A retail co-tenancy clause gives an in-line tenant a remedy, usually reduced rent or a right to terminate, if a named anchor tenant or a stated percentage of the centre's leasable area stops operating. It exists because a shoe store signs a lease at a mall for the foot traffic the department store brings, and if the department store leaves, the shoe store is paying for a location that no longer exists. One anchor closing can cut the rent on twenty in-line leases at once. The clause in each of those leases decides by how much, for how long, and whether the tenant can leave.

This is the clause a mall manager reads the morning the anchor announces closures. Better to have read it before.

What a co-tenancy clause is, and why anchors matter

Retail rent is priced on traffic. An anchor, whether a department store, a grocer, a big-box or a cinema, draws the customers that the smaller tenants sell to; the in-line tenants pay higher rent per square foot than the anchor precisely because they are buying access to the anchor's crowd. A co-tenancy provision is the tenant's protection against paying that premium after the crowd has gone.

There are two kinds, and they answer different questions.

Opening co-tenancy is a development-period risk and ends once the centre stabilises. Operating co-tenancy is the one that matters for the rest of the lease, and it's what the rest of this post covers.

Triggers and remedies: what the clause actually says

A co-tenancy clause has three moving parts: the condition that triggers it, the remedy the tenant gets, and how long the landlord has to fix the problem before the remedy escalates. The combinations are negotiated lease by lease, which is why fourteen in-line leases at one centre can have fourteen different exposures to the same anchor closing.

Two of those rows do most of the financial damage. The rent remedy decides how much revenue the landlord loses each month the condition persists. The cure definition decides how long. A clause that lets the landlord cure with "one or more replacement tenants aggregating not less than 75% of the anchor GLA" can be satisfied by splitting a department store box into a gym, a discount grocer and a furniture store. A clause that requires "a national department store of quality comparable to [Anchor]" may not be curable at all in 2026, because the tenant that would cure it is the one that just left.

Worked example: one anchor closes, fourteen leases respond

The centre: 300,000 sf of gross leasable area. A 90,000 sf department store anchor paying $10.00/sf, or $900,000 a year. Forty in-line tenants; fourteen of them have operating co-tenancy clauses naming the anchor. Those fourteen pay a combined $2,520,000 a year in base rent, an average of $180,000 each.

The anchor announces it will close in ninety days. Here is what the fourteen clauses do, grouped by the remedy each provides.

Add the anchor's own rent, and the centre's annual revenue falls by $1,920,000 from the day the anchor goes dark: $900,000 of anchor rent plus $1,020,000 of co-tenancy reductions, before a single other tenant leaves. On the fourteen affected leases alone, revenue drops 40%. CAM recoveries on the anchor space fall too, and the remaining tenants' pro-rata shares may rise, which starts a second round of correspondence.

Now the timeline. If the landlord signs a replacement for the anchor box within twelve months and that replacement satisfies each lease's cure definition, groups A and C return to full rent when the replacement opens, and group B returns when the replacement opens or when the tenant's sales recover, depending on the drafting. If the replacement doesn't satisfy the cure definition in three of the group A leases, because those three name a department store and the replacement is a fitness operator, those three stay at 50% for the rest of their terms. And if no replacement is signed within twelve months, the two group C tenants can leave, taking $360,000 of rent and leaving two more dark storefronts, which may push the centre below the occupancy threshold in leases that never mentioned the anchor at all.

That cascade is why the exposure has to be modelled on the day the anchor gives notice, not when the first alternate-rent cheque arrives. The four group B leases also make percentage rent the tenant's whole rent, so the sales reporting those tenants provide, covered in our guide to retail sales reporting requirements, becomes the landlord's revenue record for the duration.

Cure periods, and the landlord's decisions inside them

The cure period is the window between the trigger and the tenant's escalation right, typically six to eighteen months. What the landlord does inside it determines whether the reduction is a bad year or a permanent repricing of the centre.

• Read every clause on day one: Not the fourteen you know about; all forty. Occupancy-based triggers in leases that don't name the anchor can fire when the anchor's GLA drops out of the "open and operating" denominator. A tenant that has never mentioned co-tenancy may have a 75% occupancy trigger that the anchor closure alone breaches.

• Confirm the trigger actually fired: Go-dark carve-outs, tenant-in-default conditions and sales-decline conditions all have to be checked before the remedy applies. A tenant that's behind on rent usually can't claim alternate rent. A tenant whose sales rose after the anchor left may not qualify under a sales-condition clause. Apply the clause, not the tenant's reading of it.

• Decide the cure strategy against the cure definitions: If eleven of fourteen leases accept "a retail tenant or tenants occupying not less than 70% of the anchor premises," the box can be split. If eight require a single national retailer, splitting cures six leases and leaves eight at reduced rent. The leasing strategy for the anchor box should be chosen with the cure definitions in front of it, because the replacement that leases fastest may not be the one that restores the most rent.

• Document the cure: When the replacement opens, send each affected tenant a notice stating that the co-tenancy condition is satisfied as of a date, citing the clause, and restore full rent from that date. Tenants don't volunteer to go back to full rent.

• Budget for the sales condition: Group B tenants paying 6% of sales will report sales carefully during the failure period. Audit rights apply.

Tracking co-tenancy exposure across a portfolio in NetSuite

The reason the exposure is a surprise is that co-tenancy lives in a clause on page 31 of each lease, abstracted as "Yes" in a column, if abstracted at all. The fields that matter are the named anchors, the occupancy threshold and how it's measured, the remedy type and amount, the cure period, the cure definition and the tenant-side conditions. Our lease abstraction checklist treats co-tenancy as one of the fields most often abstracted wrongly, and this is why.

When those fields are structured data on the lease record in a property management system on NetSuite, exposure is a report rather than a project. Select an anchor, and the system lists every lease that names it, the remedy and the rent at risk. Select a centre, and it shows the occupancy thresholds against current open-and-operating GLA, so a centre drifting toward a 75% trigger is visible before it crosses. When a trigger fires, the rent schedule on each affected lease switches to the alternate rent from the trigger date, the cure period runs as a critical date with alerts, and the restoration posts from the cure date with the notice on file. Group B tenants' alternate rent runs through the same percentage rent engine as the percentage rent calculation for any other lease.

That's how RIOO's leasing management on NetSuite handles co-tenancy for retail and mall portfolios. Whatever system you use, the test is one question: if an anchor gave notice this afternoon, could you produce by tomorrow morning the list of affected leases, the rent at risk per month, and the cure definition for each? If the answer involves opening forty PDFs, the exposure isn't tracked; it's discovered.

Frequently asked questions

Q1. What is a co-tenancy clause in a retail lease?
A provision that gives a tenant a remedy, usually reduced rent or a termination right, if a named anchor tenant closes or if the occupancy of the shopping centre falls below a stated percentage. It protects the tenant against paying rent priced on foot traffic that an anchor no longer generates.

Q2. What is the difference between opening and operating co-tenancy?
Opening co-tenancy applies at the start of the lease and protects the tenant if the anchor or the centre isn't open when the tenant opens; it ends once the condition is met. Operating co-tenancy applies throughout the term and is triggered if the anchor closes or occupancy falls below the threshold at any point.

Q3. What remedies does a co-tenancy clause provide?
Most commonly a reduction of base rent to a stated percentage, or alternate rent equal to a percentage of the tenant's gross sales in place of base rent, for as long as the condition persists. If the landlord fails to cure within a stated period, often six to eighteen months, the tenant may have a right to terminate the lease.

Q4. How does a landlord cure a co-tenancy failure?
By satisfying the cure definition in the lease, typically by reopening the anchor space with a replacement tenant of the size, type or quality the clause specifies, or by restoring occupancy above the threshold. Cure definitions vary by lease, and a replacement that cures one lease may not cure another at the same centre.

Q5. How much can a co-tenancy clause cost a landlord?
In the example above, one anchor closing at a 300,000 sf centre reduced annual revenue by about $1.9 million: $900,000 of lost anchor rent and $1.02 million of co-tenancy rent reductions across fourteen in-line leases, with two of those leases carrying a termination right if the anchor space wasn't re-let within twelve months.

Related reading

• Lease abstraction checklist: 40 fields to capture from every lease
• Percentage rent calculation: breakpoints and worked examples
• Retail sales reporting requirements in leases: process and audit rights
• Malls and retail property management on RIOO