For small construction contractors in Nigeria and across Africa, the final 5% or 10% of a contract sum is often the hardest to collect. This withheld amount, known as the retention sum, is designed to guarantee that the builder rectifies any construction faults.
The period during which these repairs must be made is called the defects liability period, which typically runs for six to twelve months after practical completion. For an SME builder, this period can either secure their profit or completely wipe out their margins.
On a typical ₦100 million commercial project, a 5% retention means ₦5 million is held back by the client. If the contractor’s net profit margin is 10%, half of their entire profit remains locked up in the client’s bank account.
If the contractor has to make multiple unplanned site visits to fix poorly executed plumbing or cracked plaster, the cost of labor and materials will quickly eat into that remaining margin. Worse still, if the client is unsatisfied, they may refuse to release the funds entirely.
To protect margins, a firm must build a defects liability process as a contractor that prevents disputes and secures the release of retention funds.
The Financial Cost of Poor Defect Management
Many small contractors treat the defects liability period as an afterthought. They move their best artisans to new sites immediately after handover, leaving junior staff or third-party day-laborers to handle remedial works.
This practice often leads to slow response times and sub-standard repairs. When repairs drag on, the client’s frustration grows, which often leads to protracted disputes over the release of the retention sum.
In some cases, clients may hire alternative contractors to fix the defects at inflated rates. These costs are then deducted directly from the retention sum, leaving the original contractor with a direct financial loss.
Establishing the Contractual Boundary
The first step in managing defects is defining exactly what constitutes a defect before the project even begins. Contracts must clearly distinguish between structural or workmanship faults and normal wear and tear.
For example, a hairline crack in a plaster wall caused by natural building settlement is often standard. A leaking pipe caused by poor jointing is a clear defect that the contractor must fix.
The contract must also specify the exact duration of the defects liability period and the agreed response times for different classes of faults. Emergency issues like electrical failures require a 24-hour response, while cosmetic repairs can be batched and resolved monthly.
A small contractor should also negotiate the option of a retention bond. This insurance-backed instrument allows the contractor to receive their full contract sum at practical completion while still guaranteeing the client that defects will be fixed.
A Step-by-Step Rectification Workflow
To manage the process efficiently, a small contractor should implement a three-stage quality control system. This system starts well before the formal handover date.
First, conduct an internal pre-completion inspection. The project manager must walk through the site two weeks before handover to create an internal snag list of unfinished or faulty work.
Fixing these issues before the client sees them reduces the size of the official hand-over snag list. A clean handover significantly reduces the client’s anxiety and builds professional trust.
Second, establish a single point of contact for defect reporting. Clients should not be allowed to call individual artisans directly; all complaints must go through a designated email address or phone line.
This centralization allows the contractor to log every complaint, assess its validity under the contract, and schedule repairs systematically.
Third, obtain formal sign-offs for every completed repair. When a defect is resolved, the client or their representative must sign a job card confirming that the specific issue has been fixed to their satisfaction.
Securing the Release of Retention Cash
As the defects liability period nears its end, the contractor must initiate the final inspection process. Waiting for the client to initiate this step often leads to unnecessary delays in releasing the retention money.
The contractor should formally request a joint inspection of the property two weeks before the defects liability period expires. During this walk-through, both parties must agree on any remaining outstanding issues.
Once these final items are resolved, the contractor must request a Certificate of Making Good Defects. This certificate is a formal contractual document that legally obligates the client to release the retained funds.
For an SME contractor, the discipline of managing this process is not just about keeping clients happy. It is a vital financial practice that directly determines whether a project actually makes a profit.
