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.

Building in Siaya: climate, ground and materials

General guidance, not an assessment of your site. What follows describes conditions typical of Siaya or of a named part of it. It does not hold everywhere in the county, and ground, drainage, access and materials can change from one plot to the next. Before you design, budget or build, have the actual site examined by a qualified professional — a registered engineer, with a soil investigation where the ground is in any doubt. Do not base foundations or a budget on this page alone.

County headquarters Siaya; other main towns Bondo, Ugunja, Usenge.

The lake shore around Bondo and Usenge is hot; the county inland towards Ugunja is greener and wetter.

Warm and wet lake basin climate

Much of Siaya is warm and humid, with heavy afternoon storms and some of the highest lightning frequency in the country. Where that holds, it asks this of a house:

Size gutters and downpipes for intense storms, and drain the site away from the walls.
A raised plinth and deep eaves keep splash-back and driving rain off the base of the walls.
Ask about lightning protection, and earth the electrical installation properly.

Walling

Burnt clay bricks made locally are widely used for walling here. The figures on this page are priced in machine-cut stone; ask for a brick rate.

Every house design, priced at Siaya rates (KES)

Design	Floor area	Standard finish	Per m²
Starter 2-bedroom bungalow	68 m²	2,104,320	30,765
Starter 2-bedroom with butterfly roof	68 m²	2,244,049	32,808
2-bedroom A-frame cottage	65 m²	2,664,488	41,119
3-bedroom with gable porch suits Siaya	102 m²	3,131,291	30,850
3-bedroom bungalow on an eighth acre	136 m²	3,858,319	28,433
L-shaped 3-bedroom with veranda suits Siaya	126 m²	3,969,796	31,607
Contemporary skillion 3-bedroom	139 m²	4,080,964	29,444
Urban 3-bedroom with moulded concrete roofline	141 m²	4,226,493	29,975
Urban 3-bedroom butterfly-roof bungalow with SQ	141 m²	4,257,155	30,193
T-shaped 4-bedroom bungalow suits Siaya	145 m²	4,343,351	30,016
Contemporary flat-roof 3-bedroom	120 m²	4,388,872	36,452
4-bedroom maisonette on a 40 x 60 plot	208 m²	6,135,134	29,524
4-bedroom bungalow on a quarter acre	249 m²	6,451,096	25,866
Contemporary 4-bedroom maisonette with balcony pergola	234 m²	7,046,590	30,062
Contemporary 3-bedroom with a black-clad box	260 m²	7,273,260	28,006
4-bedroom maisonette with DSQ on an eighth acre	242 m²	7,842,753	32,395
4-bedroom villa with DSQ and glazed stair	298 m²	8,855,844	29,688
Karen 5-bedroom hipped-roof villa	386 m²	9,243,062	23,927
Lavington 4-bedroom framed townhouse	384 m²	10,359,952	26,993
Karen 4-bedroom stone-and-white house	396 m²	11,017,910	27,858
Loresho 4-bedroom villa with floating roof	331 m²	11,532,901	34,885
Karen contemporary 5-bedroom villa	412 m²	11,554,389	28,051
14-bedsitter block on an eighth acre	414 m²	12,541,820	30,302
8-flat apartment block on a quarter acre	833 m²	19,698,077	23,656
16-flat apartment scheme on a half acre	1665 m²	38,641,363	23,202
14-storey apartment tower	3992 m²	84,339,022	21,125
Twin 17-storey towers with pool on an acre	9661 m²	199,878,045	20,689

Measured house works at Siaya rates, standard finish; external works, land and fees excluded. Indicative only: the foundations in particular depend on the ground at your site, which a professional has to assess. Open any design to see its plan and 3D view and change it.

Siaya against the rest of Nyanza

Nyanza has 6 counties. The cheapest to build in is Kisumu, where a standard 3-bedroom bungalow comes to about KES 2,808,657; the dearest is Migori, at about KES 2,889,925. In Siaya the same house is KES 2,862,594.

Against Nairobi, Siaya is about 7% dearer — lake region. The cheapest design in the catalogue here is the starter 2-bedroom bungalow at KES 2,104,320. How county adjustments work →

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 →