How much does it cost to build a 3-bedroom house in Siaya?

A standard-finish 3-bedroom bungalow of about 100.8 m² works out at roughly KES 2,862,594 in Siaya on 2026 indicative rates, covering measured works, county approvals, the NCA levy and materials transport. Land, boundary wall, professional fees and contractor markup are separate.

Is building in Siaya more expensive than Nairobi?

Building in Siaya runs about 7% above Nairobi rates — lake region. That adjustment applies to materials and labour, not to statutory fees.

Cost of building a house in Siaya (2026)

Building in Siaya County costs roughly 7% more than Nairobi — lake region. The figures below are computed from that adjustment, not written by hand — they are what the app itself would quote for Siaya.

Nyanza region · the 29th cheapest of Kenya's 47 counties to build in.

Build cost in Siaya by house size (KES)

House	Size	Economy	Standard	Premium	vs Nairobi
1-Bedroom Bungalow	43.2 m²	1,264,345	1,561,129	2,044,538	+102,377
2-Bedroom Bungalow	74.9 m²	1,797,269	2,207,973	2,880,722	+145,620
3-Bedroom Bungalow	100.8 m²	2,328,825	2,862,594	3,738,707	+188,844

Standard finish, measured works plus county approvals, the NCA levy and materials transport. Excludes land, boundary wall, professional fees and contractor markup. Indicative 2026 rates — a budgeting range, not a quotation.

Why Siaya differs from Nairobi

Baseline rates on this site are surveyed for the Nairobi region. Everywhere else moves with three things: how far materials have to be hauled, whether there is a quarry or cement plant within economic distance, and what fundis charge locally. In Siaya those push the figure up by about 7% — lake region.

The adjustment applies to materials and labour. County approval fees and the NCA levy are statutory and do not move with distance, which is why the gap between Siaya and Nairobi is smaller in percentage terms on a small house than a large one.

Price your own house in Siaya

Set the bedrooms, bathrooms and specification and watch the figure move — in 3D, at Siaya rates. No account needed.

Open the cost explorer See every rate behind these figures

Compare with nearby counties

Homa Bay +1% Kisii −1% Migori +1% Nyamira −1% Kisumu −2% Bungoma 0%

Percentages are against Siaya, not Nairobi. All 47 counties →

Need drawings or a 3D visual for this project?

Ian Duncan Gichohi Waiguru — Graduate civil engineer · concept design, drafting, 3D visualisation & take-offs

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An independent service, advertised here. It did not prepare the figures on this page.