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

A standard-finish 3-bedroom bungalow of about 100.8 m² works out at roughly KES 2,754,721 in Mombasa 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.

What should I know about the soil when building in Mombasa?

Coral rock. Coral rock close to the surface gives good bearing for foundations, though excavation may need breaking out rather than digging. It is also quarried as the local walling stone. This is general guidance for the county, not for any one plot: conditions vary from site to site, and the actual site should be examined by a qualified professional, with a soil investigation, before foundations are designed.

Is building in Mombasa more expensive than Nairobi?

Building in Mombasa runs about 3% above Nairobi rates — coastal supply, cement nearby. That adjustment applies to materials and labour, not to statutory fees.

Cost of building a house in Mombasa (2026)

Building in Mombasa County costs roughly 3% more than Nairobi — coastal supply, cement nearby. The figures below are computed from that adjustment, not written by hand — they are what the app itself would quote for Mombasa.

Coast region · the 8th cheapest of Kenya's 47 counties to build in.

Build cost in Mombasa by house size (KES)

House	Size	Economy	Standard	Premium	vs Nairobi
1-Bedroom Bungalow	43.2 m²	1,217,330	1,502,635	1,967,263	+43,883
2-Bedroom Bungalow	74.9 m²	1,729,955	2,124,789	2,771,402	+62,436
3-Bedroom Bungalow	100.8 m²	2,241,578	2,754,721	3,596,797	+80,971

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 Mombasa: climate, ground and materials

General guidance, not an assessment of your site. What follows describes conditions typical of Mombasa 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 Mombasa; other main towns Nyali, Likoni, Changamwe, Kisauni.

An island city joined to the mainland by bridges and the Likoni ferry: plots are small and expensive, and building upwards is often the answer.

Hot and humid coast climate

Much of Mombasa is hot and humid all year, with salt-laden air near the sea and the long rains from April. Where that holds, it asks this of a house:

Cross-ventilation matters more than anything else: windows on opposite walls, and rooms one deep where the plan allows.
Deep eaves and a veranda keep sun and driving rain off the walls; a light-coloured roof reflects heat.
Salt air corrodes steel. Specify pre-painted or aluminium-zinc roofing sheets, galvanised fixings, and adequate cover to reinforcement.

Coral rock

Coral rock close to the surface gives good bearing for foundations, though excavation may need breaking out rather than digging. It is also quarried as the local walling stone.

Walling

Coral blocks cut from local quarries are the traditional and usually the cheapest walling here. The figures on this page are priced in machine-cut stone; ask for a coral block rate.

Bamburi's cement works is in the county.

Every house design, priced at Mombasa rates (KES)

Design	Floor area	Standard finish	Per m²
Starter 2-bedroom bungalow suits Mombasa	68 m²	2,025,061	29,606
Starter 2-bedroom with butterfly roof	68 m²	2,159,394	31,570
2-bedroom A-frame cottage	65 m²	2,563,486	39,560
3-bedroom with gable porch suits Mombasa	102 m²	3,013,002	29,685
3-bedroom bungalow on an eighth acre	136 m²	3,712,630	27,359
L-shaped 3-bedroom with veranda suits Mombasa	126 m²	3,819,678	30,411
Contemporary skillion 3-bedroom	139 m²	3,926,682	28,331
Urban 3-bedroom with moulded concrete roofline	141 m²	4,066,577	28,841
Urban 3-bedroom butterfly-roof bungalow with SQ	141 m²	4,096,111	29,050
T-shaped 4-bedroom bungalow	145 m²	4,178,954	28,880
Contemporary flat-roof 3-bedroom	120 m²	4,222,054	35,067
4-bedroom maisonette on a 40 x 60 plot	208 m²	5,902,450	28,404
4-bedroom bungalow on a quarter acre	249 m²	6,206,984	24,888
Contemporary 4-bedroom maisonette with balcony pergola	234 m²	6,779,213	28,922
Contemporary 3-bedroom with a black-clad box	260 m²	6,997,406	26,944
4-bedroom maisonette with DSQ on an eighth acre	242 m²	7,544,626	31,163
4-bedroom villa with DSQ and glazed stair	298 m²	8,519,455	28,560
Karen 5-bedroom hipped-roof villa	386 m²	8,893,367	23,022
Lavington 4-bedroom framed townhouse	384 m²	9,966,991	25,969
Karen 4-bedroom stone-and-white house	396 m²	10,599,534	26,800
Loresho 4-bedroom villa with floating roof	331 m²	11,093,234	33,555
Karen contemporary 5-bedroom villa	412 m²	11,115,396	26,986
14-bedsitter block on an eighth acre	414 m²	12,064,746	29,149
8-flat apartment block on a quarter acre	833 m²	18,952,004	22,760
16-flat apartment scheme on a half acre	1665 m²	37,176,991	22,323
14-storey apartment tower	3992 m²	81,148,870	20,326
Twin 17-storey towers with pool on an acre	9661 m²	192,320,060	19,906

Measured house works at Mombasa 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.

Mombasa against the rest of Coast

Coast has 6 counties. The cheapest to build in is Mombasa itself, where a standard 3-bedroom bungalow comes to about KES 2,754,721; the dearest is Tana River, at about KES 3,079,881.

Against Nairobi, Mombasa is about 3% dearer — coastal supply, cement nearby. The cheapest design in the catalogue here is the starter 2-bedroom bungalow at KES 2,025,061. How county adjustments work →

Price your own house in Mombasa

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

Open the cost explorer See every rate behind these figures

Compare with nearby counties

Kilifi +2% Kwale +3% Taita-Taveta +5% Lamu +12% Tana River +12% Kirinyaga 0%

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