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What you can build without a permit in Romania in 2026, and where the 15 m² myth comes from
No, a cabin "under 15 m²" does not skip the paperwork. What Romania's new Urbanism Code allows with no formality at all, what a village plot allows on a notification, what still needs a permit, and what you risk by skipping the town hall.
Published: September 2, 2026Updated: September 30, 20265 min read
The short answer: since 25 August 2026, construction permitting in Romania falls under the new Code of spatial planning, urbanism and construction, which replaced Law 50/1991. The basic rule has not changed: a new structure goes through the town hall, and the "magic" 15 m² threshold below which "nothing is required" is still a myth. What has changed: a few works need no formality at all, and in villages some structures, including a ground-floor-only house of up to 150 m², only need a notification.
Below: what you can do with no paperwork, what works on a notification, what still needs a permit, how houses on wheels and containers are treated, and what you risk by skipping the town hall.
Where the 15 m² myth comes from
The most likely source is a mix of rules: some EU countries do have thresholds for minor garden buildings, and "no-permit cabin" ads turned that into a convenient sales pitch that the law does not back.
Law 169/2026, the new Code, has no general area threshold under which a new building would be exempt. It does have thresholds, but for specific categories and with conditions: 20 m² for demountable outbuildings in villages, 50 m² for outbuildings on a notification, 150 m² for a house on a notification. None of them means "below this size nothing is needed".
What you can do with no formality at all
An indicative list (the exact text is in the Code and at your town hall), outside protected areas: repairs to fences and roofs that keep their shape, replacing windows and doors while keeping the openings, painting and finishes that do not change the facade or its colours, interior finishes, stoves, interior installations and connections within your property, boilers and air conditioners, demountable terraces and pergolas, and photovoltaic or solar panels, the latter with prior notice to the town hall.
The novelty is in villages: outbuildings without a foundation, demountable, on a timber or metal frame (a shed, a summer kitchen, a covered terrace), of at most 20 m² in total and 2.5 m high, need neither a permit nor a notification. Planning rules still apply, and so do a handover inspection at the end and declaring it at the town hall. A new dwelling is not on the list, however small.
What works on a notification
The notification is the new, shorter procedure: you file a form and a simplified design by qualified professionals, and if the town hall does not answer within the legal term, it counts as approved. Outside protected areas and monument protection zones it covers some works on an existing house (a rebuilt roof, an attic converted inside the existing roof without changing the volume, an energy retrofit, a bathroom or technical room of up to 25 m²) and, only in villages and within the built-up area, new structures.
The new structures allowed on a notification are outbuildings (a garage, a summer kitchen, a covered terrace, a pool) of up to 50 m² in total, outside villages in metropolitan areas, and one house with a ground floor only, or a semi-basement plus ground floor, of up to 150 m² of gross floor area, with an architect's design endorsed by the county chief architect. The conditions, the documents and what the text leaves unclear are in our guide to the 150 m² house on a notification.
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What still needs a permit
Every other new building: any house in a town, any house over 150 m², a house with an upper floor and, on the current text, one with an attic floor, any building in a protected area, and outbuildings that fall outside the thresholds above. The same goes for extensions that enlarge the house, structural changes and changes of use that involve works.
Area alone exempts nothing: a 14 m² cabin on a foundation is a building in the legal sense exactly like a 140 m² one. If your case feels unclear, request an urban planning certificate, which states in writing what your plot allows; we described the road from plot to permit step by step.
Houses on wheels and containers: where the grey zone is
The Code calls a construction "any structure fixed in or on the ground" and no longer issues temporary permits. A temporary structure, with or without a foundation, needs a permit or a notification, and the Code names containers among temporary structures; the only exception is the demountable village outbuilding of up to 20 m². What differs between a lived-in container and a SIP house is set out in our comparison of the two.
Houses on wheels used as homes do not appear in the Code: one registered as a trailer formally remains a vehicle. Practice is less rosy: without a permit or a notification there is no land-registry entry, so you cannot sell it as real estate or mortgage it, and town halls differ on when a mobile home hooked up to utilities and set on blocks becomes a construction. Check your town hall's position before, not after; the choice between a tiny house on wheels and a small house on a foundation has its own guide.
What you risk by building without papers
Building without a permit or a notification is fined and can end in demolition at your own expense. The Code adds a regularization permit: a single-family house of ground floor, or ground floor plus one storey, of up to 150 m² of gross floor area, not a monument and not in a protected area, can be legalized only if it meets every planning, environmental and quality rule. Otherwise demolition follows, in whole or in part; where technical solutions exist, the town hall can require the building to be brought into line. During the Code's first year, regularization is also open to other buildings, at much higher fees, and the building tax rises until the building is regularized.
Even if nobody reports you, without papers the house does not exist legally: you cannot insure it as a building, pass it on cleanly, or sell it at house value.
The right path to a small house
For a compact house, the legal road has become shorter: in a village, a ground-floor-only house can go on a notification, while in a town or with an upper floor it still needs a permit. Which of our catalogue designs fit is in our notification guide, and what the full package costs is in our turnkey price guide.
If you want a quick check of what your plot allows, message us on WhatsApp; we will tell you honestly which road you are on, notification or permit.
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