"How much?" That is the question. Always the first one. Nobody wants to start a build and realise two months in they are bleeding money they did not budget for. Fair enough. The honest answer is it depends. Location, finish level, site conditions, project management. But there are ranges that hold up across projects, and these are current as of mid-2026 from price lists prepared by registered cost experts in Nairobi, Kiambu, Machakos, and the Rift Valley.

Cost Per Square Metre by Finish Level

Construction in Kenya is priced per square metre of floor area. Covers materials, labour, contractor overhead. Does not cover land, approvals, professional fees, or utility connections.

Basic finish: KES 48,000 to 65,000 per m2. Cement floor, painted blockwork, basic plumbing and electrical, corrugated iron roof. It works. No frills.

Mid finish: KES 65,000 to 95,000 per m2. Tiled floors, plastered and painted walls, decent sanitaryware, ceiling board, proper roof finish. This is where most people land.

Luxury finish: KES 95,000 to 122,000+ per m2. Natural stone cladding, imported fixtures, custom joinery, landscaping. The house that turns heads.

Regional variation matters. Coast and Rift Valley run 10 to 15 percent below Nairobi rates. Western Kenya drops another 5 to 10 percent. Labour costs differ, material transport costs differ, and site conditions change the foundation equation entirely.

Here is what a real budget looks like. A 120 square metre three-bedroom bungalow with mid-finish spec:

Item	Estimated Cost (KES)
Construction (materials and labour)	7,200,000 - 9,600,000
Architectural and structural drawings	200,000 - 350,000
Price breakdown	80,000 - 150,000
County plan approvals	150,000 - 250,000
Structural engineer inspections	100,000 - 200,000
Project supervision (8-12 months)	500,000 - 800,000
Contingency (10 percent)	800,000 - 1,100,000
Total estimated budget	KES 9,000,000 - 12,500,000

Hidden Costs That Blow the Budget

Here is where most people get caught. These are the items that never make it into the first quote but always show up on the final bill. No road access, steep terrain, or bad soil means more foundation work and higher material transport costs. Adds up fast. Find rock close to the surface and excavation costs multiply: normal earth is one price, rock is another game entirely. Utility connections, water, electricity, sewer, are set by the utility companies and paid separately. Not part of the construction contract. Everyone forgets the boundary wall, gate, and landscaping. Budget KES 500,000 to 2,000,000 depending on plot size. And professional fees, architects, cost experts, structural engineers, lawyers, all charge separately. Allocate 10 to 15 percent of construction cost for these.

Every budget needs a 10 percent contingency. Ground conditions differ from the geotechnical report. Material prices go up mid-build. You make design changes once you see the walls going up. This is not extra profit for the contractor, it is an allowance for things you cannot know until the ground is open. If it does not get used, it comes back to you.

Material prices fluctuate but current ranges give you a baseline. Cement runs KES 720 to 980 per bag depending on brand and region. Steel reinforcement sits at KES 110 to 180 per kilogram. Buying in bulk directly through platforms like Jumba can cut material costs by roughly 10 percent. Worth exploring once you have a full price breakdown and know exactly what you need.

Overruns happen when you cannot see what is being spent against the price breakdown. BackHome Construction tracks every payment, receipt, and delivery against the original budget in a dashboard you can check from anywhere. You see what was approved, what was spent, and what changed, before the next payment is requested.