STR 2.02.09:2005 – Lithuanian Building Regulation for Single and Two-Apartment Houses
The building technical regulation STR 2.02.09:2005, titled Vienbučiai ir dvibučiai gyvenamieji pastatai (Single and Two-Apartment Residential Buildings), establishes the minimum technical requirements for the design and construction of individual residential houses in Lithuania. Issued by the Ministry of Environment of the Republic of Lithuania, this regulation is a statutory document under the Law on Construction (Lietuvos Respublikos statybos įstatymas). The current consolidated version incorporates all amendments up to February 8, 2018, ensuring alignment with contemporary European standards for structural safety and energy efficiency.
The regulatory scope encompasses new construction, reconstruction, and major repairs of single-family houses, two-family houses, and terraced or semi-detached residential units defined as Namas. It details mandatory spatial planning for residential plots, including maximum building density, building intensities, and minimum distances to boundaries. The document specifically defines internal requirements such as mandatory room compositions, minimum ceiling heights, natural lighting coefficients, and solar exposure durations, alongside technical specifications for engineering systems including heating, water supply, and electrical installations.
Professional practitioners and property owners can find detailed normative values within the technical annexes, which provide precise measurements for sanitary distances between buildings, tree planting clearances, and lighting parameters. This document serves as the primary technical reference for building permit applications and compliance checks in the residential sector.
Plot Layout and Building Placement
Section IV and Annex 8 define the spatial distribution of structures on a residential plot. Placement must not infringe upon the interests of neighboring plot owners and must adhere to established red lines and boundaries.
- Boundary Clearance: Buildings must maintain a minimum distance of 3 meters from the plot boundary. For buildings taller than 8.5 meters, this distance increases by 0.5 meters for every additional meter of building height.
- Building Density: The maximum allowed užstatymo tankis is determined by plot size, starting at 40% for plots up to 400 m² and decreasing as plot size increases (Annex 9).
- Sanitary Distances: Residential houses must be separated from specific structures such as stables (10m), greenhouses (15m), and outdoor toilets (10m) as per Annex 2.
- Vegetation Clearances: Shrubs must be planted at least 1 meter from boundaries, while trees under 3 meters tall require a 2-meter clearance, and larger trees require 3 meters.
Internal Room Requirements and Dimensions
Section V outlines the mandatory composition and functional requirements for residential units. Every dwelling must facilitate primary activities including rest, sleep, hygiene, and food preparation.
- Mandatory Rooms: A standard apartment must include at least one living room, a kitchen (or kitchen-niche), a bathroom, a toilet, and storage space.
- Ceiling Heights: Living rooms, kitchens, and sanitary facilities require a minimum height of 2.5 meters. Attic rooms with sloped ceilings must maintain at least 2.0 meters at work areas (Annex 4).
- Insolation: At least one room in a 1-3 room house must receive a minimum of 2.5 hours of direct sunlight on March 22 or September 22.
- Natural Lighting: The ratio of glazed surface area to floor area must be at least 1:6 for living rooms and 1:8 for kitchens.
Engineering Systems and Safety
Engineering requirements cover the supply of utilities and the mitigation of risks related to building use, including mechanical stability and fire safety.
- Water Supply: The regulation specifies a minimum drinking water supply of 200 liters per person per day.
- Waste Management: Solid waste must be collected in containers placed on water-impermeable surfaces with a slope not exceeding 10%.
- Stair Safety: Internal stairs must have a maximum step height of 0.20m and a minimum depth of 0.25m. External stairs are limited to a 0.15m height and 0.30m depth.
- Electrical Systems: Every room must have a ceiling or wall light controlled by a switch, with sockets positioned no further than 4 meters from any point in the room.
Frequently Asked Questions
What is the minimum ceiling height for a new residential living room?
According to Annex 4 of STR 2.02.09:2005, the minimum ceiling height for living rooms, kitchens, and sanitary rooms is 2.5 meters.
How far must a house be built from the neighbor's plot boundary?
A minimum distance of 3 meters is required. If the building height exceeds 8.5 meters, the distance must be increased by 0.5 meters for every additional meter of height.
What are the solar exposure requirements for residential rooms?
At least one room in a 1-3 room house must receive at least 2.5 hours of direct sunlight on March 22 or September 22.
How is the maximum building density calculated for a residential plot?
Building density is based on plot size; for example, plots up to 400 m² have a maximum density of 40%, while 1500 m² plots are limited to 25%.
What is the minimum water consumption value used for system design?
The regulation sets a minimum drinkable water requirement of 200 liters per person per day.
Are there height restrictions for fences in Lithuania?
Fences up to 2 meters high are classified as simple structures (nesudėtingi statiniai) and must comply with STR 1.01.07:2002 regarding placement and boundary lines.
