hullo! Get a second quote, though ground floors are generally more expensive. it should not go beyond 100k ,if you buy the materials

get also an opinion from somebody who has done the same so as to average down 200k is on the higher side

who knows where i can buy genuine east african cables wires at a reasonable price?

I went thro this.

There are two ways to do wiring one is called radial and another is called star. With the radial method each socket is supplied with power from two sides such that if the wires are destroyed from the right side you still have power from the left side.
As you can imagine this method consumes more cables by 80% or so. Star method powers each socket directly.

Ask ur fundi what he is using, if he has no clue what ure talking about fire him on the spot, he is a quack.

Me experience u dont need radial installation unless ur doing a factory.

For genuine cables never let the fundi take u to a kashop he knows in Nyamakima, youll be given fake cables with EA Cables packaging at the price of genuine wires.

Go to their racecourse rd distributorship opposite OTC huko downtown. The'll sell you even 1 roll. The only catch is they dont allow fundis to buy from them.

it'll be difficult to answer your question without information on the soil type, type of finishes, total floor area otherwise 1.5million sounds rather low for a 4 bedroom house