Registration block · New block
Nairobi Block 221 (Ruai River)
Nairobi Block 221, Ruai River, is a land registration block in Nairobi: parcels here are numbered Nairobi/Block 221/ and the plot number. It covers about 6.6 km² in Mwiki ward and holds about 4,007 parcels.
From the survey blocks and parcel cadastre on the Nairobi Maps map. Updated 2026-10-24.
Finding a plot in Block 221
Type the block and plot number into the search box on the map — 221/ followed by the plot number, or Nairobi Block 221/ 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 221
| Zone | Share of block | Most floors | Coverage | Plot ratio | Smallest plot |
|---|---|---|---|---|---|
| Sunton, Hunters and Mwiki | 61% | 10 | 50% | 500% | 0.05 ha |
| Ruai Industrial | 29% | 3 | 60% | 180% | 0.4 ha |
| Ruai Residential | 9% | 4 | 50% | 200% | 0.05 ha |
Wards
Blocks next to Block 221
Survey plans for Block 221
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 221 commences at co-ordinate (274443mE, 9864547mN) along Gatharaini River and runs eastwards along the river for a distance of 5000M to co-ordinate (278048mE, 9863488mN) where it intersects with Nairobi River. Thence generally westwards along Nairobi River for a distance of 5490 meters to co-ordinate (274405mE, 9862212mN) where it turns northwards and runs for a distance of 2422 meters to intersect with Gatharaini River at the point where it commenced. Nairobi Block 221 abuttals are Kiambu County to the North, Nairobi Block 18 to the East, Nairobi Block 105 to the South and Nairobi Block 172 and Nairobi Block 223 to the West.
The official description of the block’s boundary, as recorded. Coordinates are in metres on the survey grid.
Questions about Block 221
What is Nairobi Block 221?
A land registration block in Nairobi, known as Ruai River. Parcels in it are numbered Nairobi/Block 221/ followed by the plot number, and the block has its own Registry Index Map sheets.
How many parcels are in Nairobi Block 221?
About 4,007 on the Nairobi Maps cadastre; half of them are smaller than 0.0269 ha.
Where is Nairobi Block 221?
In Mwiki ward, Kasarani sub-county, covering about 6.6 km².
How do I find a plot in Nairobi Block 221?
Type the block and plot number into the Nairobi Maps search box — for example 221/ followed by the plot number, or Nairobi Block 221/ and the plot. The map opens on the parcel with its size, zoning and survey plans.