A careful reader of the Urban Planning Code finds sustainability in four consecutive articles. The first three say what a good building should be. The fourth says what a certain kind of building must have, from a certain date. The difference between them seems to me more important than any of the principles, and it is what this piece is about. What the law says comes first; my opinion is marked.
The principles: Articles 403-405
Article 403 requires a building to be designed and built so that its carbon footprint, during construction and in use, and its energy consumption are nearly zero or very low, with the energy coming from renewable sources, including sources on site or nearby (para. 1). Paragraph (2) adds four directions: reusing or recycling materials after demolition, low-impact raw materials, low-energy technologies, renewable sources. What happens to site materials today is covered in construction waste: who pays for it.
Article 404 requires a sustainability strategy, drawn up by the designer as a mandatory part of stage 0 of the investment project. The article refers to lit. o) of Art. 494 para. (1), but Article 494 para. (1) only has lit. a)-c); the likely intended pair is Art. 486 para. (1) lit. o), where the sustainability strategy appears in the content of the strategic brief (and its own cross-reference, to Art. 415, does not fit either: Article 415 is about the register of construcții). The strategy must cover six elements: rational use of resources, minimising pollution and the carbon footprint, a healthy environment, community well-being, biodiversity conservation and process management.
Article 405 defines ecological quality by eight objectives, from fitting into the surrounding environment to air and water quality, and proposes additional indicators, such as the share of recycled materials or the reduction in CO2 emissions. Paragraph (3) ends with a sentence rarely found in a statute: ecological buildings are efficient to maintain and run, and their value grows over time.
The numbers: Article 406
Article 406 is different. It has a timetable and thresholds:
- local councils adopt, by decision, the boundaries of zero-emission and low-emission zones within at most 12 months of the Code coming into force (lit. a);
- from 1 January 2027, permits for buildings or parts of buildings used as offices, retail, industry or storage, including covered car parks, with a built area above 1,000 mp, are conditional on a green roof over at least half of the area (lit. b). The law defines a green roof: vegetation deliberately provided for in the design, above the weatherproofing layer;
- also from 1 January 2027, outdoor car parks above 500 mp belonging to these buildings, and new outdoor car parks open to the public above 500 mp, must include devices for rainwater infiltration or evaporation, such as sustainable drainage systems (lit. c);
- car parks must have trees or shading devices over at least 30% of their area, and the shading devices must produce renewable energy (lit. d);
- none of this applies if it affects architectural heritage or if the requirements cannot be met on technically and economically acceptable terms (lit. e).
My view: one is an intention, the other a condition
Articles 403-405 do not say how much. Nearly zero consumption has no threshold, the eight objectives have no measure, and the indicators are worded in the law itself as possible rather than required. As written, I think they will end up in design statements as paragraphs, not in designs as decisions. An official checking the file has nothing to refuse on: there is no number below which a building is not sustainable.
Article 406 is the only one that can be used to reject something. A 1,200 mp storage hall without a green roof over half its area gets no permit after 1 January 2027, unless it falls within the lit. e) exception. That is a condition, and a condition changes designs.
Two things would make me less sure of its impact.
First, the lit. e) exception itself. What technically and economically acceptable terms means has no criterion in the text. Who decides what is acceptable, and on what basis, is not written. The exception may stay rare or become the normal route, and town-hall practice will decide which, not the law.
Second, lit. d). Unlike lit. b) and c), it has no date and does not say which car parks it applies to: no minimum area, no use. Read alone, it seems to cover any car park. Read next to lit. c), probably the same ones. The text does not settle it, and a shading rule without a clear scope is hard to enforce.
For a house
The dated obligations in Article 406 do not concern housing: lit. b) lists offices, retail, industry and storage, and lit. c) their car parks and car parks open to the public. For a house, what remains is the principles of Articles 403-405 and whatever the technical rules on energy performance require, which this piece does not cover; the document that shows them at permit stage is the NZEB report. Article 404 makes no exception for houses and names the designer. But Article 423 para. (1) lit. b) places stage-0 documentation on the beneficiary, who may contract specialist services, and Article 424 para. (2) says designers have stage-0 responsibilities only under the contract. The text does not reconcile the two. The project stages, each with its budget margin, are described in the budget margin by stage. The strategy is not a document the permit asks for; if you want one, put it in the contract. What the Code contains overall is summarised on the page about Legea 169/2026.
This article is analysis, not legal advice. Provisions are cited from Legea 169/2026, published in Monitorul Oficial no. 661 of 10 August 2026. Check your own situation with the issuing authority. Romanian legal terms are kept in the original, because the Romanian text is the one that governs.