A 50 by 100 foot plot has a perimeter of 300 feet, or about 91 metres.
That 91 metre figure is the starting point for a perimeter wall estimate. The final cost depends on wall height, foundation design, material, columns, finishes and the gate.
What goes into a perimeter wall?
A wall quotation can include several separate jobs:
- setting out the boundary
- excavation
- strip or pad foundations
- concrete and reinforcement
- stone or block masonry
- structural columns
- coping
- plaster, pointing or paint
- gate columns
- labour and transport
If a quote only gives a price for blocks or stone, it is not the cost of the finished wall.
Why per-metre quotes vary so much
Suppose two contractors differ by KES 1,000 per metre.
Across 91 metres, that becomes a KES 91,000 difference.
That is why it is worth asking each contractor to price the same drawing and specification.
A low per-metre number may exclude the foundation, reinforcement, gate columns or finishing.
How high should the wall be?
There is no single correct height for every property.
A boundary wall around an occupied home may be designed differently from a wall around an undeveloped plot. Local planning requirements, visibility at road junctions, drainage and security design may also affect the specification.
The structural design should match the soil and wall height rather than copying a neighbour’s wall.
Blocks versus natural stone
Both can work, but the cheapest material depends on local supply and transport.
Natural stone may make sense where good building stone is readily available. Concrete blocks can be easier to standardise in some locations.
Compare the installed cost, not only the price per block or stone.
Gate allowance
Leave the gate opening out of the masonry length, but add the cost of:
- gate columns
- steel or aluminium gate
- hinges and locks
- automation if required
- electrical work if required
The gate can be one of the more expensive individual parts of the boundary.
Get the boundary confirmed before building
Do not use the fence line, hedge or neighbour’s wall as the only guide.
Confirm the actual parcel boundaries and beacons before putting a permanent structure on the boundary.
For cheaper alternatives, see our guide to chain link fencing in Kenya and our broader 50 by 100 fencing cost guide.
