Material costs are going up.
According to the Kenya National Bureau of Statistics, the Construction Input Price Index rose from 119.05 in Q1 2025 to 119.75 in Q2 2025. Cement was up 2.63%. Steel and reinforcement bars up 1.52%. Concrete and asphalts up 2.86%. Timber up 2.50%.
These are not dramatic numbers individually. But on a KES 5 million project, a 2.63% increase in cement costs is real money. On a KES 20 million commercial build, it is significant. And when multiple materials are rising simultaneously across the duration of a project — which is exactly what is happening — the cumulative effect on budget is substantial.
In this environment, how your project is structured matters more than ever.
Specifically: whether the team that designs your building is the same team that builds it.
The Standard Model and Its Problem
The conventional approach to construction in Kenya looks like this.
A client hires an architect to produce drawings. The architect produces the drawings. The client then takes those drawings to a contractor — sometimes several contractors, for the purpose of comparing quotes. The contractor builds what is on paper.
On the surface this seems logical. Separation of roles. Independent pricing. Competitive tension.
In practice it creates a gap — and that gap is where budgets go wrong.
The architect specifies a material. The contractor prices a different one. The client doesn’t know the difference and approves the quote. Construction begins with a specification that has already drifted from what was designed.
Or: the architect draws a detail. The contractor interprets it differently on site. A question arises mid-build. The architect is not present — they completed their scope at drawing stage. The contractor makes a decision. It is not the wrong decision, necessarily, but it is not the architect’s decision. The design intent is lost.
Or: prices move between the time the architect specifies and the time the contractor procures. The contractor substitutes. The client is informed after the fact, if at all.
Each of these scenarios is common. Each of them costs the client money. None of them are inevitable.
What Design-Build Changes
When the team that designs a building is the same team that builds it, the gap closes.
There is no handoff between architect and contractor. There is no moment where a drawing leaves one set of hands and enters another, losing context in the transfer. The person who specified the Grade 316 stainless steel fitting for the coastal project is the same person overseeing procurement. They know why the specification matters. They will not substitute it.
This matters particularly right now, when material prices are moving. A design-build team manages procurement as part of the same process as design. When cement prices rise between concept and construction, the response is integrated — the design team and the construction team discuss it together and find the right solution, whether that is value engineering a detail, timing a procurement to lock in a price, or adjusting the schedule to sequence around a price spike.
In a separated model, that conversation either doesn’t happen or happens too late. The contractor absorbs the increase and passes it to the client via a variation order. The client is surprised. The relationship is strained. The budget is over.
One Point of Accountability
Beyond budget protection, design-build changes something more fundamental: accountability.
In the conventional model, when something goes wrong on a construction project, the first question is always: whose fault is it? The architect blames the contractor for not following the drawings. The contractor blames the architect for drawings that were not buildable. The client is caught in the middle, paying for lawyers and delays while two separate parties argue about whose scope the problem falls under.
This is not a hypothetical. It is one of the most common dynamics in Kenyan construction projects above a certain size.
In a design-build model, there is one answer to the question of who is responsible: the firm that took the project from first brief to key handover. No scope gaps. No blame gaps. One contract, one team, one accountability.
For a client who has saved for years to build their home — or a business owner investing in a commercial facility — this is not a small thing. It is the difference between a project that delivers what was promised and one that delivers disputes.
What This Looks Like at Art Seed
At Art Seed, we do not separate design from construction.
The same team that develops your architectural concept also manages the structural and mechanical engineering, procures materials, supervises the construction, and hands you the key at the end. Every decision — from the specification of a foundation detail to the selection of a roof finish — is made with full knowledge of the design intent and the construction reality.
When we design a coastal property in Malindi, we specify marine-grade materials because we are the team that will source and install them. We have no incentive to substitute. We have every incentive to get it right, because we are accountable for the outcome.
When material prices rise mid-project — as they are right now — we manage that within our team. We do not present the client with a variation order for a price movement they couldn’t have anticipated. We design around it, sequence around it, or have an honest conversation about it before it becomes a surprise.
This is what construction should look like. Not two separate teams transferring paper between them, but one integrated process from concept to completion.
Before You Break Ground
If you are planning a construction project in Kenya — residential, commercial, or renovation — the most important decision you will make is not which contractor to hire or which architect to use.
It is whether to keep those two things separate at all.
The Building Cost Index rose 0.78% between April and June 2025, driven by cement, steel, timber, and sand. It will not stop moving. In that environment, a fragmented project structure is a liability. An integrated one is a protection.
Talk to us before you break ground.