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10 Smart, Sustainable Future Cities

Proposed legislation: The American Future Cities and Regional Renewal Act (bill text coming soon)

10 Smart, Sustainable Future Cities: A Cost-Benefit and Investment Analysis

The United States has not built a genuinely new city of consequence in more than a century. Our metropolitan growth happens at the edges — suburb stacked on suburb, exurb sprawling into farmland — replicating the same car-dependent, infrastructure-hungry pattern that locks residents into long commutes, high energy bills, and rising housing costs. Meanwhile, the country faces a documented housing shortage of several million units, a climate imperative to decarbonize the built environment, and entire regions hollowed out by the loss of industry. The proposal examined here asks a direct question: if we are going to build housing and infrastructure for tens of millions of new residents over the coming decades anyway, what would it cost — and what would we gain — by building better from the ground up?

The vision is ten purpose-built communities, each designed for roughly 100,000 to 250,000 residents, powered substantially by clean energy, organized around walkability and high-quality transit rather than the automobile, and integrated with advanced food, water, and digital systems. These would not be gated enclaves for the wealthy. The design brief centers equity, mixed-income housing, and public ownership of the land value created — the explicit goal being to demonstrate, at scale, that a more affordable, lower-carbon, higher-quality American urbanism is buildable. This page assesses the proposal honestly: what gets built, what it costs, the realistic economic and jobs benefits, and the very real risks that the international record on "build-from-scratch" cities demands we confront.

What Gets Built

Each of the ten cities is conceived as a complete community rather than a subdivision. The core physical program includes:

It is worth being precise about vertical farming, which is often oversold. Peer-reviewed work (for example, sustainability modeling published in MDPI journals in 2025) finds leading facilities targeting roughly 150 kWh of electricity per kilogram of leafy greens, with newer adaptive systems cutting climate-control energy by around 22 percent. Vertical farms are energy-intensive and today competitive mainly for high-value leafy greens, not staple grains. In these cities they should be understood as one tool for fresh-produce resilience, not a replacement for conventional agriculture.

Cost Breakdown

The site's stated figure is $150–200 billion, best understood as a multi-year federal capital commitment to seed and de-risk the program rather than the total all-in cost of fully completed cities. Building cities is expensive, and the international benchmarks are sobering.

Songdo, South Korea — the most-cited modern build-from-scratch "smart city" — has absorbed more than $40 billion across its development, according to reporting compiled in coverage of global smart-city projects. Saudi Arabia's NEOM is the cautionary extreme: originally budgeted at $500 billion, internal audits and 2025–2026 reporting (CNBC, Euronews, Gulf News) describe costs that ballooned dramatically, a workforce cut by roughly 35 percent since April 2025, an $8 billion writedown by the Saudi sovereign wealth fund, and "The Line" scaled back from a 170-kilometer plan to roughly 2.4 kilometers expected by 2030. NEOM is a monument to what happens when ambition outruns discipline.

A disciplined American program would look nothing like NEOM. A realistic per-city capital cost — land, trunk infrastructure (water, sewer, grid, transit spine), and public buildings, with most housing built by private and nonprofit developers on serviced land — might run in the low tens of billions over a decade-plus. Ten cities therefore imply a total program cost well above the headline figure if measured to full build-out. The $150–200 billion is most credibly framed as the federal share over roughly a decade: acquiring and servicing land, building the transit and energy backbone, and providing the patient capital that crowds in private investment for the buildings themselves. Land-value capture — the public retaining or recovering the appreciation that infrastructure creates — is central to the financing logic and is what could make the program partially self-funding over time.

Global context helps calibrate ambition: IDC and related industry figures cited in smart-city market reporting put worldwide smart-city technology spending around $130 billion in 2023, rising toward $200 billion by 2025. The U.S. program would be a significant but not unprecedented commitment within that global flow of capital.

Economic Benefits

The economic case rests on three pillars. First, housing supply. The single largest driver of the U.S. affordability crisis is that we do not build enough homes where people want to live. Adding one to two million units of well-located, transit-served housing would put direct downward pressure on rents and prices, and the value of that affordability compounds over decades.

Second, construction and operating activity. Infrastructure investment is among the more reliably stimulative forms of public spending. The Economic Policy Institute and others use an output multiplier of roughly 1.6 for infrastructure, and analyses summarized by the Federal Highway Administration and the Council of Economic Advisers suggest that on the order of tens of thousands of job-years are supported per $1 billion of infrastructure investment, with most estimates clustering around the idea that $100 billion supports roughly one million full-time-equivalent job-years. A $150–200 billion program, spent over a decade and leveraging far larger private investment in buildings, would support a sustained construction and supply-chain workforce numbering in the hundreds of thousands.

Third, agglomeration and productivity. Cities are economic engines because density and connection raise productivity. Purpose-built communities anchored by a university, a research institution, a port, or a clean-manufacturing cluster could become regional growth poles — a deliberate counterweight to the concentration of opportunity in a handful of expensive coastal metros.

Jobs

The jobs profile spans the full arc of development. In the build phase: site work, utilities, transit construction, vertical-construction trades, and the manufacturing of solar, storage, transit vehicles, and building components — much of it eligible to be sourced domestically. In the operating phase: transit operations, utility and facilities management, healthcare and education staff for the new schools and clinics, and the ordinary economy of any functioning city. The honest caveat, well documented in EPI and Richmond Fed analyses, is that there is no single jobs multiplier; rising materials and labor costs erode the jobs-per-dollar figure over time, and public construction can pull workers from other projects rather than purely adding net employment when labor markets are tight.

Social and Environmental Benefits

The environmental logic is straightforward. Buildings and transportation are the two largest sources of U.S. greenhouse emissions, and both are determined largely at the moment of construction and street layout. An all-electric, transit-oriented, renewable-powered city locks in low emissions for a century. Compact, walkable urban form is also measurably greener per capita: research on 15-minute-city design (including a 2024 arXiv analysis of compact cities) finds lower transport energy and emissions where daily needs are reachable without a car.

The social dividend is equity by design: mixed-income housing prevents the segregation that retrofits struggle to undo; co-locating clinics, schools, and transit means lower-income residents are not stranded; and public capture of land value can fund ongoing affordability rather than handing windfalls to early speculators.

Administrative and Implementation Considerations

This is where the proposal lives or dies. A new federal entity — call it a Future Cities Authority — would need a narrow, disciplined mandate: assemble land (ideally on or near existing infrastructure, transit, and water, not in greenfield isolation), set design standards, build the public backbone, and then partner with states, municipalities, and private and nonprofit developers to deliver the buildings. The governance lesson from NEOM's audit, which reportedly found "deliberate manipulation" of finances and reliance on unrealistic assumptions, is that transparency, independent cost review, and the willingness to descope early are not optional.

Three implementation principles should be non-negotiable. Site selection near existing assets — the Harvard Business School working-knowledge literature on smart cities stresses that the cheapest infrastructure is the kind you don't have to build twice; locating near existing rail, water, and grid dramatically lowers cost and risk. Phasing: build a viable first neighborhood, prove it works, then expand — rather than committing to a finished metropolis on paper. Local governance from the start, so residents are citizens, not tenants of a corporate experiment. The technology should serve livability, not become the point; Yale Environment 360's reporting on why the "smart city" luster has faded is largely a story of projects that prioritized sensors over people.

International Comparisons and Precedent

The record is genuinely mixed, and a fair analysis must say so. Songdo delivered a functioning, livable city but at very high cost and with a reputation for feeling somewhat sterile and under-occupied in its early years. India's Smart Cities Mission — over $30 billion across 100 cities — pursued the more pragmatic path of upgrading existing cities rather than building new ones, and offers lessons in both ambition and uneven execution. NEOM stands as the dominant cautionary tale of the decade.

But there are also successes outside the "smart city" branding. Planned communities and new towns — from postwar European new towns to well-executed transit-oriented districts like parts of Stockholm and Copenhagen, and large mixed-use developments such as Miami's $3 billion Little River District (over 5,700 affordable and workforce units) — show that integrated, transit-served, mixed-income development works when it is grounded in real demand and real infrastructure. The American program should explicitly model itself on the disciplined, demand-driven examples and treat NEOM as the anti-pattern.

Comparison to the Status Quo and Alternatives

The status quo is not free. We are already building millions of homes — overwhelmingly as car-dependent sprawl that imposes long-run costs in infrastructure maintenance, congestion, emissions, and lost time. The relevant comparison is not "new cities versus nothing" but "new cities versus more sprawl."

The strongest alternative is to invest the same money into existing cities: reform zoning to allow density, upgrade transit, and subsidize infill and affordable housing where people already live. This is almost certainly the higher-return, lower-risk path for most of the money, because it builds on existing infrastructure and avoids the staggering failure rate of from-scratch megaprojects. A serious version of this proposal should therefore be modest in scale and explicitly experimental: perhaps two or three flagship cities rather than ten at once, with the larger share of housing investment flowing to reform and infill in existing metros. The new cities earn their place as demonstration projects — proving a replicable model of affordable, low-carbon urbanism — not as the primary housing solution.

Risks, Trade-offs, and Counterarguments

The objections are strong and deserve a direct hearing.

Megaprojects fail at high rates. NEOM, and to a lesser extent Songdo, show how costs spiral and visions shrink. Critics are right that governments are poor at building cities to schedule and budget.

"If you build it, they may not come." Cities grow because of jobs and demand, not master plans. A city built ahead of demand risks becoming a half-empty showpiece. This is the deepest risk, and it argues for siting near existing economic anchors and phasing tightly.

Opportunity cost. Every dollar spent assembling greenfield land is a dollar not spent fixing the housing crisis in places people already want to live, where zoning reform might unlock far more units per dollar.

"Smart" can mean surveillance. Sensor-saturated cities raise legitimate privacy concerns; governance and data rules must be settled before the first sensor is installed.

Top-down planning can fail communities. The best neighborhoods evolve; over-designed ones can feel lifeless. The program must leave room for organic growth and resident control.

A fair conclusion is that the maximalist version — ten finished cities for $150–200 billion — is unrealistic, and the honest framing is a seeded, phased demonstration program whose primary value is proving a model, with the bulk of the housing fight still won or lost in existing cities.

Conclusion

The case for building new American cities is, at its best, a case for raising our ambitions about what ordinary life can look like: homes people can afford, streets people can walk, clean air and clean power, and opportunity spread beyond a few overheated metros. The case against is grounded in a sober reading of how often such projects fail. Both are true. The defensible policy is not to choose between them but to sequence them: pair aggressive reform and investment in existing cities with a small number of disciplined, demand-anchored, transparently governed new communities that demonstrate what is possible. Treated that way — as a $150–200 billion catalytic investment in a replicable model rather than a blank check for ten instant metropolises — the proposal is ambitious, defensible, and worth piloting. Treated as NEOM, it would be a costly monument to hubris. The difference lies entirely in the discipline of execution.

Sources

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