NNN Lease Free Rent and Rent Commencement: Negotiating the Dark Period

Free rent is not free. That should be obvious, but landlords often treat free rent as a routine negotiating chip — something to hand over to close a deal — without pricing it into their return calculations or structuring it in a way that limits their exposure.

This post covers how free rent and rent commencement provisions actually work in NNN leases, what to watch for when negotiating them, and how to protect yourself from being stuck in a dark period longer than you planned.

What Free Rent Actually Means

In commercial leasing, free rent (sometimes called a rent abatement or rent holiday) refers to a period at the start of a lease during which the tenant occupies the space but pays no base rent. The tenant still pays NNN charges during this period in most deals — taxes, insurance, and CAM — but the base rent is waived.

The rent commencement date is the date on which base rent first becomes payable. It is almost always different from the lease commencement date, which is when the tenant takes possession and when the NNN obligations typically begin.

The gap between lease commencement and rent commencement is the free rent period — sometimes called the dark period, particularly in retail contexts where the tenant may be building out but the space isn't generating income for either party.

Why Tenants Ask for Free Rent

Tenants request free rent for legitimate operational reasons:

• Buildout time — The tenant cannot open for business until construction is complete and a certificate of occupancy is issued. Asking the tenant to pay rent during a period when they cannot operate is commercially unreasonable unless the landlord is delivering the space in turnkey condition.
• Ramp-up period — Even after a grand opening, retail tenants need time to build customer traffic. A free rent period allows them to get to operating cash flow before base rent kicks in.
• Rent-effective rate adjustment — Free rent is a mechanism to lower the effective cost of occupancy over the lease term without lowering the face rent. This matters for both parties: the tenant gets lower effective cost, and the landlord maintains a higher face rent that looks better on the lease comparables.

What Landlords Typically Concede

In a standard negotiation for a new NNN retail lease, a landlord might offer:

• 2–4 months free rent for a short-term buildout
• 4–6 months for a larger tenant improvement allowance deal where the tenant is doing significant construction
• Up to 12 months or longer for anchor tenant deals with major improvement obligations

The number depends heavily on the tenant's credit quality, the length of the lease term, the local market vacancy rate, and what you're delivering. A vanilla box in a high-demand corridor commands different concessions than a second-generation space in a soft market.

The Commencement Date Structure

The most important thing to understand about the rent commencement date is that it should be tied to a specific event or a hard calendar date — not left open-ended.

Common structures:

Fixed calendar date. Rent commences on a specific date regardless of when the tenant completes buildout or opens for business. This protects the landlord but can create problems if permitting delays push the opening past the commencement date.

Lease commencement plus X days. Rent commences a defined number of days after the lease commencement date. This is the most common structure and gives both parties predictability.

Opening date. Rent commences when the tenant opens for business. This is the most tenant-favorable structure and gives you almost no control over timing. If the tenant takes its time with buildout or delays opening, your dark period extends indefinitely. Avoid this structure unless you have strong leverage to include a long-stop date.

Substantial completion plus X days. Rent commences a defined period after the tenant's buildout is substantially complete. Better than opening date, but still dependent on tenant progress.

Protecting Yourself During Negotiation

Tie commencement to a hard outside date. Even if the initial commencement trigger is completion-based, include a long-stop date after which rent commences regardless. If the tenant's buildout takes 18 months when you expected 6, you don't want to be absorbing that entire period.

Specify what "substantially complete" means. If your commencement trigger uses this phrase, define it by reference to a certificate of occupancy, a building inspection sign-off, or specific defined milestones. Vague language creates disputes about whether the clock has started.

Separate base rent and NNN during free rent. The free rent period should waive base rent only. Taxes, insurance, and CAM should remain payable from the lease commencement date. This is standard but should be explicit in the lease.

Address early termination during the free rent period. If the tenant defaults and the lease is terminated before rent commencement, you want the lease to clearly state that the free rent is forfeited and you are entitled to damages for the dark period.

Make free rent conditional on no default. Some landlords include a provision that the free rent period is only available if the tenant is not in default during or at the time of the abatement. If the tenant defaults and the lease is terminated, the landlord can recover the free rent value as damages.

When Free Rent Creates Problems

Free rent becomes a problem when landlords fail to plan for the cash flow gap. A six-month dark period on a $25,000 per month base rent deal is $150,000 in unrealized income. If your mortgage covenants require a certain debt service coverage ratio, a long free rent period may create compliance issues during the buildout phase.

Model the free rent period into your underwriting before agreeing to it, not after. Know your minimum rent commencement date to meet debt service and include that as a floor when negotiating.

Tracking Free Rent in Your Lease Records

Free rent periods create an unusual entry in the lease record: a tenant who has taken possession and who has NNN obligations but no base rent liability yet. This needs to be clearly reflected in your property management system so you are not chasing a base rent payment that legitimately isn't due yet, and so your rent roll accurately reflects the economic status of each space.

Date-stamp both the lease commencement date and the rent commencement date separately, and track the free rent end date as its own milestone. Conflating these creates ledger errors that are annoying to untangle later.