# Due Diligence Disaster: What Bad Leases Cost You in a Property Acquisition Blog | LeasePilot

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# Due Diligence Disaster: What Bad Leases Cost You in a Property Acquisition

How lease quality affects property valuations and transaction risk in CRE acquisitions.

![David Saltman](/_next/image?url=%2Fleadership%2Fdavid-saltman.jpg&w=3840&q=75&dpl=dpl_2uqrzvFtdfjJy2rKqbPgTzBd5aYQ)

David Saltman

CEO, Former CRE Attorney

June 14, 20247 min readCopy link

TL;DR

Stories buyers don't want to live: co-tenancy letting an anchor reduce rent 40%, assignment clauses threatening deal timelines, environmental indemnification leaving new owners liable. Lease quality is transaction risk.

§ 01

## [The Due Diligence Moment](#the-due-diligence-moment)

You're acquiring a retail center. 15 tenants. $50M purchase price. The offering memorandum shows strong NOI and stable tenancy.

Then your attorney starts reading the leases.

§ 02

## [Real Due Diligence Discoveries](#real-due-diligence-discoveries)

### The Co-Tenancy Time Bomb

**The Finding**: The grocery anchor has a co-tenancy provision. If two of the five named co-tenants cease operations, the anchor can reduce rent by 40% or terminate.

**The Math**:

-   Anchor pays $500,000/year
-   40% reduction = $200,000/year lost revenue
-   At 7% cap rate = $2.86M reduction in value

**The Problem**: One of the named co-tenants is struggling. Another has 18 months left on their lease. The "stable tenancy" has a structural risk embedded in it.

### The Assignment Ambush

**The Finding**: The acquisition requires lender consent. The lease says landlord consent to assignment can be "withheld in landlord's sole discretion."

**The Problem**: This is a change-of-control situation. Does the sale trigger the assignment provision? Does the buyer need every tenant's consent? What if one tenant says no?

**The Delay**: Three months of lease review and tenant negotiations that wasn't in the closing timeline.

### The Environmental Inheritance

**The Finding**: Industrial property. Former tenant operated a dry cleaner. Lease indemnification is limited to "contamination caused by tenant during the term."

**The Problem**: Contamination exists. Was it caused by this tenant, or the one before? Lease doesn't require baseline assessment. No way to prove allocation. New owner inherits cleanup liability.

**The Cost**: $1.2M remediation, entirely on the buyer.

### The Expansion Option Surprise

**The Finding**: Largest tenant has an expansion option covering the adjacent 10,000 SF suite, currently occupied by the second-largest tenant paying above-market rent.

**The Problem**: If the anchor exercises the expansion option, the second tenant must relocate (at landlord's cost per their lease) or vacate. Either way, $400K in disruption costs not reflected in the pro forma.

§ 03

## [Categories of Lease Risk](#categories-of-lease-risk)

### Structural NOI Risk

-   Co-tenancy provisions
-   Exclusive use clauses that prevent desired tenant mix
-   Rent reduction triggers
-   Termination rights

### Operational Risk

-   Unclear expense pass-through methodology
-   Ambiguous maintenance responsibilities
-   Missing or inadequate insurance requirements
-   Inconsistent calculation methods across tenants

### Transaction Risk

-   Assignment and change-of-control provisions
-   SNDA requirements that need lender negotiation
-   Estoppel obligations that may surface claims
-   Options that affect property plans

### Future Flexibility Risk

-   Long-term options at below-market rates
-   Expansion rights that limit leasing flexibility
-   Restrictions on property modifications
-   Use restrictions that limit redevelopment

§ 04

## [The Value Impact](#the-value-impact)

### Direct Valuation Adjustment

Bad lease provisions translate directly to reduced value:

Risk Factor

Impact

At 7% Cap Rate

Co-tenancy exposure

\-$150K NOI

\-$2.1M value

Below-market option

\-$50K/yr for 10 yrs

\-$715K value

Remediation liability

$1M estimate

\-$1M value

**Total**

**\-$3.8M**

### Deal Friction Costs

Beyond valuation, bad leases create transaction costs:

-   Extended due diligence timeline
-   Legal fees for lease analysis
-   Renegotiation with tenants
-   Lender requirements for lease amendments
-   Insurance or escrow for identified risks

§ 05

## [Seller-Side Implications](#seller-side-implications)

If you're selling, lease quality affects:

### Marketing Position

Clean leases with standard provisions signal professional management. Problem leases raise questions about what else wasn't managed well.

### Buyer Pool

Sophisticated buyers with aggressive timelines skip properties with messy leases. Your buyer pool shrinks to those willing to do the work, and they'll want a discount.

### Valuation

Every identified risk becomes a negotiating point. Even risks you think are manageable will be used to reduce price.

### Timeline

Lease issues extend due diligence. Extended diligence means more time for markets to shift, financing to change, or the buyer to find reasons to renegotiate.

§ 06

## [The Proactive Approach](#the-proactive-approach)

### For Buyers

-   Budget for comprehensive lease review (not just abstracts)
-   Identify material provisions before LOI
-   Build lease risk adjustment into valuation model
-   Plan for tenant discussions during diligence

### For Sellers

-   Audit leases before marketing
-   Address known issues proactively
-   Prepare tenant estoppels early
-   Create a lease summary that acknowledges, rather than hides, unusual provisions

* * *

Lease quality isn't just an operational issue. It's a transaction issue. The time to discover what's in your leases is before you're under LOI, whether you're buying or selling.

§ Adjacent reading

## More from the ledger

[§ 01FEB 07, 2024

Market Context

### The Office Lease Is Being Rewritten: Flex Terms, Contraction Rights, and the New Normal

David Saltman8 MIN READ

Read →](/blog/office-lease-being-rewritten)

[§ 02FEB 18, 2025

Lease Lifecycle

### Amendments Are Where the Real Risk Lives

David Saltman6 MIN READ

Read →](/blog/amendments-where-real-risk-lives)

[§ 03NOV 01, 2024

Compliance & Risk

### Leasing Across 30 States: The Compliance Problem Nobody Talks About

David Saltman7 MIN READ

Read →](/blog/leasing-across-30-states-compliance)

§ See it in practice

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