Why did our Kilimani excavation cost so much more than budgeted?

Almost always dewatering. Deep basements here frequently meet groundwater, and pumping through the excavation and casting is a real daily cost that early estimates routinely omit. A proper soil investigation before pricing is the only way to know, and it costs a fraction of the surprise.

Do we need agreement from neighbours before starting?

Practically, yes. Crane over-sail, hoarding lines and access all touch neighbouring occupied buildings. Getting that agreed in writing before establishment is far easier than negotiating it with a crane already on site.

Building a House in Kilimani, Nairobi

We cover Kilimani including Yaya, Dennis Pritt, Wood Avenue, Rose Avenue, Chaka Road, Ring Road Kilimani, Kirichwa, Milimani, State House. Off Argwings Kodhek Road, Ngong Road and Denis Pritt Road. Hoarding and crane positions are agreed with neighbouring buildings before site establishment.

What is different about building in Kilimani

Kilimani's revised plot ratios mean a Dennis Pritt Road plot supports far more floor area than the bungalow standing on it, which changes what the land is worth before anything is built.
Deep basements are common on Kilimani sites, and dewatering during excavation is a cost that almost never appears in an early estimate.
Neighbouring occupied blocks along Wood Avenue restrict crane and hoarding positions, so site logistics are designed before the structure is.

Building in Kilimani

Kilimani is a redevelopment market. Almost nothing built here now is a first building on empty ground: it is a bungalow coming down and something considerably larger going up, on a plot surrounded by occupied buildings.

Plot ratio changes the arithmetic

Revised plot ratios mean a Kilimani plot supports far more floor area than the house currently on it. That single fact usually dominates the financial case, and it means the first question is not “what shall we build” but “what does this land now permit”.

We would rather establish that before design begins, because a brief drawn without reference to the permitted envelope tends to get redrawn.

Excavation is the risk item

Deep basements are normal here and groundwater is common, particularly nearer the Kirichwa. The cost that catches clients is dewatering, pumping continuously through excavation and casting, sometimes for weeks.

It is genuinely hard to price without a soil investigation, and it is genuinely expensive to discover without one. We push clients to invest in the investigation, because it is the cheapest risk reduction available on a Kilimani site.

Building between occupied buildings

Crane over-sail, hoarding lines, dust and noise all involve neighbours who are living or working metres away throughout. Agreeing those in writing before establishment costs a few weeks and prevents the kind of dispute that stops a site entirely.

What we are usually called out for in Kilimani

Custom home building Ground-up houses built against a priced bill of quantities, with staged payments and a defects period. Maisonette construction Two-storey homes: more house on less ground, and an honest account of the premium. Project management and QS BQ preparation, tender comparison, milestone valuations and variation control: including on builds we are not constructing. Turnkey fit-out Shell to finished under one contract: joinery, surfaces, services and finishes, one accountability.

Landmarks we work around here: Yaya Centre, Kilimani Primary, Adams Arcade, Dennis Pritt Road. See what it costs to build.