How to Underwrite a CRE Deal When Interest Rates Stay Higher for Longer: A Guide for $500K–5M Investors

For the better part of a decade before 2022, commercial real estate investors operated in an environment where low interest rates subsidized acquisition pricing, suppressed debt service costs, and allowed aggressive underwriting assumptions to be validated by reliably rising asset values. Cap rate compression did much of the heavy lifting — an investor could acquire a property at a 6% cap rate, hold it for three to five years with modest operational improvements, and sell at a 5% cap rate, generating a significant return driven primarily by the movement of rates rather than the improvement of operations.

That environment is not coming back, at least not in any form that resembles what existed before. The federal funds rate remains above 3.5%, and the Federal Reserve has made clear that inflation dynamics, tariff-related price pressures, and labor market conditions will dictate the pace and magnitude of any further easing. Markets are pricing in at most one rate cut for the remainder of 2026, and the timeline for returning to the sub-3% rates that characterized the previous cycle has been pushed out indefinitely.

For investors in the $500K to $5M range — where the margin for underwriting error is narrow and the consequences of miscalculation are severe — this environment demands a fundamental recalibration of how deals are evaluated, financed, and managed.

The era of underwriting to exit cap rate compression is over. The investors who will succeed in 2026 and beyond are those who generate returns through operational execution, disciplined entry pricing, and capital structures that do not depend on rate declines to deliver their projected returns.

The Underwriting Mistakes That Are Killing Deals

Assuming Rates Will Decline on Your Timeline

The most common and most dangerous underwriting mistake in 2026 is building a pro forma that depends on interest rate declines to achieve target returns. This manifests in several ways — assuming a lower refinancing rate at year three or four, projecting cap rate compression at exit, or modeling a floating-rate bridge loan that transitions to permanent financing at a rate significantly below today's market. Every one of these assumptions introduces interest rate risk into the investment that the investor may not fully appreciate until it is too late.

The disciplined approach is to underwrite to current rates for both the hold period and the exit. If the deal does not generate acceptable returns at today's rates, it does not work. If rates decline, that becomes a bonus that enhances returns — not the foundation upon which returns depend.

Overestimating Rent Growth

In an environment where GDP growth is moderating, consumer confidence is uncertain, and the labor market is showing signs of softening, aggressive rent growth assumptions are a recipe for disappointment. National multifamily rent growth is projected at approximately 2% for 2026, with significant variation by market. Office rents remain under pressure in many submarkets. Retail rents are performing well in grocery-anchored and neighborhood centers but are flat or declining in other segments.

Conservative underwriting in this environment means modeling rent growth at or below the current market consensus, and ensuring that the investment generates acceptable returns even in a flat-rent scenario. Rent growth should be treated as upside, not as a necessary condition for the deal to achieve its minimum return threshold.

Ignoring Operating Expense Escalation

Rising insurance costs, property taxes, utility expenses, and maintenance costs are eroding net operating income across virtually every CRE asset class. Insurance premiums in particular have surged over the past several years and show no signs of reversing. Investors who are projecting stable or modestly increasing operating expenses while modeling aggressive revenue growth are building pro formas that overstate cash flow and understate risk.

The solution is to underwrite operating expenses individually, using current quotes and market data rather than historical averages. Insurance should be quoted directly from brokers. Property tax assumptions should reflect recent reassessment trends in the target jurisdiction. Maintenance and capital expenditure budgets should account for the tariff-driven increases in material costs that are now embedded in the market.

How to Build a Pro Forma That Works in 2026

Start With Current Market Rents — Not Trailing

Your revenue projection should begin with current achievable market rents, validated by recent comparable lease transactions in the submarket. Trailing twelve-month financials from the seller may reflect below-market rents on long-term leases, above-market rents that will not be renewed, or concessions that inflate the effective vacancy rate. Starting with verified market rents and applying conservative lease-up assumptions is far more reliable than projecting from historical data.

Model Multiple Rate Scenarios

Every pro forma should include at least three interest rate scenarios: a base case using current market rates, a downside case with rates 50 to 75 basis points higher, and an upside case with rates 50 to 75 basis points lower. The investment should meet minimum return thresholds in the base case and remain viable — meaning it generates positive cash flow and the capital structure is sustainable — in the downside case. Investments that only work in the upside scenario are speculative bets on interest rate movements, not sound real estate investments.

Stress-Test the Debt Service Coverage Ratio

Lenders in 2026 are underwriting to tighter DSCR requirements than they were even twelve months ago. A minimum DSCR of 1.25x is standard for most conventional and agency loans, and many lenders are requiring 1.30x or higher for transitional assets. Your pro forma should demonstrate that the property achieves the required DSCR at stabilization and maintains it through the hold period under your base case assumptions. Run a sensitivity analysis showing how the DSCR responds to a 10% decline in revenue and a 10% increase in operating expenses simultaneously — this is the scenario that keeps lenders up at night, and it should be the scenario you underwrite to survive.

Budget for Realistic Capital Expenditures

Capital expenditure assumptions are one of the most common areas where pro formas diverge from reality. Every property requires ongoing capital investment — roof repairs, HVAC replacements, parking lot resurfacing, unit turns, and common area improvements. In a higher-rate environment where refinancing is more expensive and property values may not appreciate as quickly as projected, the ability to fund capital needs from operating cash flow rather than from refinance proceeds becomes critical.

A well-underwritten deal in 2026 includes a dedicated capital reserve of $250 to $500 per unit per year for multifamily assets, or an equivalent percentage of gross revenue for other asset types, with a detailed schedule of anticipated capital needs over the hold period.

Structuring Capital for a Higher-Rate Environment

Fix Your Rate When You Can

In an environment where rate volatility is the norm, locking in fixed-rate financing provides both certainty and protection. Floating-rate bridge loans remain appropriate for transitional assets that require a period of stabilization before permanent financing, but investors should have a clear and realistic path to refinancing into fixed-rate debt. The cost of interest rate caps — which are required by most bridge lenders — has declined from the peaks of 2023 and 2024 but remains a meaningful expense that must be factored into the total cost of capital.

Right-Size Your Leverage

The temptation in a higher-rate environment is to maximize leverage to stretch equity further. This is precisely backward. Higher rates mean higher debt service, which means less cash flow cushion to absorb vacancy, rent decline, or unexpected capital needs. The most resilient capital structures in 2026 are those with moderate leverage — typically 60% to 70% loan-to-value — that provide comfortable debt service coverage and allow the investor to weather market disruptions without triggering covenant defaults or requiring emergency capital infusions.

Build in Flexibility

Capital structures should include optionality wherever possible — prepayment flexibility, extension options on bridge loans, and the ability to bring in additional equity or subordinate capital if needed. Rigid capital structures that require precise execution on a specific timeline are high-risk in an uncertain environment. The cost of building in flexibility is almost always worth the protection it provides.

The Bottom Line for Small-Balance Investors

The higher-for-longer rate environment is not a reason to stop investing in commercial real estate. Transaction volume is increasing, deal flow is improving, and the fundamental demand for well-located, well-operated real estate assets remains strong. But it is a reason to underwrite differently, structure capital more carefully, and hold yourself to a higher standard of analytical discipline.

The deals that will generate the strongest risk-adjusted returns in this cycle are those where the investor pays a price that supports attractive returns at current market rents and current interest rates, operates the asset to maximize net operating income through disciplined management, and structures capital that does not depend on favorable market movements to deliver its projected returns.

In a higher-for-longer rate environment, operational excellence is not optional — it is the primary driver of returns. The investors who recognize this and adjust their approach accordingly will outperform those who are still waiting for the market to come back to them.