What a German client never has to be told.
German construction practice rests on a handful of institutions and documents that no one here explains, because everyone here grew up with them. For a client from abroad they are the difference between a project that moves and one that stalls at the authority. This page sets out four of them: the chamber of architects, the building application, the fee stages of the HOAI, and the standing of an expert report. German terms are kept in the original, because translating them tends to lose exactly the part that matters legally.
German speakers: the corresponding German page is more detailed, HOAI-Leistungsphasen 1 bis 9 erklärt.
The Architektenkammer, and what registration means.
Every German federal state has a chamber of architects established under public law. Ours is the Architektenkammer Nordrhein-Westfalen, abbreviated AKNW. It is a regulator, not a marketing body: it maintains the Architektenliste, the statutory register, and supervises professional conduct. Membership is not a badge an office buys.
Two consequences follow, and both are the reason the abbreviation appears throughout this website. First, the title Architekt is legally protected: only a person entered in the list may use it. Second, and more important for a project, entry is what carries the Bauvorlageberechtigung, the entitlement to sign and submit a building application to the authority. A design office without it can draw anything it likes and file nothing.
Entry requires an accredited degree in architecture, a documented period of practice, and continuing professional development thereafter. Registered architects are bound by the chamber's professional code and by its requirements on professional indemnity insurance. When a German owner asks whether the architect is in der Kammer, this is what is being asked: whether there is a named, supervised, insured professional who answers personally for the design.
At Alpha Quadrat the legally protected services, permit design, building applications, change-of-use procedures, technical assessments, are produced under the direction of Lazaros Amperidis, architect and member of the Architektenkammer Nordrhein-Westfalen (AKNW 32316), and carry his personal signature.
The Bauantrag: how a German building permit is actually obtained.
The Bauantrag is the formal building application. It is submitted to the Bauaufsichtsbehörde, the building control authority of the municipality or district, and it is not a single form but a prescribed set of documents, the Bauvorlagen. Their content is fixed by state regulation; in North Rhine-Westphalia that regulation is the BauPrüfVO. Applications are refused or delayed far more often for incompleteness than for substance.
- 01
Establish what the site permits
Either a Bebauungsplan (a binding local development plan setting use, density, heights and building lines) applies, or, in built-up areas without one, § 34 BauGB, which asks whether the proposal fits into the character of its surroundings. Both are checked before design money is spent.
- 02
Bauvoranfrage, optional, often worth it
A preliminary enquiry to the authority on a single decisive question, typically whether the intended use or volume is permissible. It produces a binding answer before the full design exists, and is the cheapest way to fail early.
- 03
Assemble the Bauvorlagen
The formal set of application documents. In North Rhine-Westphalia their content is prescribed by the BauPrüfVO: site plan, drawings, description of the building, structural and fire safety evidence, calculations of floor area and enclosed volume, parking evidence.
- 04
Submission by a bauvorlageberechtigter Architekt
The application must be signed and submitted by a person entitled to submit building documents, in practice a chamber-registered architect or engineer. A foreign design office cannot file it in its own name; this is the point where a German architect is not optional.
- 05
Review by the Bauaufsichtsbehörde
The building control authority of the municipality or district reviews the application, involves other authorities where required, and issues written conditions. Queries and requests for missing documents are normal and restart the clock in practice.
- 06
Baugenehmigung and its conditions
The permit is granted with Auflagen, conditions to be met before or during construction. It has a limited validity, so it lapses if you do not start building within the stated period.
Bauvoranfrage
PRELIMINARY BUILDING ENQUIRY
A formal question to the authority on one decisive point of admissibility, answered bindingly before the full design exists. The cheapest way to discover that a site will not carry the intended scheme.
Bauvorlagen
PRESCRIBED APPLICATION DOCUMENTS
The document set that constitutes the application: site plan, drawings, building description, structural and fire safety evidence, area and volume calculations, parking evidence. Content prescribed, not negotiable.
Nutzungsänderung
CHANGE OF USE
Changing what a building is used for is itself a permit matter in Germany, even without construction work. An office becoming a clinic, or a shop becoming a flat, needs its own application.
We offer a fixed-fee completeness check of a building application against the BauPrüfVO before it is filed, priced at 149 € incl. German VAT. It states which Bauvorlagen are missing and why. The German product page is at alpha-quadrat.de/bauantrag-check; write to us in English and we will run it for you.
The HOAI Leistungsphasen: how German design work is divided and paid for.
The HOAI, Honorarordnung für Architekten und Ingenieure, the German fee structure for architects and engineers, divides design work into nine Leistungsphasen, work stages. Every German fee proposal you receive will be written in this vocabulary, and every German designer will assume you know it. The stages are cumulative but separately commissionable: stages you do not instruct are deducted from the fee.
The percentages below are the customary shares of the total design fee. Since the 2021 reform they are no longer binding minimum rates, fees are freely negotiable, but they remain the reference against which any German proposal is read. Note the shape of the curve: obtaining the permit is only about 3 %, while detailed design and site supervision together account for well over half.
| LP | GERMAN TERM | WHAT HAPPENS | FEE SHARE |
|---|---|---|---|
| 1 | GrundlagenermittlungESTABLISHING THE BASIS | Clarifying the brief, a first site visit, and deciding which specialist designers, surveyor, structural engineer, fire safety expert, geotechnical engineer, are needed and when. | ≈ 2 % |
| 2 | VorplanungPRELIMINARY DESIGN | Options are developed and compared, conflicts of objective are made explicit, and a first cost estimate is produced from building volume and benchmark rates. | ≈ 7 % |
| 3 | EntwurfsplanungDESIGN DEVELOPMENT | The worked-through design, with a cost calculation to DIN 276 based on real component quantities rather than benchmarks. This is where the numbers first become dependable. | ≈ 15 % |
| 4 | GenehmigungsplanungPERMIT DESIGN | The Bauantrag itself: drawings at 1:100, structural and fire safety evidence, and submission to the Bauaufsichtsbehörde. Only a small share of the fee, and the phase that decides whether you may build at all. | ≈ 3 % |
| 5 | AusführungsplanungDETAILED DESIGN | Drawings at 1:50 and finer, with openings, junctions and every specialist designer's input integrated. You build from these drawings, not from the permit set. | ≈ 25 % |
| 6 | Vorbereitung der VergabePREPARING PROCUREMENT | A Leistungsverzeichnis, a bill of quantities, per trade: every item described with quantity, quality and method so contractors can price unit rates against the same document. | ≈ 10 % |
| 7 | Mitwirkung bei der VergabeASSISTING WITH PROCUREMENT | Tenders are obtained, checked and set side by side in a price comparison, ending in a recommendation for award. | ≈ 4 % |
| 8 | ObjektüberwachungCONSTRUCTION SUPERVISION | Site supervision: deadlines, quality and cost, delay and disruption management, and finally the Abnahme of each trade with a defects list and rectification deadlines. | ≈ 32 % |
| 9 | ObjektbetreuungAFTERCARE | After handover: pursuing defects within the warranty period and inspecting before the period expires. The smallest fee share, and the one most often skipped, usually at the owner's expense. | ≈ 2 % |
Kostenschätzung vs. Kostenberechnung
COST ESTIMATE VS. COST CALCULATION
The estimate (LP 2) works from building volume and benchmark rates. The calculation (LP 3, to DIN 276) works from real component quantities. The distinction is not pedantry: it tells you how much weight a figure will bear.
Leistungsverzeichnis
BILL OF QUANTITIES PER TRADE
Produced in LP 6. Every item described with quantity, quality and method, so that competing contractors price the same scope and their tenders can be compared line by line.
Abnahme
FORMAL ACCEPTANCE OF THE WORKS
The handover date that starts the warranty period, as a rule four years under the VOB/B, five under the BGB. Defects recorded before it are the contractor's problem; defects found after it are increasingly yours.
Why a Sachverständigengutachten carries weight in Germany.
A Gutachten is an expert report; a Sachverständiger is the expert who writes it. German construction disputes run on these documents to a degree that surprises most foreign clients. A Privatgutachten, one commissioned by a party rather than appointed by a court, does not bind a judge. It nonetheless decides a great many disputes, and here is why.
It is written to be read by a court
A German Privatgutachten follows a settled structure: the question asked, the findings on site, the technical assessment, and the conclusion, each separated, each traceable. That structure is what makes it usable in a dispute rather than merely persuasive.
The author is personally identifiable and liable
The report carries a name and a signature, not a company logo alone. The author answers for it professionally, which is precisely why the other side takes it seriously before litigation starts.
Findings are separated from opinion
What was measured, photographed and observed is set out apart from what is concluded from it. A court, an insurer or an opposing expert can accept the findings and still argue the conclusion, and usually does.
It shifts the burden of the conversation
In German construction practice most disputes settle before a court-appointed expert is ever instructed. A properly made private report is what moves an insurer or a contractor from refusal to negotiation.
A NOTE ON TERMS: A COURT-APPOINTED EXPERT (GERICHTLICH BESTELLTER SACHVERSTÄNDIGER) IS INSTRUCTED BY THE COURT AND OWES ITS DUTY TO THE COURT. A PRIVATGUTACHTEN IS COMMISSIONED BY A PARTY AND IS TREATED AS THAT PARTY'S SUBMISSION. THE REPORTS ALPHA QUADRAT PRODUCES ARE PRIVATGUTACHTEN, PREPARED UNDER THE PROFESSIONAL RESPONSIBILITY OF OUR CHAMBER-REGISTERED ARCHITECT.
Short answers to the recurring ones.
01What is the Architektenkammer?
The Architektenkammer is the public-law chamber of architects of a German federal state, for us the Architektenkammer Nordrhein-Westfalen (AKNW). It is not a trade association you join for marketing. It keeps the Architektenliste, the statutory register of architects, and only those entered in it may use the protected title 'Architekt' and submit building applications. Entry requires an accredited degree, several years of documented practice and continuing professional development thereafter.
02Why does it matter that an architect is chamber-registered?
Because German building law ties two things to the register: the protected professional title, and the Bauvorlageberechtigung, the entitlement to sign and submit a building application. A design produced by an unregistered office cannot be filed. Registration also brings the architect under the chamber's professional code and its professional indemnity requirements, which is what an owner is relying on when a design turns out to be defective.
03What is a Bauantrag?
The Bauantrag is the formal building application submitted to the Bauaufsichtsbehörde, the building control authority of the municipality or district. It consists of prescribed documents, the Bauvorlagen, whose content is set by state regulation, in North Rhine-Westphalia the BauPrüfVO. It must be signed by a person holding Bauvorlageberechtigung. The authority reviews it and issues a Baugenehmigung, usually with written conditions.
04What are the HOAI Leistungsphasen?
The HOAI (Honorarordnung für Architekten und Ingenieure) is the German fee structure for architects and engineers. It divides design work into nine Leistungsphasen, or work stages, from establishing the basis (LP 1) through permit design (LP 4) and detailed design (LP 5) to construction supervision (LP 8) and aftercare (LP 9). Each stage carries a percentage of the overall fee, so stages you do not commission are simply deducted. Since 2021 the percentages are no longer binding minimum rates, but they remain the reference against which German fee proposals are read.
05Can we build from the permit drawings?
No. Permit drawings (LP 4, scale 1:100) exist to obtain the Baugenehmigung. Construction is carried out from the Ausführungsplanung (LP 5) at 1:50 and finer, where openings, junctions and the input of every specialist designer are integrated. Treating the permit set as construction documentation is one of the more expensive misunderstandings on German sites.
06Why does a German expert report carry weight?
A Sachverständigengutachten is written to a settled structure, question, findings, assessment, conclusion, and is signed personally by an identifiable author who answers for it professionally. That combination makes it usable as evidence in a dispute and, more often, makes the dispute settle before a court-appointed expert is instructed at all. A private report does not bind a court, but it does determine what the other side has to argue against.
07When does the warranty period start?
At the Abnahme, the formal acceptance of the works. From that date the building passes into the owner's responsibility and the warranty period runs, as a rule four years under the VOB/B and five years under the BGB. The Abnahme is the single most consequential appointment in a German construction project, which is why it should not be attended without technical support.
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Building damage, moisture, handover inspections and valuation opinions.
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