A Framework for Democratic Infrastructure Funding in Intentional Communities and New City Developments

Introduction

Intentional communities, planned developments, and new city projects share a common challenge: how do you fairly decide which shared infrastructure to build, and how do you pay for it? Whether the community is an off-grid village, a master-planned suburb, or an entirely new municipality, residents have competing priorities and limited collective funds.

Traditional governance models, whether majority-rule voting in a homeowners association (HOA) or top-down allocation by a management company, often fail to capture what residents actually care about most. A small group with intense preferences can be overruled by an indifferent majority, or a vocal minority can dominate proceedings. The question how much someone cares about an issue is invisible in a one-person-one-vote system.

This article introduces two powerful mechanisms from the field of mechanism design: quadratic voting and quadratic finance (also called quadratic funding). It explores how they can be applied within community developments to fund infrastructure, maintain shared resources, and produce governance outcomes that genuinely reflect resident preferences.

Part 1: Quadratic Voting

What Is Quadratic Voting?

Quadratic voting (QV) is a collective decision-making mechanism originally developed by economist E. Glen Weyl and further refined in collaboration with legal scholar Eric Posner. The core idea is elegantly simple: instead of giving every person one vote per issue, each participant receives a budget of voice credits that they can allocate across multiple issues. The catch is that the cost of casting votes on any single issue rises quadratically.

In concrete terms: casting 1 vote on an issue costs 1 voice credit, but casting 2 votes costs 4 credits, 3 votes costs 9 credits, 4 votes costs 16 credits, and so on. The formula is: cost = (number of votes)². This means that expressing a moderate preference is cheap, but expressing an intense preference is expensive.

Why Quadratic? The Logic Behind the Curve

Traditional one-person-one-vote systems treat all preferences equally. Whether you mildly prefer option A or desperately need option A, your vote carries the same weight. This leads to well-known problems:

• Tyranny of the majority: A large group with a mild preference can overrule a smaller group for whom the issue is critically important.
• Strategic voting: People vote not for what they truly want, but for what they think has the best chance of winning.
• Logrolling: Voters trade favors informally (“I’ll vote for your road if you vote for my playground”), leading to opaque and potentially corrupt bargaining.

Quadratic voting solves these problems by making the cost of influence proportional to the strength of one’s preference. If you care deeply about a community garden, you can concentrate your voice credits there, but at the cost of having less say on issues you care about less. The quadratic cost curve is mathematically optimal because it balances between a linear system (where the wealthy could simply buy outcomes) and a flat system (where intensity of preference is invisible).

A Simple Example

Imagine a community HOA meeting where residents are deciding among three infrastructure proposals:

1. Project A: Build a community water purification and storage system
2. Project B: Construct a community greenhouse and aquaponics system
3. Project C: Improve road drainage and paving

Each resident receives 100 voice credits. Here is how three different residents might allocate their credits:

Notice what happened: James cares enormously about road drainage (perhaps his lot floods every rainy season), so he concentrated 81 of his 100 credits there, gaining 9 votes. Maria spread her credits more evenly because she cares moderately about all three projects. Aisha prioritized the greenhouse. The result reflects the aggregate intensity of community preferences, not just a head count.

Part 2: Quadratic Finance (Quadratic Funding)

What Is Quadratic Finance?

Quadratic finance, also known as quadratic funding (QF), extends the principles of quadratic voting from decision-making into the realm of funding. It was proposed by Vitalik Buterin, Zoë Hitzig, and E. Glen Weyl in their 2018 paper on Liberal Radicalism. The mechanism is designed to optimally fund public goods, things that benefit everyone but that individuals tend to underinvest in because they can free-ride on others’ contributions.

The formula works as follows: the funding a project receives equals the square of the sum of the square roots of individual contributions. Mathematically: Funding = (∑ √cᵢ)², where cᵢ is each individual’s contribution. The difference between this calculated amount and the sum of actual contributions is topped up from a shared matching pool.

Why This Formula Matters

The genius of this formula is that it prioritizes the breadth of support over the depth of any single donor’s contribution. A project that receives small donations from 100 people will receive dramatically more matching funds than a project that receives a single large donation of the same total amount. This is because the mechanism treats the number of contributors as a signal of public value.

Consider two projects, each receiving $100 in direct contributions:

• Project X: One donor gives $100. Funding = (√100)² = (10)² = $100. Matching needed: $0.
• Project Y: One hundred donors each give $1. Funding = (100 × √1)² = (100)² = $10,000. Matching needed: $9,900.

Project Y, with its broad base of community support, receives 100 times more total funding, even though the same dollar amount was contributed directly. This is the power of the mechanism: it amplifies projects that genuinely matter to many people.

The Matching Pool

For quadratic funding to work, there must be a matching pool, a shared reservoir of funds that tops up individual contributions according to the formula. In a community development, this pool could be sourced from several places:

• HOA dues or community assessments: A portion of regular homeowner association fees could be set aside as the matching pool, while residents direct their remaining share toward specific projects.
• Community revenue: Revenue from shared community assets (rental income from common facilities, energy generation, parking fees, etc.) could flow into the matching pool, creating a self-sustaining cycle.
• Developer contributions: The original developer could seed the matching pool as part of initial community setup, tapering off as the community becomes self-sustaining.
• External grants or partnerships: Philanthropic organizations, government matching programs, or aligned businesses could contribute to the pool, particularly for sustainability or resilience-focused projects.

Part 3: Applying These Mechanisms in Community Developments

Infrastructure Funding Through Quadratic Finance

Planned communities and new developments feature ambitious shared infrastructure: water systems, community orchards and gardens, pools, recreational amenities, trails, and landscaped green spaces. Maintaining and expanding this infrastructure requires ongoing capital, and the question of which projects to prioritize is inherently political.

Here is how a quadratic funding round might work in practice:

1. Proposal phase: Any homeowner or community member can submit an infrastructure or maintenance proposal. Examples might include: expanding the community water system, building a new trailhead with signage, upgrading shared agricultural facilities, or resurfacing a community road.
2. Contribution phase: Over a defined period (perhaps two weeks), residents contribute funds toward the proposals they care about. Even small contributions, even a few dollars, carry significant weight because the matching formula amplifies breadth of support.
3. Matching phase: At the close of the contribution window, the matching pool is distributed according to the quadratic funding formula. Projects with broad support receive proportionally larger matching amounts.
4. Execution phase: Funded projects move to construction or implementation, managed by the HOA or a designated project committee with transparent progress reporting.

How Quadratic Voting Integrates with the HOA

The existing HOA governance structure provides the institutional backbone for implementing these mechanisms. Here is how the two can work together:

Voice Credit Allocation

Each property owner in the HOA receives an equal allocation of voice credits at regular intervals (quarterly or annually). These credits are non-transferable and expire at the end of each voting cycle, preventing accumulation and ensuring ongoing democratic participation. Renters or non-owner community members could optionally receive a smaller allocation to ensure their voices are heard on issues that affect them.

Decision Categories

Not every HOA decision needs quadratic voting. The mechanism is most valuable for decisions involving resource allocation with competing preferences. A practical framework might distinguish between:

• Routine maintenance and operations: Handled by HOA management per the governing documents, with standard budget authority. Road repairs, landscaping schedules, and utility management fall here.
• Capital improvement prioritization: Decided by quadratic voting. When the community has funds available for improvements, residents use QV to rank competing proposals. This could include new amenities, infrastructure expansion, or major upgrades.
• Rule and covenant changes: May use QV for initial preference discovery, but final adoption could still require a traditional supermajority to protect property rights and contractual expectations.
• Public goods funding: Directed through quadratic funding rounds, where the HOA manages the matching pool and contribution process.

Practical Example: A Full Funding Cycle

Imagine a community runs a quarterly quadratic funding round. The matching pool holds $25,000, sourced from a combination of HOA reserves and community revenue. Five proposals are submitted:

 Notice the result: the private pool renovation received the most direct dollars ($2,500 from just 5 wealthy donors), but because it had narrow support, it received almost no matching funds ($280). Trail lighting, with 42 modest contributors, received $8,190 in matching, reflecting its genuine public value to the broader community. This is the mechanism working exactly as intended: funding flows toward projects that matter to many, not just to those with deep pockets.

Part 4: Challenges and Practical Considerations

Collusion and Sybil Attacks

The biggest vulnerability in quadratic mechanisms is collusion: if groups of people coordinate their contributions strategically, or if one person creates multiple identities (a Sybil attack), the system can be gamed. In a physical community, this risk is naturally mitigated because residents know each other and property ownership records tie identity to physical lots. However, additional safeguards are still important:

• Identity verification: Tie voting rights and contribution eligibility to verified property ownership records or resident registration. One property, one set of voice credits.
• Pairwise coordination penalties: Advanced implementations of QF can reduce matching for contributions that appear coordinated. For example, if the same group of contributors consistently fund the same proposals together.
• Contribution caps: Setting a maximum individual contribution per round limits the impact of any single wealthy actor.

Education and Adoption

Quadratic mechanisms are unfamiliar to most people. Successful implementation requires clear communication about how the system works and why it produces fairer outcomes than traditional voting. Communities could invest in educational workshops, interactive simulations where residents practice allocating voice credits, and transparent post-round reports showing how the matching formula worked.

Matching Pool Sustainability

The matching pool must be adequately funded for the system to be meaningful. If the pool is too small relative to contributions, the matching effect becomes negligible. A well-designed implementation would establish clear rules for replenishing the matching pool, whether from HOA reserves, community revenue, or a small surcharge on property transfers within the development.

When the Formula Exceeds the Pool: Allocation Strategies

In practice, the total matching amounts calculated by the quadratic funding formula will almost always exceed the actual funds available in the matching pool. This is a feature of the formula, not a bug: it calculates the theoretically optimal funding level, and the pool constrains what can actually be distributed. The community must decide in advance how to handle this gap. There are several well-established approaches.

Option 1: Pro-Rata Scaling (Fund Everything Proportionally)

The most common approach, and the one used by Gitcoin Grants and most real-world QF implementations, is to scale all matching amounts down proportionally so that the total exactly equals the pool. If the formula says projects should receive $50,000 in matching but the pool only holds $25,000, every project receives 50% of its calculated match. This preserves the relative ratios between projects (broadly supported projects still receive proportionally more) while staying within budget. Every proposal receives some funding, and the community signal about which projects matter most is fully honored.

Option 2: Threshold Funding (Fund Only What Can Be Completed)

An alternative approach is to rank projects by their QF-calculated matching amount and fund them in order from the top until the pool runs out. Under this model, the most broadly supported projects receive their full calculated match, and lower-ranked projects may receive partial funding or none at all. This avoids spreading money so thin that no single project gets enough to actually be built, which can be a real concern for infrastructure projects with minimum viable budgets. The tradeoff is that some proposals receive nothing, which can frustrate contributors who donated to lower-ranked projects.

Option 3: Hybrid Approach (Guaranteed Minimum Plus Proportional)

A middle path gives every project that meets a minimum contributor threshold (say, at least 10 unique contributors) a small guaranteed base match, then distributes the remainder of the pool proportionally using the QF formula. This ensures that every project with meaningful community support receives at least some matching, while still rewarding broad support with larger allocations.

Choosing an Approach

For most communities, pro-rata scaling is the most natural default. It respects every contributor’s signal equally, avoids the appearance of winners and losers, and is simple to explain and verify. However, the HOA governing documents could allow the community to vote (using quadratic voting, naturally) on which allocation method to use for each round, adapting the approach as community needs evolve. Whichever method is chosen, it should be defined clearly before a funding round begins, so all participants understand the rules in advance.

Legal and Regulatory Compliance

HOAs in different jurisdictions operate under varying legal frameworks. The community’s governing documents (CC&Rs, bylaws, or equivalent) would need to explicitly authorize quadratic voting and funding mechanisms. Working with local legal counsel to structure these provisions properly is essential to ensure enforceability and protect homeowner rights.

Conclusion

Intentional communities and new city developments are experiments in how people can organize their shared lives. Quadratic voting and quadratic finance offer governance and funding mechanisms that match the ambition of that experiment. By allowing residents to express the intensity of their preferences, by directing community funds toward projects with broad support, and by making every decision transparent and verifiable, these tools help build the kind of community infrastructure that truly serves everyone.

The path forward begins with education: helping residents understand these mechanisms and experience them in low-stakes trial rounds. From there, the community can progressively integrate quadratic voting into HOA decision-making and quadratic funding into infrastructure budgets.

The future of community governance is not about giving everyone the same vote. It is about giving everyone the same opportunity to express what matters most to them. That is the promise of quadratic mechanisms, and it is a promise well suited to any community that values self-governance and collective decision-making.

Alex Voss is the Chief Financial Officer at Tipolis and the Head of Bitcoin Strategy & Board Director at the Autris Group (OTC: AUTR)

Find him on X at @AlexDVoss.