Dark Store Co Tenancy Cost Calculator

Dark stores trigger cotenancy even while paying. This calculator sizes.

Small tenants triggered

Avg small tenant annual rent

Small tenant abatement %

Go-dark duration months

Anchor annual rent still paid

Net NOI loss over dark period

$975,000

Small tenant abatement loss

$975,000

Anchor rent offset

$1,050,000

How the math works

Abatement loss = tenants × rent × % × months/12. Anchor continues paying = offset on paper. Net NOI loss = abatement (anchor rent continues and is needed baseline).

20 shops × $65k × 50% × 1.5 yr = $975k abatement. Anchor keeps paying $1.05M. Net NOI decline from base = ~$975k. Large hit despite anchor rent continuing.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Dark Store Co Tenancy Cost Calculator is built to give a quick, browser-based estimate for dark store co tenancy cost. Dark stores trigger cotenancy even while paying. This calculator sizes. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the dark store co tenancy cost result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this dark store co tenancy cost estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter small tenant count.
Enter avg small tenant rent.
Enter cotenancy abatement %.
Enter go-dark duration months.
Enter anchor rent still paid.
Read net NOI loss.

Frequently Asked Questions

Go-dark clauses?

Anchor tenant may keep paying rent but stop operating (dark). Small shops' cotenancy clauses often trigger on dark as well as vacancy, meaning landlord loses small-shop NOI even while anchor rent continues. Specifically lethal for box stores closing stores.

Why go dark?

Chain decision to close underperforming store while lease term remains. Easier to pay rent than negotiate termination. Often signals coming bankruptcy or corporate restructuring. Co-tenancy exposure often large enough that landlord initiates negotiation.

Landlord remedies?

Negotiate continuous operations covenant upfront. Build go-dark penalty or recapture right into lease. Broker subtenants. Swap anchor for replacement (rent gap vs cotenancy cost tradeoff). Fight through estoppel or assignment denial on transfers to intent-to-dark occupiers.