COP31 in Antalya: What Turkey's Climate Push Means for Property Buyers

COP31, the UN climate summit of 9 to 20 November 2026, has Antalya as its host city. Turkey holds the presidency and runs the summit’s Action Agenda, while Australia leads the formal negotiations. The agenda covers emissions, energy and climate-resilient cities.

For anyone thinking about buying property in Turkey, the summit is a useful moment to look past the headlines. The rules that decide how new Turkish homes are built, insulated and certified have been tightening for several years, and COP31 puts that direction on the record. This guide explains what has actually changed, what has not, and what a buyer should check before signing.

What COP31 is, and what it is not

COP31 is a diplomatic conference. It leaves Turkish property law, title deed procedures and foreign-ownership rules as they are. A home bought in Istanbul next month goes through the same tapu process it did last month.

What the summit does is show where national policy is heading. Turkey's presidency has set out priorities that include a clean energy transition, zero waste and climate-resilient cities. Those themes match a set of laws and building rules that are already in force, and those rules do affect what you buy.

The policy background: three things already in place

1. A 2053 net zero target and a 2035 emissions cap

Turkey has committed to net zero emissions by 2053. In November 2025 it submitted its updated climate pledge (NDC 3.0), which caps national emissions at 643 million tonnes of CO2 equivalent in 2035. Buildings are one of the main levers: according to the TOBB air-conditioning sector council, the building sector accounts for roughly a third of Turkey's energy consumption.

2. The Climate Law of 2025

In July 2025 the Turkish parliament adopted the country's first Climate Law. It creates a national emissions trading system, a green taxonomy and provincial climate change boards, and it obliges local authorities to adopt climate action plans before 2028. The law does not set building standards itself, but it builds the framework that future energy and urban rules will sit inside.

3. Nearly zero-energy rules for larger new buildings

This is the part that matters most to buyers. Under the amended Energy Performance Regulation for Buildings:

• From 1 January 2023, any new building with at least 5,000 m² of total construction area has had to meet the nearly zero-energy standard: energy class B or better, with a minimum of 5% of its energy coming from renewables.
• From 1 January 2025 the threshold fell to 2,000 m² and the renewable minimum went up to 10%.
• Required insulation thickness was also raised. In Istanbul, for example, the standard went from 5 cm to 8 cm.

In practice, most residential projects in Istanbul's newer districts are far larger than 2,000 m². A project that received its building permit under these rules is held to a noticeably higher energy standard than one built ten or fifteen years ago.

The energy certificate every buyer should ask for

Every building in Turkey is rated on the Energy Identity Certificate (Enerji Kimlik Belgesi, EKB), on a scale from A (most efficient) to G (least efficient). Key points:

• New buildings need an EKB to receive their occupancy permit (iskan), and class C is the minimum for a new building.
• The certificate is valid for ten years from its issue date.
• Under the energy performance rules, an EKB is expected when a building is sold or rented, so the seller or developer should be able to show it.

The EKB is a quick, objective way to compare two apartments that look similar on paper. A class B flat and a class D flat of the same size can have very different heating and cooling bills, especially in a city with cold, damp winters like Istanbul or hot summers like Antalya.

Why energy performance affects value, not just bills

Energy performance has a direct effect on monthly running costs. It also affects how a property holds its value. Three reasons:

1. Regulation keeps moving in one direction. The thresholds have tightened twice in three years. Homes built to today's standard are less likely to look outdated when the next step comes.
2. Tenants notice running costs. In rental markets, an apartment with lower utility bills is easier to let and easier to keep let. That supports yield, which is the main reason many foreign buyers invest. Our guide to investment property in Turkey covers yields in more detail.
3. Future buyers will ask the same questions. Many international buyers come from markets where energy ratings are standard. When you resell, a good EKB class and modern building systems make the conversation easier.

A buyer's checklist for the COP31 era

Before committing to a property, ask for and check the following:

• Energy Identity Certificate (EKB): the class, the issue date, and that the address and flat number match the unit you are buying.
• Building permit date: a permit issued under the 2023 and 2025 rules means the newer energy standards applied to the design.
• Heating and cooling system: central system, individual combi boiler, heat pump or underfloor heating, and who pays for what.
• Insulation and glazing: exterior insulation and double or triple glazing make a measurable difference in comfort.
• Renewable features: solar panels for common areas or hot water, and how the savings are reflected in the monthly maintenance fee (aidat).
• Orientation and daylight: south and east facing flats usually need less artificial light and heating. See our article on apartment orientation and natural light.
• Location risks: distance from streams and low-lying ground, green space nearby, and access to public transport.
• Earthquake compliance: energy standards and structural safety go together. Ask for the building's compliance with the current earthquake code.

For structural safety, which matters more than energy class in an earthquake zone, read building standards before buying property in Turkey.

What COP31 does not change for foreign buyers

It is worth being clear about what stays the same:

• Foreign nationals can still buy property in Turkey under the same legal process, through the title deed office.
• The Turkish citizenship by investment programme keeps its existing rules, including the minimum property value and the official valuation report.
• Supply and demand, building costs and the economy at large set prices. A climate summit by itself does not move them, and anyone claiming otherwise is guessing.

Bigist Invest's view

We see COP31 less as a turning point and more as a confirmation. Turkey's building rules have been moving towards higher energy performance since 2023, and the 2025 Climate Law sets the framework for more to come. For buyers, the practical lesson is simple: treat energy performance as one of the first questions you ask, alongside location, title and price.

When we shortlist projects for clients, we ask for the EKB class, the permit date and the building systems early, so that clients can compare like with like. If you are planning a purchase in Istanbul or elsewhere in Turkey, browse property for sale in Turkey, read the Turkey property buying guide or see how to start investing in property in Turkey.

Frequently asked questions

Does COP31 affect property prices in Turkey?

Not directly. COP31 is a diplomatic conference and does not change property law or prices. What matters for buyers are the energy rules already in force, which favour newer, more efficient buildings.

What is the Energy Identity Certificate (EKB)?

The EKB is Turkey's official energy rating for buildings, on a scale from A to G. It is valid for ten years, and a new building needs class C or better to obtain its occupancy permit.

Which new buildings must be nearly zero-energy?

From 1 January 2025, the nearly zero-energy standard applies to any new building with at least 2,000 m² of total construction area: energy class B or better, with a minimum of 10% of its energy coming from renewables.

Does COP31 change the rules for Turkish citizenship by investment?

No. The citizenship by investment programme keeps its existing requirements. COP31 does not change them.

Sources: UNFCCC and COP31 presidency announcements; Republic of Turkey Ministry of Environment, Urbanisation and Climate Change, Directorate of Climate Change (Climate Law, July 2025); Turkey's NDC 3.0 (November 2025); the Regulation on Energy Performance in Buildings (February 2022 amendment). This article provides general information and is no substitute for legal or financial advice.