The thresholds for Greece's Golden Visa program were substantially increased in 2024. In the locations most sought after by foreign buyers — Attica, Thessaloniki, Mykonos, Santorini, and islands with a population exceeding 3,100 — the minimum qualifying investment is now €800,000. In all other locations, the threshold is €400,000. Both tiers require the acquisition of a single residential property of at least 120 square meters.

One route retains the lower threshold of €250,000. It is available anywhere in Greece, carries no minimum size requirement, and has received relatively little attention in the English-language coverage of the program. It involves the conversion of a commercial or industrial building to residential use — a route that is substantively different from a straightforward property purchase and that carries both genuine advantages and specific requirements that buyers should understand clearly before proceeding.

What the Route Involves

The conversion route qualifies an investor for the Golden Visa through the acquisition and complete transformation of a non-residential property — an office, a warehouse, a workshop, a commercial ground floor — into a finished residential dwelling. The €250,000 minimum applies to the purchase price; the cost of the conversion works is additional. The qualifying investment is the property purchase, not the total development cost.

The critical requirement is that the conversion must be fully completed before the Golden Visa application is submitted. A property under construction does not qualify. The finished dwelling must have received all necessary approvals — a change-of-use permit, a building permit for the conversion works, and a completion certificate issued by the supervising engineer — and must be a legally constituted residence before the residency application can proceed.

This sequencing matters. Buyers who acquire a commercial property with the intention of qualifying for the Golden Visa on purchase, and converting it afterwards, are not on the correct legal pathway. The conversion must precede the application, which means the full development process — acquisition, design, permitting, construction, and certification — must be completed first.

Why the Route Is Genuinely Useful

For buyers whose primary objective is Athens or the prime island markets — where the standard threshold is now €800,000 — the conversion route offers a considerably lower entry point into locations that would otherwise require a substantially larger commitment. A well-located commercial property in a desirable central Athens neighborhood, acquired and converted for a total outlay of €400,000 to €500,000 (purchase plus conversion costs), may represent better value than a standard residential purchase at €800,000 in the same market, depending on the specific asset.

The route also opens up a category of property that is less visible to competing foreign buyers. The market for convertible commercial assets in Athens — former offices, light industrial premises, ground-floor commercial units in established residential buildings — is less competitive than the market for finished apartments in prime locations. For buyers with the appetite for a development project and access to professional oversight, this represents a practical advantage.

A further consideration is flexibility. The €250,000 threshold applies regardless of location, meaning the route can be used for assets in central Athens, on the islands, or in any other part of Greece where a suitable commercial property can be identified. It is not constrained to the secondary markets that apply to the €400,000 standard tier.

The Construction Requirements

A commercial-to-residential conversion in Greece is a full construction project. It is not a renovation in the conventional sense. The change of use requires formal approval from the relevant Urban Planning Office, establishing that the location and the applicable planning framework permit residential use of the property. A building permit for the conversion works is then required, covering the full scope of the project: structural modifications, new plumbing and electrical installations to residential standards, thermal insulation, and all architectural works necessary to produce a complete and habitable dwelling.

The process involves an architect and a civil engineer at minimum — and typically a mechanical and electrical engineer for the services design. An energy performance study is required, and the completed building must have an Energy Performance Certificate. The full package is submitted digitally through the national e-permit system.

Given that the conversion must be complete before the Golden Visa application is filed, the timeline is a significant planning consideration. A well-run conversion project in Athens — from acquisition through permitting to practical completion and certification — should be programmed at a minimum of 18 months, and often longer depending on the complexity of the building and the workload of the relevant planning authority. Buyers who are working to a Golden Visa timeline must build this into their planning from the outset.

Short-Term Rentals and the Conversion Route

Properties acquired under the €250,000 conversion route are subject to the same short-term rental prohibition that applies to all Golden Visa properties under the current framework. The qualifying property may not be operated as a short-term rental — through platforms such as Airbnb or Booking.com — while it forms the basis of the residency permit. Violations are grounds for permit revocation and carry an administrative fine of €50,000.

Long-term residential rental is permitted. For buyers whose investment case includes rental income, the property can be let on a standard residential lease. This is consistent with the program’s broader direction: the new framework explicitly steers Golden Visa investment away from short-term rental use and towards the long-term residential market.

Professional Involvement

The conversion route is not a passive investment. It requires the identification of a suitable commercial asset, assessment of its planning and structural position, design by a licensed architect, engineering studies, permit management, active construction supervision, and the production of a certified completion package — all before the residency application can be filed.

For foreign buyers managing this process from outside Greece, the involvement of an integrated AEC practice capable of handling the full scope from feasibility through to completion is not an optional convenience. The conversion is a development project, and it carries the risks — program delays, design deficiencies, contractor management — that any development project carries. Professional oversight on the ground is the mechanism through which those risks are managed rather than absorbed.

The route is available, it is well-established in the current regulatory framework, and it represents a genuinely lower-cost pathway into the Golden Visa for buyers willing to undertake a more active process. For the right buyer, in the right location, with the right professional support, it is worth serious consideration.

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