OSBB, Building Managers and the Legacy ‘ZHEK’ Model in Ukraine

Last reviewed on 29 September 2026. Apartment listings in Ukraine still use the word ZHEK as shorthand for building maintenance, but that label can hide very different legal and operational arrangements. For a buyer, the useful question is not simply ‘OSBB or ZHEK?’ It is who makes decisions, who holds the contracts and money, and how well the building is actually managed.

What an OSBB is

An OSBB is an association of co-owners of a multi-apartment building. It is a legal entity created by the apartment and non-residential-unit owners to help them exercise their rights and duties, manage and use common property, and fund maintenance. The co-owners remain the owners of the common property; the association is the governance and coordination vehicle.

The general meeting is central. It approves key decisions, contributions and the direction of management, while the board and other authorised bodies carry out the association's work. An OSBB can employ staff or contract professional service providers; it does not require residents to repair the roof themselves.

What a building manager does

A manager is a person or business that provides building-management services under a contract. Co-owners may choose a manager directly, and an OSBB may also contract specialists for maintenance, accounting, cleaning, repairs or emergency services. Governance and service delivery are therefore separate questions: an OSBB can exist and still outsource daily operations.

Where ‘ZHEK’ fits today

ZHEK is a legacy term commonly used for municipal or former municipal housing-maintenance organisations. It is not a complete description of the building's current legal management model. A building may receive services from a municipal enterprise, a private manager or several contractors, while decisions remain with the co-owners under the applicable ownership framework.

This is why a comparison that treats OSBB and ZHEK as two equivalent legal forms is misleading. OSBB describes an association and governance structure. ZHEK usually describes a familiar type of service provider or an inherited operating arrangement. The practical quality of either arrangement depends on records, contracts, collections and execution.

Potential advantages of an active OSBB

• Owners can set priorities and approve budgets through a documented decision process
• The association can choose contractors and monitor service quality
• Income, arrears, planned works and reserve needs can be made more transparent
• The building can organise grant, co-financing or energy-efficiency projects where eligible
• Responsibility for communication and execution can be assigned to identifiable bodies

Risks are operational, not only structural

• Low owner participation can delay decisions
• Weak collection of contributions can leave urgent work unfunded
• Poor procurement or related-party contracting can raise costs
• Incomplete minutes, accounts or technical records make due diligence harder
• A capable chair and board can change, so systems matter more than one personality

Buyer due diligence before signing

• Identify the current management arrangement and obtain the relevant OSBB or management details
• Ask for recent meeting minutes, the approved budget and planned capital works
• Confirm monthly contributions, utility arrangements and any arrears attached to the apartment
• Review outstanding disputes, major repair decisions and any financing commitments
• Inspect common areas, roof, basement, lifts and engineering systems rather than relying on the apartment finish
• Speak with more than one resident about communication, outages and completed repairs

The better model is the one you can verify

A registered OSBB is not an automatic guarantee of good management, and the absence of one is not automatic proof of neglect. The strongest building is usually the one with clear authority, reliable collection, transparent records, competent contractors and an achievable maintenance plan.

When buying an apartment, review the building as carefully as the title: governance, money and deferred maintenance will follow you after closing.