Managing Tariff Uncertainty in Affordable Housing Development

Recent developments in federal tariff authority have renewed conversations about trade policy and its impact on construction. While legal interpretations may evolve and future decisions could modify or eliminate certain tariffs, the day-to-day reality for affordable housing developers remains the same: Uncertainty continues to shape pricing, procurement decisions, and project planning.

For affordable housing, this is not theoretical. Projects rely on layered financing structures, public funding requirements, and carefully balanced underwriting models. Even modest cost increases can affect gap funding, equity assumptions, debt coverage and overall feasibility. With limited revenue flexibility, there is little room to absorb unexpected shifts.

At NHPF, we are responding by planning earlier, evaluating risks more closely and staying closely aligned with our partners. The strategies below reflect practical approaches developers can use in this environment.

Plan for volatility, not just higher prices

Construction material costs increased approximately 3.5 percent in the second half of 2024. For affordable housing projects, that can translate into roughly a 1 to 2 percent increase in total development cost.

While that may seem modest, margins in affordable housing are tight. When costs rise, funding gaps can widen and may require additional subsidies or revised financial assumptions.

Even if tariffs are adjusted or removed, pricing rarely moves backward. Once uncertainty enters the supply chain, it tends to persist. For that reason, teams should plan for volatility, not just higher prices.

Recognize how the market is responding

Across the industry, we are seeing practical adjustments:

• Manufacturers are holding conservative pricing.
• Subcontractors are limiting bid guarantees.
• Vendors are shortening quote windows.
• Developers are adding larger contingencies earlier in the process.

These responses are understandable, but together they make it more difficult to lock in costs and increase pressure on early-stage budgeting. For teams working under funding deadlines, early cost validation and ongoing budget review are critical.

Use preconstruction to reduce risk

The best opportunity to manage exposure is before contracts are finalized and long-lead items are ordered. Practical steps include:

• Identifying materials that may be sensitive to tariff changes early in design
• Exploring domestic alternatives where appropriate
• Using performance-based specifications to maintain flexibility
• Pre-approving substitutions when feasible
• Advancing procurement of long-lead items when financing allows

Performance-based specifications are especially valuable because they define required outcomes rather than naming specific products. This preserves flexibility while maintaining quality and compliance.

It’s also important to recognize that domestic assembly does not always eliminate global supply exposure. Mechanical, electrical and plumbing systems are particularly sensitive due to long lead times and limited substitution options. Early coordination in these areas can help prevent delays.

Separate finish materials from core systems

Tariff impacts often appear first in finish materials such as cabinetry, countertops, plumbing fixtures and lighting. These items typically allow substitution, though changes may affect cost, aesthetics, or timing.

Core building systems are more complex. Substitutions may require design revisions, regulatory review or coordination with funding partners. Lead times are often longer, and midstream changes can affect both schedule and budget.

Early system selection decisions provide the greatest opportunity to manage risk. The sooner potential exposure is identified, the more flexibility a project retains.

Communicate early with capital partners

Affordable housing projects depend on structured capital stacks that may include public funding, tax credits, private equity and debt. These structures are carefully balanced, and even small cost changes can affect:

• Gap funding requirements
• Equity pricing assumptions
• Debt coverage ratios
• Overall feasibility

When conditions shift, early and transparent communication with lenders, investors and public agencies is essential. Proactive discussion allows teams to evaluate solutions collaboratively rather than react under compressed timelines.

Open communication builds trust and reduces the likelihood of last-minute restructuring that can slow project delivery.

Building resilience

Future tariff direction will depend on ongoing legal and policy considerations. In the near term, developers should expect continued change.

For affordable housing teams, the objective is not to predict outcomes, but to build projects that can withstand shifting conditions.

That means:

• Conducting early cost analysis
• Maintaining realistic contingencies
• Writing flexible specifications
• Clarifying escalation and substitution terms in contracts
• Staying closely aligned with financing partners

Volatility may not disappear, but it can be managed through disciplined planning and collaboration.

Trade policy developments continue to influence construction pricing and supply chain behavior, and affordable housing development is directly affected.

While future actions may change tariff structures, current conditions remain fluid. In this environment, careful preconstruction planning, early risk identification, and clear communication are essential to maintaining feasibility and delivering projects successfully.

Affordable housing development has always required precision and partnership. In a time of uncertainty, those qualities are even more critical. With thoughtful strategy and proactive coordination, developers can continue advancing high-quality housing in a changing environment.

Christine Wu is vice president of pre-construction, NHPF.