Cap Rate vs Treasury Spread
Cap Rate vs Treasury Spread
The spread between real estate cap rates and U.S. Treasury yields is the most reliable real estate valuation signal. When the spread compresses to zero or becomes negative, real estate is overvalued relative to risk-free returns. When the spread widens, real estate offers superior risk-adjusted returns. Monitoring this spread allows investors to time entries and exits with precision.
Key takeaways
- Cap rate is calculated as NOI divided by price; it represents the yield on the property.
- The spread is the difference between cap rate and the 10-year Treasury yield.
- Historically, the spread ranges 1.5%–3.5%, with 2.0%–2.5% as the long-run average.
- A spread compressed below 1.0% signals overvaluation; spreads below 0.5% are unsustainable and predict sharp cap rate expansion and price decline.
- Spreads widening above 2.5%–3.0% signal opportunity; real estate is undervalued relative to Treasuries.
The mechanics: cap rate and spread
Cap rate (capitalization rate):
Cap Rate = Net Operating Income / Property Price
Example:
- Office building generates $1 million in NOI annually.
- Sale price: $20 million.
- Cap rate = $1 million / $20 million = 5.0%.
The cap rate is the unlevered, pre-debt yield on the property.
10-year Treasury yield:
The risk-free rate. As of 2024, the 10-year Treasury yielded 4.0%–4.5%. It is the baseline return for holding a government bond with zero default risk.
The spread:
Spread = Cap Rate − Treasury Yield
Example (in 2024):
- Office cap rate: 6.5%
- 10-year Treasury yield: 4.5%
- Spread = 6.5% − 4.5% = 2.0%
The spread represents the risk premium investors require for buying real estate instead of Treasuries.
The historical spread
From 1990 to 2024, the cap rate spread (for stabilized, institutional-quality real estate) averaged 2.0%–2.5%. Some variation:
1990–1995: Spread wide (3.0%–3.5%) due to S&L crisis aftermath and distressed valuations. 1996–2000: Spread compressed to 1.5%–2.0% as economy boomed and REIT valuations expanded. 2001–2003: Spread widened to 2.5%–3.0% due to recession and 9/11. 2004–2006: Spread compressed sharply to 1.0%–1.5% due to housing boom, low rates, leverage. 2007–2009: Spread spiked to 4.0%–6.0%+ due to credit crisis and distress (but few transactions to measure). 2010–2019: Spread normalized to 1.5%–2.5% as recovery took hold and rates fell further. 2020–2021: Spread compressed to 1.0%–1.5% (near-zero rates, booming real estate). 2022–2024: Spread widened to 2.0%–3.5%+ as rates rose and cap rates expanded.
The 2004–2007 bubble: compression warning
The clearest example of spread compression predicting a correction is the 2004–2007 housing/commercial real estate bubble.
2004:
- 10-year Treasury yield: 4.0%
- Residential cap rates (implied): 3.5%–4.0% (low leveraged yields drove cap rates down)
- Office cap rates: 4.0%–4.25%
- Spread (office): 0.0%–0.25%
The spread was unsustainably compressed. Investors were buying office buildings yielding 4.0% financed with debt at 4.0%, leaving zero equity return before leverage. The only way to generate returns was through price appreciation—unsustainable.
2005:
- 10-year Treasury yield: 4.5%
- Office cap rates: 3.75%–4.0%
- Spread (office): −0.75% to −0.5%
The spread turned negative. Investors were buying office yielding 4% at Treasuries yielding 4.5%. The only returns came from leverage and price appreciation, both unsustainable.
2006:
- 10-year Treasury yield: 5.0%
- Office cap rates: 4.0%–4.25%
- Spread (office): −0.75% to −1.0%
The spread was deeply negative. This persisted only because credit was available at low rates, enabling aggressive leverage (15:1 loan-to-value ratios).
2007–2008: reversion:
- 10-year Treasury yield: 4.0% (fell as Fed cut rates; reached 2.0% by 2008)
- Office cap rates: 5.0%–6.0%+ (spiked as credit dried up and distress forced sales)
- Spread: 1.0%–4.0%+ (widened sharply)
Office prices fell 40%–50% as cap rates expanded and leverage disappeared. Investors who bought at negative spreads lost 40%–60% of their capital.
The 2020–2021 compression: rate shock ahead
The Fed cut rates to zero in March 2020 and purchased $120 billion monthly in treasuries and MBS. 10-year Treasury yields fell from 1.5% (January 2020) to 0.5% (mid-2020) to 1.5% (early 2021).
Real estate cap rates compressed:
Residential multifamily:
- 2020: cap rates 3.5%–4.0%, Treasury yield 0.5%–1.0%, spread 2.5%–3.5%.
- 2021: cap rates 3.0%–3.5%, Treasury yield 1.5%–2.0%, spread 1.0%–2.0%.
Office:
- 2020: cap rates 4.0%–4.5%, Treasury yield 0.5%–1.0%, spread 3.5%–4.0%.
- 2021: cap rates 3.5%–4.0%, Treasury yield 1.5%–2.0%, spread 1.5%–2.5%.
By late 2021, the spread had compressed to 1.5%–2.0%. The compression was justified: interest rates were at historic lows. But it signaled vulnerability to a rate shock.
2022: rate shock realization:
- 10-year Treasury yield: rose from 1.5% (January) to 4.2% (October).
- Office cap rates: expanded from 3.75% to 6.0%–6.5%.
- Spread: widened from 1.5% to 2.5%–3.0%, but at much lower prices.
Office prices fell 30%–35% in prime locations, 40%–50% in secondary/tertiary markets.
Investors who recognized the spread compression in late 2021 (spread <1.75%) could have hedged or exited, avoiding the 30%–50% declines.
Spread compression and valuation mechanics
When the spread compresses, what is happening to valuations?
Two scenarios, same cap rate:
Scenario A (wide spread):
- Property NOI: $1 million
- Cap rate: 5.0%
- Price = $1M / 0.05 = $20 million
- Treasury yield: 3.0%
- Spread: 2.0%
- Valuation: Reasonable. Investor gets 5% real estate yield vs. 3% risk-free yield.
Scenario B (compressed spread):
- Property NOI: $1 million (same)
- Cap rate: 4.0% (compressed)
- Price = $1M / 0.04 = $25 million
- Treasury yield: 3.5%
- Spread: 0.5%
- Valuation: Overvalued. Investor gets 4% real estate yield vs. 3.5% risk-free yield. Risk premium (0.5%) is inadequate for illiquidity, leverage risk, and concentration.
The spread compression reflects investor willingness to accept lower risk premium (spread). This is sustainable only if:
- Interest rates decline further (wider spread between Treasury and new baseline).
- NOI growth accelerates (raising cap rate back up).
If neither happens and rates stabilize or rise, the spread must normalize. Reversion occurs through cap rate expansion (price decline) to the historical 2.0%–2.5% spread.
Using the spread to time real estate entry and exit
Sell signal:
- Spread compressed to <1.5% nationally, <1.0% for prime assets.
- Treasuries yielding less than 2%.
- Real estate yields (cap rates) <3.5%–4.0%.
This combination signals late-cycle overvaluation. Exit or hedge. The correction is likely 12–24 months out but can be sharp when it comes.
Buy signal:
- Spread >2.5%–3.0% nationally.
- Treasuries yielding >3.5%.
- Real estate yields (cap rates) >5.0%–6.0%.
This combination signals undervaluation. Real estate offers superior risk-adjusted returns. Deploy capital into distressed assets, vacant properties, and underlevered existing buildings.
The spread and leverage
Leverage amplifies spread returns or losses.
Leverage math:
A property bought at 5.0% cap rate with:
- No leverage: Return = 5.0%.
- Debt at 4.0%: Leveraged return = (5.0% − 4.0%) / 0.2 = 5.0% (if 80% LTV).
- Debt at 3.0%: Leveraged return = (5.0% − 3.0%) / 0.2 = 10.0% (if 80% LTV).
When spreads are wide and debt is cheap, leverage amplifies returns. When spreads compress and debt becomes expensive, leverage is a liability.
In 2004–2006, investors bought office at 4.0% cap rates financed with 3.5% debt, earning 2.0% on equity (if 75% LTV). In 2022–2024, investors can buy office at 6.0% cap rates financed with 6.5% debt, earning negative returns on equity (the carry is negative without price appreciation).
The lesson: do not use leverage when spreads are compressed. The combination of low cap rate, low spread, and high leverage is toxic.
Cap rate spread decision tree
Related concepts
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Cap rate spread tells you when to buy and sell. The housing affordability index tells you when underlying demand is strained. Together, they provide a complete picture of real estate cycle risk.