Private NNN buyers do not get a live market screen for every deal.
A corporate bond investor can look at Treasury yields, credit spreads, bond yields, rating changes, and trading levels before making a decision. A direct NNN buyer usually gets a broker flyer, a lease abstract, a rent roll, a cap rate, and a seller who believes yesterday’s pricing is still today’s market.
That is why public credit markets matter.
They do not tell a buyer exactly what a Walgreens, AutoZone, McDonald’s, Dollar General, bank branch, grocery store, or distribution facility should trade for. Private real estate is too specific for that. But public credit markets can tell a buyer whether the cap rate being offered makes sense relative to the risk-free rate, the tenant’s credit quality, bond-market pricing, liquidity, lease duration, and property-level risk.
Used correctly, public credit is not a substitute for real estate underwriting. It is a discipline against overpaying for a familiar logo.
In mid-2026, that discipline is especially useful. Treasury yields remain high enough that income investors have real alternatives. Investment grade corporate bond yields are competitive with some high-quality NNN cap rates. The Boulder Group reported average single-tenant net lease cap rates of 6.80% in the first quarter of 2026, with retail at 6.55%, industrial at 7.15%, and office at 7.90%. At the same time, Federal Reserve Economic Data showed investment grade corporate bond series and BBB corporate spread data that let buyers compare private cap rates against liquid corporate-credit pricing.
The practical question is simple: if the public market is willing to own a tenant’s unsecured corporate credit at one yield, what extra return should a private buyer require to own one leased building tied to that tenant, that lease, and that site?
Start with the risk-free rate
Every NNN deal competes with the Treasury market, even when nobody says it out loud.
The 10-Year Treasury is not a perfect benchmark for a 15-year lease or a 20-year hold. It has no tenant, no roof, no parking lot, no re-leasing risk, no property taxes, and no broker commission at exit. But it is the cleanest public reference point for long-term, dollar-denominated income.
If the 10-Year Treasury is near 4.5% and a NNN property is offered at a 5.25% cap rate, the buyer is being offered roughly 75 basis points over Treasuries before adjusting for illiquidity, financing, closing costs, reserves, lease complexity, tenant credit, and residual real estate risk. That may be reasonable for an irreplaceable site with a long lease to an exceptional credit. It may be thin for a secondary-market box with over-market rent and a specialized building.
If the same property is offered at a 6.75% cap rate, the spread over Treasuries looks more generous. But a higher spread does not automatically mean a better deal. The spread may be paying the buyer for a shorter lease, weaker rent coverage, a questionable guarantor, a smaller buyer pool, or a property that will be difficult to reuse.
The risk-free rate sets the floor. It does not answer the underwriting question.
Then compare the tenant to public corporate credit
The next step is to ask whether the tenant’s public credit story supports the private cap rate.
For rated tenants, buyers can use S&P, Moody’s, Fitch, and public bond-market data to understand how the capital markets price the tenant’s credit. S&P describes credit ratings as opinions about creditworthiness. Fitch’s rating definitions similarly distinguish investment grade from speculative grade credit risk. Federal Reserve Economic Data publishes ICE BofA corporate bond series, including BBB option-adjusted spreads, that show how public markets price investment grade credit over Treasuries.
That information is not abstract. It should affect real estate pricing.
If a tenant’s bonds are trading at a low yield spread, the public market is saying that issuer-level credit risk is relatively modest. A private NNN buyer should then ask why the property cap rate is materially wider. Sometimes the answer is attractive: real estate illiquidity, smaller buyer pool, and 1031 timing create a premium for a patient direct owner. Sometimes the answer is less attractive: the lease is not guaranteed by the rated parent, rent is above market, the site is mediocre, or the asset has limited reuse value.
If a tenant’s bonds are trading at a wide spread, the public market is warning that credit risk has risen. A private NNN buyer should be careful about accepting a tight cap rate just because the tenant has a national brand. The bond market may be seeing leverage, margin pressure, refinancing risk, store closures, litigation, or industry decline before the real estate flyer reflects it.
This is where the private market often lags. Bond spreads can move quickly. NNN sellers do not always reprice quickly. A buyer who ignores public credit may end up paying last year’s real estate price for this year’s credit risk.
Do not confuse tenant credit with lease credit
Public credit markets price the issuer. NNN buyers have to price the lease party.
That distinction is easy to miss. The sign on the building may say McDonald’s, Taco Bell, CVS, Dollar General, Chase, or FedEx. The lease may be signed by a parent company, a subsidiary, a regional operating entity, a franchisee, a guarantor, or a private operator with no public rating at all.
A corporate bond yield is useful only if the lease economics are actually tied to the same credit story. If the tenant is a franchisee, the public parent’s bond spread does not directly support the rent. If the lease is signed by a subsidiary with no parent guarantee, the rated parent’s balance sheet may not be the buyer’s real credit. If the tenant is private, public credit markets can still provide sector context, but the buyer needs financial statements, rent coverage, unit economics, and guarantor analysis.
This is why the prior InvestmentGrade.com framework on parent guarantees versus subsidiary tenants matters. Credit analysis starts with the party legally obligated to pay rent, not the logo on the pylon sign.
Use credit spreads to challenge the cap rate
A cap rate is not a standalone number. It is a spread.
The buyer should compare the offered cap rate against at least four reference points:
- The 10-Year Treasury yield.
- The broad investment grade corporate bond yield.
- The tenant’s own bond yield or rating-tier spread, if available.
- Recent NNN market cap rates for similar tenant quality, lease term, sector, and real estate type.
That comparison will not produce one magic answer. It will produce better questions.
If a high-quality tenant’s unsecured bonds imply a yield in the low-to-mid 5% range and the property is offered at a 5.50% cap rate, the buyer needs a strong reason to give up bond liquidity for a thin real estate premium. That reason might exist if the lease is long, the site is exceptional, the rent is sustainable, the buyer needs a 1031 replacement property, and the investor values depreciation and direct ownership. But the reason should be explicit.
If the property is offered at a 6.75% cap rate while the tenant’s bond yield is much lower, the buyer should ask what the real estate market is pricing that the bond market is not. It may simply be the normal premium for illiquid single-asset ownership. Or it may be a signal that the lease, site, term, rent level, or exit market is weaker than the tenant name suggests.
If the tenant’s public credit spreads have widened but the NNN cap rate has not, the buyer should be skeptical. Public markets may be repricing credit faster than private real estate owners are willing to admit.
Adjust for lease duration and rent growth
Bond math and lease math are not identical, but duration matters in both markets.
A bond with a longer maturity is more exposed to interest-rate movement. A NNN property with a long remaining lease is more dependent on the durability of that rent stream and the exit cap rate when the next buyer underwrites the asset.
A 20-year lease to a strong tenant can support tighter pricing because it reduces near-term rollover risk. But long duration is not always positive. If rent is flat for 20 years, inflation erodes real income. If rent starts above market, a long lease may protect current income while increasing the risk that renewal or re-tenanting becomes painful later. If the building is specialized, the buyer may own a long income stream attached to a hard-to-reuse asset.
Public credit markets force the buyer to think in duration terms. A 15-year bond and a 15-year lease both expose the investor to time. The difference is that the bond investor’s downside is primarily issuer credit and market price, while the NNN owner’s downside includes issuer credit, lease terms, building quality, location, replacement rent, and buyer demand at exit.
That extra complexity should be paid for in the spread unless the real estate is strong enough to justify tighter pricing.
Separate credit risk from residual real estate risk
The best NNN deals usually work in two ways. The tenant credit supports the current income, and the real estate supports the exit if the tenant story changes.
Public credit markets help with the first half. They are less helpful with the second.
A rated tenant can tell the buyer something about probability of payment. It does not tell the buyer whether a former pharmacy can be converted to urgent care, whether a bank branch sits on a durable deposit corridor, whether a QSR pad has drive-thru scarcity, whether a discount store rent is sustainable in a small market, or whether a distribution building has the clear height, loading, access, and labor market that future users will want.
That is why the InvestmentGrade.com article on tenant credit ratings versus real estate residual value is central to private pricing. A bond can be underwritten mostly at the issuer level. A NNN property cannot.
If the public credit market says the tenant is strong and the real estate is also strong, the buyer may accept a tighter cap rate. If the credit is strong but the real estate is weak, the buyer should demand a wider spread. If the credit is weak but the real estate is strong, the buyer may still have a defensible investment if the price reflects re-tenanting risk. If both are weak, the cap rate needs to be very high, and even then the deal may not be worth the distraction.
Watch for private-market lag
One of the most useful things public credit markets provide is speed.
Bond markets reprice every day. NNN real estate reprices slowly. Sellers anchor to appraisals, prior offers, broker opinions, replacement-cost stories, and emotional attachment to a long-term tenant. 1031 buyers can also distort pricing because identification deadlines compress decision-making.
That lag creates both risk and opportunity.
The risk is obvious: a buyer may overpay for a property after public markets have already repriced the tenant or sector. A pharmacy deal, bank branch, office-adjacent asset, or franchisee QSR property can look safe on an old cap-rate comp while public markets are telling a different story about leverage, margins, closures, or refinancing risk.
The opportunity is more selective. Sometimes private sellers overreact to a headline while public markets remain calm. Sometimes a tenant’s bond spreads are stable, ratings are steady, and the real issue is a property-specific story that can be underwritten. In those cases, a disciplined buyer may find value because the market is pricing fear instead of actual credit deterioration.
The point is not to let public markets make the decision. The point is to notice when public and private pricing disagree.
A practical pricing worksheet for NNN buyers
Before identifying or buying a single-tenant NNN property, a buyer can use a simple public-credit pricing check.
First, write down the offered cap rate and remaining lease term. Then identify the lease obligor and guarantor. After that, check whether the true obligor or parent guarantor has public ratings, bond yields, or public financial disclosures.
Next, compare the deal against the 10-Year Treasury, broad investment grade corporate yields, rating-tier spreads, and current net lease cap-rate research. The buyer is not trying to copy public markets. The buyer is trying to answer one question: does the real estate spread pay enough for what bonds do not carry?
Then adjust for the details that public credit cannot see:
- Is the lease absolute NNN, double net, modified net, or something messier?
- Are rent bumps fixed, CPI-based, flat, or backloaded?
- Is the tenant obligated at the parent, subsidiary, or franchisee level?
- Is rent sustainable relative to store sales, market rent, and replacement rent?
- Does the site have strong residual demand if the tenant leaves?
- Would lenders and future buyers view the asset as institutional or merely recognizable?
If the spread still looks fair after those adjustments, the deal deserves deeper diligence. If the spread only looks good before those adjustments, the buyer is probably being paid with a headline yield instead of real protection.
Where public credit helps most
Public credit markets are most useful in four situations.
First, they help buyers avoid overpaying for rated tenants. A strong credit tenant can justify tighter pricing, but not any price. If the cap rate is too close to liquid bond yields, the buyer needs to be honest about why direct ownership is still superior for that investor.
Second, they help buyers spot deteriorating credit before real estate comps catch up. Widening spreads, negative outlooks, downgrades, and refinancing pressure should all make a buyer more cautious about tight cap rates.
Third, they help price unrated private deals by analogy. A private franchisee or operator may not have bonds, but sector spreads, public peers, and rating definitions can still help frame the risk premium.
Fourth, they help 1031 buyers stay disciplined under time pressure. The 45-day identification window can turn a mediocre deal into a tempting solution. A public-credit check gives the buyer an outside reference point when the clock is loud.
The bottom line
Public credit markets cannot price a private NNN deal by themselves. They do not know the roof, the rent, the lease language, the local market, the guaranty, the drive-thru, the dark-store risk, or the next buyer’s appetite.
But they can keep a buyer honest.
They show what investors are being paid to own liquid corporate credit. They show how rating tiers, Treasury yields, and credit spreads are moving. They reveal when public markets are calm, when they are nervous, and when private real estate pricing may be stale.
For direct NNN buyers, the best use of public credit is not to turn real estate into a bond. It is to ask whether the cap rate pays enough for the extra work of owning real estate.
A good NNN deal should pass both tests. The credit should support the income, and the real estate should support the exit. Public markets help price the first part. Disciplined property underwriting proves the second.
Need help pricing a NNN deal against public credit markets?
InvestmentGrade.com helps 1031 exchange buyers and direct NNN investors compare tenant credit, cap rates, lease structure, bond-market context, and residual real estate value before they identify or acquire replacement property. Start with the Investment Grade tenant ratings index, review the 2026 NNN cap-rate framework, or request a tenant-credit review before committing to a shortlist.
Sources
- Federal Reserve Economic Data: 10-Year Treasury constant maturity data and ICE BofA BBB US Corporate Index Option-Adjusted Spread.
- S&P Global Ratings: Understanding credit ratings.
- Fitch Ratings: rating definitions and investment grade risk categories.
- The Boulder Group Q1 2026 Net Lease Research Report.
- InvestmentGrade.com: Bonds vs NNN Real Estate: What the Spread Means; Tenant Credit Ratings vs Real Estate Residual Value; Parent Guarantee vs Subsidiary Tenant; NNN Cap Rates 2026.
