Greek Building Permits & Legalization

Building or modifying property in Greece is not governed by a single rulebook. What you are allowed to build, how much you can build, and whether you need a permit depends first and foremost on where the land is located, and only secondarily on what you want to do with it.

The biggest source of confusion for both Greek and foreign owners is the assumption that “buildable land” is a universal concept. In reality, Greek planning law distinguishes very clearly between land inside town plans, land inside settlement boundaries, and land outside plans altogether. Each category follows different rules, different building limits, and different approval logic. Hotel and tourism projects follow yet another legal framework on top of that.

This guide explains how building permits and legalization actually work in Greece today, using real figures, clear distinctions, and the practical consequences owners face when they get it wrong.

Understanding the Three Core Land Categories in Greece

Before talking about permits, studies, or legalization, one question must be answered:

Where is the land legally classified?

Greek planning law separates land into three main categories. Mixing them up leads to wrong assumptions about buildability.

1. Land inside an approved town plan (entos schediou)

This is land located within an officially approved urban plan. These areas have defined zoning, infrastructure assumptions, and predictable building rules.

In town-plan areas, what you can build is controlled primarily by:

the building coefficient (Συντελεστής Δόμησης – Σ.Δ.)
the coverage percentage
maximum height and number of floors
land use zoning

Typical examples:

A plot of 500 m² with a building coefficient of 0.8 allows up to 400 m² of total buildable area.
Coverage is commonly around 60%, meaning only part of the plot footprint may be built on.
Height limits are usually 2 to 4 floors depending on the zone and municipality.

Minimum plot sizes vary by plan, but many town plans allow full buildability from as little as 200–300 m² if frontage and shape requirements are met.

Inside town plans, full building permits are mandatory for:

new construction
extensions
additional floors
structural modifications
change of use that affects planning parameters

Minor interior works may fall under simplified approval or notification, but this depends on scope.

2. Land inside settlement boundaries (entos oikismou)

This category causes the most confusion.

Land “entos oikismou” is not the same as land inside a town plan. Settlements are defined communities, often without a formal urban plan, and are governed by separate rules.

Settlements are commonly classified as:

pre-1923 settlements
settlements under 2,000 residents
settlements with special or traditional status

Buildability here depends on:

settlement classification
minimum plot size (often between 300 m² and 2,000 m²)
frontage and access
local building terms

Typical residential building allowances inside settlements often range from:

up to 240 m²
up to 400 m²
depending on settlement rules and plot size

However, height limits are usually stricter than town plans, often limited to:

2 floors
specific roof forms
traditional materials in designated areas

Inside settlements, building permits are still required for construction and extensions, but the allowed size and form are often more restrictive than owners expect.

Many people assume entos oikismou land is “almost urban”. Legally, it is not.

3. Land outside town plans (ektos schediou)

This is land outside any approved plan or settlement boundary.

Out-of-plan land follows the strictest rules and has been the subject of repeated legal changes over the years.

The general rule for residential buildability is:

minimum plot size: 4,000 m²
legal access to a recognized road is mandatory

On such plots, the typical maximum residential building allowance is:

up to approximately 186 m² for a single residence

This allowance may increase slightly with larger plot sizes, but it is not proportional. A 10,000 m² plot does not allow double the building area of a 4,000 m² plot.

Out-of-plan land:

cannot be subdivided freely
often has setback requirements from roads and boundaries
is subject to environmental, forest, and archaeological controls

Neighboring houses do not create buildability rights. Many existing buildings were constructed under older laws or exemptions that no longer apply.

Building permits for out-of-plan land are scrutinized more strictly and take longer.

When a Building Permit Is Required in Greece

A full building permit is required in all three land categories for:

new buildings
extensions
structural changes
roof modifications
additional floors
swimming pools
significant façade changes
changes of use that affect planning limits

Simplified approval or notification may apply to:

limited interior renovations
non-structural works
maintenance without changes to layout or load-bearing elements

Assuming a permit is “not needed” is one of the most common and expensive mistakes.

Legalization of Buildings and Unauthorized Constructions

Legalization applies to works that were carried out without the required permit or beyond approved plans.

Common legalization cases include:

enclosed balconies
additional rooms
extensions
changes in internal layout affecting area calculations
conversion of auxiliary spaces to residential use

Not all unauthorized works are legalizable.

Legalization depends on:

when the construction took place
land classification
zoning restrictions
environmental or heritage constraints

Some violations can be legalized with fines and technical submissions. Others cannot and may permanently restrict resale, renovation, or new permits.

Legalization is always handled by a licensed engineer and recorded officially. Verbal assurances mean nothing.

Residential vs Hotel Development: Different Rules Entirely

Hotel and tourism development is not governed by residential buildability rules.

A plot that is perfectly legal for a house may be completely unsuitable for a hotel.

Hotel development depends on:

zoning allowing tourism use
significantly larger minimum plot sizes
different density and coverage rules
mandatory hotel licensing
minimum room sizes and layouts
parking and accessibility requirements

Hotel licenses directly affect:

how many rooms are allowed
how space is allocated
whether a project is viable at all

Hotel feasibility must be checked before land purchase, not after design.

Who Issues Permits and Who Is Responsible

Building permits are prepared and submitted by licensed engineers through the official electronic system.

Responsibility lies with:

the engineer for technical accuracy
the owner for compliance
authorities for review and approval

Notaries, agents, or contractors do not replace permit responsibility.

Where Most Owners Go Wrong

The most common mistakes are:

assuming all land is treated the same
confusing entos oikismou with town-plan land
buying land before checking buildability
starting work without permits
legalizing too late, or not at all
applying residential logic to hotel projects

Most of these mistakes are irreversible once money is spent.

Greek Building Permits & Legalization