultation if the changes are to stick. But if so many people want to live closer in, we need to accommodate their wishes.

With the release of another intergenerational report this week, we'll be hearing much agonising by politicians and economists about why our productive efficiency isn't improving fast enough. But don't hold your breath waiting for them to acknowledge that a fair part of their problem is spatial.

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How the econocrats can lift their game

When we judge the performance of chief executives, most of us know the boss who's good at cutting costs isn't worth as much as the boss who's also able to improve the outfit's products and processes. Well, the same goes for treasurers and finance ministers - and their econocrats.

It seems the fiscal managers are running low on good ideas. But not to worry - the former Treasury and prime ministerial adviser Dr Ric Simes, now of Deloitte Access Economics, had some useful advice to offer in a speech to the Australian Business Economists last week.

Simes argues governments themselves have an important role to play in achieving the improved productivity performance the econocrats keep saying we need. Especially when "productivity" is better thought of as "technological progress" and the figures for measured productivity aren't as important as actual improvements in welfare.

"For those parts of the economy where market forces are paramount, government's main role is to make sure that regulation or its own actions allow competition to unfold without unwarranted intervention," Simes says.

To me, this means econocrats should urge their masters to tread carefully when powerful business interests, fighting to shore up a technologically superseded business model, demand that governments make breaches of government-granted copyright a hanging offence.

As Simes says, digital technologies have lower entry barriers and are forcing businesses to be both more productive and more responsive to consumers. So don't help incumbents resist change.

But, he says, the potential for technology to make some of the largest improvements in Australian lives lies in government-heavy sectors including health, education and transport. In these areas, progress has been too gradual.

"The exemplar is probably electronic health records, which have been the focus of considerable effort for perhaps 15 years now, but where we still seem to be a long way off the goal of having them routinely used throughout the health system.

"Or, take even an example where we have done well, the SCATS - Sydney Co-ordinated Adaptive Traffic System - for control of traffic lights. SCATS was originally developed 40 years ago, it has been constantly refined since then and is now in use in 27 countries.

"So, a success story - yet, as a Sydney driver, I know my welfare would be improved with a more refined SCATS system. It's coming - NICTA [the National Information Communications Technology Research Centre of Excellence] and others are working on optical-based monitoring and improved optimisation algorithms - but more support for both the research and especially its deployment would lift my welfare!"

Simes notes that in both cases, electronic health records and SCATS, the strict efficiency improvements from the technology - the bit that would help government budgets - represent a relatively small part of the overall benefits to the community.

"Especially in health and education, many of the benefits will involve improvements in the quality and range of services rather than efficiency gains," he says.

"Making the most effective use of digital technologies in health and education - as well as other areas where government has a direct role, such as smart technologies in transport and utilities - will deliver much larger economic and social benefits than where we seem to like to focus much of our policy attention, such as whether we should get the budget back into balance by 2017 or 2019."

Another potentially major area of micro-economic reform, Simes says, is how we organise our cities. Up to 80 per cent of Australia's output and employment occurs within its major cities. This has happened in the pursuit of economies of agglomeration.

"Yet we know that the problems are mounting. Congestion, compromised open spaces, the loss of amenity all risk detracting more and more from those benefits."

As with digital, many of the benefits from fixing these problems would not show up in our standard measures of welfare derived from the national accounts.

"Ten minutes less travelling time to work, or to school, doesn't have direct effects on gross domestic product. A more vibrant space around the harbour, or convenient shopping centre in the 'burbs, doesn't get picked up. But social welfare is clearly affected," he says.

Taking Sydney as an example, if commuter travel times on its roads were reduced by five minutes per trip, the benefits would amount to $3.6 billion a year, if an individual's time is valued at average weekly earnings.

To this you could add savings for freight or commercial vehicles. And savings for going to the shops, or school, or to the beach.

Echoing the patron saint of treasurers, Simes wants to lift our gaze to "the big picture".

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Economists should learn some geography

One of the great failings of economists is their confident assumption that their way of looking at the economy is the only way - certainly, the only useful way - of understanding it.

For one thing, their almost exclusive focus on money - prices, actually - and their convenient assumption that people are rational, allows them to analyse an economy populated by automatons rather than fallible, flighty humans.

Behavioural economics and economic sociology attempt to correct this deficiency.

But there's another way of studying the economy that most economists take little interest in, to the detriment of their understanding of how the economy ticks: its spatial dimension. This failure is getting more costly as we move to a knowledge economy.

Why isn't economic activity spread pretty much evenly across our vast continent? Why is almost all of it concentrated around our coastline?

For most of our states, up to three-quarters of their economic activity is concentrated in their capital city, which is also the state's first site of white settlement. This is partly an accident of history. Newcomers tend to settle where other people are already settled.

But economic geographers have long known there's also a lot of economic logic to where people settle. Farmers tend to settle where the most arable land is. Mines have to be built where the minerals are.

Manufacturers have to decide whether to build their factories close to where their raw materials are or close to where their customers are. They usually decide to set up in cities, often on the outskirts of cities where land is cheaper.

What's more, many of the firms in a particular industry will gravitate to the same city, usually a big one. Why? So as to exploit "economies of agglomeration".

You've heard of economies of scale. Economies arise when similar firms agglomerate (cluster together). Workers with skills relevant to that industry are attracted to that city, meaning firms have less trouble getting the skilled workers they need. Workers who lose their jobs at one firm may not need to move house to get another job at a similar firm.

Likewise, the manufacturers and their suppliers of specialist equipment and materials each benefit by being close to each other. Firms in the same business can keep an eye on each other, copying anyone who gets on to a better way of doing things. That way, the whole industry gets more efficient at a faster rate.

All this has long been understood by economic geographers. But the advent of the knowledge economy has given agglomeration economies a major new twist and added to the economic significance of big cities, as the report, Mapping Australia's Economy: cities as engines of prosperity, by Jane-Frances Kelly and Paul Donegan, of the Grattan Institute, has pointed out.

"Today the Australian economy is no longer driven by what we make - the extraction and production of physical goods - but rather by what we know and do. Like other advanced economies around the world, our economy is continuing to become more knowledge-intensive, more specialised and more globally connected," the report says.

"Knowledge-intensive businesses - which are the most productive today - tend to cluster and thrive in the centres of large cities."

It turns out economic activity in Australia is concentrated in and around large cities, but is not distributed evenly within cities. Central business districts and inner-city areas are especially important: they represent substantial concentrations of employment, but even more intense concentrations of economic activity. In other words, CBD workers have a lot higher productivity than other workers.

The report explains that "the more highly skilled and specialised a job, the greater the need to find the best person to fill it. This is especially important when the work involves knowledge, expertise, judgment and learning".

Being close to suppliers, customers and rivals helps businesses generate new business opportunities and ideas for products and services, and better ways of working. These transfers of expertise, new ideas and process improvements that occur through interactions between businesses are called "knowledge spillovers" (a class of "positive externality").

Within cities, CBDs and inner-city areas offer the most opportunities for face-to-face contact among workers, essential to benefiting from knowledge spillovers. Spillovers often involve combining and recombining knowledge to come up with new products and ways of working.

Workers build on each other's thoughts, jointly solve problems and break through impasses. Trust is essential, and these kinds of complex conversations are best had in person.

"High-speed broadband and other advances in communication technologies will never replace the importance of face-to-face contact," we're told.

Grattan's research finds that residential patterns and transport systems mean CBD employers have access to only a limited proportion of workers in metropolitan areas. Turning that around, many workers, particularly in outer suburbs, have access to only a small proportion of jobs across the city.

For instance, in some outer suburban growth areas of Melbourne, just 10 per cent of the city's jobs can be reached within a 45-minute drive. If work journeys are made by public transport it's worse.

The report warns that, unless governments lift their game, "Australian cities are likely to continue to spread outwards, further increasing the distance between where many people live and the most productive parts of large cities". This would harm productivity - and workers' opportunity to get ahead.

The point is, governments need to understand the economy's spatial dimension and respond by ensuring transport networks better connect employees with employers, and businesses with their customers and suppliers. Continue letting congestion worsen and you cause productivity to be lower than otherwise, not to mention adding misery to people's lives.

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Big cities have become the engine of the economy

Old notions die hard. If you took all the production of goods and services in Australia and plotted on a map where that production took place, what would it look like?

Any farmer could tell you most of the value is created in the bush. A miner, however, would tell you - a bunch of ads have told you - these days most of the wealth is generated in areas such as the Pilbara in Western Australia and the Bowen Basin in Queensland.

Then, of course, there are the great manufacturing states of Victoria and South Australia - with most work done in the suburbs of Melbourne and Adelaide, but also regional cities such as Geelong.

That make any sense to you? It's completely off beam.

A report issued this week by the Grattan Institute finds that, these days, 80 per cent of the dollar value of all goods and services in Australia is produced on just 0.2 per cent of the nation's land mass. Just about all of that is in our big cities, as close in as possible.

The report, by Jane-Frances Kelly and Paul Donegan, finds that big cities are now the engines of our prosperity. If you take just the central business districts of Sydney and Melbourne - covering a mere 7.1 square kilometres - you have accounted for almost 10 per of Australia's gross domestic product.

What do workers do in all those city offices? Nothing you can touch. That's how much the economy's changed.

To find the economy as many people still imagine it to be, you have to go back 50, even 100 years. About 100 years ago, almost half Australia's population of 4 million lived on rural properties or in small towns of fewer than 3000 people.

Many of these would have been market towns serving the agricultural economy. Agriculture and mining accounted for a third of the workforce. And only about one in three Australians lived in a city of at least 100,000 people.

These days, agriculture employs only 3 per cent of workers and contributes only 2 per cent of GDP. Our two biggest CBDs contribute at least four times that much.

By the end of World War II, manufacturing had become Australia's dominant industry. At its height in 1960, the report reminds us, manufacturing employed more than a quarter of the workforce and accounted for almost 30 per cent of GDP.

The rise of manufacturing shifted much of our economic activity - our prosperity - to the big cities, but mainly to the suburbs. Suburbs away from city centres had lower rents and less congestion.

Postwar growth in car ownership made possible the shift to a manufacturing economy with a strong suburban presence. It also led to the demise of many small towns and the rise of regional centres.

Today, however, manufacturing employs only 9 per cent of the workforce and accounts for just 7 per cent of GDP. The thing to note is that this seeming decline in manufacturing has involved only a small and quite recent fall in the quantity of things we manufacture in Oz.

Similarly, the decline in agriculture's share of employment and GDP has occurred even though the quantity of rural production is higher than ever. The trick is that these industries didn't contract so much as other parts of the economy grew a lot faster, shrinking their share of the total.

One of those other parts is mining, of course. But get this: "While Australia's natural resource deposits are typically in remote areas, workers in cities make a critical contribution to the industry's success," the report says.

"For instance, in Western Australia, where the most productive mining regions are located, more than one third of people employed in mining work in Perth."

That's partly because of fly-in fly-out, but mainly because many of these workers are highly skilled engineers, scientists, production managers, accountants and administrators.

So what explains the greater and still-growing economic significance of big cities, so that Sydney, Melbourne, Brisbane and Perth now contribute 61 per cent of GDP? The rise of the knowledge economy.

Increasingly, our prosperity rests not on growing, digging up or making things, but on knowing things. Our workforce is more highly educated than ever, and this is the result.

"Knowledge-intensive jobs are vital to the modern economy. They drive innovation and productivity, and are a critical source of employment growth. In the last 15 years there has been much higher growth in high-skilled, compared to low-skilled, employment," the report says.

Knowledge-intensive activities aren't confined to jobs in the services sector, but are also increasing in mining and manufacturing. They often involve coming up with new ideas, solving complex problems or finding better ways of doing things.

But here's the trick: it suits many of the knowledge workers, and the businesses that employ them, for those workers to be crowded into big cities, as close in as possible. When you're all packed in together, there's more scope for the transfers of expertise, new ideas and process improvements known as "knowledge spillovers".

Such spillovers come particularly through face-to-face contact. Large cities offer employers knowledge spillovers and a large skilled workforce. They also offer people greater opportunities to get a job, move to a better job, build skills and bounce back if they lose their job.

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Why most of us live in big cities

We live in the age of the city. A year or two ago we passed the point where half the world's population was now living in urban areas. This is because the rapid economic development of many large but poor countries is as much about urbanisation as industrialisation. Now experts are predicting the proportion of us living in cities will rise to 70 per cent within the next 40 years.

This isn't happening by accident. People migrate from the country to the city in the confident belief - invariably more right than wrong - this will raise their standard of living.

Putting it another way, there are huge economic advantages if most of us live in big cities, packed together like sardines. Economists call these the "economies of agglomeration".

When businesses are located close to their customers, suppliers and potential employees, they can produce their goods and services at less cost. When a number of businesses in the same industry are located in the same city there are further savings.

That's the economists' conventional explanation of why we pile into cities.

More recently, Professor Edward Glaeser, of Harvard, has argued that cities - and the face-to-face contact they make possible - are the ideal bed for germinating and propagating the ideas that drive the information economy.

So, much of the rich world's affluence is owed to our penchant for crowding together. And when politicians and economists turn their mind to cities their concern is usually to ensure the economic benefits keep rolling in.

But what about the social, psychological side? Do we pay a high social or mental price for so much unnatural crowding? As a general proposition, I'm not sure we do. Most city slickers enjoy living in cities, surrounded by so many people and so much choice.

Even so, we're engaged in a tricky balancing act, enjoying the benefits of having so many around us while retaining some personal space and privacy. In the country everyone looks after each other - or so we like to think - but in the city we tend to mind our own business.

When we get this balance wrong, city living becomes more impersonal and less satisfying than it should be. In the extreme case, there can be so much keeping-yourself-to-yourself that individuals feel lonely and isolated in the midst of the crowd.

Do economists ever worry about this sort of thing? No, not their department. Do politicians? Since they're so preoccupied with matters economic, probably not as much as they should.

These issues are explored in a new report from the Grattan Institute, Social Cities, by Jane-Frances Kelly and others. Let me summarise its findings.

It finds that social connection - our relationships with others - is critical to our wellbeing. Humans are social animals. We evolved in an environment where group membership was essential to survival, so now it's built into our brains.

We form connections at three levels: intimate personal and family relationships, links with a broader network of friends, relatives and colleagues, and collective connection - our feeling of belonging in our communities.

Social connection is important to our health as well as our happiness. Loneliness can be as bad for our health as high blood pressure, lack of exercise, obesity or smoking. Australian research shows that older people with stronger networks of friends live longer.

"The importance of social connection to health and wellbeing means that, for many people, improved relationships are a much more realistic path to a better life than increased income," the report says.

The few internationally comparable statistics relating to social connection suggest Australia is doing well. On the proportion of people who have relatives or friends they can count on in a time of need, we rank sixth out of 41 mainly developed countries. On the proportion of people who feel most other people can be trusted, we rank fifth.

Even so, our degree of social connection is declining. Our average number of friends has fallen in the past 20 years, as has the number of local people we can ask for small favours. And social connection is unevenly distributed. People on lower incomes and people with disabilities have lower trust in others.

One-person households account for a quarter of all households and are the fastest-growing type. You're not lonely just because you live alone, but the risk of it is a lot higher. Being a single parent is a risk factor, as is having limited English.

The report stresses it doesn't believe in physical determinism - that design is destiny. Even so, "the shape of our cities can make it easier, or harder, for people to interact'.

"Where we live, work and meet, and how we travel between these places, has a big impact on how much time we have to connect, and who we can meet face-to-face," it says.

Social connection is becoming more widely recognised as an important goal in the design of streets and the architecture of buildings. But when major decisions about transport infrastructure and land use are made, social connection is rarely given the same priority as the movement of people and goods for employment and commerce.

Inefficient urban transport networks see much of our day swallowed up by commuting, leaving us less time for friends and family. It's simpler for people to get together to play sport if training grounds are available nearby, and it's easier to organise a picnic if you can walk to a local park.

"If our cities are to absorb larger populations and improve quality of life for all, they will need to meet our social as well as our material needs," the report concludes.

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