Statybos techninis reglamentas STR 1.04.04:2017 – Building Design and Project Expertise Regulation
The Statybos techninis reglamentas STR 1.04.04:2017, titled „Statinio projektavimas, projekto ekspertizė“ (Building Design, Project Expertise), is a mandatory technical regulation issued by the Ministry of Environment of the Republic of Lithuania. This document establishes the legal framework for building design processes, project documentation structures, and mandatory expertise procedures within the territory of Lithuania. This consolidated version, effective from November 1, 2024, integrates numerous amendments concerning modern technical requirements, including Building Information Modelling (BIM) and accessibility standards for persons with disabilities.
The regulation governs a wide array of activities including the preparation of construction projects, reconstruction, renovation (modernization), major and minor repairs, and building demolition. It defines the specific roles of the statinio projekto vadovas (project manager) and the statinio projekto dalies vadovas (part manager), while detailing the procedures for project approval and registration in the national information system „Infostatyba“. Key document components such as projektiniai pasiūlymai (design proposals), techninis darbo projektas (technical working project), and simplified projects are strictly categorized based on building significance and complexity.
The following sections detail the specific regulatory requirements for project stages, public information, mandatory expertise, and the technical thresholds for project modifications as defined in the official text.
Project Preparation Stages and Documentation
Design documentation in Lithuania is typically prepared in two distinct stages for projects requiring a construction permit, though specific exceptions allow for a single-stage process.
- Projektiniai pasiūlymai (Design Proposals): Initial documents intended to inform the public and obtain specific permit requirements. They must include basic architectural and infrastructure solutions.
- Techninis darbo projektas (Technical Working Project): The comprehensive document used for construction work execution, selecting building products, and assessing compliance with technical regulations.
- One-stage Project: Permitted for simplified projects or cases where a construction permit is not mandatory, merging proposals and technical details.
- BIM Requirements: Per Item 24, certain projects must be prepared using Building Information Modelling methods and submitted in digital BIM formats via „Infostatyba“.
Public Information and Consultation Procedures
Chapter VIII specifies mandatory steps for informing the public about planned construction or reconstruction, except for simple structures and single-family houses.
- Public Notice: Information must be published on the municipality's website and via a physical notice board on the site for no less than 10 working days.
- Notice Board Specifications: The board must be at least 0.5 square meters, weather-resistant, and clearly visible from a public road.
- Public Meeting: Must take place no earlier than 15:00 on a working day and may be conducted remotely via live broadcast.
- Outcome Documentation: The designer must prepare a viešinimo ataskaita (publicity report) detailing how public suggestions were addressed.
Mandatory Building and Project Expertise
Chapter IX and Annex 19 define when an independent expertise (audit) of the design or the physical building is required by law.
- Exceptional Buildings (Ypatingieji statiniai): Mandatory expertise is required for the entire project or specific parts.
- Socially Significant Buildings: Includes hospitals, schools, and apartment buildings, as listed in Annex 4.
- Expertise Types: The regulation distinguishes between bendroji projekto ekspertizė (general project expertise) and dalinė projekto ekspertizė (partial expertise).
- Building Condition Expertise: Mandatory in cases of structural accidents, visible deformations, or when requested by state supervision authorities.
Technical Thresholds and Project Modifications
The regulation defines specific geometric and spatial tolerances that do not require a new construction permit or a full project revision.
- Geometric Tolerance: Changes to building exterior dimensions up to 0.2 meters do not require a new project version, provided boundary distances are maintained.
- Location Tolerance: Shifting the building's position on the plot by up to 0.2 meters is permitted without a new permit.
- Engineering Networks: For engineering structures, a length change of up to 5 percent is permissible without re-permitting.
- Appearance Changes: Changes to facade colors, materials, or the installation of equipment larger than 0.01 cubic meters on roofs in protected areas are considered essential changes requiring approval.
Frequently Asked Questions
When is Building Information Modelling (BIM) mandatory for projects in Lithuania?
Item 24 states that BIM methods are mandatory for design proposals and technical projects in cases determined by Government Resolution No. 1061, with data submitted in open digital formats via Infostatyba.
What is the minimum duration for public display of project proposals?
According to Item 61.6, the public must be given at least 10 working days to become acquainted with project proposals from the date of the announcement on the municipality's website.
Are there size requirements for the construction information board?
Yes, Item 61 requires the information board to be no smaller than 0.5 square meters, made of weather-resistant materials, and installed in a visible location for at least 10 working days.
Can I change building dimensions without a new permit?
Item 42.1 allows for changes in building exterior dimensions up to 0.2 meters without requiring a new project issue, provided that mandatory regulatory distances to plot boundaries are not violated.
Which buildings are considered 'socially significant' under STR 1.04.04:2017?
Annex 4 provides a list including multi-apartment buildings, hotels, administrative buildings, shopping centers, hospitals, schools, and specific infrastructure like airports and power grids.
Who is responsible for the quality of the building project?
Items 41 and 49 specify that the project manager (projekto vadovas) and the project designers (projektuotojai) are responsible for ensuring the project complies with all technical and legal requirements.
