Subcontracting civil works outside Spain is not about repeating the same job in another country: the governing law, the contract, the guarantees and the people who decide whether a company is suitable all change. Knowing these criteria before bidding avoids costly surprises.
At the international construction company Site & Field we have worked for more than 20 years as a civil works subcontractor for major contractors in several countries. This article sets out, from experience, what is required, what is guaranteed and what is signed on those projects.
What civil works subcontracting means on an international project
A main contractor wins the contract from the developer and splits the work into packages for specialist companies: earthworks, foundations, structures or site development. The subcontractor answers to the main contractor, not to the developer.
Abroad, that subcontractor works with local law, language, permits and suppliers. That is why international civil works subcontracting demands technical capability and also a legal and operational structure in the project country.
The key difference from Spain is that the legal framework is no longer the one you know, and with it the rules on payment, liability and safety change.
In Spain, Law 32/2006 and Royal Decree 1109/2007 regulate subcontracting in construction and require registration in the Register of Accredited Companies (REA). We review it in our analysis of the regulations on subcontracting in construction; in other countries, the framework can be very different.
Documents a subcontractor must provide outside Spain
Before awarding, the main contractor opens a prequalification process. Each client sets its own exact list, but the documents usually fall into five blocks:
- Legal and corporate: deeds, powers of attorney and certificates showing tax and labour obligations are up to date.
- Financial standing: accounts, turnover and liability insurance.
- Technical references: similar projects and the company’s own resources.
- Management systems: quality, environment and safety, with their accident record.
- Local registrations: licences, registrations and permits required in the project country.
In our case, we hold ISO 9001, ISO 14001 and ISO 45001 certifications and our own machinery, including pile drivers. Proving resources is therefore simpler, because we do not depend on third parties for the critical part of the work.
Guarantees and bonds required in an international construction contract
Guarantees protect the main contractor against the subcontractor’s defaults. Several are usually requested at once, and each contract sets their amount, validity period and the conditions for calling them.
Common types of guarantee
- Performance: covers the correct execution of the work package.
- Advance payment: backs the payments made in advance to the subcontractor.
- Retention: allows amounts withheld from payment certificates to be replaced by a bond.
- Defects: covers the period after completion of the works.
On-demand bonds or conditional bonds
An on-demand bond is paid when the beneficiary claims it, without first arguing the merits. A conditional one requires proof of default. For the subcontractor, the risk is very different in each case.
If the bond refers to the ICC’s URDG 758, those rules apply, but only if the guarantee itself says so. It is worth reading that wording before the bank issues it.
A badly drafted bond can tie up liquidity or leave a claim open for years: review the wording, the validity and the release conditions with local advice.
Contractual standards: what FIDIC brings to the subcontract
Many international contracts rely on models from the FIDIC federation. It publishes FIDIC subcontract conditions aligned with its main contracts, so that rights and obligations flow down the chain consistently.
The standard general conditions link the subcontractor’s payment to the main contractor’s receipt of payment under a pay when paid scheme, rather than the harsher pay if paid. Even so, the particular conditions can change this.
A FIDIC model does not replace the governing law: the particular conditions and the law of the contract modify what the base text says. That is why both must be read, not just the model.
We also offer open book contracts when the client prefers them, with cost transparency towards the main contractor. It is a criterion that is increasingly valued on complex projects.
How a Spanish subcontractor adapts to local regulations
Adapting means translating procedures to the country’s standard: safety, quality, environment, material approval and labour management. Our practice is to adapt regulations and procedures to the standards each project demands, without improvising along the way.
On projects financed by multilateral bodies, their policies set many of the requirements. ICEX brought banks such as the World Bank and the EBRD together in Madrid at its multilateral meeting (in Spanish) to explain their investment priorities and how to bid.
To see who competes or partners abroad, the lists of major global contractors published by ENR are a useful reference. Planning must also cover logistics: we explain it in our analysis of logistical challenges in large construction projects.
Advantages of subcontracting with a local subsidiary in the project country
We have local subsidiaries in the United Kingdom, the United Arab Emirates, Denmark, Luxembourg and Spain. A local subsidiary makes it possible to register the activity, hire and pay in the country and respond quickly to the main contractor.
It also makes it easier to apply local regulations without intermediaries and to manage permits, staff and suppliers with direct knowledge of the market. You can see how we work in one of them in our article on a Spanish construction company in the UAE.
A local subsidiary is not a formality: it gives the main contractor a counterpart on the ground, with permits and deadlines under control.
Frequently Asked Questions about International Civil Works Subcontracting
What is civil works subcontracting on an international project?
It is the execution of a civil works package —earthworks, structures, site development or foundations— by a specialist company hired by the main contractor outside its home country. The subcontractor takes on time, quality and safety for its package under local law.
What documents must a subcontractor provide outside Spain?
It usually provides five blocks: legal and corporate documents, financial standing, technical references and own resources, quality, environment and safety systems, and the registrations and permits of the project country. The main contractor sets the exact list in its prequalification.
What guarantees and bonds are required in an international construction contract?
The usual ones are performance, advance payment and retention guarantees, plus post-completion cover for defects. They can be on-demand or conditional bonds; amount, term and rules are set by each contract, so they should be reviewed before signing.
How does a Spanish subcontractor adapt to the country’s local regulations?
By combining a local structure with local legal and technical advice: a registered subsidiary or branch, quality and safety procedures adjusted to local standards and a contract review under the applicable law. A local subsidiary also helps manage permits, staff and suppliers with direct market knowledge.
What are the advantages of subcontracting with a local subsidiary in the project country?
A local subsidiary makes it easier to meet registration requirements, hire and pay in the country, respond quickly to the main contractor and apply local regulations without intermediaries. For the main contractor it means a permanent counterpart and less friction over permits, deadlines and authorities.
