The single biggest financial risk when building in Ghana is not the cost of materials. It's not the exchange rate. It's building without a written contract. This guide explains exactly what a construction contract does, what it should contain, and why no contractor who refuses to sign one is worth working with.
🛡️ At Cornerstone Build Ghana, every project — even a small repair — starts with a signed, fixed-price contract. It protects you. It protects us. And it's the professional standard that the industry should hold itself to.
What is a Construction Contract?
A construction contract is a legally binding agreement between you (the client) and your contractor that defines what will be built, at what price, by when, and on what terms. It is your primary protection against the most common contractor problems in Ghana: price changes, disappearing after advance payments, substandard work and disputes over scope.
Contract checklist — quick reference
| Contract Element | What to Check | Red Flag |
|---|---|---|
| Scope of work | Full description with drawings referenced | Vague ("build a 3-bed house") |
| Contract sum | Fixed GHS figure, all-inclusive | Provisional sums for major items |
| Payment schedule | Tied to verified milestones | Calendar dates / time-based |
| Completion date | Specific date or timeline stated | No date mentioned |
| Variations procedure | Written change order required | No mention of how changes are handled |
| Warranty period | 6–12 months, in writing | Verbal only, or none stated |
What a Good Construction Contract Must Include
- Scope of work — a detailed description of exactly what is to be built or repaired, with reference to drawings where applicable.
- Fixed contract price — the total amount, confirmed as fixed unless a written change order is agreed.
- Payment schedule — clear milestones tied to measurable progress, with amounts due at each stage.
- Project timeline — a start date, key milestones and an expected completion date.
- Material specification — what materials are to be used (brand, grade, specification) — not just a description.
- Change order process — how variations to the scope are to be agreed and priced.
- Workmanship warranty — the period and terms of the contractor's warranty on their work.
- Dispute resolution — how disagreements will be resolved (ideally referring to Ghana's Alternative Dispute Resolution Act).
- Termination provisions — what happens if either party wants to end the contract.
What Happens Without a Contract
Without a signed contract, here is what you cannot enforce:
- The price — a verbal quote is not legally binding in a dispute
- The scope — the contractor can claim they never agreed to certain items
- The timeline — there is no agreed completion date to hold them to
- The materials — there is no specification to verify against
- The warranty — there is nothing to claim against if work fails
A WhatsApp message is not a contract. An email quote is not a contract. Even a detailed verbal agreement is almost impossible to enforce in Ghana's courts. A signed, written contract is the only protection.
Red Flags: Contractors Who Avoid Contracts
If a contractor refuses to sign a contract, tells you "it's not necessary," or offers a vague one-paragraph "agreement" — walk away. Legitimate contractors sign contracts because it protects them too. A contractor who avoids a written agreement is a contractor who wants to keep their options open at your expense.
The Change Order Rule
Even with a perfect contract, scope creep is a risk. Any change to the agreed scope — additional rooms, upgraded materials, design changes — should be captured in a written Change Order before work proceeds. The Change Order should state what is being changed and the additional cost (or credit). No verbal changes. No "we'll sort it out at the end."
Want to see what a proper construction contract looks like?
When you request a quote from Cornerstone, we send you a draft contract along with the quote — before you commit to anything. You can review it, ask questions and negotiate. That's how it should work.
Request a Quote & Contract