Berlin 2026: “Gesetz für einfaches Bauen”, SBG changes to BauO Bln, and how the Bau‑Turbo works

Dates, laws and scope

Two separate reforms matter in Berlin right now.

First, the Schneller‑Bauen‑Gesetz (SBG) was published in the Berlin Law Gazette on 21 December 2024 and entered into force on 22 December 2024. It is an article law that amends multiple Berlin statutes, including the Bauordnung für Berlin (BauO Bln), and it introduced faster procedures and several material relaxations, among them a lower standard room height. ([ak-berlin.de](https://www.ak-berlin.de/fileadmin/user_upload/Fachthemen_Gesetze_Normen_und_Verordnungen/Schneller-Bauen-Gesetz_-_SBG.pdf))

Second, the Gesetz für einfaches Bauen (GEB) is Berlin’s 2026 follow‑on package. The Senate adopted the bill on 12 May 2026; the Abgeordnetenhaus passed it on 2 July 2026; it was published on 22 July 2026 and came into force on 23 July 2026 (some cross‑references start on 20 January 2027). The GEB again amends the BauO Bln, the Denkmalschutzgesetz, the Ausführungsgesetz zum Baugesetzbuch (AGBauGB) and the Landesorganisationsgesetz (LOG). ([berlin.de](https://www.berlin.de/rbmskzl/aktuelles/pressemitteilungen/2026/pressemitteilung.1670414.php))

The federal “Bau‑Turbo” is a different instrument. It is § 246e of the federal Baugesetzbuch (BauGB), in force since 30 October 2025, which lets municipalities approve housing faster, even without a new Bebauungsplan, subject to safeguards. Berlin’s 2026 GEB also adds process tools to help use the Bau‑Turbo locally. ([bundesregierung.de](https://www.bundesregierung.de/breg-de/aktuelles/wohnungsbau-turbo-2354894))

What Berlin lowered for conversions and loft build‑outs (BauO Bln since 23 July 2026)

Abstandsflächen waived in key cases (§ 6(12)). Where legal existing buildings are converted to residential use, where the attic is built out, or where a building is up‑built for the first time by one storey, the usual setback envelopes (Abstandsflächen) do not apply. This can unlock tight inner‑block attics and make one‑storey add‑ons feasible where distances would have blocked them. Effective since 23 July 2026. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

Playground requirement relaxed for stock projects (§ 8(4)). If a lawful existing building is (i) converted to residential, (ii) up‑built by up to two storeys, (iii) the attic is retrofitted, or (iv) extra flats are created by splitting units, then the obligation to provide a children’s playground on the plot does not apply where this is impossible or only possible with great difficulty. Since 23 July 2026. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

Second escape route exception for ground‑floor single‑storey units (§ 33(1) new sentence). A second escape route is not required for single‑storey, at‑grade units up to 400 m² if a direct exit to the outside is available. This can simplify ground‑floor commercial‑to‑residential conversions. Since 23 July 2026. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

Attic room height aligned to 2.20 m and “net floor area” term updated (§ 47). For rooms in the roof space, the minimum clear height dropped from 2.30 m to 2.20 m over at least half of the net room area (term updated to Netto‑Raumfläche). This is in addition to the SBG’s earlier city‑wide standard height reduction for rooms generally to 2.40 m. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

Fire‑safety standards for stock conversions and up‑builds eased with conditions (§ 48(5)–(7)). When existing lawful buildings are converted to residential use, key BauO‑Bln parts on setbacks and several construction requirements do not have to be retrofitted to the new code on existing elements. If a building moves up a class due to an attic build‑out or up‑build to residential, the existing structure can, under conditions, meet the lower (class 3) fire‑resistance levels; for a one‑storey up‑build, class‑3 fire‑resistance is enough for that added storey. Conditions include proper rescue routes, self‑closing, smoke‑tight doors to cellars, smoke extraction of the necessary stair, and suitable new flat entrance doors where combustible stair elements exist. Since 23 July 2026. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

Bike/pram storage redesigned; flat‑by‑flat storage dropped (§ 48(2)). The per‑apartment storage obligation was pared back; in buildings of classes 3–5, accessible storage for wheelchairs, rollators and prams, plus bicycle storage, must be provided, rather than a blanket per‑flat rule. Since 23 July 2026. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

These 2026 changes sit on top of the SBG’s end‑2024 measures, including the uniform room‑height rule (2.40 m) and new tools like “Bauantragskonferenzen” to coordinate authorities early. ([berlin.de](https://www.berlin.de/sen/bauen/baurecht-und-bauplanung/schneller-bauen-gesetz/gesetzliche-aenderungen-1508275.php))

How the federal Bau‑Turbo works — and Berlin’s add‑ons

The Bau‑Turbo is § 246e BauGB, a time‑limited experiment clause through 31 December 2030. A municipality may decide to apply it to specific housing projects. If it does, it can approve housing without first preparing or changing a Bebauungsplan, or it can depart from existing plans, provided a brief screening shows no additional significant environmental impacts, neighbour interests are weighed, and the deviation is actually necessary to accelerate the project. The law targets new housing but also explicitly supports extensions, up‑builds and conversions to housing. The federal government expects decisions after a three‑month municipal review. In force since 30 October 2025. ([bundesregierung.de](https://www.bundesregierung.de/breg-de/aktuelles/wohnungsbau-turbo-2354894))

Important limits. The Bau‑Turbo does not override state building codes (e.g., Berlin’s BauO Bln); it modifies planning law only. Projects must still comply with the BauO Bln (as relaxed by the SBG/GEB). This is stated in state guidance on § 246e. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/baugb/baugbaendg25.htm?utm_source=openai))

Berlin has aligned its own procedures to make the Bau‑Turbo usable. The GEB amended the Landesorganisationsgesetz to impose a default one‑month deadline for written statements by participating authorities and enables clearer responsibility for statements under the AGBauGB. The Senate also announced a “Quick‑check”, a case database and a taskforce to support boroughs when they apply § 246e. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

What this means for you. In practice, an investor or condominium association planning an attic build‑out or a commercial‑to‑residential conversion should first test whether the project fits under ordinary planning law. If it does not (for example, it conflicts with an old Bebauungsplan), you can ask the borough to consider opening a § 246e track. Expect a screening on environmental effects and neighbour impacts, then a coordinated three‑month review. Use of § 246e is discretionary, and legal challenges are possible if the tests are weak. Work with a local architect as “Entwurfsverfasser/in” and, where § 246e is in play, instruct a lawyer specialised in public construction and planning law. ([bundesregierung.de](https://www.bundesregierung.de/breg-de/aktuelles/wohnungsbau-turbo-2354894))

Practical cautions for foreign buyers and expatriates

- Monument protection and WEG rules still apply. Even with GEB relaxations, listed buildings and condominium bylaws can restrict dormers, terraces, or roof penetrations. Use a Berlin architect, a structural engineer, and a fire‑safety consultant early. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

- Fire‑safety carve‑outs are conditional. The class‑3 fire‑resistance relief for existing structures in § 48 requires specific measures (rescue routes, stair smoke extraction, self‑closing doors). Budget for these works and get approvals in writing. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/laender/berlin/z26_0692.htm))

- Room‑height rules differ by context. Standard rooms are 2.40 m since 22 December 2024; in attics, 2.20 m since 23 July 2026. Confirm which applies to each room on your plan. ([berlin.de](https://www.berlin.de/sen/bauen/baurecht-und-bauplanung/schneller-bauen-gesetz/gesetzliche-aenderungen-1508275.php))

- The Bau‑Turbo is powerful but not a silver bullet. It does not excuse non‑compliance with the BauO Bln and is open to judicial review. Use it selectively and document the environmental and neighbour‑impact screening. ([umwelt-online.de](https://www.umwelt-online.de/regelwerk/bau/baugb/baugbaendg25.htm?utm_source=openai))

This article is an overview, not legal advice. For project decisions, consult a Berlin‑licensed architect (Entwurfsverfasser/in) and a lawyer specialised in public construction and planning law.