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Navigating Commercial Real Estate Due Diligence

Mockaitis Law Group LLC May 2, 2025

When purchasing or leasing commercial real estate, due diligence is one of the most critical phases in the process. The importance of this stage cannot be overstated, as it allows buyers or tenants to evaluate potential risks and understand the property's condition before making any commitments. 

When you connect with me, Attorney Romas Mockaitis, I can help you through the process with ease and professionalism. Given the financial and legal implications of such transactions, careful planning and execution are vital to making informed decisions for commercial real estate in Oswego, Illinois. Partner with me at Mockaitis Law Group LLC for experienced counsel.

What Is Due Diligence in Commercial Real Estate?

Due diligence refers to the period in which a buyer or lessee thoroughly investigates a property. The process includes reviewing documents, inspecting the physical condition, and evaluating legal and financial issues associated with the property. 

Commercial real estate transactions, especially in Illinois, require the involvement of a real estate attorney to make sure that the process goes smoothly and all potential risks are considered. The goal of due diligence is to uncover any hidden issues that may affect the value of the property or its usability. 

If a commercial real estate deal is completed without proper due diligence, it could result in future legal complications or financial losses. In Illinois, the due diligence process can be more rigorous due to the state's specific laws and regulations regarding property transactions.

Steps in the Due Diligence Process

The due diligence process involves several key steps, each requiring a keen eye for detail. Some aspects of the process may differ depending on the nature of the property, the buyer’s needs, and the location within Illinois. However, the general approach remains consistent.

1. Property Title and Ownership Verification

Before diving into any agreements, the first step in due diligence is to verify the property’s title. This process involves confirming that the seller holds legal ownership of the property and that there are no conflicting claims. 

A real estate attorney will often conduct a title search to check that the property’s title is clear. In Illinois, this is crucial, as any issues with title ownership could result in significant delays or even the cancellation of the transaction.

It’s also important to check for any liens, encumbrances, or outstanding debts attached to the property. These financial obligations could become the responsibility of the buyer after the sale, so it's important to identify them early in the process.

2. Inspection of the Property

Physical inspections are a cornerstone of due diligence. Whether you're purchasing office space, retail space, or an industrial facility, understanding the property's physical condition is essential. A detailed inspection covers various aspects, such as the structure, plumbing, electrical systems, HVAC, and environmental factors like mold or asbestos.

Hiring specialized inspectors or working with an experienced real estate attorney can help identify potential problems that might affect the value or functionality of the property. For example, an environmental inspection is crucial in Illinois, as certain locations are subject to stricter regulations related to environmental protection.

3. Lease and Contract Review

For those leasing commercial property, reviewing the lease agreement is one of the most important steps in due diligence. A lease is a legally binding document that outlines the terms of occupancy and any obligations of both the landlord and the tenant. A real estate attorney should examine the lease in detail to make sure that the terms are fair and in line with your needs.

The lease must comply with both local and state laws, so it's vital to work with a real estate attorney who is familiar with the state's landlord-tenant regulations. Areas to focus on include rent escalations, maintenance responsibilities, termination clauses, and dispute resolution procedures.

4. Zoning and Land Use Considerations

Zoning laws determine how a piece of property can be used. Illinois has strict zoning codes that govern everything from building heights to the types of businesses that can operate in a given area. Before proceeding with a purchase or lease, you must confirm that the property is zoned for your intended use.

A real estate attorney can help you interpret local zoning laws and make sure that the property’s zoning aligns with your business requirements. If there are any zoning issues, such as a need for a zoning variance, the attorney can assist in addressing them before moving forward.

5. Financial and Tax Implications

Another key part of due diligence is evaluating the financial aspects of the real estate transaction. For buyers, this means reviewing the purchase price, current market value, and any potential for future appreciation or depreciation. 

It's also important to assess the property’s income-generating potential, such as rental income or potential cost savings from energy-efficient systems. Taxes also play a major role in this evaluation. In Illinois, property taxes can significantly impact the overall cost of ownership. 

A real estate attorney can help you understand the local property tax laws and any exemptions that may apply to your situation. Buyers should also confirm if any outstanding tax liens exist, as these will need to be resolved before the transaction can proceed.

6. Environmental Assessments

Certain properties may be subject to environmental concerns, such as contamination from hazardous substances. Illinois has a robust set of regulations to protect against environmental hazards, particularly in areas with industrial or commercial history. 

Buyers should conduct environmental assessments to identify any risks associated with the property, such as soil contamination, groundwater pollution, or asbestos presence.

An environmental consultant will typically handle this part of the due diligence process, but it's essential to have a real estate attorney involved to review reports and make sure that legal obligations regarding remediation are understood and manageable.

7. Review of Local Ordinances and Building Codes

Local ordinances and building codes can vary from city to city and county to county in Illinois. Therefore, it’s critical to review any restrictions or building codes that may affect your intended use of the property. This includes regulations on renovations, expansions, or any specific rules regarding signage or external modifications.

Working with a real estate attorney who is well-versed in local laws can help identify potential roadblocks in terms of compliance. Having this knowledge in advance can save considerable time and money.

8. Contractual and Closing Details

Once all inspections and assessments are completed, the buyer can move toward finalizing the transaction. However, before signing any contract, the buyer or lessee must carefully review the terms of the agreement. 

A real estate attorney should be involved in this review to confirm that all terms are in line with prior agreements and that no unfavorable conditions are hidden in the fine print.

Additionally, a real estate attorney will assist with the closing process, which involves the exchange of funds, transfer of ownership, and any final legal formalities. This makes sure that all steps are followed correctly according to Illinois law.

Common Pitfalls in Due Diligence

Even the most thorough due diligence process can sometimes overlook potential issues. However, there are common pitfalls that investors and lessees in Illinois should watch out for during the due diligence phase.

  • Overlooking hidden liabilities: It’s possible to miss financial liabilities such as unpaid utility bills or construction liens. Working with a real estate attorney helps to avoid these issues by reviewing all available documents and checking that there are no hidden obligations.

  • Underestimating zoning restrictions: Zoning laws can be complicated and specific to a local area. Failing to conduct a full zoning review may lead to legal complications if the intended use does not align with local laws.

  • Missing environmental risks: Properties that have previously been used for industrial purposes may have environmental risks. Failing to identify these risks during the due diligence phase can lead to significant clean-up costs and legal penalties.

  • Disregarding lease terms: Whether you're purchasing or leasing, neglecting to carefully read and negotiate the terms of the agreement can result in future disputes. Key areas to check include rent increases, renewal clauses, and maintenance responsibilities.

Due diligence in commercial real estate transactions is a detailed and multifaceted process, especially in Illinois. From verifying title ownership to inspecting the property, assessing the legal structure, and considering environmental risks, every step plays a significant role in protecting your interests. 

Contact My Law Firm Today

For anyone engaging in commercial real estate in Illinois, due diligence isn’t just a formality but a critical step to make sure that the investment or lease will align with your long-term goals. My firm, located in Oswego, Illinois, serves clients throughout Chicago’s West Suburbs, including Kendall County, Kane County, DuPage County, Grundy County, and DeKalb County.

Reach out to me at Mockaitis Law Group LLC to schedule a consultation.