Construction Contracts in Rwanda: 10 Clauses to Check Before You Sign

Most construction disputes in Rwanda do not start on site. They start months earlier, with a contract that was too short, too vague or never written down. A clear contract protects both the client and the contractor, because it says exactly what will be built, for how much, by when, and what happens when something changes.

This guide walks through the clauses to check before you sign a building contract in Rwanda. It is practical guidance from a construction perspective, not legal advice.

The legal starting point

Contracts in Rwanda are governed by Law N° 45/2011 of 25/11/2011 governing contracts. According to the Chambers Commercial Contracts 2025 guide to Rwanda, the law recognises the freedom of parties to set their own terms, and both oral and written contracts can be valid, but written contracts are encouraged as evidence. For a building project, a written, signed contract is the only sensible option.

1. Parties and registration

State the full legal names of the client and the contractor, their addresses, and the contractor’s company registration and tax details. If design professionals are part of the agreement, name them too, and check engineers on the Institution of Engineers Rwanda registry. Our guide on who does what on a building project explains each role and how to check registration.

2. Scope of work and contract documents

The contract should list the documents that define the work and say which one prevails if they conflict. Typically these are:

• the approved architectural, structural and services drawings;
• the specifications for materials and workmanship;
• the priced Bill of Quantities;
• the construction permit and any conditions attached to it.

If the scope is only described in a sentence such as “construct a four-bedroom house”, it is too vague to enforce. A priced Bill of Quantities is the clearest way to fix the scope and the price together.

On larger projects, many clients and contractors base their agreement on the standard conditions of contract published by FIDIC, the International Federation of Consulting Engineers, adapted to Rwandan law. For a house, a shorter contract can work, as long as it covers the points below.

3. Contract price and how it can change

Say whether the price is a fixed lump sum or will be remeasured against the BOQ quantities actually built, whether it includes VAT, and which items are provisional sums. Agree in advance how price changes are handled, for example when material prices rise sharply or the client changes the design.

4. Payment installments

Link each installment to completed and checked work, not to dates alone. A clear clause states:

• the stages or valuations that trigger each installment;
• who checks the work before payment, such as the supervising engineer or quantity surveyor;
• any advance payment and how it is recovered;
• any retention held back until the end of the defects period;
• how many days the client has to pay after an installment is certified.

5. Programme, completion and delays

Include a start date, a completion date and a programme showing the main stages. Then say what happens if the work is late: which delays give the contractor more time (for example, client changes or permit delays) and what the contractor owes if the delay is their own responsibility. Any daily charge for late completion should be agreed in writing and stated as an amount.

6. Variations

Design changes are normal, but each one should be instructed in writing and priced before the work is done, ideally using the agreed BOQ rates. A simple variation procedure prevents the most common surprise at the end of a project: a final bill much higher than the contract price.

7. Materials, quality and inspections

Refer to the specifications and require materials to meet them. Say who approves samples, how tests are carried out, and that work may be inspected at key stages such as foundations, reinforcement before concreting, and roofing. Our building materials sourcing guide covers what to check when materials arrive on site.

8. Site safety and insurance

The contractor is normally responsible for the site, workers’ safety and protection of the works until handover. State the insurance the contractor must hold and ask for copies before work starts.

9. Handover and defects liability

Define practical completion, the handover inspection and a defects liability period during which the contractor must return to fix faults. Link the release of any retention to the end of that period.

10. Termination and disputes

Set out when either party can end the contract, for example non-payment or abandoning the site, and what is paid on termination. For disputes, agree a sequence: discussion between the parties, then mediation or arbitration, then the courts. The same Chambers guide notes that arbitration is recognised in Rwanda and that Rwandan courts respect valid arbitration clauses.

Before you sign: a short checklist

1. Every drawing, specification and the priced BOQ are listed and attached.
2. The price, VAT treatment and provisional sums are clear.
3. Installments are tied to certified work.
4. Start date, completion date and delay rules are written down.
5. There is a written variation procedure.
6. Defects period, retention release and dispute steps are agreed.
7. Both parties have signed every page, and each keeps an original.

Comparing builders before you sign? Our sister studio’s guide on how to choose a construction company in Kigali covers the checks to make first, and our article on house construction costs in Rwanda helps you test whether a contract price is realistic.

This article is general information, not legal advice. For a significant project, have the contract reviewed by a lawyer in Rwanda before signing.