Expert article
VOB acceptance: process, report, reservations — the practical guide
Acceptance is the most expensive appointment of the project: it shifts the burden of proof, risk, payment, and deadlines. Only formal acceptance creates a resilient evidentiary position.
Expert article by Open Experience GmbH. · As of: July 2026
What is acceptance under VOB/B?
Acceptance under § 12 VOB/B (the German construction contract procedures) is the client's declaration that the construction work has essentially been performed in accordance with the contract. With it, payment becomes due, the burden of proof for defects passes to the client, the risk passes — and the limitation period for defect claims begins (under VOB/B, regularly four years for buildings). In professional construction, formal acceptance with a report is the standard, because only it creates a resilient evidentiary position.
What types of acceptance are there?
Four paths lead to acceptance — but only one is controlled by you. The others happen to you.
| Type of acceptance | Prerequisite | Risk |
|---|---|---|
| Formal acceptance (§ 12 (4) VOB/B) | Joint walkthrough, report, signatures | Low — the intended standard for projects with documentation obligations |
| Express acceptance | Declaration without a formal procedure | Without a report, the defect status and reservations are missing |
| Implied acceptance | Conduct showing approval (such as use, payment) | The point in time is hard to determine later — deadlines run unnoticed |
| Deemed acceptance (§ 12 (5) VOB/B) | Expiry of the deadline after notice of completion or taking into use | Acceptance without any record of defects and without reservations |
The formal acceptance process in seven steps
Seven steps, two of which are regularly forgotten — step 5 and step 7.
Request for acceptance
Arrange the appointment, observe the deadlines under § 12 (1) VOB/B.
Preparation
Compile outstanding work, known defects, and inspection runs — best from the running defect list.
Joint walkthrough
With all contract parties; record findings immediately, not from memory in the evening.
Findings
Record defects, outstanding work, and disputed points with photo and location.
Declaring reservations
Expressly reserve known defects and the contractual penalty — otherwise they are lost.
Signing the report
Finalize and have both sides sign, ideally while still on site.
Setting the deadlines in motion
Set deadlines for defect remediation and document the start of the limitation period.
The most expensive mistakes
Forgetting the contractual-penalty reservation, noting defects without a deadline, "reconstructing" the report days later.
What has to go into the acceptance report?
If one of these points is missing, the report loses value in a dispute.
- Parties and propertyContract parties, walkthrough participants, property or portion of work, date.
- Declaration of acceptanceThe declaration of acceptance — or the refusal with specific reasons.
- Defects and outstanding workFor each item a description, location, photo, and deadline for remediation.
- ReservationsKnown defects and the contractual penalty expressly, not by implication.
- SignaturesBoth sides, with date — ideally immediately after the walkthrough.
Recorded digitally, the evidentiary position is created on the day of acceptance — including timestamps, photos per defect, and distribution to all parties.
Refusing acceptance — when and how?
In the case of substantial defects, the client can refuse acceptance (§ 12 (3) VOB/B). The refusal must be justified and documented — with specific defects, not blanket criticism.
After acceptance — keeping deadlines under control
With acceptance, the limitation period for defect claims begins (VOB/B regularly four years, BGB five years for buildings). The defects recorded at acceptance must be tracked against their deadlines, and new defects must be notified in time — under § 13 (5) VOB/B, a written defect notice extends the limitation period for the notified defect. Whoever manages these deadlines in Excel loses them.
Frequently asked questions
When is the work deemed accepted?
Under § 12 (5) VOB/B, upon expiry of twelve working days after written notice of completion, or six working days after taking into use — if no acceptance was requested.
Does the contractor have to be present at acceptance?
In formal acceptance, the joint recording of findings is the standard case; under certain conditions, the VOB/B also permits acceptance in absence.
What is a partial acceptance?
The acceptance of self-contained portions of the work (§ 12 (2) VOB/B) — with all legal consequences for that portion, including the start of the limitation period.
Is a handover report sufficient as acceptance?
Not automatically — the declaration of acceptance is decisive. Label the document unambiguously.
How do I document acceptance in an evidence-proof way?
Digitally, with timestamps, photos per defect, location reference, and an immediately signed report — this way the evidentiary position is created on the day of acceptance, not weeks later.
Acceptance in the morning, report by the time you leave the site.
In 45 minutes we'll show you a complete acceptance — from the walkthrough to the signed report.