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Information model-based permit processing

Building control has started to utilise information models in the processing of building permits. Here you will find instructions on information model content and permit point transactions.

On 1 January 2026, the building control department of the municipality of Tuusula switched to an information model-based building permit process. Building permits can be applied for via the municipal building control department’s online service (Lupapiste.fi) using a plan model or, alternatively, by submitting the information in machine-readable format.

A data model refers to information presented in 3D format about a building or construction site, including the location, geometry and shape of the building. The model also includes information about the construction site, the building, building components and their properties. The information model shell is added to the 3D municipal map (Kunta3D), resulting in a realistic and up-to-date city model of Tuusula.

Ways to apply for a building permit

The Building Act allows for two ways of applying for a building permit based on an information model: using a plan model or machine-readable data. At the beginning of 2026, building control service systems and software will not yet be fully ready to utilise the information model-based process.

The Tuusula municipal building control department recommends that permit applicants proceed in accordance with option 1 (as recommended by the system supplier) until the definition and standardisation of information model data content and the related inspection regulations have been updated.

However, the building control authority accepts information models as attachments to permit applications for the development of information model-based processes, provided that the project plans have been produced using modelling.

Option 1: Data is provided in machine-readable format

When the applicant has selected option 1 in the municipal building control electronic service: ‘information in machine-readable format’, the applicant must manually fill in the core information required by the regulation in accordance with Annexes 1 and 3 in the text fields of the e-service. The core information is more extensive than previous register information. The information in the fields can be read by machine and submitted to the municipal register and on to Ryhti. (Association of Finnish Local and Regional Authorities guidelines)

Main drawings (in PDF format):

  • site plan
  • facade drawing
  • floor plan
  • cutting drawing.

Information in machine-readable format:

  • key information (to be filled in manually in the Lupapiste application under the project description tab)
  • premises

Option 2: Information is provided using a plan template

If a permit is applied for on the basis of a data model, the file format used for the data model submitted with the permit application must be Industry Foundation Classes (IFC) version 4.3.2.0 or later. If the permit is applied for on the basis of IFC, the IFC model must be produced with standardised data content. The building model must contain core data and must meet the requirements of Annexes 1, 2 and 3 to the Decree of the Ministry of the Environment (1340/2025). The design model must be at the main drawing level. There are two different definitions of the main drawing level, depending on the nature of the project: new construction or renovation.

Appendix 1: Core data for main drawing level plans and as-built models, and machine-readable core data

Appendix 2: Location, space and component information for master plan-level design and implementation models

Appendix 3: Machine-readable information on premises and components

Main drawings (in PDF format):

  • site plan
  • facade drawing
  • floor plan
  • cutting drawing.

Plan template (IFC 4.3.2.0):

  • building site plan template (YmA 1340/2025, Section 7)
  • building plan template (location, spaces, structural elements)

Main drawings always in PDF format

In both cases, the main drawings must be attached to the permit application in PDF format, even if the permit is being applied for using a model plan.

There is no obligation to submit special plans as IFC data models, even if the building plan has been submitted as an IFC data model in accordance with the regulation.

If you wish to submit special plans in IFC format in accordance with option 2, they must meet the requirements of Annexes 4 and 5 of the Ministry of the Environment Decree (1340/2025).

Appendix 4: Core data and machine-readable core data for special plan data models and as-built models

Appendix 5: Location, component and system information for special plan information models and as-built models

Exporting the plan template to Lupapiste

The guidelines created by Järvenpää Building Control for data model-based permit processing can be utilised when submitting data models. The use of these guidelines has been agreed with the City of Järvenpää.

The content requirements for the information model are presented in section 2. Section 3 contains instructions for exporting the information model to the permit point.

The instructions on this page will be updated later, once Lupapiste is ready to receive data models.

For more information on applying for a permit based on a data model, please visit the following websites:

This content has been translated using AI