Bid Opening

The bid opening in construction procurement (German: Submission) is the formal opening session where bids for a construction contract are opened, read aloud, and recorded. It is a core element of construction procurement procedures under VOB/A and differs significantly from bid openings in supply or service contracts.

While the general term submission is used for VgV and UVgO procedures alike, the construction-specific practice is commonly referred to as the VOB/A bid opening session. The decisive difference: in construction procurement, the bid opening is a public act with bidders' right of attendance, under VgV/UVgO the opening is explicitly non-public.

Characteristics of construction bid openings

The VOB/A bid opening follows a strictly formalized process that has evolved over decades to safeguard fair competition:

• Publicity: Bidders may attend and follow the reading
• Reading of final amounts: Each bid total is announced aloud
• Immediate transparency: Bidders learn competitors' prices during the session
• Minutes: A bid opening protocol is created and signed
• Strict formalities: Late or unsealed bids are mandatorily excluded

Bid opening session vs. tender opening, the distinction

Although both terms are often used interchangeably, there are subtle practical differences:

Practical significance

For construction firms, the bid opening session is far more than an administrative act: it is the moment competition materializes. Attendance is often a strategic instrument, it delivers direct market intelligence and allows companies to position their own pricing relative to the competition.

With Patterno, you find all current construction tenders with their bid opening dates, automatically extracted from the tender documents and clearly displayed in the dashboard.

The bid opening in construction procurement is primarily governed by the VOB/A (Vergabe- und Vertragsordnung für Bauleistungen, Teil A), the German procurement code for construction works. Depending on the contract value, different sections apply:

§ 14 VOB/A (Section 1), National construction procurement

For construction contracts below the EU thresholds, § 14 VOB/A applies. Key provisions:

• § 14 (1) VOB/A: Bids must be kept sealed until the deadline
• § 14 (2) VOB/A: Bidders and authorized representatives may attend the opening
• § 14 (3) VOB/A: Reading of name, address, final amounts, discounts, and variant bids
• § 14 (4) VOB/A: Preparation of minutes available for inspection by attending bidders

§ 14 EU VOB/A (Section 2), EU-wide construction procurement

Above the EU thresholds (currently € 5,404,000 for construction contracts), § 14 EU VOB/A applies. The principles are identical, publicity, reading aloud, minutes, with additional requirements from EU procurement law (VgV, GWB §§ 97 et seq.).

Distinction from VgV and UVgO

In other procedures, bid openings are expressly not public:

• § 55 VgV: Opening by at least two representatives of the contracting authority, no bidder participation
• § 40 UVgO: Sub-threshold opening, also internal

This distinction has historical roots: construction works were traditionally considered particularly price-sensitive and susceptible to manipulation, which is why public bid opening was introduced as an additional corrective measure.

Consequences of violations

Formal errors in the bid opening session can have serious consequences: violations of § 14 VOB/A, such as premature opening, missing minutes, or unjustified exclusion, can lead to cancellation of the procedure or a successful review application.

A mid-sized civil engineering firm in Bavaria receives the tender notice for the expansion of a district road from a county administration via Patterno. Estimated value: € 2.4 million. Procedure: open tender under VOB/A.

The process up to the bid opening:

1. The company downloads the tender documents including the bill of quantities.
2. The estimating department prepares the bid, using digital tools (e.g. iTWO) unit prices are entered per position.
3. The bid is submitted two days before the opening session electronically via the e-procurement platform.
4. On the opening day at 11:00, the session takes place in the county administration's meeting room.

During the bid opening itself:

The procurement officer first establishes that eleven bids have been received on time. Three representatives of competing construction firms are present. After confirming the deadline has passed, bids are opened in order of receipt. For each bid the following are read aloud:

• Bidder name and address
• Final amount (e.g. "Müller Tiefbau GmbH, Augsburg, bid amount € 2,187,450.30 net")
• Any discounts or variant bids

The company's own bid of € 2,243,890 sits in the middle of the pack. The lowest bidder is at € 2,098,100, the highest at € 2,612,300. This market intelligence is immediately available, a clear advantage of public bid opening compared to internal opening under VgV.

After completion the bid opening protocol is signed. The subsequent evaluation and the price comparison take place non-publicly.

The bid opening session is formally strict, even minor lapses lead to mandatory exclusion. The five most common mistakes:

1. Late bid submission. Bids received even seconds after the deadline are not opened under § 14 VOB/A and are irrevocably excluded. There is no legal cure, not even for verifiable technical issues on the bidder's side.

2. Missing or faulty sealing (paper procurement). In the rare cases where paper bids are still permitted, the envelope must be clearly sealed and marked as a bid for the respective procurement. An open or mislabeled envelope leads to exclusion.

3. Incomplete bill of quantities. If positions in the bill of quantities are not filled in or price details are omitted, the bid is regularly excluded. Even a € 0.00 entry without plausible explanation can trigger exclusion review.

4. Modifications to tender documents. Crossed-out or added clauses, attached own terms, or reservations render the bid "non-compliant", and thus subject to mandatory exclusion.

5. Missing attendance without authorization. Those who cannot attend the bid opening lose valuable market intelligence. A bidding consortium or an authorized representative (e.g. sales partner) can exercise the attendance right by proxy.

Firms regularly participating in construction tenders should internalize the following recommendations:

1. Track bid opening dates systematically. Enter every bid opening date in the calendar immediately upon receipt of tender documents, with at least 24 hours buffer before submission. Patterno automatically extracts opening dates from tender documents and delivers them structured into the dashboard.

2. Establish attendance as a default. Attend bid openings or send an authorized representative. The reading of competitor prices is one of the most valuable market intelligence inputs you receive for free, it sharpens your own pricing basis for future bids.

3. Submit early, not at the last minute. Submit electronic bids via the e-procurement platform at least 24 hours before deadline. Platform technical issues are no justification for late submission.

4. Request and analyze the bid opening protocol. You have a right to inspect the minutes. Save price comparisons systematically, over time this builds a valuable picture of the competitive environment in your region and trade.

5. Secure pricing with a four-step check. Have every bid reviewed under a four-eyes principle before submission: calculation check, completeness, plausibility, signature. In the construction sector, Patterno additionally provides an AI calculation agent that pre-prices positions and runs plausibility checks against market data.