How do higher density and better quality of life go together? 3/7

A certain degree of compactness is essential for the viability of 15-minute cities. This is due to the need for an economic threshold for facilities accessible by walking or cycling. A summary of 300 research projects by the OECD shows that compactness increases the efficiency of public services in all respects. But it also reveals disadvantages in terms of health and well-being due to pollution, traffic, and noise. The assumption is that there is an optimal density at which both pleasant living and the presence of everyday facilities - including schools - can be realised. At this point, 'densification' is not at the expense of quality of life but contributes to it. A lower density results in more car use and a higher density will reduce living and green space and the opportunity to create jobs.

The image above is a sketch of the 'Plan Papenvest' in Brussels. The density, 300 dwellings on an area of 1.13 hectares, is ten times that of an average neighbourhood. Urban planners often mention that the density of Dutch cities is much lower than in Paris and Barcelona, for example. Yet it is precisely in these cities that traffic is one of the main causes of air pollution, stress, and health problems. The benefits of compactness combined with a high quality of life can only be realised if the nuisances associated with increasing density are limited. This uncompromisingly means limiting car ownership and use.

Urban planners often seem to argue the other way round. They argue that building in the green areas around cities must be prevented at all costs to protect nature and that there is still enough space for building in the cities. The validity of this view is limited. In the first place, the scarce open space within cities can be better used for clean workshops and nature development in combination with water control. Secondly, much of the 'green' space outside cities is not valuable nature at all. Most of it is used to produce feed for livestock, especially cows. Using a few per cent of this space for housing does not harm nature at all. This housing must be concentrated near public transport. The worst idea is to add a road to the outskirts of every town and village. This will undoubtedly increase the use of cars.

Below you can link to my free downloadable e-book: 25 Building blocks to create better streets, neighborhoods and cities

https://www.dropbox.com/scl/fi/e8ezk57ftn75hk4e9829g/Better-streets-neighbourhoods-and-cities.pdf...

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Herman van den Bosch, professor in management development , posted Apr 22nd

Urbanisation in the US is undergoing major changes. The image of a central city surrounded by sprawling suburbs therefore needs to be updated. The question is what place does the 15-minute city have in it? That is what this somewhat longer post is about

From the 1950s, residents of US cities began moving en masse to the suburbs. A detached house in the green came within reach for the middle and upper classes, and the car made it possible to commute daily to factories and offices. These were initially still located in and around the cities. The government stimulated this development by investing billions in the road network.
From the 1980s, offices also started to move away from the big cities. They moved to attractive locations, often near motorway junctions. Sometimes large shopping and entertainment centres also settled there, and flats were built on a small scale for supporting staff. Garreau called such cities 'edge cities'.
Investors built new suburbs called 'urban villages' in the vicinity of the new office locations, significantly reducing the distance to the offices. This did not reduce congestion on congested highways.

However, more and more younger workers had no desire to live in suburbs. The progressive board of Arlington, near Washington DC, took the decision in the 1980s to develop a total of seven walkable, inclusive, attractive and densely built-up cores in circles of up to 800 metres around metro stations. In each was a wide range of employment, flats, shops and other amenities . In the process, the Rosslyn-Balston Corridor emerged and experienced rapid growth. The population of the seven cores now stands at 71,000 out of a total of 136,000 jobs. 36% of all residents use the metro or bus for commuting, which is unprecedentedly high for the US. The Rosslyn-Balston Corridor is a model for many other medium-sized cities in the US, such as New Rochelle near new York.

Moreover, to meet the desire to live within walking distance of all daily amenities, there is a strong movement to also regenerate the suburbs themselves. This is done by building new centres in the suburbs and densifying part of the suburbs.
The new centres have a wide range of flats, shopping facilities, restaurants and entertainment centres. Dublin Bridge Park, 30 minutes from Columbus (Ohio) is one of many examples.
It is a walkable residential and commercial area and an easily accessible centre for residents from the surrounding suburbs. It is located on the site of a former mall.

Densification of the suburbs is necessary because of the high demand for (affordable) housing, but also to create sufficient support for the new centres.
Space is plentiful. In the suburbs, there are thousands of (semi-)detached houses that are too large for the mostly older couples who occupy them. An obvious solution is to split the houses, make them energy-positive and turn them into two or three starter homes. There are many examples how this can be done in a way that does not affect the identity of the suburbs (image).
New construction in suburbs

This kind of solution is difficult to realise because the municipal authorities concerned are bound by decades-old zoning plans, which prescribe in detail what can be built somewhere. Some of the residents fiercely oppose changing the laws. Especially in California, the NIMBYs (not in my backyard) and the YIMBYs (yes in my backyard) have a stranglehold on each other and housing construction is completely stalled.

But even without changing zoning laws, there are incremental changes. Here and there, for instance, garages, usually intended for two or three cars, are being converted into 'assessor flats' for grandma and grandpa or for children who cannot buy a house of their own. But garden houses are also being added and souterrains constructed. Along the path of gradualness, this adds thousands of housing units, without causing much fuss.

It is also worth noting that small, sometimes sleepy towns seem to be at the beginning of a period of boom. They are particularly popular with millennials. These towns are eminently 'walkable' , the houses are not expensive and there is a wide range of amenities. The distance to the city is long, but you can work well from home and that is increasingly the pattern. The pandemic and the homeworking it has initiated has greatly increased the popularity of this kind of residential location.

All in all, urbanisation in the US can be typified by the creation of giant metropolitan areas, across old municipal boundaries. These areas are a conglomeration of new cities, rivalling the old mostly shrinking and poverty-stricken cities in terms of amenities, and where much of employment is in offices and laboratories. In between are the suburbs, with a growing variety of housing. The aim is to create higher densities around railway stations. Besides the older suburbs, 'urban villages' have emerged in attractive locations. More and more suburbs are getting their own walkable centres, with a wide range of flats and facilities. Green space has been severely restricted by these developments.

According to Christopher Leinberger, professor of real estate and urban analysis at George Washington University, there is no doubt that in the US, walkable, attractive cores with a mixed population and a varied housing supply following the example of the Rosslyn-Ballston corridor are the future. In addition, walkable car-free neighbourhoods, with attractive housing and ample amenities are in high demand in the US. Some of the 'urban villages' are developing as such. The objection is that these are 'walkable islands', rising in an environment that is anything but walkable. So residents always have one or two cars in the car park for when they leave the neighbourhood, as good metro or train connections are scarce. Nor are these kinds of neighbourhoods paragons of a mixed population; rents tend to be well above the already unaffordable average.

The answer of the question in the header therefore is: locally and slowly

AMS Institute, Re-inventing the city (urban innovation) at AMS Institute, posted Apr 16th

Do you want to learn from and network with the best researchers and scientists working to tackle pressing urban challenges?

AMS Institute, is organizing the AMS Scientific Conference from April 23-25 at the Marineterrein, Amsterdam, to address pressing urban challenges. The event is organized in collaboration with the City of Amsterdam.

The conference brings together leading institutions in urban research and innovation, thought leaders, municipalities, researchers, and practitioners to explore innovative solutions for sustainable development in Amsterdam and other global cities.

Keynotes, research workshops, learning tracks, and special sessions will explore the latest papers in the fields of mobility, circularity, energy transition, climate adaptation, urban food systems, digitization, diversity, inclusion, living labs experimentation, and transdisciplinary research.

Attendees can expect to gain valuable insights into cutting-edge research and engage in meaningful discussions with leading experts in their field. You can see the full program and all available sessions here.

This year's theme is 'Blueprints for messy cities? Navigating the interplay of order and messiness'.

The program

Day 1: The good, the bad, and the ugly
Keynotes by Paul Behrens of Leiden University and Elin Andersdotter Fabre of UN-Habitat will be followed by a city panel including climate activist <strong>Hannah Prins</strong>. The first day concludes with a dinner at the Koepelkerk in Amsterdam: you're welcome to join our three-course meal with a 50 euro ticket.

Day 2️: Amazing discoveries
Keynotes by Carlo Ratti of MIT and Sacha Stolp of the Municipality of Amsterdam discuss innovation and research in cities. <strong>Corinne Vigreux</strong>, co-founder of TomTom, and Erik Versnel from Rabobank will participate in the city panel.

Day 3️: We are the city
Keynotes by Paul Chatterton of Leeds University and Victor Neequaye Kotey Deputy Director of the Waste Management Department of the Accra Metropolitan Assembly, Ghana. They discuss how we shape the future of our cities together. This will be followed by a city panel including Ria Braaf-Fränkel of WomenMakeTheCity and prof. dr. Aleid Brouwer of the Rijksuniversiteit Groningen.

To buy tickets: You can secure your conference tickets through our website.
Dinner tickets: On April 23 we’re hosting a dinner at the Koepelkerk in Amsterdam. Tickets for this can be added to your conference pass or bought separately.

Rihards Dzelme, Inclusive Cities & AI / Trained Architect and Urbanist , posted Apr 15th

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