The Importance of Due Diligence in Partially Occupied Commercial Properties

Investing in partially occupied commercial real estate can be a smart move—offering both immediate income from current tenants and the opportunity to boost value through strategic lease-up. But beneath the surface, these properties often carry layers of risk and complexity that can impact everything from financing to long-term asset performance.

That’s why due diligence isn’t just important—it’s essential.

 

Why Due Diligence Is Different for Partially Occupied Assets

Unlike fully stabilized or completely vacant properties, partially occupied assets live in the middle. They may appear to generate cash flow, but that revenue could be temporary, overstated, or dependent on weak leases. At the same time, the vacant portions may require significant investment or repositioning to attract tenants.

To uncover the real picture, investors must dig deeper—and earlier—into both the in-place performance and the potential upside of the asset.

  What to Look for During Due Diligence

Here are six critical areas that we at CommercialGrp evaluate closely when analyzing partially occupied industrial or commercial buildings:

 1. Tenant Health and Lease Strength

Just because a space is occupied doesn’t mean it’s stable.

  • Are the tenants financially healthy?

  • When do their leases expire?

  • Are there renewal or termination clauses you need to know about?

We also look at payment history, lease rates vs. market rates, and how much leverage each tenant has on the asset’s NOI.

2. Vacancy Risk and Re-leasing Viability

What’s driving the vacancy?

  • How long has the space been unoccupied?

  • Is it a layout, visibility, or functionality issue?

  • Is there demand in the submarket for similar space?

Understanding whether the space is lease-ready or needs redesign, capital improvements, or rezoning is key to estimating cost and time-to-stabilization.

3. Capital Expenditures (CapEx)

Partially occupied buildings often come with deferred maintenance.

You’ll want to investigate:

  • Roof condition

  • HVAC, plumbing, and electrical systems

  • ADA or code compliance

  • Potential tenant improvement (TI) allowances needed to fill vacant space

Overlooking CapEx can erode returns quickly.

4. Submarket Conditions

Due diligence doesn’t stop at the property line.

Look at:

  • Competing vacancy in the area

     

  • Recent leasing activity

     

  • Rent trends and absorption rates

     

  • Infrastructure and access (especially for industrial)

     

A great building in a soft market may take longer to lease than expected—plan accordingly.

5. Zoning and Use Flexibility

Vacant space may only be valuable if it can be adapted to tenant demand.

Verify:

  • Current and allowable zoning uses

  • Restrictions on subdividing or expanding

  • Parking and access requirements

  • Permit timelines for any needed change

6. Cash Flow Sensitivity

Lenders and buyers often underestimate the sensitivity of a partially occupied property’s performance.

Build multiple models:

  • With and without lease-up

  • Best-case vs. worst-case rent assumptions

  • Absorption over 12, 18, and 24 months

Stress-testing your pro forma against real-world conditions is vital for realistic valuations and financing strategy.

Opportunity + Risk = Strategy

At CommercialGrp, we believe that due diligence should not be a checkbox—it should be a blueprint for strategy. Every partially occupied property has a story, and our job is to uncover it before closing.

We work with investors, developers, and occupiers to evaluate not only what’s there—but what’s possible.

Thinking About Acquiring a Partially Occupied Industrial Asset?

Our team at CommercialGrp specializes in identifying high-potential industrial properties between 15,000 and 120,000 square feet throughout the Northeastern U.S. We bring the experience, insight, and local knowledge you need to make informed, confident decisions—before and after acquisition.

📩 Connect with us today to learn more or explore active opportunities.