Buying a property is, almost always, the most important financial transaction a person or a company will face. And yet, many purchases are closed without first checking what is really being bought. Real estate due diligence (in Spanish, diligencia debida) is precisely that: a thorough audit of a property’s legal, planning, technical and tax situation carried out before signing, with the aim of detecting risks, charges or contingencies that may affect the price or the very viability of the purchase.
Put simply: it is the investigative work that separates a good investment from an expensive problem. It applies to homes as much as to shops, warehouses or land, and it matters even more when you invest outside your country of residence. It is a standard part of any well-planned due diligence process within a purchase transaction.
Why you should not skip i
The underlying reason is simple: the seller does not always know (or does not always disclose) every problem with the property. An outdated land registry extract, an unlicensed renovation, a debt with the owners’ association or a planning issue are not visible at first glance, but they become yours the day you sign.
The most common risks a prior review brings to light are hidden charges (mortgages, liens or easements), planning infringements, construction defects that will require costly repairs, and outstanding debts that transfer with the property. Detecting them in time lets you renegotiate the price, require them to be resolved before signing or, if the risk is too high, walk away from the deal with full knowledge of the facts.
What a real estate due diligence examines
The analysis is organised into four complementary areas. None replaces the others: a property can be flawless at the registry level and still carry a serious technical problem, or the other way around.
- Legal and registry area. This is the core of the review. It verifies real ownership in the relevant registry, confirms there are no charges, mortgages, liens or easements, and reviews the contracts in force (leases, purchase options) that could condition the transaction. When complexity warrants it, this part is handled as a dedicated legal due diligence, with in-depth contractual and contingency review.
- Planning area. Here it is confirmed that the land use is compatible with what the buyer intends, that licences exist and are in order, and that there are no penalty proceedings, infringements or encumbrances limiting the property’s use. It is decisive for land and for properties intended for a non-residential use.
- Technical area (TDD). Technical due diligence assesses the physical condition of the building: structure, installations, envelope, defects and compliance with safety and energy efficiency regulations. It turns the state of repair into a real estimate of renovation or maintenance costs.
- Tax and financial area. It reviews the taxes tied to the property, outstanding debts (association fees, local taxes) and the economic viability of the operation once all costs are added up. In an investment, this is what tells you whether the numbers still add up after the analysis.
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The process, step by step
A well-run due diligence follows an orderly sequence that moves from information to judgement.
It all starts with document gathering: the seller provides deeds, licences, certificates (including the energy certificate), association bylaws and contracts, usually in a secure digital space or data room that centralises all the information. Next comes the multidisciplinary analysis, in which lawyers, technicians and economists review that documentation and carry out the physical inspection of the property to contrast what the papers say with reality.
The work then takes shape in a findings report that classifies each finding by severity (critical, moderate or minor risks) and quantifies its impact. That report is the tool used to make the final decision: renegotiate the terms, require remediation before signing or withdraw from the purchase.
The documents: a checklist before buying
The scope of the checklist varies with the type of property. A home is not reviewed in the same way as a shop or a plot of land, and it should be tailored to each case.
For a home, the basics are the updated land registry extract, the title deed, the energy certificate, the latest local tax receipt, the certificate confirming association fees are paid up and, if there is a mortgage, the outstanding-debt certificate. For a shop or commercial property, add the activity licence, the opening licence and the review of the leases in force. For a plot of land, the focus shifts to the planning classification, the applicable zoning and any possible encumbrances or easements.
Investing abroad from Andorra: the double due diligence
For anyone resident in Andorra who invests in property outside the Principality (in Spain, France or other markets), due diligence has two layers that must be resolved at the same time. The first is that of the country where the property is located: ownership, charges, planning, technical condition and local taxes are checked according to that country’s rules. In Spain, for example, through the land registry extract from the Registro de la Propiedad and a review of the IBI and the planning situation. It is, in essence, everything described above applied to the destination market.
The second layer is that of the Andorran investor. Here what matters is not the property but how the operation fits your tax and wealth situation: the form of the investment (personally or through a company), financing, the taxation of rental income and of a future capital gain, and the effect of the double taxation treaties between Andorra and the destination country. Planning this layer before signing is what prevents paying twice or getting trapped in an inefficient structure. It is precisely the field of foreign real estate investment from Andorra.
The practical conclusion is that both layers must be coordinated from the outset: a flawless review of the property in the destination country is of little use if the Andorran tax structure has not been thought through, or vice versa. When the two move in parallel, the investor decides with the full picture.
Practical example. A buyer resident in Andorra purchasing a property in Dubai (United Arab Emirates) found, in the destination-country layer, that the property was not in a freehold zone, the only kind where a foreigner can acquire full ownership; and, in the Andorran layer, that buying it personally complicated the repatriation and the taxation of the rental income compared with channelling it through a company. Resolving both matters before signing (redirecting the purchase to an asset in a freehold zone and choosing the right structure) avoided an acquisition without full rights and improved the net return on the operation.
How much does a due diligence cost and how long does it take?
This is the question almost no one answers clearly, and the honest answer is: it depends on the scope. Cost and timing vary with the type of property, its legal and planning complexity, and how many of the areas (including, in a cross-border operation, the tax layer) are activated.
As an order of magnitude, a standard home review can be resolved in a few days, whereas a commercial or cross-border operation takes several weeks and the involvement of a multidisciplinary team, which raises the budget. It is worth keeping it in proportion: the cost of the due diligence is a tiny fraction of the property price and, above all, of the amount it can end up saving by detecting a problem before signing.
Who should carry it out
Although different profiles are involved (technicians for the construction side, economists for the financial side), the coordination and legal judgement fall to the lawyer, who turns the findings into decisions and into safeguards within the contract. In an investment from the Principality, having a lawyer in house in Andorra makes it possible to combine, in a single team, the review of the property in the destination country and the Andorran tax planning, accompanying the operation from start to finish.
At Augé Fiscal&Legal we integrate the two layers of real estate due diligence (the one for the country where the property is located and the one for the investor resident in Andorra) into a single process, so that you buy or invest abroad with all the information on the table. If you are considering an operation, we can help you review it before you take the step.
