Registration block · Active
Nairobi Block 171 (Santon Njiru Settlement)
Nairobi Block 171, Santon Njiru Settlement, is a land registration block in Nairobi: parcels here are numbered Nairobi/Block 171/ and the plot number. It covers about 50 ha in Clay City ward and holds about 1,586 parcels.
From the survey blocks and parcel cadastre on the Nairobi Maps map. Updated 2026-10-24.
Finding a plot in Block 171
Type the block and plot number into the search box on the map — 171/ followed by the plot number, or Nairobi Block 171/ and the plot. Capital letters, spaces and words like “Nairobi” or “Block” do not matter. The map opens on the parcel, with its size, its zoning and its survey plans. The details behind a parcel are for Gold and Platinum members; the outlines are free to see.
Zoning in Block 171
| Zone | Share of block | Most floors | Coverage | Plot ratio | Smallest plot |
|---|---|---|---|---|---|
| Sunton, Hunters and Mwiki | 100% | 10 | 50% | 500% | 0.05 ha |
Wards
Blocks next to Block 171
Survey plans for Block 171
The Registry Index Map sheets for this block show every parcel in it with its number. On the map, tap the block in the Survey Blocks layer: each sheet is listed and can be bought on its own by Gold and Platinum members. A parcel’s own survey plan (FR) is in its details.
The block’s gazetted boundary
Nairobi Block 171 (Santon Njiru Settlement) commences at co-ordinate (268539mE, 9864309mN), along Kasarani- Mwiki road, where it borders Nairobi block 154 (Chieko) to the West. It then runs in North-East direction for 141 meters to coordinate (268623mE, 9864422mN). It continues in North-East direction for 115.4 meters to co-ordinate (268530mE, 9864491mN). The boundary then runs in North-East direction for 1141 meters to its intersection with Gatharaini river at coordinate (269118mE, 9865468mN), where it boarders block 170 (Hunters) to the North and Kiambu county to the East. The boundary then runs in South-East direction along Gatharaini River for 396.8 meters to co-ordinate (269427mE, 9865302mN). It runs in South-West direction for 1272.6 meters to its intersection with Kasarani-Mwiki road at co-ordinate (268951mE, 9864123mN), where it boarders block 224 (Mwiki) to the South and block 204 (Kasarani) to the West. It runs in North-West direction along Kasarani-Mwiki road for 452 meters to the point where it commenced.
The official description of the block’s boundary, as recorded. Coordinates are in metres on the survey grid.
Questions about Block 171
What is Nairobi Block 171?
A land registration block in Nairobi, known as Santon Njiru Settlement. Parcels in it are numbered Nairobi/Block 171/ followed by the plot number, and the block has its own Registry Index Map sheets.
How many parcels are in Nairobi Block 171?
About 1,586 on the Nairobi Maps cadastre; half of them are smaller than 0.026 ha.
Where is Nairobi Block 171?
In Clay City ward, Kasarani sub-county, covering about 50 ha.
How do I find a plot in Nairobi Block 171?
Type the block and plot number into the Nairobi Maps search box — for example 171/ followed by the plot number, or Nairobi Block 171/ and the plot. The map opens on the parcel with its size, zoning and survey plans.