You’ve decided to build a house in Kenya. You’ve purchased land, started working on architectural drawings and are thinking about hiring a contractor.
But there’s an important decision to make before construction begins.
Should you hire a contractor to provide labour only, or should you engage a construction company to manage both labour and materials?
Both arrangements are used in Kenya, and each has advantages and disadvantages.
A labour-only arrangement gives you greater control over material purchasing but also introduces additional responsibilities.
A full construction contract can simplify coordination, although you still need to understand precisely what the contractor has agreed to deliver.
This guide explains how both approaches work, what they cost and how to decide which arrangement suits your project.
What is a labour-only construction contract?
A labour-only construction contract is an arrangement in which the homeowner generally purchases construction materials while the contractor supplies the labour needed to carry out the work.
For example, if you’re building a three-bedroom bungalow, you might personally purchase cement, sand, ballast, steel reinforcement, roofing sheets and other materials.
Your contractor would organize workers to undertake the construction.
Depending on your agreement, the contractor might also provide site supervision and coordinate the various trades.
However, labour-only does not automatically mean that every supervisory responsibility is included.
The contract should explicitly establish who is responsible for supervision, equipment, temporary works, site security and other important activities.
Example of a labour-only arrangement
Imagine you’re constructing a house in Ruiru.
You hire a contractor to complete the foundation and structural work.
The contractor provides masons, carpenters, steel fixers and general labourers.
You purchase the required materials and arrange for their delivery to the construction site.
The contractor then uses those materials to execute the work according to the approved drawings and specifications.
This gives you direct control over purchasing decisions.
However, it also means that construction progress may depend on how effectively you organize procurement.
What is a full construction contract?
Under a full construction contract, the contractor typically takes responsibility for supplying the materials and labour required to complete an agreed scope of work.
For example, you might appoint a construction company to build your house from foundation to completion.
The company coordinates material procurement, workers, subcontractors and construction activities.
You make payments according to the contract.
The contractor is responsible for delivering the specified work, subject to the agreed contractual terms.
However, the expression “full construction contract” does not automatically mean that absolutely everything is included.
Landscaping, boundary walls, kitchen appliances, professional fees and other items may be excluded.
Similarly, a contract described as “turnkey” should still have a detailed written scope.
Always establish what the contractor is actually promising to deliver.
Labour-only vs full construction: Key differences
| Consideration | Labour-only contract | Full construction contract |
|---|---|---|
| Material purchasing | Usually homeowner | Usually contractor |
| Labour provision | Contractor | Contractor |
| Material supplier selection | Homeowner | Contractor, subject to specifications |
| Procurement coordination | Usually homeowner | Usually contractor |
| Site supervision | Depends on agreement | Usually included, but scope must be defined |
| Material price exposure | More directly borne by homeowner | Depends on contract pricing and adjustment terms |
| Homeowner involvement | Generally higher | Generally lower |
| Payment arrangements | Agreed labour rates or milestones | Agreed contract payment schedule |
| Quality responsibility | Must distinguish materials from workmanship | Defined by contract and applicable obligations |
Neither arrangement automatically guarantees a lower final construction cost.
The outcome depends on the project, contractual scope, management arrangements and actual expenditure.
Is labour-only construction cheaper in Kenya?
Labour-only construction can be cheaper in some circumstances.
One potential advantage is that the homeowner purchases materials directly.
If you can obtain competitive supplier prices, organize deliveries efficiently and control wastage, you may reduce certain procurement costs.
You can also choose specific brands and products rather than relying on the contractor’s purchasing decisions.
However, these potential savings are not guaranteed.
Consider the additional responsibilities you may assume:
- Finding suitable suppliers
- Comparing material quotations
- Organizing deliveries
- Verifying quantities received
- Managing storage and security
- Coordinating purchasing with construction progress
- Dealing with damaged or incorrect materials
- Resolving supply delays
These activities require time and sometimes additional paid personnel.
If procurement is poorly coordinated, the apparent savings can disappear.
For example, workers may arrive at the site expecting to begin a particular activity only to discover that the necessary materials have not been delivered.
Depending on your agreement, you may still incur labour or standing-time costs while work is delayed.
This is why comparing only the contractor’s labour quotation with a full construction quotation is misleading.
You need to compare the complete expected project cost.
How to compare the total costs
Suppose you’re considering two arrangements for the same house.
Contractor A offers a labour-only agreement.
Contractor B offers a full construction agreement.
To compare them, establish the expected costs under each arrangement.
For the labour-only option, your budget should account for labour, materials, deliveries, supervision, equipment and other responsibilities that remain with you.
For the full construction option, examine the contractor’s complete quotation and identify any exclusions.
A useful comparison might look like this:
| Cost component | Labour-only | Full construction |
|---|---|---|
| Labour | Separate allowance | Usually included |
| Materials | Purchased by homeowner | Usually included |
| Material transportation | Homeowner unless agreed otherwise | Depends on quotation |
| Site supervision | Confirm separately | Confirm inclusion |
| Equipment | Confirm separately | Confirm inclusion |
| Site security | Confirm separately | Confirm inclusion |
| Professional inspections | Confirm separately | Confirm separately |
| Contingency | Project-specific allowance | Project-specific allowance |
Ask a quantity surveyor to review the comparison where appropriate.
The objective is to establish the expected total cost of delivering the same completed building, rather than comparing two figures covering different responsibilities.
Advantages of labour-only construction
1. Greater control over materials
You can select suppliers and purchase materials that meet the project’s specifications.
This may appeal to homeowners who want direct visibility into material purchasing.
However, material selection should remain consistent with the approved drawings and professional specifications.
2. Potential procurement savings
Purchasing directly from suppliers may provide opportunities to compare prices and negotiate terms.
Whether those savings outweigh your additional management costs depends on the project.
3. Greater visibility into expenditure
Because you purchase materials yourself, you can maintain direct records of supplier invoices and payments.
This can make it easier to track how much money is being spent on particular materials.
However, good records do not eliminate the need to verify quantities and workmanship.
4. Flexibility in purchasing
You may be able to schedule purchases around construction stages and available financing.
Nevertheless, procurement decisions must support the construction programme.
Delaying essential materials can interrupt work and increase costs.
Disadvantages of labour-only construction
1. More management responsibility
A house requires coordination between multiple activities.
Material deliveries must align with the construction schedule.
Different trades must also work in the correct sequence.
If you’re managing procurement yourself, you need a reliable system for making these decisions.
2. Greater exposure to material price changes
If you purchase materials over several months, the prices you pay may differ from your initial estimates.
Your budget needs to account for this uncertainty.
3. Potential disputes over defects
Suppose a section of construction develops a defect.
Was the problem caused by unsuitable materials, incorrect installation or another factor?
When the homeowner supplies materials and the contractor provides labour, responsibility can become contentious.
A clear contract, appropriate specifications and professional supervision can help establish accountability.
4. Material losses and wastage
Poor inventory controls can result in unnecessary purchases, damage or unexplained material discrepancies.
Maintain delivery records and establish who is responsible for storage, handling and issuing materials.
5. Difficulty managing remotely
If you’re living overseas or far from your construction site, coordinating deliveries and verifying material use may be particularly demanding.
You may need to appoint a reliable local representative or professional manager.
Advantages of a full construction contract
1. Centralized coordination
A construction company can coordinate procurement, labour and subcontractors under one agreement.
This may simplify day-to-day administration.
2. Clearer responsibility for delivery
A properly drafted agreement can establish which party is responsible for completing the specified work.
However, contractual responsibility does not eliminate the need for professional inspections and homeowner oversight.
3. More predictable budgeting under some contracts
Where the design and scope are sufficiently defined, a lump-sum contract may provide greater initial price certainty.
But this depends on the actual contract.
Variations, provisional sums, unforeseen conditions and contractual price adjustments can still affect the final amount payable.
A full construction contract is not necessarily a fixed-price contract.
4. Reduced procurement workload
You generally won’t need to personally arrange every delivery of cement, steel or roofing materials.
This can be particularly valuable if you have limited time or live far from the site.
Disadvantages of a full construction contract
A full construction contract may include the contractor’s procurement, management and overhead costs.
You may also have less direct involvement in selecting suppliers.
However, these are not necessarily disadvantages if the contractor provides efficient coordination and reliable workmanship.
The more important concern is transparency.
You should understand the specifications, payment arrangements, exclusions and procedures for approving changes.
Never assume that a contractor’s promise to “handle everything” is sufficient.
Which arrangement is suitable for someone building from abroad?
If you live in the United States, United Kingdom or another country, consider how much time you can realistically devote to managing the project.
A labour-only arrangement may require frequent decisions about materials, deliveries and expenditure.
You could appoint a local professional to coordinate those responsibilities, but their services need to be included in your budget.
A full construction contract may reduce your administrative workload.
However, you should still arrange appropriate independent professional supervision.
The important distinction is between delegating construction activities and abandoning oversight.
Even when a contractor manages the entire build, you remain responsible for making informed decisions about your investment.
What should a labour-only contract include?
Before appointing a labour-only contractor, make sure the agreement clearly establishes:
- The work to be performed.
- Applicable drawings and specifications.
- Labour rates or agreed contract price.
- Who supplies tools and equipment.
- Who supervises the workers.
- Who purchases and delivers materials.
- Who is responsible for material storage.
- Construction milestones and expected duration.
- Payment arrangements.
- Procedures for changes and additional work.
- Responsibilities for defective workmanship.
- Safety and insurance obligations.
- Procedures for delays, termination and disputes.
Have an appropriately qualified professional review the agreement before signing.
Do labour-only contractors need NCA registration?
Kenya’s National Construction Authority regulates construction contractors.
The National Construction Authority Act defines contractor activities broadly, including circumstances involving the supply or control of labour.
The Act also contains specific qualifications and exceptions, so homeowners should not assume that every individual artisan arrangement is regulated identically.
For a substantial residential construction project, establish whether the person or company you intend to appoint requires NCA registration and a valid practising licence.
You should also ensure that your project satisfies applicable registration and approval requirements.
The National Construction Authority publishes guidance on contractor registration and construction project registration.
Can you combine labour-only and full construction arrangements?
Yes.
Some homeowners use different procurement arrangements for different stages of construction.
For example, a homeowner might engage a main contractor for structural work and use separately appointed trades for certain finishes.
However, this creates additional coordination responsibilities.
You need to establish who is responsible for interfaces between contractors, warranties, safety and correcting defective work.
A fragmented arrangement without clear management can be difficult to administer.
Before splitting the project into separate contracts, ask your professional team to evaluate the practical and financial implications.
Frequently asked questions
Is labour-only construction always cheaper?
No. It can reduce certain procurement costs, but the homeowner also assumes additional responsibilities and financial risks. Compare the complete expected project cost before deciding.
Can I supply my own materials under a full construction contract?
Potentially. Some contracts allow specified materials to be supplied by the homeowner. However, the agreement must establish how this affects price, delivery, responsibility and warranties.
Do I need a quantity surveyor for labour-only construction?
A quantity surveyor can help establish quantities, budgets and payment arrangements. This can be especially useful when you are purchasing materials yourself.
Is a full construction contract the same as a turnkey contract?
Not necessarily. The meaning depends on the actual agreement. Always verify the scope, exclusions and handover requirements.
Can I use labour-only construction if I live abroad?
Yes, but you need dependable arrangements for procurement, site management, supervision and reporting.
Final thoughts
The decision between labour-only and full construction should not be based solely on which contractor offers the lowest initial quotation.
Labour-only construction offers greater control over material purchasing but requires more active management.
A full construction contract can simplify coordination, but its value depends on the scope, specifications and contractor’s ability to deliver.
Before choosing either arrangement, establish what your proposed house is likely to cost.
Then obtain quotations that clearly describe the responsibilities each contractor will assume.
Ready to compare labour-only and full construction quotations?
Describe the same work for each contractor and make clear who will supply materials, equipment and supervision. Compare the complete cost, exclusions, construction programme and payment terms.
Request and compare construction quotations.
Already have proposals? Ask for help understanding the differences before choosing an arrangement.