When your consultant becomes your supplier: that doesn't break the award — but only if your procurement design has already flattened the advantage
The Belgian National Office for Annual Leave first had A.O.S. (later Colliers) draw a dynamic-office concept for its new Rigoletto building, then awarded the furniture contract to that same Colliers, and the Council of State refuses to suspend: a prior-involvement situation under article 64 of the Royal Decree on Placement 2011 doesn't automatically force the buyer to formally verify the competitive advantage, provided the procurement architecture itself neutralizes that advantage.
What happened?
In April 2014 the Belgian National Office for Annual Leave (ONVA/RJV) bought the Rigoletto building in central Brussels to relocate its services — substantially smaller than the previous building, hence a 'dynamic office' flex-desk approach. ONVA awarded a first, limited consultancy contract to A.O.S. Belgium: site visits, micro-level layout plans, budget estimates, choice of furniture types and characteristics. Plans had to be handed to the building's seller for renovation works before end of April 2015. In December 2014 A.O.S. was absorbed into Colliers International Belgium. On 28 January 2015 ONVA tendered a much larger second contract: supply and installation of all furniture, painting, flooring, electrical and IT connections to each workstation, cafeteria, meeting rooms — based on those earlier A.O.S. plans, attached as annexes. Two bids came in on 10 March 2015: Ordin Access and Colliers (the former A.O.S.). On 15 April 2015 ONVA didn't select Ordin and awarded to Colliers. Ordin sued in extreme urgency arguing that Colliers — via A.O.S. — had co-defined the specifications, knew the site, knew the desired equipment and budget — in short, had a competitive advantage under article 64 of the Royal Decree on Placement 2011, which ONVA should have investigated and sanctioned via a written exclusion procedure. The Council of State rejects the suspension. It first dismisses article 5 (market prospecting) — the earlier consultancy was a real contract, not prospecting. It dismisses article 95 (offer regularity) — article 64 sits in the qualitative selection chapter, not the regularity chapter. On article 64 itself: the Council accepts Colliers does fall under article 64, §1. But the written justification duty only arises when (a) the bidder itself attaches a justification, or (b) the buyer detects a probability of advantage. ONVA had explained — unchallenged at the hearing — that it designed the procedure precisely to prevent any bidder profiting from such advantage: clean separation between the two contracts, all deliverables from mission 1 made available to all potential bidders, balanced choice of award criteria. In those circumstances ONVA could reasonably conclude no verification was needed. On the substantive limb (Colliers did have an advantage): Ordin produces no concrete elements — 'better knowledge of the place' invoked without evidence of real advantage, no specification identified as drafted via A.O.S. in Colliers' favour, claims about knowing the desired equipment remain mere postulates. Suspension dismissed, Ordin pays 700 EUR legal costs plus 200 EUR.
Why does this matter?
This case exposes a routine pattern: a first contract for 'concept', 'study' or 'preparation', then a much larger second contract for execution. Who wins the second contract is crucial for bid managers — and a minefield for contracting authorities. If you're bidding against the phase-1 consultant: you need concrete, credible evidence of the advantage they gained, or your appeal fails prima facie. If you're the buyer and the phase-1 winner bids in phase 2: build neutralisation into your procedure architecture (publicly share all phase-1 deliverables, neutral specs, balanced criteria), and document why you don't need a formal article 64 verification.
The lesson
If you tender a contract that builds on an earlier study or consultancy contract: build the neutralisation of competitive advantage INTO the procedure itself, not just into the award motivation. Specifically: publish all phase-1 outputs (plans, specs, budget estimates) as annexes to the bid documents and downloadable by everyone, draft technical specs neutrally (not as 'what A.O.S. designed'), and document in your notes what measures you took. Then on an article 64 appeal you can say: 'we didn't ask for justification because we saw no probability of advantage — here's why'. And as a bid manager against the phase-1 consultant: identify specific specs or plans that prove their advantage. General lines like 'knowing the place gives an advantage' don't convince the Council.
Ask yourself
On a contract that builds on an earlier study or consultancy: are all deliverables from that earlier contract (plans, budget notes, preferred-material lists) published as annexes to the tender documents AND downloadable by every bidder? Did you document in your procedure note why you didn't run a formal article 64 inquiry?
About this database
The Council of State (Raad van State / Conseil d'État) is Belgium's supreme administrative court. In disputes over public procurement — from contract awards to tenderer exclusions — the Council of State is the final arbiter. The rulings in this database are summarised by TenderWolf in plain language, with practical lessons for tenderers and contracting authorities. View all rulings →