Reviewed by Robert Mendieta Jr., CCIM — Associate Broker · Commercial Division · DRE #01422904
Last updated: October 3, 2026
An NNN investment is the purchase of a property whose tenant pays the taxes, insurance and maintenance on top of base rent, for example a single-tenant net lease building such as a restaurant, pharmacy or auto-service store. The pitch is passive income. The reality is that the income is only as passive as the tenant’s credit, the years left on the lease and the landlord duties the lease leaves behind.
This guide is for buyers: pricing, lease term, hidden risk, a buying checklist and current Inland Empire data. For lease mechanics, see how a triple net (NNN) lease works.
The direct answerWhat Is an NNN Investment, and Is It Really Passive Income?
An NNN investment is buying a property, usually leased to a single tenant, whose lease makes that tenant pay taxes, insurance and maintenance in addition to rent, so your net income is more predictable. It is mostly passive while the lease runs. The risk concentrates in one tenant’s credit and in what happens when the lease ends.
That is the trade in a triple net investment: one simple income stream in exchange for one tenant driving your return. Where NNN sits among other structures is covered in the types of commercial leases guide.
Key Takeaways
- The national 12-month median single-tenant net lease retail cap rate was 6.4% (CoStar, Q1 2026).
- Net lease cap rates price about 200 basis points over Treasuries, down from 300–400 pre-pandemic.
- Remaining term moves price: 15-plus versus under nine years shifted median cap rates 29 to 82 basis points by sector.
- The hidden risk is rollover: re-leasing cost, downtime and a reset to market rent.
- Cap rates on Inland Empire logistics sales above $10 million have expanded about 150 to 200 basis points; CoStar forecasts stable pricing in 2026 and a rise in 2027.
How Are NNN Properties Priced? Cap Rates, Treasuries and the Spread
NNN properties are priced by cap rate, first-year net income divided by purchase price, and buyers judge that yield against the 10-year Treasury. The gap between them is your risk premium.
CoStar, Single-Tenant Net Lease Retail National Report, Q1 2026 · national, retail only
- 6.4% 12-month median cap rate against a 4.2% median 10-year Treasury.
- A spread of about 200 basis points, versus 300–400 before the pandemic.
- Deals closed 4.6% below asking over the 12 months through Q1 2026, after 5.0 median months on market.
A cap rate works like a bond yield: lower cap rate, higher price for the same income. For the math, see how to calculate cap rate. Nationally, NNN cap rates for single-tenant retail were flat in Q1 2026 at a 6.3% quarterly median, have stayed within a 10-basis-point range since Q4 2023, and averaged about 6.5% over the last decade. CoStar expects low vacancy, muted new supply and relatively strong rent growth to hold them in place with a downward bias near term.
Demand is uneven by sector. Nationally, quick-service restaurants remain the most active category, with $923 million of 12-month sales, nearly double the volume of dollar stores, the second-largest segment; dollar store transactions retraced roughly 40% in Q1 2026 after an eight-quarter high, per CoStar. Buyers still negotiate. The 4.6% discount to asking compares with 1.3% in 2022 and a 2.9% pre-pandemic average.
Tenant, sector, regionWhat Drives NNN Cap Rates: Tenant Credit, Sector and Region
CoStar names four drivers of NNN cap rates: lease term, tenant credit, building vintage and location. Sector layers on top, because each carries a different mix of credit and re-leasing difficulty.
| Sector | Median cap rate | Region | Median cap rate |
|---|---|---|---|
| Quick-service restaurant | 5.8% | West | 5.76% |
| Automotive | 6.1% | South Central | 6.27% |
| Casual dining | 6.3% | Southeast | 6.40% |
| Pharmacy | 6.6% | Northeast | 6.60% |
| Dollar store | 6.9% | Midwest | 6.75% |
The West had the lowest regional median at 5.76%, and West quick-service restaurants traded at 5.32%. A buyer in the West pays more per dollar of rent and starts with less yield cushion.
Credit is who stands behind the rent. CoStar treats corporate quick-service restaurants, more likely to carry a corporate guarantee, as stronger credit than franchise locations backed by a franchisee. Nationally, quick-service property sales rose 6% in Q1 2026 from the fourth quarter of 2025, and CoStar says investor preferences continue to favor stronger corporate-backed credit profiles.
The biggest leverWhy Does Lease Term Remaining Matter So Much?
Because the lease is most of what you buy: in every sector CoStar tracks, NNN cap rates rise as remaining term shrinks. For dollar stores, 15-plus years versus under nine years was an 82-basis-point gap.
| Sector | 15+ years left | 10–14 years | Under 9 years | Term penalty |
|---|---|---|---|---|
| Dollar store | 6.75% | 7.01% | 7.57% | 82 bps |
| Casual dining | 6.17% | 6.54% | 6.90% | 73 bps |
| Pharmacy | 6.37% | 6.75% | 7.00% | 63 bps |
| Automotive | 5.89% | 6.30% | 6.46% | 57 bps |
| Quick-service restaurant | 5.71% | 5.90% | 6.00% | 29 bps |
Hypothetical example · same rent, different term
A dollar store building nets $120,000 a year. At the 15-plus-year median of 6.75% it is worth $1,777,778. At the under-nine-year median of 7.57%, the same income is worth $1,585,205: $192,573, or about 10.8%, less with no change in rent.
For an industrial example with shorter term left, in December 2025 a fully leased 526,000-SF San Bernardino logistics building with about 4.5 years left on its lease sold for $123 million ($234/SF). CoStar reports a year-one pro forma cap rate in the high 5% range, and the 56-acre sale included about 30 acres of excess land.
The table covers building-and-land ownership; a ground lease, where you own only the land, is a different asset reported separately.
The hidden riskPassive Income vs. Hidden Risk: What Can Go Wrong in a Triple Net Investment?
The risk is concentrated: one tenant, one lease and one expiration date carry the whole income stream. Every feature that feels passive has a matching risk to underwrite.
| What looks passive | Where the hidden risk sits |
|---|---|
| No tenants to manage | All income rests on one tenant’s credit and on who guarantees the lease. |
| Tenant pays the expenses | The lease may leave the roof, structure, parking or capital items with you. |
| A long lease locks in income | Each year shortens the term, and shorter term sells at a higher cap rate. |
| A building built for the tenant | Hard to repurpose, so downtime and re-leasing cost run higher. |
| The asking cap rate | An opening position. Closed sales, not listings, set value. |
Rollover cuts both ways. At expiration the rent can reset to market. In Inland Empire industrial, CoStar puts the triple-net asking rent average for available space about 25% below its 2023 peak; with concessions, effective rents are up to 40% lower, and several months of free rent is common. Yet tenants on older leases still face rent hikes, because market asking rents are still up about 20% from five years ago and have nearly doubled over the past decade. The real question is how your rent compares with market, and what replacing the tenant would cost.
Before you buyNNN Buying Checklist: 10 Questions to Answer Before You Buy
Before you buy one of these NNN properties, answer ten questions about the tenant, the lease, the building and the price. To confirm those lease facts before you close, see our guide to the estoppel certificate. For the fuller pre-purchase checklist, see our guide to the commercial real estate due diligence checklist.
- Who guarantees the lease? Corporate and franchisee guarantees are different credit.
- How much firm term is left, and what options follow? Price the remaining years, not the original term.
- What are the rent increases? Note the amount and timing of each bump.
- What stays with the landlord? Read roof, structure, parking and capital items line by line; see how CAM charges flow.
- Building and land, or a ground lease? Different assets, different pricing.
- Could another tenant use the building? Re-use drives re-leasing cost.
- Is the rent above or below market? That decides roll-down or roll-up.
- How does the price compare with closed sales? Nationally, deals closed 4.6% below asking over the 12 months through Q1 2026.
- How long has it been listed? Net lease retail typically trades in four to six months; overpriced listings can sit six to twelve.
- What is your exit cap rate? Price the resale off a shorter remaining term.
How Much Do You Need to Invest in NNN Investment Properties?
There is no fixed minimum, but national data gives an anchor: the 12-month median single-tenant net lease retail sale price was $3.0 million, and the median asking price for listed deals was $2.8 million. Your cash need is that price minus what a lender will finance, and loan terms vary by lender, tenant and borrower.
The typical listing is small: a 5,427-SF median building asking $527/SF, among approximately 2,300 net lease retail deals on the market nationwide at the end of Q1 2026, down from over 2,500 a year earlier. Quick-service restaurants make up over a third of active listings. Budget beyond price for NNN investment properties, too: reserves for any landlord-side items, plus leasing costs and downtime at expiration.
Local contextIs Inland Empire Industrial Still a Good NNN Investment in 2026?
It can be, but in 2026 the case is total return and rent roll-up, not day-one yield. CoStar’s forecast has pricing fairly stable in 2026 and rising again in 2027, with further downside risk still possible.
Inland Empire industrial · Apex’s analysis of CoStar data, Q3 2026
Market cap rate 4.9%; closed deals averaged a 5.9% cap rate, and 453 transactions totaled $4.4 billion over 12 months. Logistics sales above $10 million trade in the mid-5% to 6% range, up about 150 to 200 basis points from averages below 4%, and modern, fully leased institutional-grade logistics buildings have priced fairly steadily around $250/SF since 2022. Vacancy is 8.7%, availability 12.5%, and CoStar’s forecast has vacancy falling to 8% in 2027.
CoStar says investors here have traded upfront yield for total return while they wait to mark in-place rents to market. That is rollover in your favor: a lease signed before the 2021–22 rent spike may roll up, while one signed at the 2023 peak may roll down. See the Inland Empire industrial market report and warehouse space cost breakdown for current rents. For the full cap rate breakdown by submarket, see our guide to Inland Empire industrial cap rates.
In Inland Empire retail, CoStar puts the market cap rate at 6.5% and says high-quality single-tenant net-leased assets continue to trade at tighter yields: an 862-SF La Quinta pad leased into 2035 traded for $2.6 million at a 4.7% cap rate in June 2026. Tight pricing doesn’t remove tenant risk: the preleased, newly built 53,700-SF anchor of Fontana’s Citrus Crossroads center sold for $17.8 million ($331/SF) at a 5.4% cap rate in April 2025, but its Amazon Fresh store has since closed as part of Amazon’s national pivot, and the space was offered for sublet in Q2 2026.
Tax-deferred buyersCan You Buy an NNN Property With a 1031 Exchange?
Generally yes: Section 1031 covers real property held for business or investment, and real properties are generally like-kind whether improved or unimproved. In a deferred exchange, replacement property must be identified within 45 days after you transfer the property you give up, and received within 180 days or by your return due date (including extensions), whichever is earlier. If you also receive cash or other non-like-kind property, you must recognize gain to the extent of what you receive, and the exchange is reported on Form 8824, per the IRS like-kind exchange guidance and Form 8824 instructions.
Underwriting the tenant and lease has to fit that 45-day window, the kind of 1031 replacement property search Apex supports. Some NNN supply comes from a sale-leaseback: in January 2026 a fully leased 129,704-SF industrial building in Rancho Cucamonga sold for $31.7 million ($244/SF) in a sale-leaseback, per CoStar’s Airport Area industrial submarket report.
Tax note: Apex is not a law, tax or accounting firm. This is general education, not tax or legal advice; confirm how the rules apply to you with your CPA or attorney.
NNN Investment: Frequently Asked Questions
Are NNN properties a good investment?
They can be, if the price reflects the risk. CoStar says net lease pricing is shaped by lease term, tenant credit, vintage and location. The main risk is rollover: at expiration the rent can reset to market, which can mean downtime and concessions or a rent increase.
What is a good cap rate for an NNN investment in 2026?
There is no single number. CoStar’s national single-tenant net lease retail median was 6.4% over the 12 months through Q1 2026. For sales with at least 10 years of term, sector medians ran from 5.8% for quick-service restaurants to 6.9% for dollar stores; across all lease terms, the West’s regional median was 5.76%.
How much money do you need to buy an NNN property?
There is no fixed minimum. CoStar reports a national 12-month median single-tenant net lease retail sale price of $3.0 million and a median asking price of $2.8 million. Your cash need is the price minus the loan, plus reserves for anything the lease leaves with the landlord.
What is the biggest risk of a triple net investment?
Concentration. One tenant’s credit supports the whole income stream, and when the lease ends you may face downtime, re-leasing cost and a lower market rent. CoStar notes pricing reflects how easily the space can be repurposed for the next tenant.
Why do NNN properties with longer leases sell at lower cap rates?
More contracted years mean rollover risk is further away, so buyers pay more. In CoStar’s Q1 2026 national data, dollar store properties with 15 or more years left traded at a 6.75% median cap rate versus 7.57% with under nine years left.
Is an NNN investment truly passive income?
Mostly, while the lease runs. The tenant pays some or all operating expenses, such as taxes, insurance and maintenance, on top of base rent. But the lease may still leave the roof, structure or parking with the landlord, and lease expiration takes active management.
Can I use a 1031 exchange to buy an NNN property?
Generally yes. Per the IRS, Section 1031 covers real property held for business or investment; replacement property must be identified within 45 days after you transfer the property you give up and received within 180 days, or by your return due date (including extensions) if earlier. Apex is not a law, tax or accounting firm; confirm your exchange with your CPA or attorney.
Underwriting an NNN property?
Get a second set of eyes on the lease and the price. Robert Mendieta Jr., CCIM — Associate Broker · Commercial Division, DRE #01422904 — will review the tenant, the term and the cap rate with you, backed by more than 20 years of commercial real estate experience.
Call Robert: (951) 977-3251Or request a free CRE consult with the form below.
- CoStar Group · Single-Tenant Net Lease Retail National Report, U.S. · Q1 2026 (licensed).
- CoStar Group · Inland Empire Industrial Capital Markets, Industrial Market and Retail Capital Markets Reports, plus Airport Area Industrial Capital Markets and Airport Area Retail Submarket Reports · Q3 2026, dated September 30, 2026 (licensed).
- IRS · Like-kind exchanges: Real estate tax tips · reviewed May 1, 2026.
- IRS · Instructions for Form 8824 (2025) · reviewed April 30, 2026.
Robert Mendieta Jr., CCIM · Associate Broker · Commercial Division · DRE #01422904 · Apex Real Estate Services · 3750 E. Florida Ave Suite A, Hemet, CA 92544 · (951) 977-3251 · robert@apex-res.com. Education only; not investment, legal or tax advice.