Renewal Options in Net Lease: Notice Periods, FMV Pricing, and the Trap

TL;DR

A renewal option gives the tenant the right (not the obligation) to extend the lease beyond the initial term. Two things determine whether the option creates real value or is a pricing trap: how the renewal rent is set (fixed step-up vs market) and the notice period (when the tenant must commit). Most OMs treat the existence of options as automatic upside; the underwriting reality is more nuanced. Fixed-step renewals are more valuable to the landlord; FMV renewals are less valuable than they look because tenants will only exercise if it's a good deal for the tenant.

How Renewal Options Are Priced (Three Common Structures)

Structure 1: Fixed-Bump Renewal

The lease specifies the renewal rent in dollar terms, often with a CPI floor and a hard cap. Example:

"Tenant shall have three (3) options to extend the Term for additional periods of five (5) years each, at base rents of $30.00, $32.50, and $35.00 per square foot respectively."

Underwriting impact: The renewal cash flow is contractually determined. You can model it like contractual rent — discount it back at your equity discount rate, and the value flows directly into the residual.

Caveat: the fixed renewal rent may be below market by the time the option date arrives, especially in inflationary periods. From the landlord's perspective, the tenant exercising a below-market option is the worst case (you lose upside without losing the tenant). But it's still better than vacancy.

Structure 2: CPI / Index-Adjusted Renewal

Renewal rent steps up by CPI (or a defined index) over the prior period's rent. Example:

"Renewal rent shall equal the base rent payable in the final year of the prior term, multiplied by (1 + cumulative CPI growth from year 1 of the original term), capped at 12% per renewal period."

Underwriting impact: less predictable than a fixed bump but more market-aligned. The CPI floor and cap matter — the tighter the band, the more landlord-favorable.

Structure 3: Fair Market Value (FMV) Renewal

The renewal rent is set at "fair market rent for similar properties" at the time of renewal. The lease usually specifies:

• A negotiation period (e.g., 30 days for landlord and tenant to agree)
• An arbitration / appraisal mechanism if they don't agree (typically a three-appraiser process: each party picks one, the two appraisers pick a third, the third's value controls)
• A floor of "no less than the rent in the final year of the prior term"

Underwriting impact: This is where it gets tricky. See below.

The FMV Trap

FMV renewal options are often presented as "tenant-favorable" (the tenant doesn't have to overpay if market has softened) but also landlord-favorable (the landlord captures upside if market has firmed). In practice, the option asymmetry favors the tenant in a way most OMs don't acknowledge.

The mechanics of the trap:

A tenant will only exercise an FMV renewal if FMV is at or below the alternative cost of relocating. Relocation costs include:

• New lease tenant improvements (TI)
• Moving expenses
• Business disruption
• New rent at the new location

For an established retailer, this can be $50-150 per square foot in TI alone, plus 12-18 months of operating disruption. So the tenant has a meaningful "stay premium" — they'll exercise the FMV renewal even if FMV is somewhat above what they'd negotiate from scratch.

But here's the trap: if FMV is materially above the prior rent, the tenant may walk anyway, because they can negotiate a build-to-suit or a competitor's vacancy at lower-cost terms. So the landlord doesn't get to capture the full FMV upside.

The asymmetry: the landlord absorbs the downside (tenant stays only if FMV is favorable to them) without capturing the full upside (tenant leaves if FMV is too unfavorable to them).

Underwriting implication: In a residual value calculation, an FMV renewal is worth less than a fixed-bump renewal at the same expected rent, even if you assume the tenant exercises. Some underwriters apply a 10-25% discount to the cash flows in an FMV renewal period to reflect this asymmetry — particularly when the residual is being valued at a tighter cap rate.

Notice Periods Matter More Than You Think

Most renewal options require the tenant to give the landlord notice of exercise some months in advance — typically 6, 9, 12, or 18 months before the end of the prior term.

The longer the notice period, the more the option is worth to the landlord. Reasons:

1. Re-leasing time: if the tenant declines to exercise with 12+ months of notice, the landlord has time to market and lease the space. With 90 days of notice, the landlord faces a near-certain vacancy gap.

1. Refinancing certainty: lenders care about renewal exercises. A signed renewal 12-18 months before the option date is a clean refinancing data point. A 90-day-notice renewal is barely useful for refinancing the loan that matures coterminously.

1. Appraisal certainty: if you're underwriting a sale 18 months before lease expiration, a long-notice renewal that's already been declined or exercised gives you certainty. A short-notice option that's still in the air leaves the cap rate compressed (or expanded) by buyer uncertainty.

The practical question: when is the renewal notice deadline relative to the lease expiration? If it's less than 6 months out, structurally that's a notice provision worth pushing back on at lease signing.

How to Underwrite Renewal Options in a Residual

A common underwriting practice is to "include the renewal option in NOI" for purposes of the reversion cap rate calculation. This is sometimes wrong.

The correct framework:

1. Probability-weight the exercise. What's the realistic probability the tenant will exercise the option, given the renewal rent vs. likely FMV at the option date?

- Fixed-bump well below likely market: 80-95% exercise probability

- Fixed-bump at or above likely market: 30-50% exercise probability

- FMV with tight bands: 50-70% exercise probability

- FMV with material upside risk: 30-50% exercise probability

1. For the residual cap rate, use the term-and-residual approach:

- Cash flows during the contractual term: discount at your debt-free IRR (or whatever your equity model uses)

- Residual at end of contractual term: cap the year-N+1 NOI at a reversion cap rate that reflects whether the tenant has renewed or vacated

1. Two scenarios:

- Tenant exercises: Year N+1 NOI = renewal rent. Reversion cap rate = current cap rate + 25-50 bps (to reflect the shorter remaining term post-exercise)

- Tenant vacates: Year N+1 NOI = market rent for new tenant × (1 - downtime % - lease-up costs). Reversion cap rate = current cap rate + 100-200 bps (vacancy risk)

1. Blend. Weight the two scenarios by your exercise probability.

This gives you a more honest residual value than just "assume they renew at the option rent."

What the OM Usually Says vs What You Should Verify

OMs commonly include language like "Tenant has four (4) renewal options of five (5) years each, providing 35 years of total tenant control."

Things to verify in the lease:

1. Are the renewal rents specified, or FMV? OMs sometimes lump fixed-bump and FMV options together as "renewal options" without the distinction.

1. What's the notice period? A 6-month notice on a 5-year option is very different from an 18-month notice. Both are "renewal options."

1. Are there conditions to exercise? Some leases require the tenant to be "not in default" at the time of exercise. This is largely cosmetic for credit tenants, but for marginal tenants it's a real out for the landlord (the tenant exercises, the landlord refuses on a technical default, and the lease ends).

1. What happens between the prior term and the renewal term? Most leases have language stating the renewal is on the same terms as the prior term except for rent. But sometimes there are gotchas: a CAM cap that resets, an exclusive use clause that lapses, an option that requires a re-execution of the document (which gives the tenant another negotiation opening).

A Note on "Bumps Within the Renewal Term"

A renewal "term" usually has its own internal rent schedule. Common structures:

• Flat for the renewal term: tenant pays the renewal rent unchanged for all 5 (or 10) years
• Annual CPI bumps within the renewal term: more market-aligned; better for landlord
• Mid-term step-up: e.g., rent goes from $30 in year 1 of renewal to $32.50 in year 3

These structural details meaningfully affect the residual NOI calculation and should be modeled explicitly. A "5-year renewal at $30/sf" is very different from a "5-year renewal at $30/sf with 2% annual bumps."

Summary

Renewal options are real but conditional value. Fixed-bump options that are below market at the renewal date have a high exercise probability and should be modeled as contractual cash flows. FMV options have an asymmetric payoff that favors the tenant — discount accordingly. Notice periods determine how useful the option is for refinancing and re-leasing logistics.

For brokers, the most important habit is to never underwrite renewal options without reading the actual lease clause. The OM summary will tell you the term and the count, but not the pricing mechanism, the notice deadline, or the conditions to exercise. Those are the variables that determine the option's actual underwriting value.