Subcontracting vs Bidding: How to Win Construction Work at Lower Risk

Many construction companies want to work on public projects, but bidding directly looks too risky for a first move. Bid bonds, references, technical capacity, performance guarantees and full liability towards the contracting authority are a lot to take on at once. There is a simpler route into the same projects: subcontracting.

In short: as a subcontractor you deliver part of a contract that a main contractor has already won. You do not submit an offer to the contracting authority, you do not post a bid bond and you do not answer directly to the public body. You enter public construction work with a lower barrier to entry and build the experience that later makes bidding on your own far easier.

What is subcontracting in public procurement?

Subcontracting in public procurement is a setup where the company that won the tender (the main contractor) hands part of the contract to another company (the subcontractor). The subcontractor delivers a defined scope of work under a contract with the main contractor, not with the contracting authority.

What this means in practice:

• The main contractor stays the party to the contract with the public body and is responsible for the whole delivery.
• The subcontractor is responsible for its scope towards the main contractor, on the terms agreed between the two companies.
• EU public procurement rules allow contracts to be delivered with subcontractors, and construction law in many countries adds specific rules on subcontracting and payment.
• Contracting authorities can require bidders to state which parts of the contract they intend to subcontract and to name subcontractors that are already known.

For a company that is new to public procurement, this is the easiest way to take part in large projects.

Subcontracting vs bidding directly: the key differences

Why does subcontracting lower the risk of entering construction work?

1. No bid bond or performance guarantee to the authority. These sit with the main contractor, so you do not lock up capital at the start.
2. You do not have to meet the tender qualification criteria on your own. The requirements that apply to you come from the contract with the main contractor, not from the tender documents.
3. Lower cost of entry. You do not prepare a full public bid with all statements, declarations and pricing for the authority.
4. Practical references. You deliver work on public projects and build a portfolio that helps when you later bid on your own.
5. Payment protection in construction. In many jurisdictions, procurement and construction law include mechanisms such as direct payment to subcontractors or joint liability of the client and main contractor for construction works. The exact protection depends on the country and the contract, so confirm the rules that apply to your project.

What are the limits and risks of subcontracting?

Subcontracting has boundaries worth knowing before you decide:

• Dependence on the main contractor. Your revenue depends on the main contractor winning work and managing delivery well.
• Lower margin. Part of the contract value stays with the main contractor.
• Limited formal references. Subcontracting experience is not always counted the same as delivering a contract on your own when qualification criteria are assessed later. Document your scope and completion protocols carefully.
• Contract terms with the main contractor. Payment terms, penalties and the scope of liability are set by the contract between the companies, so review it thoroughly.
• Risk of delayed payment. Even with legal safeguards, cash flow can stretch, so plan your finances accordingly.

How to find subcontracting work in construction tenders

Winning subcontracting work rests on one principle: you reach the companies that win public construction contracts before they start building their delivery teams. Here is the process in five steps:

1. Monitor construction tenders and award results. Track not only notices but also awards, because they show who just won a contract and will need subcontractors. A public tender search platform with award monitoring cuts this step down to minutes.
2. Identify the main contractors. Build a list of companies winning contracts in your region and scope, for example in construction tenders.
3. Analyze the tender documents. The full tender documentation, including the specification and the description of the works, shows the scope. From that you can judge which part the main contractor is likely to subcontract and whether it fits your skills.
4. Reach the main contractor with a specific offer. Instead of a generic pitch, present a matched scope: what you deliver, in what timeframe, with what resources and references. Specifics raise your chances.
5. Run a pipeline of contacts. Treat main contractors like a client base, log the status of talks, deadlines and decisions. A structured sales process turns single conversations into a repeatable stream of work.

The same approach works in narrow niches within construction tenders, where large contractors almost always rely on specialist subcontractors.

How Minerva supports companies looking for subcontracting work

Minerva is a public tender platform and AI tender software that automates tender search, document analysis and award monitoring. For a company building its position as a subcontractor, that means reaching the right main contractors faster.

What AI-driven tendering with Minerva gives you:

• Monitoring of 4,500+ sources daily. New notices and awards reach you in real time, so you know who just won a contract.
• Full document reading, not only CPV codes. Minerva analyzes the actual content of a procedure, including the specification and the description of the works, so you can assess the real scope to subcontract.
• OCR on scanned PDFs. Even scanned attachments become searchable, which matters in construction documentation.
• AI with anti-hallucination citations. Every answer points to a source in the documents, so you work on verifiable data.
• Semantic search. You find procedures that match your skills even when the wording differs from yours.
• Competitor and award analysis. You see which main contractors win in your segment and region.
• CRM and Kanban module. You run your pipeline of main-contractor contacts in one place.

That is the full path from finding a contract, through setting the scope to subcontract, to contacting the right main contractor.

From subcontracting to bidding on your own

Subcontracting works well as a first stage, but it does not have to be the final model. As you deliver more scopes of work, you build experience, learn how public procurement works and gather material for future references.

When to consider bidding on your own:

• you have documented deliveries and technical capacity that match the qualification criteria,
• you can cover a bid bond and guarantees without straining cash flow,
• your team knows how to prepare and submit an offer.

Before you submit your first offer on your own, work through a Go / No-Go decision for the specific procedure and analyze the tender documents in detail. It also helps to study how competitors win their bids and to read our guide on how to win your first public tender.

Frequently asked questions

Does a subcontractor have to meet the tender qualification criteria?

Not towards the contracting authority. The qualification criteria are met by the bidder that submits the offer. A subcontractor is bound by the requirements in its contract with the main contractor and any quality requirements set for the scope of work.

Does a subcontractor submit an offer to the contracting authority?

No. The offer is submitted by the bidder that becomes the party to the contract with the public body. The subcontractor signs a contract with the main contractor and delivers the agreed scope.

Is a construction subcontractor guaranteed payment?

In many jurisdictions, procurement and construction law include safeguards such as direct payment to subcontractors or joint liability of the client and main contractor for construction works. These protections depend on the country and the contract, so confirm the rules for your project.

How do I find main contractors looking for subcontractors?

The most effective way is monitoring construction tender awards. Companies that have just won a contract usually build their subcontractor team at that point. A platform like Minerva shows those awards in real time and lets you build a list of contractors to contact.

Is it worth starting with subcontracting instead of bidding on my own?

For companies with no public procurement experience, usually yes. Subcontracting gives access to public projects at lower financial and formal risk, and the experience makes bidding on your own easier later.

See which contractors win construction tenders in your region

Want to reach subcontracting work faster? Book a Minerva demo and see how award monitoring and document analysis help you find the right main contractors. You can also explore construction tenders on Minerva.