12 min read
11/08/2026

Antiparochi: How it works today in Athens and when it is more advantageous than selling

Land exchange (antiparochi) is a property development method where the owner agrees with a developer to construct a building on the plot.

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What you need to know

In antiparochi, the owner transfers an agreed undivided percentage of the plot to the developer and receives specific properties in the new building in exchange, without financing the construction themselves.
The antiparochi percentage does not have a single "correct" value. It depends primarily on the buildable square meters, the sales value of new residences in the area, the construction cost, and the required developer margin.
Antiparochi and selling are not two versions of the same transaction. The former exchanges immediate liquidity for future properties and a longer time horizon, whereas the latter immediately converts land into capital.

What is a plot antiparochi

Antiparochi is a method of developing a plot where the owner agrees with a developer to construct a building. The developer undertakes the construction and, as compensation for their work, acquires agreed undivided percentages of the plot, which correspond to specific horizontal properties. The landowner retains the remaining properties.

The terms are recorded in the developer preliminary agreement and the related notarial documents. Therefore, it is not enough to agree on a percentage, for example, 35%. It must be specified which exact properties this corresponds to, along with their characteristics, since two apartments of the same area can have different commercial values due to the floor, orientation, parking space, or other features.

The Independent Authority for Public Revenue (AADE) has specific provisions for construction contracts under antiparochi and the transfer of undivided percentages, making the tax and notarial review of this specific transaction essential before signing. (1)

How the antiparochi percentage is calculated

A landowner's first question is usually "what percentage can I get?". In practice, however, the correct question is "how much financial value can this plot generate?".

The calculation logic starts with three critical variables:

How many square meters can actually be built.

At what price the newly built properties in that specific area can be sold.

How much the development of the project costs, including financing, studies, construction, and the developer's required business margin.

In a simplified form:

buildable or sellable area × expected sales price = potential project value

From this, the total development cost and the required developer profit are subtracted. The financial remainder that can be attributed to the land is what ultimately determines how much room there is for antiparochi.

A hypothetical example

Let us assume, simply to understand the mechanism, that a development can generate sellable residences with a total area of 800 sq.m. and that the estimated average sales price is 4,000 euros per sq.m.

The potential sales value is: 800 × 4,000 = 3,200,000 euros.

If the total development cost, along with the necessary expenses and the required business margin, leaves a financial margin of 1,100,000 euros for the land, this is the basis upon which the developer's compensation can be examined.

This example does not constitute a valuation of a real plot, nor does it suggest a specific percentage. However, it shows why two plots of the same size might receive very different antiparochi offers.

The percentage, therefore, is not merely the result of the owner's negotiating skills. It is primarily the result of the project's financial viability.

What changed with the New Building Regulation (NOK)

Here lies one of the most significant differences between an antiparochi proposal from a few years ago and a proposal today.

Decisions 146 to 149 of 2025 by the Plenary Session of the Council of State affected the application framework for the building incentives and bonuses of NOK. The issue cannot be simply described as "the abolition of all bonuses". The subsequent framework of Law 5197/2025 linked the application of specific incentives to urban planning and the designated incentive zones in the Local and Special Urban Plans. (2)

For the landowner, the financial consequence is substantial. If a plot can ultimately utilize less surface area than calculated in an older scenario, the total area the developer can sell decreases. A smaller pie means a smaller margin for the developer's compensation.

This is why an antiparochi offer calculated with older building assumptions should not be automatically considered comparable to a new proposal.

At the same time, costs continue to pressure the equation. According to data from the Hellenic Statistical Authority (ELSTAT), the average Material Price Index for the Construction of New Residential Buildings for the twelve month period of March 2025 to February 2026 increased by 2.6% compared to the previous twelve months. (3)

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When a plot is attractive for antiparochi

There is no minimum surface area above which every plot automatically becomes interesting.

Viability depends on the combination of buildability and commercial value (see the difference between commercial value and assessed value). A smaller plot in an area where new builds sell at high prices can yield a better financial outcome than a larger plot in a market with lower prices.

Therefore, a useful rule applies: the lower the potential sales price of the final product, the more usable surface area the project usually needs to absorb the fixed costs and remain financially viable.

Before seeking offers, the owner thus needs a technical review of the actual buildability and a commercial valuation of both the land and the newly built residences in the area.

Antiparochi or selling the plot?

There is no absolute winner. The two options serve different financial and personal goals.

Parameter	Antiparochi	Sale
Liquidity	Future value in real estate	Immediate capital
Time horizon	Multi year	Usually shorter
Exposure to construction	Indirect risk of completion exists	Ceases after the transaction
Final outcome	New properties	Financial consideration
Control	Requires a clear agreement on the properties	No longer concerns the seller
Co-ownership	Requires coordination among owners	Also requires an agreement for the sale
Taxation	Special treatment of the construction contract	Sale or transfer taxation on a case by case basis

Antiparochi may be superior when the owner does not need immediate liquidity, wishes to acquire newly built properties without financing the development themselves, wants to remain in the same area, or owns a plot whose buildability and local new build market create a strong financial foundation for the project.

Selling, conversely, immediately converts the land's value into available capital and disconnects the owner from the time and risk of a future development.

The proper comparison, therefore, is not "antiparochi percentage versus sales price". It is the present net value of the plot versus the value, time, and risk of the properties to be delivered in the future.

What applies to taxation in antiparochi

The taxation of antiparochi requires special attention because the transaction is not identical to a simple plot sale.

AADE stipulates special rules for the delivery of plot percentages and the construction work provided as antiparochi. Under the VAT suspension regime for a developer, for example, AADE states that the construction work provided as antiparochi to the landowner is not invoiced with VAT but with a 3.6% stamp duty. However, the tax treatment depends on the regime of the specific development and should not be generalized without examining the file. (4)

For this reason, before financially comparing an antiparochi proposal with a purchase offer, a personalized calculation by a notary and a tax consultant is required. Otherwise, the owner risks comparing two gross values that do not lead to the same net financial outcome.

The risk that is often overlooked: What happens if the project stops?

The highest percentage is not necessarily the best offer.

An antiparochi agreement extends over time. Therefore, it must be evaluated not only on what the developer promises, but also on whether they can complete the project.

The legal and technical review needs to examine, among other things, the timetable, the stages at which plot percentages are transferred, the owner's securities, the consequences of delays or work stoppages, the guarantees that can be agreed upon, and the property handover process.

A female real estate agent in a black blazer showing floor plans on a tablet to two clients - a woman in a light coat with a patterned scarf and a man wearing glasses - in a bright, window-lit office setting.

How a proposal can be properly evaluated

The owner needs three different checks:

An engineer for buildability.

A legal check.

A tax check for the transaction and a reliable market valuation for the financial comparison.

A specialized real estate advisor can also contribute to this last part. Engel & Völkers, for example, can assist in estimating the commercial value of the plot and capturing the actual conditions of the local market, so the owner has an independent reference point when comparing a sale to antiparochi. The final choice, however, must be based on the owner's own goals and data, not on a general recommendation.

Eight important points before the developer preliminary agreement

Ask an engineer to calculate the current, truly usable buildability of the plot.
Check the actual commercial values of newly built properties in that specific micro area, not just the municipal average.
Convert the offered percentage into specific properties and an estimated commercial value.
Compare more than one proposal with the exact same terms, and not just based on the nominal percentage.
Verify the developer's financial and professional capacity to complete the project.
Ask a lawyer and a notary to examine the timetable, the securities, the percentage transfers, and the consequences of delays.
Calculate the net financial outcome of the antiparochi and the sale with a tax consultant before comparing them.
Do not evaluate an older antiparochi offer without a new technical review, especially after the changes that have affected the application of the NOK incentives.