NNN Properties: How Triple Net Lease Investing Works

What is a NNN property?

A NNN property, or triple net lease property, is a commercial building leased to a single tenant under a lease that makes the tenant responsible for the three main operating expenses, property taxes, building insurance, and maintenance, in addition to base rent. The landlord receives rent that is net of those costs, which is where the term comes from. Typical NNN tenants are national retailers, pharmacies, quick-service restaurants, dollar stores, auto parts stores, banks, medical users, and industrial distribution operators.

Investors buy NNN properties for predictable income with minimal management. In exchange, they accept a lower yield than they would get from a multi-tenant or value-add property, and they concentrate their risk in a single tenant and a single lease.

Gross, net, double net, triple net, and absolute net

"Net lease" is a spectrum. Where a property falls on it changes both your return and your responsibilities.

• Gross lease. Tenant pays rent; landlord pays all operating expenses. Common in office.
• Modified gross. Expenses are shared, often with the tenant paying increases over a base year.
• Single net (N). Tenant pays rent plus property taxes.
• Double net (NN). Tenant pays rent, taxes, and insurance. The landlord remains responsible for structure, roof, and sometimes parking lot and HVAC. Many "NNN" listings are really NN; read the lease.
• Triple net (NNN). Tenant pays rent, taxes, insurance, and maintenance. Landlord responsibilities are limited and spelled out, often roof and structure.
• Absolute NNN (bondable). Tenant is responsible for everything, including roof and structure, and usually cannot terminate for casualty or condemnation. The landlord has no obligations other than to deliver quiet enjoyment.
• Ground lease. The tenant owns the building and leases the land. Rent is lower, but the landlord receives the improvements at lease expiration and the tenant's investment in its own building makes default less likely.

The difference between NN and absolute NNN on a 20-year lease can be a six-figure roof replacement. Price it accordingly.

Why investors buy NNN properties

• Passive income. No tenant calls, no leasing, no capital expenditure surprises on an absolute net lease.
• Long-term, contractual cash flow. Initial lease terms of 10 to 25 years, often with multiple 5-year renewal options.
• Credit-backed rent. Many leases are guaranteed by an investment-grade corporate parent, which turns the rent into something closer to a corporate bond secured by real estate.
• Financing. Lenders like long-term credit leases, which supports leverage and non-recourse structures.
• 1031 exchange fit. Deep inventory and fast due diligence make NNN assets the default replacement property for investors exiting management-heavy assets. See our 1031 guide.
• Estate planning. Simple to hold in trusts and LLCs and simple to pass to heirs who do not want to run a property.

Underwriting the tenant

The tenant is the first thing to underwrite, because the lease is only as good as the company that signed it.

Who actually signed the lease?

A lease with a national brand on the sign may be signed by the corporate parent, a regional subsidiary, or an individual franchisee operating five stores. Those are three very different credits. Confirm the lease signatory and any guarantor, and whether the guaranty is full, limited, or burns off over time.

Investment grade versus non-rated

Public companies rated BBB- or better by S&P (Baa3 by Moody's) are investment grade. Their leases trade at the lowest cap rates. Non-rated and franchisee tenants can be excellent credits too, but you have to do the work: request financials, review store-level sales where the lease provides them, and understand the operator's history and unit count.

Store-level performance

A strong parent will still close an underperforming store at the first option. Where possible, obtain sales reports or rent-to-sales ratios. For restaurants, a rent-to-sales ratio under roughly 8 to 10 percent is healthy; for pharmacies and grocers the ratios are lower. A corporate tenant paying rent at a closed store still pays, but you have lost the renewal and the resale premium.

Industry risk

Underwrite the sector, not just the tenant. Pharmacies and some casual-dining chains have closed hundreds of locations in recent years; discount retailers and quick-service drive-thrus have expanded. The lease pays regardless, but tenant and sector health determine what the property is worth in year 8 when you want to sell or refinance.

Cap rates and how NNN properties are priced

A capitalization rate is the property's annual net operating income divided by its price. A property with $100,000 of NNN rent priced at $1,666,667 trades at a 6.0 percent cap rate. For NNN properties, the cap rate is driven by five factors:

1. Tenant credit. Investment-grade credit trades tightest.
2. Remaining lease term. Each year of primary term that burns off widens the cap rate, and below 10 years financing becomes harder and the buyer pool shrinks.
3. Rent escalations. Leases with 10 percent bumps every five years, or 1 to 2 percent annual increases, are worth more than flat leases, especially during inflation.
4. Real estate quality. A corner pad on a major arterial in a growing trade area is worth more than the same tenant in a declining location.
5. Interest rates. Net lease cap rates track long-term Treasury yields plus a spread. When rates rise, cap rates follow with a lag.

Secondary and tertiary markets like Albuquerque, Santa Fe, Las Cruces, Tucson, and El Paso typically trade 25 to 75 basis points wider than Phoenix, Denver, or Southern California for the same tenant and term. For an income investor, that spread is a feature. For an exit, it means pricing to the market you are in rather than to a coastal comp.

Our firm's family office portfolio closed at a 7.4 percent weighted average cap rate across five investment-grade NNN assets in three Southwest markets, which illustrates the yield available to patient buyers who can source off-market.

Lease terms that matter most

• Primary term and options. How many years remain, and how many renewal options exist at what rent.
• Rent escalations. Amount, frequency, and whether options continue the escalations or reset to market.
• Landlord obligations. Exactly what the landlord must maintain: roof, structure, parking lot, HVAC replacement. "NNN" in a marketing flyer is not a lease term.
• Guaranty. Who guarantees, for how long, and whether it covers the option periods.
• Assignment and subletting. Can the tenant assign the lease to a weaker operator and be released?
• Termination rights. Early termination options, co-tenancy clauses, and casualty or condemnation provisions.
• Right of first refusal. A tenant ROFR on sale can chill your buyer pool and should be understood before you buy.
• Estoppel and SNDA. Your lender will require an estoppel certificate from the tenant confirming the lease terms and no defaults.

Underwriting the real estate

The question every NNN buyer should answer before closing is: if this tenant left tomorrow, what would I do with the building and what would it rent for? A former pharmacy on a hard corner with 60 parking spaces has many uses. A purpose-built restaurant with a drive-thru has fewer, but drive-thru sites are scarce and valuable. A single-purpose building on a secondary road may have almost no re-tenanting value.

• Traffic counts, visibility, access, and signalized intersections.
• Trade area demographics and whether the population and income are growing.
• Co-tenancy in the surrounding area: anchors, competing operators, vacancies.
• Replacement rent: what a new tenant would pay per square foot compared to the current rent. A tenant paying far above market is a resale risk.
• Land value as a floor. In growing Albuquerque corridors, the dirt under a 1990s building can be worth a meaningful share of the price.

NNN due diligence checklist

1. Full lease, all amendments, guaranty, and any side letters.
2. Tenant estoppel certificate.
3. Tenant and guarantor financials or credit ratings; store sales if available.
4. Rent roll and 24 months of payment history.
5. Title commitment, survey (ALTA), and review of easements, CC&Rs, and reciprocal easement agreements.
6. Phase I environmental site assessment, and Phase II if indicated. Gas stations, dry cleaners, and auto uses deserve extra care.
7. Property condition report, including roof and HVAC age, even on an absolute NNN lease, because condition affects renewal odds and resale.
8. Zoning verification letter and any pending municipal changes.
9. Property tax history and reassessment risk at sale. In New Mexico, taxable value is one-third of assessed value times the local mill rate; confirm with the county assessor how the sale will affect assessment.
10. Insurance certificates naming the landlord as additional insured.
11. Lease-required notices, consents, and any right of first refusal process.

Financing NNN properties

Lenders underwrite the lease as much as the real estate. Investment-grade tenants with 10 or more years of remaining term qualify for the best terms, including life company and CMBS loans and, for the strongest credits, non-recourse structures. Typical leverage is 55 to 70 percent loan-to-value; typical amortization is 25 years. Loans on properties with fewer than ten years of term are harder to place, often require shorter amortization or recourse, and shrink the buyer pool, which is why short-term NNN assets are frequently sold to all-cash buyers, as in our Circle K case study.

In a 1031 exchange, confirm financing feasibility on each identified property before day 45. A loan that falls through on day 150 can end the exchange.

NNN investing in Albuquerque and the Southwest

Albuquerque's NNN inventory is concentrated along its major retail corridors: Coors Boulevard and the Westside, Paseo del Norte and the Northeast Heights, Central Avenue, Montgomery and San Mateo, the Uptown district, and the Rio Rancho growth corridors. Typical single-tenant assets include quick-service restaurants, dollar stores, auto parts, pharmacies, banks, medical and dialysis clinics, and car washes. Industrial net lease, including distribution and manufacturing buildings near the Sunport and along I-25 and I-40, has grown with the logistics and film industries.

The Southwest offers three advantages for net lease investors: cap rates wider than coastal markets for identical tenants, steady population growth in Phoenix, Tucson, El Paso, and the Albuquerque metro, and no state real estate transfer tax in New Mexico. The trade-off is thinner liquidity than primary markets, which rewards buyers and sellers who work with brokers that have relationships with the regional and national net lease buyer pool. Read our Albuquerque commercial real estate market guide for submarket detail.

NNN properties and 1031 exchanges

Investors who sell apartments, self-managed retail, or land commonly exchange into NNN property to defer tax and exit management at the same time. The national inventory makes it practical to identify three qualifying properties inside 45 days, and a single-tenant asset with a corporate lease can be fully diligenced in 30 to 45 days. Because prices span a wide range, it is also possible to match exchange value closely and avoid boot, or to split an exchange across two or three properties for diversification.

The complete 1031 guide covers the rules in detail, and the deadline calculator gives you your dates. If you are early in the process, the single most valuable thing you can do is begin underwriting NNN candidates before your relinquished property goes under contract.

This is general information, not tax or legal advice. Confirm details with your CPA, attorney, and qualified intermediary before acting.