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Guide · Houses up to 400 m²

Occupancy permit for a house up to 400 m²

A step-by-step procedure for family houses — less complex buildings under the new Building Act.

NN 155/2025 For investors and designers 2026 procedure

If you have built a family house, your building is most likely a less complex building — a residential building with at most two dwellings whose gross floor area does not exceed 400 m² Art. 3 pt. 32. The simplest procedure for obtaining an occupancy permit applies to it.

Key point

The technical inspection of the house does not check the fulfilment of the basic requirements for the building Art. 94 para. 3 — it only establishes that construction conforms to the location conditions: purpose, maximum external dimensions, the shape and size of the plot, and the position of the house on the plot Art. 97 para. 2.

Only the investor is summoned to the technical inspection Art. 98 para. 3, and the permit is issued within 8 days of the completed inspection Art. 102 para. 2.

All cited articles (Art.) refer to the Building Act (Official Gazette NN 155/2025).


The procedure in four steps

  1. Application for the occupancy permit

    The party to the proceedings is the investor or the owner of the building Art. 96. The application is filed electronically, and all attachments are enclosed in electronic form Art. 95 para. 5.

  2. Technical inspection

    The building authority carries out the inspection within 30, or 15, days of receiving a complete application Art. 98 para. 1. For a house, only the investor is summoned Art. 98 para. 3, and only conformity with the location conditions is checked Art. 97 para. 2. A record is drawn up about the inspection Art. 99.

  3. Issuance of the occupancy permit

    The permit is issued within 8 days of the completed technical inspection if the house is found to be built in accordance with the location conditions from the building permit and the preliminary design Art. 102 para. 2.

  4. Recording in the cadastre and the land register

    The building authority sends the enforceable occupancy permit and the geodetic survey to the cadastral office electronically; on this basis the house is entered in the cadastre and the land register Art. 106.


What is enclosed with the application

For a less complex building, the following documents are enclosed with the application for the occupancy permit — together with the statutory list Art. 95 para. 1 and the usual administrative attachments:

  • all building permits with all amendments and supplements — from the first to the last — with the accompanying confirmations of finality (enforceability)
  • proof of payment of the administrative fee
  • details of the construction participants
  • written statements from all contractors who took part in the construction about the building works carried out that are subject to professional supervision, certified with a qualified electronic signature
  • written statements from all contractors of electrical and mechanical works, certified with a qualified electronic signature
  • the programme and manner of maintaining the building and installed equipment (building works contractor)
  • the programme and manner of maintaining the building and installed equipment (electrical and mechanical works contractor)
  • final reports from all supervising engineers who took part in the construction — on the execution of the building for mechanical resistance and stability
  • a statement from the licensed geodetic engineer that the building is located on the building plot in accordance with the building permit
  • an as-built geodetic survey of the building (with break points in GML format, in electronic form)
  • the building’s energy performance certificate, if the building must meet energy-efficiency requirements
  • the contractor’s proof of proper disposal of unused building material and handling of construction waste

What the inspection checks — and what it does not

What is checked

Only that construction conforms to the location conditions set out in the building permit and the preliminary design: purpose, maximum external dimensions of above-ground and underground parts, the shape and size of the building plot, and the position of the house on the plot Art. 97 para. 2, Art. 102 para. 2.

What is not checked

The fulfilment of the basic requirements for the building — for a less complex building this is not the subject of the technical inspection Art. 94 para. 3. This makes the procedure for houses considerably easier than for multi-apartment and other buildings.

Change in plot shapeIf the shape of the building plot has subsequently changed without the investor’s influence (e.g. due to a road or other infrastructure), this does not affect the issuance of the occupancy permit Art. 102 para. 3.

Deadline and remedying defects

The occupancy permit is issued within 8 days of the completed technical inspection Art. 102 para. 2.

If a defect is found during the inspection that can be remedied without amending the building permit or the detailed design, an appropriate deadline for remedy is set — up to 90 days. Once it is remedied, the investor notifies the authority so that the inspection can continue Art. 100.

Need documentation for the technical inspection of a house?

DoT. d.o.o. prepares the final documentation, the as-built geodetic survey and the energy performance certificate, and manages the procedure for obtaining the occupancy permit.

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Note: this guide is informational and does not replace consulting the applicable regulations. For any specific case, the current text of the Building Act and its implementing ordinances always applies.