Nina Mattos • December 14, 2025

Hire Real Estate Due Dilligence before ask the property price

By Nina Mattos , owner,Brazil Real Estate Advisor,

 International Realtor NAR Member ID Number (NRDS): 61244469


Personal Bahia Real Estate Agent license:


CRECIBA 35815 S


Realtor Rio de Janeiro License Number


CRECIRJ 067799 S


Real estate agent license in São Paulo

CRECISP 276119 S


Real estate agent license in Rio Grande do Sul

CRECIRS 47396 F


Brazilian Real Estate Appraiser CNAI ( Cadastro Nacional de Avaliadores Imobiliários)

COFECI - Brazilian Federal Council of Real Estate Brokers


Nº : 013394

Palm trees against a blue and yellow sky.

Valuing a property without full due diligence carries a 90% risk of financial loss


Check all documents, criminal records, tax, legaly issues possibility 


The Problem with Aspirational Pricing (Without Verification)

Basing a valuation purely on market comps without verifying the legality and physical status of the property leads to highly aspirational, unverifiable pricing. This approach often sabotages the sale process:

  1. Brazilian Long years Imposible resolving Tax, Court ( Legaly issues )
  2. Late-Stage Deal Collapse: Discovering a major issue during the buyer's inspection or title search often leads to the buyer walking away.
  3. Reputational Damage: The property returns to the market with a history of a failed sale, signaling potential issues to savvy new buyers.
  4. Forced Reductions: The seller is eventually forced to make massive price reductions to account for the newfound risk or necessary repairs, often selling for less than a realistically priced, "clean" asset would have fetched initially.



It's a common scenario in real estate: a quick valuation based on square footage, comparable sales, and location data is provided. This number, while a necessary starting point, is fundamentally incomplete—and potentially disastrously wrong—if it ignores a comprehensive investigation of the property's underlying status.

Valuing a property without full due diligence isn't just risky; it’s an exercise in theoretical finance, ignoring the critical question: can this asset actually be sold at that price today, with a clean title and clear conscience?

Here’s why a valuation without a complete due diligence review often falls flat in the real world.


The Illusion of "Worth"

The true definition of market value isn't what an appraiser thinks a property is worth; it’s the price a willing and able buyer is prepared to pay under normal, informed market conditions. A property is only "worth" what the market will bear, and the market, through its agents, demands certainty.

A buyer's offer is inherently conditional upon satisfactory due diligence. If you assign a value of $500,000, but a full review later uncovers a fundamental flaw, that value collapses instantly. The actual value is the number that survives scrutiny and results in a completed, legally sound sale.


The Silent Deal-Breakers Uncovered by Due Diligence

Due diligence is the process of verifying all material facts and data about a property. Skipping this step means potentially missing critical issues that turn a marketable asset into a liability:

  • Title and Legal Encumbrances: A valuation assumes a clear title. Due diligence uncovers liens, easements, boundary disputes, or pending legal actions that can prevent the transfer of ownership entirely until resolved. A property that cannot legally change hands is functionally worthless to a standard buyer.
  • Zoning and Usage Restrictions: Is the property valued as a potential commercial site? Due diligence verifies the zoning ordinances. If restrictions prohibit the proposed use, the valuation based on that use is void.
  • Permitting Issues and Code Violations: Unpermitted additions drastically reduce market viability. A buyer (or their lender) will demand these be corrected or demolished, adding significant costs and negotiation points that immediately devalue the property.
  • Environmental Concerns (Contamination, Flood Zones): A clean environmental audit is crucial. Undisclosed soil contamination or newly mapped flood risks can make a property unsalable through conventional financing routes, negating a high initial valuation.



Conclusion: Verify to Value

A professional valuation must always integrate the findings of a thorough due diligence investigation. It’s not enough to know what the house looks like or what the neighbor’s house sold for; you must know its legal and physical integrity.

The only number that truly matters is the one a buyer is willing to exchange for the keys after their attorney and inspector have cleared the asset. Until a property is verified to be sound, legally transferable, and free of hidden liabilities, any valuation remains purely theoretical. True value only materializes at the closing table, post-diligence.


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