You want to build a house in Kenya, but you don’t have enough money to construct the entire property at once.
Perhaps you have KSh 2 million saved but your dream house will cost KSh 8 million. Or maybe you have a plot and intend to finance construction gradually using your monthly salary.
Does that mean you should wait until you’ve saved the entire amount?
Not necessarily.
Building a house in phases allows you to divide construction into manageable stages, completing each one as money becomes available.
However, successful phased construction requires careful planning. Without it, you risk creating additional expenses, damaging unfinished work or discovering that your original design cannot accommodate future expansion.
Here’s how to approach phased construction in Kenya.
What does building a house in phases mean?
Phased construction involves dividing your project into separate stages rather than constructing the entire house continuously.
For example, a homeowner might complete the foundations during the first year, construct the walls the following year and install the roof when additional funds become available.
Others may build a smaller, fully functional section of their planned home before expanding later.
The important distinction is that these stages should form part of a complete construction plan.
You shouldn’t design each new stage independently without considering what comes next.
1. Design the entire house before starting
This is arguably the most important rule of phased construction.
Even if you intend to build gradually, your architect and structural engineer should understand the complete building you ultimately want.
Imagine constructing a bungalow today with the intention of adding another storey in five years.
If the original foundation and structural system weren’t designed to accommodate the proposed additional floor, expansion could require expensive alterations or may prove impractical.
An architect should therefore develop the complete design while considering which components can safely be constructed later.
Architecture Kenya discusses this approach in its 2026 guide to building a home in phases.
Plan the final house first. Then decide how to construct it progressively.
2. Establish the total project budget
One danger of phased construction is focusing exclusively on the amount required for the next stage.
For example, you might have enough money to build the foundation without knowing how much the completed house will cost.
Before beginning, establish an indicative budget for the entire project.
That should include:
- Professional fees and approvals
- Site preparation
- Foundations
- Structural work
- Roofing
- Plumbing
- Electrical installation
- Finishing
- External works
- Contingency
You can start with our guide to construction cost per square metre in Kenya.
Once your drawings are sufficiently detailed, consider obtaining a Bill of Quantities to understand the costs associated with individual construction stages.
3. Divide your project into manageable stages
A conventional residential construction project can be divided into several stages.
However, your architect, engineer and contractor should determine the appropriate sequence and stopping points for your specific design.
Stage 1: Design, approvals and site preparation
Before construction begins, complete the necessary professional design and obtain applicable approvals.
This may involve:
- Architectural drawings
- Structural engineering
- Site survey
- Soil investigation, where appropriate
- Cost planning
- County approvals
Kenya’s National Construction Authority also provides official information about construction project registration and the required professional documentation. Requirements must be addressed even if construction will proceed in phases.
Stage 2: Foundations
Foundation work may include excavation, concrete, reinforcement, foundation walls, backfilling and the ground slab.
The amount required will depend on your building’s structural design and ground conditions.
Don’t assume that you can complete your foundation for a fixed percentage of your overall budget.
Obtain a project-specific estimate.
Read our guide to foundation costs in Kenya.
Stage 3: Walls and structural work
Once the foundations are complete, the building’s walls and structural elements can be constructed.
For a maisonette, this stage may also include upper-floor slabs, beams, columns and staircases.
If construction must pause, ask your engineer how to protect the completed work and safely resume later.
Stage 4: Roofing
Roofing is an important construction milestone because it provides substantial protection against weather exposure.
Depending on the design, your team may recommend completing the structure and roof within the same funded phase.
Avoid leaving unfinished elements exposed without an appropriate protection plan.
See Roofing Costs in Kenya for more information.
Stage 5: Plumbing and electrical installation
Once the building is sufficiently developed, the appropriate plumbing and electrical work can proceed.
Some services need to be installed before plastering and other finishing work.
Planning these systems early can reduce the risk of cutting into completed walls when construction resumes.
Read our guides to plumbing costs and electrical installation costs.
Stage 6: Finishing
Finishing may include:
- Plastering
- Flooring
- Ceilings
- Painting
- Doors
- Kitchen cabinetry
- Sanitaryware
- Electrical fittings
Depending on the layout and professional advice, some homeowners may be able to complete essential rooms before finishing the remaining spaces.
However, any area intended for occupation must be safe and meet applicable requirements.
See House Finishing Costs in Kenya.
4. Decide how you’ll finance each phase
Phased construction is easier to manage when funding is reasonably predictable.
Consider someone planning a hypothetical KSh 8 million house.
They already have KSh 2 million available and expect to save KSh 150,000 every month.
Here’s a simplified illustration:
| Funding source | Amount |
|---|---|
| Existing savings | KSh 2M |
| Additional savings over 12 months | KSh 1.8M |
| Total available after one year | KSh 3.8M |
These are illustrative financing figures, not construction-stage estimates.
The homeowner could use this information to plan which stages can realistically be completed and when additional work might begin.
However, remember that construction costs can change during prolonged projects.
A house estimated at KSh 8 million today may cost more if you complete it several years later.
5. Avoid starting a phase you cannot finish
One of the biggest risks of phased construction is running out of money halfway through an important stage.
For example, excavating foundations without sufficient funds to complete the planned work can create unnecessary risks.
Similarly, beginning roofing without enough money to complete and weatherproof the installation may expose your investment.
Before starting each stage, ask:
- What work will this phase include?
- How much will it cost?
- Do I have enough money to complete it?
- What contingency is appropriate?
- Can the project safely pause afterward?
Your construction professionals should help determine appropriate stopping points.
6. Understand the hidden costs of building slowly
Phased construction can make homeownership more financially accessible.
However, it isn’t necessarily cheaper than continuous construction.
Potential additional costs include:
- Repeated contractor mobilization
- Site-security expenses
- Material price increases
- Additional transport
- Protection and maintenance of unfinished work
- Replacement of damaged materials
- Design revisions
For example, roofing materials purchased two years after your foundation is constructed may cost more than originally estimated.
Your financing strategy should therefore consider the potential cost of prolonged construction.
See How to Avoid Going Over Budget When Building a House.
7. Keep proper records throughout construction
If your project will take several years, keeping accurate records becomes especially important.
Maintain copies of:
- Approved drawings
- Contracts
- Quotations
- Material specifications
- Payments and receipts
- Progress photographs
- Inspection records
- Approved variations
These records are useful if you change contractors or need to review earlier decisions.
They can also help you avoid paying twice for work that has already been completed.
For larger projects, your quantity surveyor can help track expenditure and update the expected final cost.
8. Learn from homeowners who have already built
One aspect of phased construction that often receives insufficient attention is the value of learning from other homeowners.
Imagine you’re about to begin roofing your house.
Wouldn’t it be useful to see how someone with a similar property approached the same stage?
You could learn:
- Which materials they considered
- How they compared contractor quotations
- Which unexpected costs they encountered
- What they would do differently
- How long the work actually took
Someone else’s experience cannot replace professional architectural or engineering advice.
However, it can help you ask better questions and prepare for decisions you haven’t encountered before.
In a country where many homeowners finance their projects gradually, access to documented experiences could be particularly valuable.
Building a house shouldn’t have to mean figuring out every decision alone.
Plan phased construction with MyJenga
Start by estimating the complete house, then discuss a phased programme and safe stopping points with your architect, engineer and QS.
MyJenga’s calculator provides an indicative project cost range with assumptions and exclusions. It does not replace a BOQ or a site-specific professional estimate.
Calculate your building cost with MyJenga →
Phased construction checklist
Before starting, review the following:
- I’ve designed the complete house, including future expansion.
- My structural engineer understands the intended phases.
- I’ve established the approximate total project cost.
- I’ve obtained the necessary approvals.
- I’ve checked applicable NCA requirements.
- I’ve identified appropriate construction stages.
- I have sufficient money to complete my next stage.
- I’ve included an appropriate contingency.
- I’ve established a plan for protecting unfinished work.
- I know how I intend to finance subsequent stages.
- I’m maintaining proper construction records.
Frequently asked questions
Is it possible to build a house in phases in Kenya?
Yes. Phased construction allows you to complete different parts of a project as funds become available. However, the entire building should be properly designed and the work should comply with applicable requirements.
Can I build the ground floor now and add another floor later?
Potentially, but the building must be structurally designed for the intended future expansion. Consult your architect and structural engineer before beginning.
Is phased construction cheaper?
Not necessarily. It may reduce your immediate financing requirements, but prolonged construction can introduce additional expenses.
How much money do I need to start?
That depends on the project and your intended first phase. Obtain a detailed estimate and aim to have sufficient funding to complete the phase you’re starting.
Can I move into my house before completing every planned phase?
Potentially, if the completed portion is safe, suitable for occupation and satisfies applicable regulatory requirements. Your professional team should advise you before you occupy any partially completed development.
Final takeaway
Building a house in phases can be a practical way to finance your home gradually.
However, successful phased construction starts with designing and budgeting for the entire house, not simply the first stage.
Plan appropriate stopping points, protect completed work, maintain accurate records and establish a credible financing strategy.
Most importantly, seek professional advice and learn from other homeowners wherever possible.
A house may take several years to complete, but every stage should move you closer to a properly planned finished home.