When Do You Need SVJ Consent for Apartment Alterations in the Czech Republic?

Basic rights of a unit owner and the limits of the SVJ

Key limitations for the owner are that they must not make it more difficult for another owner to exercise the same rights, nor endanger the common parts of the building. The common parts are physically part of the building and include load-bearing structures, vertical risers, the façade, windows, corridors, and the roof—even if they are located inside the apartment.

The SVJ cannot, through its bylaws, generally restrict your fundamental ownership rights beyond what is permitted by law. If the bylaws contained an absolute ban on doing business from an apartment or arbitrarily restricted disposal of the unit, such provisions are typically unenforceable due to conflict with Czech law.

The SVJ cannot blanket-ban you from renting out your apartment or buying new furniture, but it may regulate the rules for using common areas and the house rules. This distinction is something the attorneys at ARROWS deal with constantly, because owners are often unaware of what the SVJ can and cannot prohibit under the Czech legal system.

Construction works inside an apartment: What requires consent

The most common construction works include bathroom renovations, replacing a kitchen unit, painting walls, or replacing floor coverings. Many of these works do not require a permit from the Building Authority in the Czech Republic, but specific rules apply in relation to the SVJ under Section 1182 of the Czech Civil Code.

Under Section 1182, the owner is obliged to allow access to the apartment if required for alterations to the building, which implies a duty to inform the SVJ about the works in advance.

Works that require the SVJ’s consent and a permit from the Building Authority include demolishing a load-bearing wall, interventions in common utility lines, or changing the appearance of the building. In these cases, you must have project documentation and submit an application for a permit for the intended project to the Building Authority.

If you carry out construction works requiring a permit without obtaining it, the Building Authority may order removal of the construction at your expense. The attorneys at ARROWS commonly handle situations where owners find out too late that they face sanctions and an obligation to restore the original condition under Czech legislation.

Change of the purpose of use of an apartment

A change of the purpose of use (for example, from an apartment to an office, a medical practice, or a shop) is legally complex under Czech law. It is not just a renovation, but a change in the legal nature of the unit, which must be permitted by the Building Authority and must be reflected in the Owner’s Declaration.

The Owner’s Declaration is a document filed in the Collection of Deeds of the Czech Cadastral Register, which defines the units in the building. If the purpose of use changes to non-residential premises, this document must also be amended.

The process includes consultation with a designer, preparation of documentation, obtaining approval for the change from the authority, and the subsequent amendment of the Owner’s Declaration. For this amendment, you need the written consent of the affected owners and the consent of a majority of the votes of all unit owners.

The situation becomes more complicated if the change would alter co-ownership shares in the common parts, for example in the case of an extension. The attorneys at ARROWS can guide you safely through all steps and communicate with the Building Authority and the SVJ.

Voting at the SVJ meeting

Decisions on amending the Owner’s Declaration or on construction works affecting the common parts require proper voting. The rules are set by Czech law and the SVJ’s bylaws, with the first step always being whether the meeting has a quorum.

This means that unit owners holding more than 50% of all votes must be present, unless the bylaws set a higher quorum.

To adopt an ordinary resolution, the law requires the consent of a majority of the votes of the owners present, unless the bylaws require a higher number. However, the rules for amending the Owner’s Declaration are stricter.

To amend the Owner’s Declaration, Czech law requires the consent of a majority of the votes of all owners, as well as the consent of the owners directly affected by the change.

An amendment to the Owner’s Declaration does not become effective merely by a vote at the owners’ meeting; it must be executed in writing. If ownership shares are being changed, a written agreement of all unit owners is required.

What works the SVJ can block

The SVJ administers the building and the land, and its powers end where the exclusive ownership right to the apartment begins. It must regulate interventions in load-bearing structures, technical installations, and changes to the external appearance of the building.

The SVJ bylaws cannot validly restrict ownership rights beyond what Czech law allows; such provisions are null and void or invalid.

Many SVJs attempt to prohibit short-term rentals or business activities through their bylaws, which often runs up against the limits of Czech legislation. If the SVJ is blocking your rights without a legal basis, the Czech legal team at ARROWS advokátní kancelář can prepare a legal opinion for you.

Risks related to construction alterations and change of use

Process for notifying construction alterations

If you are planning construction works, it is your duty to proceed transparently to avoid disputes. The first step is to prepare documentation, and for interventions into load-bearing structures a structural engineer’s report is required.

We recommend addressing consent well in advance, at least 30 days before the planned start of the works.

If you cause damage to common parts, you are liable for it. Without proper documentation of the condition before the works begin, it is difficult to prove that the damage did not arise through your fault.

When you need a permit from the Building Authority

The new Building Act (Act No. 283/2021 Coll.) unified the previous regimes into a single “permit for the intended project” procedure. At the same time, it defines categories of constructions that do not require a permit, in particular in Annex No. 1.

Under Annex No. 1 to the new Building Act, construction alterations do not require a permit provided they do not affect the load-bearing structures of the building.

Typically, this includes a bathroom renovation within the same footprint, replacement of floors, plaster, or internal utilities within the apartment. For these alterations, notifying the SVJ is usually sufficient without the need to deal with the authority.

As soon as you intervene in load-bearing structures, change the appearance of the building, or change the manner of use, you must obtain a permit for the intended project.

The application is submitted on the prescribed form, and you must attach the property owner’s consent and project documentation. Owners often make mistakes when distinguishing between load-bearing and non-load-bearing walls. If the Building Authority discovers an unauthorised intervention, it will initiate proceedings to order removal of the construction.

Amending the Owner’s Declaration in practice

When you change the layout of an apartment in a way that changes its floor area, or you change the purpose of use, you must amend the Owner’s Declaration. The first step is to analyse the existing declaration and determine how the units are defined.

It is necessary to determine how the units and common parts are currently defined in order to prepare the correct amendment.

This is followed by preparing the amendment and a draft owners’ agreement, which must specify precisely what is being changed. Obtaining consents is a crucial phase of the entire process. Consent must be in writing, and if ownership shares are being changed, an agreement of all owners is required.

The SVJ board or an authorised owner then files an application to register the change in the Czech Cadastre of Real Estate. If you do not carry out the change properly, the Cadastre will not register it. A discrepancy will arise between the factual and legal status, which will block a future sale of the apartment or obtaining a mortgage in the Czech Republic.

Case study

This case study shows the situation of Mr Martin, who owns an apartment in a prefabricated panel building and wants to connect the living room with the kitchen by cutting an opening in a load-bearing panel. The SVJ refuses to grant consent, arguing that there has already been enough demolition in the building.

The attorneys at ARROWS advokátní kancelář have experience in overcoming unjustified resistance from SVJs and recommend obtaining an expert structural engineer’s report in such a case.

Calls to action and important contacts

In 2026, construction alterations, permitting procedures, and relationships within an SVJ are a complex area under Czech law. If you want to minimise the risk of multi-million-crown fines and neighbour disputes, we recommend consulting your intended project with a professional.

The attorneys at ARROWS advokátní kancelář will prepare a legal analysis and help you enforce your rights through lawful means under the Czech legal system.

ARROWS advokátní kancelář is insured for professional liability up to CZK 400,000,000, which guarantees the security of our services.

Conclusion of the article

Construction alterations and a change of use of a unit in a building with an SVJ (owners’ association) require careful preparation and knowledge of the current legislation in the Czech Republic. Ignoring the rules can lead to substantial fines, court disputes, and a decrease in the property’s value.

ARROWS, a Prague-based law firm, will provide you with comprehensive legal support—from assessing your plan, through dealings with the authorities and the SVJ, to registration in the Czech Cadastral Register.

Do you need to address construction alterations or a change of use of an apartment? Email us at consultation@arws.cz and let us prepare a legal analysis of your situation.

Read also:

• Changing the Use of Property in Czechia: Procedure Under the New Building Act
• Amending Declarations of Ownership in Czech Residential Co-ownership
• Amending Zoning Plans Under the New Czech Building Act
• Legal and Hydrogeological Requirements for Construction in the Czech Republic
• Legal Framework and Risk Management for Real Estate Development in Czechia