When Housing Doesn’t Pencil, Who Pays the Difference?

Imagine a developer who can build an apartment but cannot charge the rent needed to pay for it. The construction bill does not shrink simply because the future tenant has a lower income. Unless someone reduces the cost or fills the financing gap, the project may never get built.

This is where government enters the housing equation. In Washington, DC, public financing can turn an otherwise unworkable affordable housing proposal into a feasible one. But it can also bring an intricate set of applications, approvals and restrictions. The question is not simply whether subsidies are good or bad. It is whether the system delivers affordable homes efficiently—and who has the resources to participate.

How public financing makes housing possible

DC’s Housing Production Trust Fund provides gap financing for affordable housing production and preservation. The District’s 2026 consolidated financing solicitation also included federal 9% Low-Income Housing Tax Credits, DC tax credits, HOME, Community Development Block Grant and other resources. Different tools play different roles: some provide loans, some attract investor equity, and others support ongoing affordability or reduce costs.

These resources are not free money for any expensive apartment project. Developers generally must meet eligibility rules, provide financial information and commit to specified affordability outcomes. Those conditions help direct limited public resources toward households the market would otherwise underserve.

A subsidy can close the gap without eliminating the risk

Consider a hypothetical $50 million affordable housing development that can support only $40 million from conventional debt and committed private capital. A $10 million public contribution could, depending on its terms, help close the remaining funding gap. The illustration does not estimate an actual DC award; real projects must be underwritten for their rent restrictions, operating costs, reserves, loan terms and investor requirements.

And receiving an initial selection is not the same as having cash available to build. DC’s 2026 consolidated RFP states that selection for further underwriting is not a funding commitment and that awards remain subject to government funding and approval requirements. For a project carrying land and predevelopment expenses, uncertainty itself can be costly.

Who can afford to apply?

This is the overlooked access question. DC’s 2026 Housing Production Trust Fund process asks applicants for a development narrative, preliminary financial model, architectural materials and, at the financing stage, qualifications, a survey, appraisal, market study, zoning confirmation and plans or permits. Applications move through review, financing and approval stages. These requirements help protect public investment, but assembling them costs time and money before any award is assured.

An established affordable housing developer may have in-house specialists, lender relationships and the ability to carry a site through a long approval period. A smaller builder may have to hire the same expertise from outside, spend a larger share of available capital on applications, and risk losing the site before a funding decision. That is a plausible structural disadvantage—not yet proof that smaller developers receive fewer awards. Establishing the scale of exclusion would require application and award data linked to developer characteristics.

Not every affordable housing policy provides a subsidy

There is another distinction that often gets lost. DC’s inclusionary zoning rules generally require covered developments to set aside 8% to 10% of residential floor area for income-restricted units. Unlike a direct development loan or tax credit, this approach typically requires the market-rate project to help support the below-market units, with development incentives such as added density.

A January 2026 Urban Institute study counted 2,632 affordable units completed through DC’s inclusionary zoning program between 2015 and September 2024; 87% received no direct District subsidy. That is evidence of real housing production. The same researchers cautioned that requiring below-market units within new buildings can make financing more difficult and explored whether affordability in existing buildings might sometimes be achieved at lower public cost.

DC is changing how developers seek assistance

The District has recognized at least one practical problem: timing. In March 2026, DHCD introduced a rolling Housing Production Trust Fund application process. Rather than relying only on a single competition window, developers can submit projects as they approach readiness. DHCD says the design aims to make closing dates more predictable and reduce uncertainty around carrying costs.

That change is promising as a process reform, but it is not yet evidence of shorter average approval times or broader participation. Those outcomes need to be measured after implementation.

What should success look like?

The public should be able to ask more than how many dollars were awarded. How many homes were completed? How deeply affordable are they, and for how long? What was the public cost per home? How long did funding take? How many qualified projects failed to close? How many small or first-time developers applied—and how many succeeded?

Those questions do not assume that public financing is the problem. They acknowledge that subsidies can be indispensable while still leaving room to improve how they are delivered. A well-designed program should make affordable housing possible without requiring an unnecessarily expensive path to get there.

The central issue is not whether government should help. It is whether every dollar—and every month spent navigating the process—produces as much lasting affordability as possible.

Read the series

Part 2 of 2 · Read Part 1: Washington, DC Needs More Housing. So Why Is It So Hard to Build?