By DC Engineers | Architecture, Engineering & Construction

The Greek Golden Visa programme has attracted substantial international investment since its introduction in 2013. The legal and immigration aspects of the programme are relatively well documented — investment thresholds, residency rights, application procedures. What receives considerably less attention is the technical dimension of the property at the centre of the investment: its construction quality, legal compliance, and actual condition.

This article addresses that gap. It is written for buyers who have done their research on the Golden Visa process and now need to understand what due diligence on the property itself requires — and why, in the context of a Golden Visa acquisition, it matters more than many buyers realise.

The Golden Visa Property: What the Programme Requires

To qualify for a Greek Golden Visa, the investment must meet a defined minimum threshold. As of 31 March 2024, the applicable threshold depends on the location of the property:

• €800,000 — for properties in Attica (the greater Athens region), Thessaloniki, Mykonos, Santorini, and islands with a population exceeding 3,100
• €400,000 — for all other locations in Greece
• €250,000 — for the acquisition of listed buildings (διατηρητέα), conversion of commercial properties to residential use, or conversion of industrial buildings to residential use — regardless of location

In addition to the investment threshold, the following property conditions apply:

• The investment must be in a single property of at least 120 sq.m. — multiple smaller properties combined do not qualify
• The property must be registered for residential use; it cannot be subdivided for separate sale

The programme grants a five-year residence permit, renewable indefinitely provided the investment is maintained. Permanent residence in Greece is not required to maintain the permit. The permit extends to the investor's spouse, children up to 21 years of age, and the parents of both spouses.

Short-term rental of a Golden Visa property is permitted under Greek law, subject to registration with the Greek tourism authority (MHTE) and compliance with the applicable tax and licensing framework.

Important: Investment thresholds and programme conditions have been revised on multiple occasions and remain subject to further legislative change. The figures above reflect the regulatory position as of the time of writing and must be confirmed with a qualified Greek lawyer before any acquisition decision is made.

The €250,000 Route: Listed Buildings and Commercial-to-Residential Conversion

Following the significant increase in standard Golden Visa thresholds, the €250,000 qualifying route has attracted considerable attention. It applies to two distinct property categories:

Listed buildings: The acquisition of a building with listed or protected status qualifies at the €250,000 threshold regardless of location. These properties carry specific restoration obligations and are subject to strict architectural controls.

Commercial-to-residential conversion: A foreign buyer who acquires a commercial property — an office, a retail unit, an industrial premises, or other non-residential building — and converts it to registered residential use qualifies at the €250,000 threshold, regardless of location. This applies equally in Attica and other high-threshold zones where a standard residential acquisition would require €800,000.

The practical appeal of both routes is clear. A well-located commercial unit in Athens or another major urban centre, acquired and converted at a total cost — purchase price plus conversion works — of €250,000 or above, satisfies the investment requirement at a fraction of the cost of a direct residential acquisition in the same area. Similarly, a listed building acquired for €250,000 and restored can represent exceptional long-term value in premium locations.

What This Route Requires in Practice

The conversion is not merely a change of use declaration. It is a full technical and regulatory process, and its complexity is consistently underestimated by buyers who approach it without professional guidance.

The following is required:

Change of use permit. A formal change of use application must be submitted to the competent Urban Planning Office, supported by a complete set of architectural and engineering studies demonstrating that the property, as converted, meets the requirements for residential use. This includes minimum floor areas, ceiling heights, natural light and ventilation standards, and — critically — compliance with current energy efficiency requirements, which commercial buildings frequently do not meet.

Structural assessment. Commercial buildings are designed to different structural and loading standards than residential ones. A qualified structural engineer must assess whether the existing structure is adequate for residential use and identify any interventions required. In older buildings, this assessment frequently reveals the need for seismic strengthening works.

Mechanical and electrical redesign. Commercial premises typically have electrical, plumbing, and HVAC installations configured for non-residential use. A full redesign and installation is generally required to meet residential standards — including the installation of a kitchen, bathroom facilities, and appropriate heating and cooling systems.

Energy Performance Certificate. A residential EPC must be obtained on completion of the conversion. Many commercial premises, particularly older ones, will require significant insulation and systems upgrades to reach an acceptable energy rating.

Building Electronic Identity. The property's Building Identity must be updated to reflect the new residential use and the completed conversion works.

The Technical Risk Specific to This Route

The €250,000 threshold creates a compressed investment budget relative to the scope of work required. Buyers who focus on the acquisition price without accurately costing the conversion works frequently find that total project cost exceeds expectations — sometimes substantially.

The most reliable approach is to commission a detailed technical assessment and conversion cost estimate before finalising the purchase price. The assessment must cover structural adequacy, the full scope of systems replacement, energy upgrade requirements, and the permit process timeline. A property that appears attractive at its asking price may present a different picture once the conversion cost is properly understood.

DC Engineers has direct experience with commercial-to-residential conversions in the Athens market. We provide pre-purchase technical assessments that establish a realistic all-in project cost — purchase, conversion, permits, and professional fees — before any commitment is made.

Why Construction Quality Is a Golden Visa Issue — Not Just a Technical One

The relevance of construction quality to a Golden Visa buyer extends well beyond the obvious concern for safety and comfort. Consider the following dimensions:

Investment Value

A Golden Visa property is, by definition, a significant financial asset. In the €400,000–€800,000+ price range, the margin for error is limited. A property with concealed structural defects, unresolved arbitrary constructions, or poor energy performance is worth materially less than its acquisition price — and the correction costs may be substantial.

Rental Performance

The majority of Golden Visa buyers intend to generate rental income, whether through long-term lettings or short-term tourist rentals. Rental performance is directly correlated with property condition, quality of finishes, energy performance, and — increasingly — compliance with the minimum standards required for tourism accommodation registration. A property that requires significant investment before it is rentable is not the income-generating asset it appeared to be at acquisition.

Resale Liquidity

The secondary market for Golden Visa properties in Greece is active, but selective. Buyers in this segment are increasingly sophisticated and, with the benefit of professional advisors, will identify legal and technical deficiencies that affect value. A property with an unresolved arbitrary construction declaration, an incomplete Building Identity, or documented structural issues will attract a discount or fail to transact at all.

Programme Compliance

The Golden Visa requires continuous compliance with the investment conditions for the residency to remain valid. A property that is subsequently found to be legally problematic — subject to a demolition order for a non-regularisable arbitrary construction, for example — creates compliance risk for the visa holder. The immigration dimension and the technical dimension of the acquisition are not independent of each other.

The Most Common Technical Issues in Golden Visa Properties

Based on direct experience with properties in the Golden Visa price segment across Athens, the islands, and other high-demand locations, the following issues arise with meaningful frequency.

Arbitrary Constructions in Renovated Properties

A large proportion of Golden Visa acquisitions involve properties that have been recently renovated — either by the seller specifically for sale, or as part of a developer's conversion project. Renovation creates multiple opportunities for arbitrary construction: works executed without the required permit, alterations that deviate from the approved plans, or new elements added in excess of what the permit authorised.

A visually impressive renovation conceals rather than resolves underlying legal issues. The obligation to verify compliance rests with the buyer, not the seller.

Developer Projects and Incomplete Documentation

New build and conversion projects marketed to Golden Visa buyers are not uniformly well-documented. The following deficiencies are encountered in practice:

• Building permits that are valid but incomplete — issued for part of the project and not yet extended to cover the full scope of works
• Energy Performance Certificates based on design-stage calculations rather than as-built conditions
• Electronic Building Identities not yet established at the point of sale
• Structural supervision records that are incomplete or insufficiently detailed

None of these issues necessarily renders a property unsaleable, but each requires resolution, and each should be identified before the purchase price is agreed.

Older Buildings Marketed as "Fully Renovated"

The characterisation "fully renovated" in a property listing does not have a defined technical meaning and is frequently applied to properties where the renovation has addressed surface finishes while leaving structural, waterproofing, and installation deficiencies unresolved.

In older Athenian apartment buildings, the common condition encountered is: new kitchen and bathroom finishes, new flooring, new paintwork — combined with an original electrical installation from the 1970s or 1980s, original plumbing, unaddressed damp penetration, and a roof in poor condition shared with other apartment owners who may not be aligned on the need for expenditure.

The technical assessment must look behind the finish.

Island Properties with Coastal or Forestry Complications

Premium island properties in the Golden Visa price range are frequently located in positions of high landscape sensitivity — cliff edges, coastal frontage, hillside settings. These locations carry elevated regulatory risk:

• Coastal setback violations — constructions built closer to the shoreline than the law permits, which may not be regularisable
• Forestry zone encroachments — a significant issue in areas where land classification has been disputed or revised
• Archaeological buffer zone proximity — relevant in many parts of Greece and capable of imposing significant restrictions on alteration or extension

These are not issues that a standard property inspection will identify without specific regulatory research. They require a qualified engineer and lawyer working in combination.

What a Pre-Purchase Technical Assessment Must Cover for Golden Visa Buyers

The standard pre-purchase technical assessment described in our earlier article on buying property in Greece applies in full to Golden Visa acquisitions. In addition, the following elements warrant specific attention in this context:

Verification of Golden Visa eligibility of the property. Not all properties are eligible for the programme. Confirm with your lawyer that the specific property — its type, configuration, and legal status — meets the programme requirements as currently defined.

Confirmation that the investment value meets the applicable threshold. The threshold applies to the acquisition price as recorded in the notarial deed, inclusive of applicable taxes and fees, or to the property value alone, depending on the specific calculation basis prescribed by the programme rules at the time of acquisition. This must be confirmed with your lawyer.

Assessment of rental readiness. If rental income is part of the investment rationale, the property should be assessed against the technical and regulatory requirements for tourism accommodation registration (MHTE). These include minimum space standards, safety requirements, and installation specifications. Identifying the gap between current condition and registration requirements before purchase — rather than after — allows the cost to be factored into the acquisition economics.

Review of the Building Electronic Identity. For a Golden Visa property, the completeness of the Building Identity is a proxy for the quality of the seller's documentation management. A complete and current Building Identity indicates a well-maintained legal record. An absent or incomplete one requires explanation and resolution.

Independent structural assessment for properties over twenty years old. Seismic adequacy is not guaranteed by age or by the original construction standard. For an asset of this value, a structural assessment by a qualified engineer is a proportionate investment.

The Role of the Independent Engineer in a Golden Visa Acquisition

The independent engineer's role in a Golden Visa acquisition is broader than in a standard residential purchase. Beyond the technical inspection, it encompasses:

• Pre-purchase assessment of the property's condition and compliance status
• Estimation of any works required to bring the property to the desired operational standard
• Review of developer documentation for completeness and accuracy
• Liaison with the buyer's lawyer on technical aspects of the title search and permit verification
• Post-acquisition project management for renovation or fit-out works
• Ongoing supervision support for remote owners during any construction phase

For foreign buyers investing at the Golden Visa threshold, the cost of a thorough independent technical assessment is a small fraction of the acquisition value and a proportionate response to the risk profile of the transaction.

A Practical Note on the Athens Market

The majority of Golden Visa acquisitions in Greece are concentrated in Athens — particularly in the central and southern neighbourhoods that have experienced the most significant price appreciation: Kolonaki, Pangrati, Koukaki, Glyfada, Voula, and the southern coastal suburbs.

In this market, the pace of transactions and the competition among buyers — particularly at the €400,000 threshold — creates pressure to move quickly. Sellers and agents will represent that due diligence can be conducted after the preliminary agreement is signed. This representation should be resisted.

In a competitive market, the temptation to compress due diligence is greatest — and the consequences of doing so are not diminished by market conditions. The appropriate response to time pressure is to have your professional team in place before you identify a property, so that assessment can proceed rapidly when required.

Summary

The Greek Golden Visa programme offers a legitimate and well-established pathway to European residency through property investment. The properties available in the qualifying price range span the full spectrum of quality, legal compliance, and investment merit.

The programme's investment threshold ensures that the sums involved are significant. The due diligence applied to those investments should be commensurate. Technical assessment, independent of the seller and the agent, conducted before any commitment is made, is the standard of practice that the scale of these transactions warrants.

DC Engineers - Technical Due Diligence for Golden Visa Property Acquisitions

DC Engineers provides independent technical due diligence for foreign buyers acquiring property in Greece under the Golden Visa programme and outside it. Our services include pre-purchase structural and compliance assessment, permit and documentation verification, renovation cost estimation, and full project management for post-acquisition works.

We operate in Athens and across the Greek islands, with permanent offices in Chalandri (Athens) and Andros, Cyclades. All client communication is conducted in English.

This article is provided for informational purposes only. Golden Visa programme thresholds and conditions are subject to legislative change. Legal advice specific to your circumstances and current programme requirements should be obtained from a qualified Greek lawyer prior to an acquisition decision.