Go Dark Co-Tenancy Damage Calculator

Co-tenancy clauses trigger on anchor go-dark. This calculator sizes damage.

Base rent monthly

Dark reduction %

Dark months

Replacement rent %

Total rent relief

$171,000

Monthly relief

$19,000

Relief % of contract

50.0%

How the math works

Monthly relief = base × reduction %. Total = monthly × dark months. Replacement rent % can offset.

Go-dark events in retail centers can generate $150-500k of rent relief on a single tenant's lease during a 12-month anchor vacancy. Landlords should model this explicitly when underwriting anchor backfill scenarios — failure to replace within trigger window compounds relief quickly.

How to Use

Enter base rent monthly.
Enter go-dark reduction % and duration.
Enter anchor replacement months.
Enter full anchor replacement months.
Read co-tenancy rent relief.

Frequently Asked Questions

Co-tenancy types?

Initial: anchor must open before tenant rent starts. Ongoing: anchor must stay open or rent reduces. Named tenants: specific anchors or class of anchor. Occupancy threshold: minimum % of center open. Each triggers different relief.

Reduction mechanics?

Typical: 50% rent reduction or alternate rent (% of sales, often 2-6%). After 12 months dark with no replacement, tenant may terminate. Regional variations; retail-heavy coastal markets allow stronger relief than Midwest.

Replacement tenant?

Similar class, similar size, with some brand recognition. Named or comparable tenant requirement. Replacement must be approved or meet objective standards. Time limits 180-365 days common before tenant termination right.