Building Permits for Garden Buildings and Log Houses in Lithuania: What You Need to Know
Do you need a building permit for a garden house or log cabin in Lithuania? The 2026 rules explained: the 50 m² threshold, Group I and II simple structures, boundary distances and protected areas.
If you are planning to put up a garden building, summer house, or log cabin in Lithuania, the first question is almost always the same: do I need a building permit? The honest answer is that it depends — on the size of the building, on what you will use it for, and on where your plot is. And since 1 November 2024, when significant amendments to the Construction Law and its technical regulations (STR) came into force, the thresholds are stricter than many buyers remember.
Key thresholds at a glance (rules checked on 24 September 2026; see the sources at the end):
| Building type | Group I simple structure | Group II simple structure | Building permit (SLD) |
|---|---|---|---|
| Garden house (sodo namas) on a garden-community plot | Up to 50 m² total floor area and 5 m high | No Group II — anything larger is an ordinary (neypatingasis) building | Group I: not required. Larger: always required, with a design project |
| Outbuilding without living rooms (shed, garage, sauna, workshop, summer kitchen) | Up to 50 m² and 5 m | Up to 80 m² and 8.5 m | Group I: not required. Group II: required only in a city, protected or heritage territory (see below) |
| Other non-residential building | Up to 50 m² and 5 m | Up to 80 m² and 8.5 m | As for outbuildings |
| Greenhouse | Up to 80 m² and 5 m | — | Not required |
| One- or two-family house | — | Up to 50 m² and 5 m | Always required, whatever the size or location |
| Gazebo (pavėsinė), carport canopy (stoginė), terrace | Engineering structures: classed by the coefficient K = area × height³ (Group I: K 10–10,000; terraces 10–100 m²) | Group I: not required | |
| Resorts (e.g. Palanga, Neringa, Druskininkai, Birštonas) | Group I buildings are treated as Group II | Group II rules apply | |
This guide summarises the rules as they stand in 2026: what counts as a simple structure (nesudėtingas statinys), when you can build with no paperwork at all, when a design project and a permit document (statybą leidžiantis dokumentas) are required, how close to the plot boundary you may build, and what changes inside protected territories. If you remember one number, make it 50 square metres.
The 2024 Rule Change: The Permit-Free Threshold Dropped from 80 m² to 50 m²
For years the rule of thumb was comfortable: a garden house of up to 80 m² and up to 8.5 m high was a Group I simple structure and could usually be built without a permit. That changed on 1 November 2024, when the new Annex 5 of STR 1.01.03:2017 lowered the garden-house limits to 50 m² of total floor area and 5.0 m of height. Total floor area (bendras plotas) counts all storeys, attic rooms and linked annexes, excluding only a basement — so a sleeping loft counts towards the 50 m².
There is a transitional rule of thumb: the State Territorial Planning and Construction Inspectorate (VTPSI) has explained that the legality of construction is judged by the rules in force when work started, so a garden house of up to 80 m² whose construction started before 1 November 2024 does not need a permit if none was required at the start. You must be able to prove when work began — for example by registering the unfinished structure. For anything ordered new in 2026, plan around the 50 m² limit from day one.
What Is a Simple Structure? Group I and Group II Explained
The Law on Construction defines a simple structure (nesudėtingasis statinys) as a building of simple construction with a maximum height of 8.5 m, a total floor area of all storeys, attic rooms and linked annexes of no more than 80 m², and a basement of no more than one storey. STR 1.01.03:2017 then splits simple buildings into two groups by type:
- Garden houses: Group I only — up to 50 m² and 5 m. There is no Group II for garden houses, so a larger garden house is an ordinary (neypatingasis) building.
- Outbuildings without living rooms and other non-residential buildings (sheds, garages, saunas, workshops, summer kitchens): Group I up to 50 m² and 5 m; Group II up to 80 m² and 8.5 m.
- Greenhouses: Group I up to 80 m² and 5 m.
- One- and two-family houses: Group II only, up to 50 m² and 5 m — and they always need a permit.
Anything that exceeds these limits is an ordinary building, with a full design project and permit required. In resorts, Group I buildings are reclassified as Group II.
When You Can Build a Garden House Without a Permit
Since 1 November 2024 the Law on Construction no longer requires a statybą leidžiantis dokumentas for any Group I simple structure — the permit requirement for simple structures is now tied to Group II buildings in specific territories and to residential buildings. A garden house or outbuilding can therefore normally be built without a permit when all of the following are true:
- Total floor area does not exceed 50 m² and height does not exceed 5 m (Group I).
- The building is non-residential — a seasonal garden house, storage building, workshop or sauna, not a declared home.
- The plot is not in a resort, where Group I buildings count as Group II.
- The building respects the minimum distances to the plot boundary, or you have your neighbour's written consent.
- It complies with the plot's special land-use conditions and territorial planning documents; in state parks and state reserves (draustiniai) simple structures must also meet the special requirements of the protected-area regulations.
An outbuilding such as a 60 m² sauna or double garage is Group II. It too needs no permit, unless the plot lies in one of the territories listed in the next section. A gazebo (pavėsinė) or a carport canopy (stoginė) is not assessed by the 50 m² / 5 m limits at all: it is an engineering structure, classed by the coefficient K = area × height³ — Group I from 10 to 10,000, Group II above 10,000 up to 40,000; below 10 it is not treated as a simple structure at all. A 16 m² gazebo 3 m high, for example, has K = 432.
When You Do Need a Design Project and a Permit
A design project and a permit document are required in a number of clearly defined situations:
- Any residential building. Under Article 27 of the Law on Construction a new one- or two-family house needs a permit even when it is small enough to count as a simple structure — so a log house you intend to live in always needs one, even at 40 m².
- A garden house over 50 m² or over 5 m high — it is no longer a simple structure, so a design project and a permit are required.
- A Group II simple structure (for example an outbuilding of 50–80 m²) in a city; in a conservation-priority or complex protected territory; in the buffer protection zone of a natural heritage object, state park, state reserve, draustinis or biosphere reserve; in a Natura 2000 territory when not built at a homestead (sodyba); in a World Heritage territory; or in a cultural heritage object's territory or heritage site.
- A Group I building in a resort — in resorts such as Palanga, Neringa, Birštonas and Druskininkai it counts as Group II, and the Group II rules above apply.
A Group II structure in a cultural heritage protection zone or within the zone of a trunk gas pipeline needs no permit, but you must notify the start of construction in the Infostatyba system and build to a registered design project. Where a permit is required, the application is based on a design project prepared by a qualified designer.
Distances to the Plot Boundary: The 3-Metre Rule
Permit or no permit, boundary distances always apply. Under STR 1.05.01:2017 (Annex 7), you need the written consent of the neighbouring plot's owner to build a building or a roofed structure closer than 1 m to the boundary, and also between 1 m and 3 m from it if any point of the structure in that zone is higher — measured from the ground at the boundary — than its horizontal distance to the boundary. In practice: at 1 m the structure may be 1 m high, at 2.5 m it may be 2.5 m high.
On plots with a one- or two-family house, STR 2.02.09:2005 adds that at 3 m from the boundary no part of a building may be higher than 8.5 m, with 0.5 m more distance for every additional metre of height; these distances can be reduced with the neighbour's written consent. That regulation is due to lapse on 1 January 2027, so check which rule applies when you build.
Separately, the fire-safety rules set minimum distances between buildings of 6 m to 15 m depending on their fire-resistance degree — 15 m between two buildings of the lowest degree (III). There are exceptions that matter for garden buildings: between houses, garden houses and other buildings on the same plot the distances are not regulated, and between such buildings on neighbouring plots they may be waived if their combined footprint stays within one fire compartment. Ask your designer to check this early on a small plot.
Building in a Garden Community (Mėgėjų Sodo Teritorija)
The classic case is a sodo namelis in a garden community. A garden house of up to 50 m² total floor area and up to 5 m in height on a garden plot is a Group I simple structure and can be built without a permit. Above those limits there is no intermediate category: a bigger garden house is an ordinary building needing a design project and a permit. Buildings on garden plots should be kept at least 3 m from the boundary unless they meet the 1–3 m height rule above or you have written neighbour consent.
The picture changes if you want to live in it: a declared, year-round dwelling brings residential requirements — a design project, a permit, and energy-performance obligations. If permanent living is the plan, design for it from the start.
Protected Territories, Resorts and Heritage Sites
Lithuania has an extensive network of saugomos teritorijos — national and regional parks, reserves (draustiniai), Natura 2000 areas — plus resort towns and cultural heritage sites, and each layer can tighten the rules. Under the current Law on Construction the permit requirement bites on Group II buildings (and on all residential buildings) in these territories, while in resorts Group I buildings are treated as Group II. Protected-area regulations and heritage protection requirements can still restrict what and where you build, even when no permit is needed.
Before ordering anything, check what regime applies to your plot — via your Registrų centras extract or a short enquiry to the municipal architecture department. Ten minutes here can save months later.
How Permits Are Issued: Infostatyba and planuojustatau.lt
Where a permit is needed, the application is submitted electronically through the state information system Infostatyba, now accessed via the Territorial Planning and Construction Gateway at planuojustatau.lt (the old planuojustatyti.lt address points there). You upload the design project, plot documents, and any required consents; the municipality and the relevant checking institutions then review the application.
After construction, buildings built under a permit go through completion procedures, and even permit-free buildings can be registered: cadastral measurements plus a completion declaration, which the owner may choose to file, allow the building to be entered in the Real Property Register at Registrų centras — worth doing, as it matters when you sell, mortgage, or insure the property.
What This Means When Choosing Your Building
In practice, the 50 m² threshold draws a clear line through any catalogue. Compact models such as the Kemi 4×3 m (12 m² footprint) or the Brenzo 5.95×5.95 m (35.4 m² footprint, 2.9 m high) sit comfortably in Group I territory on an ordinary plot. A large residential model such as the Granada 12×8 m is firmly in design-project-and-permit territory — entirely normal for a house of that scale, but budget a few extra months for design and permitting.
Specification matters too. A permit-free weekend garden house is often fine with 44 mm walls, while year-round use points toward 70 mm or double-wall 44+44 / 70+70 mm construction — our guide to choosing the right wall thickness walks through the options. Every Satus Baltic building is manufactured to order in Vydmantai from FSC-certified timber, so we can supply the drawings and specifications your designer needs, and adjust dimensions and roof height so a model lands on the right side of the 50 m² and 5 m lines.
Important: Always Confirm With Your Municipality
This article is general information reflecting the rules as we understand them in 2026, not legal advice. Requirements differ between municipalities, territorial planning documents can add restrictions to individual plots, and regulations change over time. Before ordering or starting any construction, confirm the requirements for your specific plot with your municipal administration's architecture and urban planning department or the State Territorial Planning and Construction Inspectorate (VTPSI).
Once you know what your plot allows, the rest is enjoyable. Browse the full catalogue of garden buildings, log cabins, and wooden houses — every model can be customised in size and specification — or request a personal quote and our team will prepare it by hand within one business day.
Sources
- Law on Construction of the Republic of Lithuania (Statybos įstatymas) No. I-1240, consolidated version — Art. 2(30), 27, 28 (e-tar.lt)
- STR 1.01.03:2017 „Statinių ir patalpų klasifikavimas“ — Annex 5, Tables 1 and 2 (e-tar.lt)
- STR 1.01.03:2017 — list of consolidated versions, incl. the version valid until 31 October 2024 (e-tar.lt)
- STR 1.05.01:2017 „Statybą leidžiantys dokumentai…“ — Annex 7, neighbour consents (e-tar.lt)
- STR 2.02.09:2005 „Vienbučiai ir dvibučiai gyvenamieji pastatai“ — Annex 8, distances to the plot boundary (e-tar.lt)
- Fire Safety Basic Requirements (Gaisrinės saugos pagrindiniai reikalavimai), Order No. 1-338 — points 92–93, Table 6 (e-tar.lt)
- VTPSI — Completing a garden house started before 1 November 2024 (consultation of 9 July 2024)
- VTPSI — Distances from the plot boundary depending on building height
- Territorial Planning and Construction Gateway (planuojustatau.lt) — Infostatyba services
Rules checked against these sources on 24 September 2026.
