By Aaron C. Lee
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December 1, 2025
Investing in Multi-Unit Property Is a Big Move - Make It a Smart One Multi-unit properties can be one of the most powerful tools for building long-term wealth. Duplexes, fourplexes, small apartment buildings, and mixed-use properties offer recurring income, tax advantages, and appreciation potential. In fast-growing areas like Allen, Plano, McKinney, Frisco, and the greater North Dallas region, investor interest in multi-family property continues to rise. But buying a multi-unit property is not the same as buying a single-family home. The legal, financial, and operational risks are different. A deal that looks profitable on paper can quickly become complicated if important issues are overlooked. At Aaron C. Lee Law Firm, we work with real estate investors throughout Collin County and North Texas who want to structure their purchases correctly, protect their investment, and avoid preventable legal problems. In this article, we break down five common mistakes investors make when buying multi-unit properties - and how to avoid them. What Is a Multi-Unit Property? A multi-unit property, sometimes called multi-family real estate, is a property that contains two or more residential units within a single structure or development. Examples include: Duplexes and triplexes Fourplexes Small apartment buildings Townhome clusters Mixed-use properties with residential units Unlike a single-family home, multi-unit properties involve multiple tenants, multiple leases, and more complex operational considerations. They are typically treated as income-producing investments rather than primary residences. Because these properties generate revenue, buyers must evaluate them differently. Investors must look beyond aesthetics and focus on contracts, tenant obligations, zoning rules, title issues, and long-term liability. Why Avoiding Mistakes Matters When investors make errors during acquisition, the consequences can be significant. Financial Consequences Overpaying due to inaccurate income projections Unexpected repair costs Inheriting delinquent tenants Losing rental income due to zoning violations Legal Consequences Breach of contract disputes Unenforceable leases Title defects Violations of local housing codes Personal Stress Owning multi-unit property can be rewarding, but it also requires management. Discovering hidden problems after closing can create unnecessary pressure and distraction. With proper planning and legal review, many of these issues can be identified before you close. Mistake #1: Failing to Conduct Thorough Due Diligence What Is Due Diligence? Due diligence is the investigation period before closing when a buyer evaluates the property's financial, legal, and physical condition. For multi-unit properties, due diligence should include: Reviewing rent rolls Examining all current leases Inspecting maintenance records Confirming zoning compliance Reviewing title commitments Evaluating existing service contracts Common Investor Error Some investors focus heavily on projected income but fail to verify whether: Tenants are actually paying on time Leases are legally enforceable Deposits were properly handled There are pending code violations Example An investor purchases a fourplex in McKinney based on strong reported rental income. After closing, they discover two tenants are months behind on rent and one lease is unsigned. Eviction becomes necessary, causing months of lost income. How to Avoid It Before closing: Request certified rent rolls. Review every lease agreement carefully. Confirm tenant payment history. Inspect for unpermitted renovations. Have an attorney review purchase agreements and title commitments. A proper due diligence process protects your investment before money changes hands. Mistake #2: Overlooking Zoning and Local Regulations Why Zoning Matters in North Texas Cities like Allen, Plano, Frisco, and McKinney have specific zoning classifications and occupancy limits. What was legal when the building was constructed may not comply with current ordinances. Investors sometimes assume that because a building exists, it is fully compliant. Common Issues Non-conforming use status Parking deficiencies Improper unit conversions Short-term rental restrictions Occupancy limit violations Example An investor buys a small apartment building near downtown Plano and later learns that one of the units was converted without proper permits. The city requires corrective action before allowing continued occupancy. How to Avoid It Before closing: Verify zoning designation. Confirm permitted use. Check for open code violations. Confirm certificates of occupancy. Legal review can help ensure the property is operating lawfully and won't face regulatory issues after closing. Mistake #3: Ignoring Title and Ownership Issues Understanding Title Risk Title issues can affect any real estate transaction, but income properties often carry additional risk. Common title problems include: Outstanding liens Unreleased prior mortgages Contractor mechanic's liens Easements affecting parking or access Ownership disputes Why This Is Critical If you acquire property with unresolved title defects, you may face: Difficulty refinancing Delays in resale Legal disputes Forced lien resolution Example An investor in Allen purchases a duplex only to discover a contractor lien from a prior renovation. The issue must be resolved before clear title can be confirmed. How to Avoid It Carefully review the title commitment. Confirm that all prior liens will be released at closing. Address any encroachments or easements. Work with a trusted title company and legal counsel. Title insurance is critical, but legal oversight adds another layer of protection when complex issues arise. Mistake #4: Using Inadequate Purchase Agreements Why Standard Forms May Not Be Enough Multi-unit properties often require more detailed contract terms than standard residential transactions. Important contract considerations include: Proration of rents and expenses Security deposit transfers Assignment of service contracts Representations regarding tenant status Repair obligations Estoppel certificates from tenants Common Error Investors sometimes rely entirely on boilerplate forms without customizing provisions for multi-family risk. Example An investor purchases a property without requiring tenant estoppel certificates. After closing, tenants dispute lease terms and rental amounts. How to Avoid It Work with counsel to: Review or draft custom provisions. Require tenant estoppel confirmations. Clarify prorations and deposits. Ensure seller representations are enforceable. A carefully structured agreement prevents costly misunderstandings later. Mistake #5: Failing to Structure Ownership Properly Entity Formation Matters Many investors purchase multi-unit properties under their personal names. This can expose personal assets to liability. Rental property ownership carries risk: Tenant injury claims Fair housing allegations Contract disputes Property damage claims Limited Liability Companies Forming an LLC to hold property can create liability separation between personal and business assets. However, simply forming an entity is not enough. Proper structuring and documentation are essential. Example An investor purchases a triplex personally. A tenant injury lawsuit puts personal savings at risk. With proper entity structuring, risk exposure could have been reduced. How to Avoid It Before purchasing: Consider forming an LLC or appropriate entity. Ensure proper operating agreements. Align ownership with estate planning goals. Legal guidance ensures your ownership structure matches your risk tolerance and long-term investment strategy. Additional Challenges Investors Face Even experienced investors encounter complications such as: Tenant disputes immediately after closing Deferred maintenance costs Insurance gaps Inherited lease violations Local ordinance changes Having a legal advisor familiar with both residential and commercial real estate can make navigating these issues far more manageable. How Aaron C. Lee Law Firm Supports Multi-Unit Investors At Aaron C. Lee Law Firm, we assist real estate investors across Allen, Plano, McKinney, Frisco, and greater North Dallas with: Reviewing and drafting purchase agreements Conducting legal due diligence Analyzing title commitments Coordinating with trusted title partners Forming LLCs and structuring ownership Advising on lease and tenant matters Addressing zoning and regulatory compliance Our approach is practical and strategic. We understand that investors are focused on profitability and long-term growth. By aligning legal review with your business objectives, we help reduce risk while preserving opportunity. Our philosophy is simple: your success is the foundation of our success. Frequently Asked Questions About Buying Multi-Unit Properties Do I need an attorney to buy a multi-unit property in Texas? Texas does not require an attorney for closing, but multi-unit investments involve complex financial and legal issues. Legal review can help prevent costly mistakes. How long should due diligence take? It varies, but investors typically negotiate a defined option or inspection period. That time should be used thoroughly. Should I always form an LLC? Not always. The best structure depends on tax strategy, estate planning goals, and liability concerns. Legal and financial professionals can help guide that decision. Invest Smart, Not Just Fast Multi-unit property can be a powerful wealth-building tool, but only when structured correctly from the beginning. If you are considering purchasing a duplex, fourplex, or apartment property in Allen, Plano, McKinney, Frisco, or the surrounding North Texas area, we encourage you to get experienced legal guidance before you close. Protect Your Investment Before You Sign Before you finalize your next multi-unit purchase, schedule a consultation with Aaron C. Lee Law Firm. We will review your contract, evaluate risk factors, and help ensure your investment is positioned for long-term success. Smart investors do not leave legal details to chance. They plan carefully, structure properly, and close with confidence. Let us help you do the same.