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Cost of building a house in Tharaka-Nithi (2026)

Building in Tharaka-Nithi County costs roughly 8% more than Nairobi — eastern hinterland. The figures below are computed from that adjustment, not written by hand — they are what the app itself would quote for Kathwana.

Eastern region · the 35th cheapest of Kenya's 47 counties to build in.

Build cost in Tharaka-Nithi by house size (KES)
HouseSize Economy Standard Premium vs Nairobi
1-Bedroom Bungalow 43.2 m² 1,276,259 1,575,918 2,063,993 +117,166
2-Bedroom Bungalow 74.9 m² 1,814,372 2,229,047 2,908,275 +166,694
3-Bedroom Bungalow 100.8 m² 2,351,003 2,889,925 3,774,475 +216,175
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 Tharaka-Nithi: climate, ground and materials

General guidance, not an assessment of your site. What follows describes conditions typical of Tharaka-Nithi 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 Kathwana; other main towns Chuka, Chogoria, Marimanti.

Chuka and Chogoria are on the wet upper slopes; Tharaka lower down is hot and dry.

Lowland to highland climate

Much of Tharaka-Nithi is cool and wet on the high ground and hot and dry in the valleys and lowlands, sometimes within a short drive. Where that holds, it asks this of a house:

  • Where you build in the county matters more than the county: a house on the hills needs a ceiling and warmth, one in the valley needs shade and ventilation.
  • Sloping sites are common; budget for cut and fill, retaining walls and stepped foundations.
  • Rain on steep ground runs fast — cut-off drains above the house protect the foundations.
Every house design, priced at Tharaka-Nithi rates (KES)
DesignFloor area Standard finish Per m²
Starter 2-bedroom bungalow suits Tharaka-Nithi 68 m² 2,124,384 31,058
Starter 2-bedroom with butterfly roof 68 m² 2,265,505 33,121
2-bedroom A-frame cottage 65 m² 2,690,129 41,514
3-bedroom with gable porch suits Tharaka-Nithi 102 m² 3,161,269 31,146
3-bedroom bungalow on an eighth acre 136 m² 3,895,260 28,705
L-shaped 3-bedroom with veranda suits Tharaka-Nithi 126 m² 4,007,874 31,910
Contemporary skillion 3-bedroom 139 m² 4,120,069 29,726
Urban 3-bedroom with moulded concrete roofline 141 m² 4,267,018 30,263
Urban 3-bedroom butterfly-roof bungalow with SQ 141 m² 4,298,025 30,482
T-shaped 4-bedroom bungalow 145 m² 4,385,021 30,304
Contemporary flat-roof 3-bedroom 120 m² 4,430,978 36,802
4-bedroom maisonette on a 40 x 60 plot 208 m² 6,193,941 29,807
4-bedroom bungalow on a quarter acre 249 m² 6,513,017 26,115
Contemporary 4-bedroom maisonette with balcony pergola 234 m² 7,114,081 30,350
Contemporary 3-bedroom with a black-clad box 260 m² 7,342,902 28,275
4-bedroom maisonette with DSQ on an eighth acre 242 m² 7,918,046 32,706
4-bedroom villa with DSQ and glazed stair 298 m² 8,940,756 29,972
Karen 5-bedroom hipped-roof villa 386 m² 9,331,487 24,156
Lavington 4-bedroom framed townhouse 384 m² 10,459,126 27,252
Karen 4-bedroom stone-and-white house 396 m² 11,123,414 28,125
Loresho 4-bedroom villa with floating roof 331 m² 11,643,515 35,219
Karen contemporary 5-bedroom villa 412 m² 11,665,101 28,320
14-bedsitter block on an eighth acre 414 m² 12,662,438 30,593
8-flat apartment block on a quarter acre 833 m² 19,886,663 23,882
16-flat apartment scheme on a half acre 1665 m² 39,011,587 23,425
14-storey apartment tower 3992 m² 85,145,788 21,327
Twin 17-storey towers with pool on an acre 9661 m² 201,789,880 20,886
Measured house works at Tharaka-Nithi 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.

Tharaka-Nithi against the rest of Eastern

Eastern has 8 counties. The cheapest to build in is Machakos, where a standard 3-bedroom bungalow comes to about KES 2,700,649; the dearest is Marsabit, at about KES 3,353,171. In Tharaka-Nithi the same house is KES 2,889,925.

Against Nairobi, Tharaka-Nithi is about 8% dearer — eastern hinterland. The cheapest design in the catalogue here is the starter 2-bedroom bungalow at KES 2,124,384. How county adjustments work →

Price your own house in Tharaka-Nithi

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

Open the cost explorer See every rate behind these figures

Compare with nearby counties

Kitui +1% Makueni −2% Meru −2% Embu −4% Isiolo +4% Machakos −7%

Percentages are against Tharaka-Nithi, not Nairobi. All 47 counties →