---
title: "Double Sale of an Apartment: How to Verify Documents for a New-Build Property and Not Lose Your Money"
description: "In Ukraine, buying an apartment in a new building without losing your money is helped by document verification: since 2022, future apartments are registered before the building is put into operation. We break down where to check the register and the portal."
date: 2026-09-07T05:10:00.000Z
lang: en
url: https://xab.info/en/posts/how-to-protect-yourself-from-a-double-sale-of-an-apartment
tags: [real-estate, apartment-purchase, fraud-prevention, ukraine, property-rights]
publisher: "XAB.info"
---

# Double Sale of an Apartment: How to Verify Documents for a New-Build Property and Not Lose Your Money

![A real estate agent shows apartment documents to a couple of buyers, explaining double-sale risks and how to verify ownership of a new-build property](https://xab.info/media/2026/09/07/kak-zashchititsya-ot-dvoynoy-prodazhi-kvartiry/kak-zashchititsya-ot-dvoynoy-prodazhi-kvartiry-1.webp)

## 🎯 Key Points

- For new builds started after October 10, 2022, future apartments are registered before the building is put into operation, which makes a double sale more difficult.
- The property can be checked by its identifier on the portal of the Unified State Electronic System in the field of construction, and by the registration number in the State Register of Rights to Real Estate.
- In older projects, the protection mechanism may be absent, so you need to manually check the developer's documents, the construction permit, seizures, and liens.
- In case of doubts, the documents should be handed to an independent lawyer before signing the contract.

Buying an apartment in a new building in 2026 still carries a risk that buyers often learn about too late: the same property can be sold to several people. Ukraine already has mechanisms in place that are meant to make such schemes harder to pull off, but before signing the contract, the future owner should independently verify the property documents. We break down where and what to check so you don't end up a victim of a double sale.

### Protection in New Projects: Registration Before the Building Is Commissioned

Today, protecting yourself from a double sale of an apartment has become noticeably easier — primarily for new builds whose construction started after October 10, 2022. The key difference in such projects is that the future apartments in them are registered before the building is put into operation. This means the property gets a "digital footprint" at an early stage, and any attempt to sell the same apartment to two buyers becomes technically and legally difficult.

### The Portal and the Register: Two Verification Tools

The first tool is the portal of the Unified State Electronic System in the field of construction. Using the property identifier, you can check the construction documents there: information about the land plot, the construction permit, the project, and the current status of the property. On the same portal, it is important to make sure the apartment is not part of the warranty share — such apartments may not be sold by the developer until the building is put into operation. The second tool is the State Register of Rights to Real Estate. Using the registration number of the future apartment, you can see the property's area, the owner, and information about any possible encumbrances.

### Older Projects: Where Protection Is Weaker

The situation is noticeably more complicated with housing in older projects, since the protection mechanism described above may be absent there. In this case, the buyer has to manually and more thoroughly check the developer's documents, the construction permit, and any possible seizures or liens on the property. It is precisely in such transactions that the risk of a double sale or the sale of encumbered housing remains the highest.

### Verifying Specifications and the Role of an Independent Lawyer

Separately, it is worth checking the apartment's specifications against the documents — sometimes fraud is revealed by simple arithmetic. For example, if you are being sold an apartment on the 20th floor, but the building has only 18 floors, that is an obvious reason to halt the deal and investigate the situation. In case of any doubts, it is better to hand the documents over to an independent lawyer for review before signing the contract, not after.

### Market Context: Demand for One-Room Apartments and Prices in Kyiv

These checks are all the more important because competition in the housing market remains high. According to previously published data, competition for one-room apartments in Ukraine remains at a high level: in the rental market, demand for such housing is four times greater than demand in the purchase market, and in some regions more than 40 potential tenants are competing for a single apartment. At the same time, real estate in Kyiv is not getting cheaper even despite the war: on average, one-room apartments cost around 70,000 dollars, and two-room apartments — over 100,000. The high cost of the deal makes document verification not a formality, but a mandatory step.

## 🔍 Fact-Check Verification

- [Double Sale of Apartments: What to Check Before Buying So You Don't Become a Victim of Fraudsters](https://www.rbc.ua/ukr/news/podviyniy-prodazh-kvartir-shcho-pereviriti-1788434138.html) - Единственный источник. Подтверждает: регистрацию будущих квартир в проектах, начатых после 10.10.2022; проверку по идентификатору на портале Единой государственной электронной системы в сфере строительства (земельный участок, разрешение, проект, статус, гарантийная доля); проверку по регистрационному номеру в Государственном реестре прав на недвижимое имущество (площадь, владелец, обременения); более сложную ситуацию со старыми проектами; пример с 20-м этажом при 18 этажах; роль юриста; контекст рынка (аренда «однушек» в 4 раза выше покупки, более 40 арендаторов на квартиру в отдельных областях, цены в Киеве ~70 тыс. и >100 тыс. долларов). Противоречий не найдено.

## ❓ FAQ

### Q: From what year are future apartments in new builds registered before the building is put into operation?
**A:** For projects whose construction started after October 10, 2022, future apartments are registered before the building is put into operation.

### Q: Where can I check the documents for the property and the apartment?
**A:** By the property identifier — on the portal of the Unified State Electronic System in the field of construction (land plot, construction permit, project, status, warranty share). By the registration number of the future apartment — in the State Register of Rights to Real Estate (area, owner, encumbrances).

### Q: What should I do if the apartment is part of the warranty share?
**A:** The developer has no right to sell such apartments until the building is put into operation, so the presence of an apartment in the warranty share is a reason not to conclude the deal until the property is commissioned.

### Q: What to do in case of doubts about the authenticity of the documents?
**A:** It is better to hand the documents over to an independent lawyer for review before signing the contract, not after.