A post-New Urban master plan: Colby Cox’s quest for timeless balance

Convergence, when it comes to the $945 billion spent annually on planning, developing, building and maintaining places for people to live and flourish in the U.S., does not occur by chance.

A scientific fact that – to date – has not run afoul of pseudoscience claims to the contrary: Our homes 100% entwine with our health and well-being outcomes as a lifelong double helix, forming a close, causal, three-dimensional shape of creation, longevity and quality.

Investment professional and residential developer Colby Cox, like many master-planned community visionaries before him – and hopefully many after – plants that factual reality into the soil below and releases it into the air around the places that become his carefully envisioned neighborhoods.

Cox’s community model is a grand vision, quite literally. Regarding his latest Milton, Delaware, master plan, The Granary, the “grand” aspect that guides the specific direction of his design for the 451-acre, 15-year project is his grandparents, their grandparents, and his grandchildren.

In a market filled with noise-driven anxiety and uncertainty, homes and neighborhoods that offer timeless balance, sanctuary, simplicity, and strong connections among people present a compelling case for differentiation and positioning.

It’s specifically how to make those timeless dimensions structural and how to make them pencil financially and sustain themselves economically – what to do and what not to do – that speaking and listening to Colby Cox offers a doorway of insight.

Housing – writ large – and the business and livelihood of making homes and neighborhoods for people from scratch is, many will tell you, equal parts science and art. From deep below the surface of the ground to high, high in the clouds above a new community, that double-helix of home and health outcomes is a constant presence, whether a developer contemplates or intends it or not.

Colby Cox, founder and CEO of Convergence Communities, practices a kind of residential development that makes those factors intentional, and through the years has become a student of and a pioneer of and a skin-in-the-game investor in a kind of neighborhood development that would be the envy of many who call themselves “placemakers.”

For Cox, each new master plan is part learning lab, part canvas and part homage to the acres and natural features, down to the blade of grass and grain of sand, in which the community inhabits.

That intentional homage and that art – including its use of negative space that shapes, shares edges, and defines boundaries with built environments – have become essential operational elements of a Convergence Communities residential development.

Beyond New Urbanism, but not without it

The Granary, now entering its Phase One grand opening in Milton, arrives as both a continuation and a departure.

In many ways, Cox’s work echoes the timeless ideas of Jane Jacobs – her belief that lively places come not from top-down planning, but from the detailed, lived interactions of people, streets, and shared spaces. It also reflects the formal discipline and human-scale design principles promoted by Andrés Duany and the New Urbanist movement: walkability, proximity, and mixed-use development.

But Cox is pushing beyond both.

“This has really been about 25 years trying to crack the code on this,” he says. “The idea is to create a place where people naturally feel that it’s normal to slow down and truly feel part of a community.”

Where New Urbanism focused on physical form—streets, blocks, porches—Cox is attempting to operationalize something less tangible: how people feel, behave, and connect upon arrival.

“Great design… doesn’t create connection and community on its own,” he says. “It helps, but it’s not the key factor.”

A framework built on connection, not just a lot layout

At full buildout, The Granary will feature 1,350 residences, 60,000 square feet of commercial space, approximately 110 acres of protected open space, and 55 acres of parks — a scale that firmly places it among significant master-planned developments.

Its organizing principle, however, is not density or land efficiency.

It is connection.

Cox describes a framework centered on “connection, community, nature, and spirit,” a progression that mirrors his own evolution as a developer – from design, to sustainability, to culture, and ultimately to human experience.

“In this community… I emphasized focusing on the three pillars of connection, community, nature, and spirit,” he says.

That philosophy renders in the real-world in precise, repeatable decisions:

• A five-minute walk structure across neighborhoods
• Homes within two blocks of shared green space
• Distributed, neighborhood-scale amenities
• Quiet “pause points” for reflection and stillness

Equally important are the decisions to exclude conventional features.

“We never do anything like… gates or anything that creates perceptible separation,” Cox says.

And perhaps most tellingly:

“We are not developing the waterfront… The most important thing here is that everyone has access to this.”

For developers trained to maximize lot premiums, that choice signals a different calculus – one that prioritizes shared value over private exclusivity.

Aligning builders, pricing, and long-term intent

Execution at The Granary blends production scale with design control through partnerships with D.R. Horton and DRB Homes, alongside custom and niche product.

Cox’s approach to those relationships reflects the same long-view discipline.

“We offered them a very reasonable price for the lots,” he says. “I knew I could have charged more… but it would just continue to drive the price point higher.”

Instead, the strategy is alignment across time.

“Our mutual goal is to stay partners… everyone is looking at phase one with the same perspective as they are at phase eight.”

For a 10-phase, 15-year development, that alignment is not philosophical, not abstract, nor touchy-feely – it is financial. After all, it’s a business.

The economic reality: cost pressure meets conviction

And Cox is clear-eyed about the macro environment in which The Granary is launching.

“Over the last seven years, we’ve seen more than a 100% increase in development costs,” he says.

Infrastructure costs have more than doubled. Government-related fees alone can add $30,000 to $50,000 per home, increasing the total costs passed directly to buyers to $60,000 to $85,000.

“That’s an insane equation to try to balance,” he says.

And yet, The Granary proceeds—not as a reaction to short-term market conditions, but as a long-term thesis.

“We can’t completely defy the laws of economics,” Cox says, “but we can do a lot of things that… may not make us the most money.”

The buyer: choosing meaning over optimization

Cox is equally explicit about the demand side.

“My hope is that it’s somebody who’s seeking… a more intentional life,” he says.

This is not a community optimized for the transactional buyer.

“There are a hundred options out there… if all they care about is the best price per square foot,” he says.

Instead, The Granary is aimed at households willing to trade pure economic efficiency for:

• connection to place
• participation in community
• a sense of belonging and contribution

At the same time, Cox is attempting to maintain some accessibility through a variety of product types and internally developed offerings that may not fit conventional builder models.

A generational horizon as a business strategy

If there is a single throughline that defines Cox’s approach, it is time.

Not quarter to quarter. Not phase to phase.

But generation to generation.

“In 150 years, hopefully, they still look good,” he says. “My grandchildren can visit that place and be like, ‘Wow, granddad developed this project. This is pretty cool.’”

That forward-looking sentiment is not abstract for Cox. It is rooted in a deeply personal, backward-looking reality.

He is a fourth-generation Miltonian, developing land that has been in his family for decades—ground tied to a lineage that includes a great-grandfather who built a regional canning enterprise and a grandfather who expanded it into a vertically integrated agricultural operation.

In that context, The Granary is not simply a new master-planned community. It is a continuation of a family presence on the land—one that has already moved through cycles of use, obsolescence, reinvention, and return.

That continuity sharpens the stakes of every decision.

Where many developers underwrite to a hold period or exit horizon, Cox is working within a timeline that stretches both backward and forward – one that connects inherited stewardship with future accountability.

The result is a development philosophy that treats land less as inventory and more as legacy – less as a financial instrument and more as a long-duration asset whose value is measured not only in returns, but in relevance.

“I’ve worked on projects driven purely by economics… that was a disaster,” Cox says.

Today, profit remains necessary—but not primary.

“To survive, we need to generate a profit. But profit is not the primary reason for choosing a project.”

A test case for what comes next

For homebuilding leaders, The Granary amounts to potentially more than a new community launch.

Rather, it’s a proof case in positioning, differentiation, and evolving value in a world whose steady state is full of static, warp-speed change and no end of reasons to feel on edge.

Can a development model rooted in connection, nature, and long-term value compete in a market defined by:

• rising costs
• capital constraints
• volatile consumer confidence

Can principles whose ideas and project models trace back to Jane Jacobs and Andrés Duany be extended to address not just how communities are built, but how they are felt and how they are lived?

And perhaps most critically:

Can a values-driven approach to development – one that deliberately sacrifices certain near-term economic advantages – still deliver durable financial performance?

Cox is placing a long-duration bet that the answer is yes.

The Granary will evolve in its double helix of home and health as a use case for how far that conviction can carry.