@Kaigagio. In the the ideal sittuation, construction costs are not supposed to increase, ie if you have a fixed price contract with the contractor, this covers all the above mentioned flactuations.Thus with the advice of a QS, you can control the flactuations!(though if you tender fixed price contract Vs a flactuating contract, the fixed price contract is normally higher to cover for unforseen and possible price increases, for the flactuating contract, the risk element of flactuations is borne by the client)i would advice one to have a fixed price contract..or if you are really frugal, have a labour only contract.
Without a QS the costs will increase. Where am i coming from ok
1. How do you estimate the entire cost of the project so as to have a baseline? I contend the notion that the originators of the design can come up with the cost estimate, since they dont have the necessary training on how to estimate costs. Who prepares the estimate? The Qs
2. How does one track the costs. Of course, the QS, the work of the Arch & Eng is purely design & specifications (& by the way in most jobs it is the QS who prepares the specs, for building works & not the Arch)
3. Variations, they are bound to arise, no job can be finished without a variation, who tracks and records them? the QS. Who measures their cost & time implication? thus advising whether it is necessary?
4. The claims from the contractor, be they frivolous or justifiable, who reviews them? the QS, since he has been on board from the word go and has the training on how to handle & measure such claims
5. In as much as you want to transfer the responsibilties to the originator, they will charge you for that extra responsibilty,and am imagine at a higher premium than the QS..
6. Who will measure the work done? the QS, again the designers are not trained to measure building works.
7. If you are frugal and you choose a labour only contract, who will measure the exact amount of material required? your fundi? architect? how many times have you painted your house and after the job is done, there are paint left overs? at times more than 5 tins?
8.Who will track the progress of work and advice you accordingly? the QS! Architects cant, they are trained to design, same for engs!
In an ideal sittuation, the costs will not increase, if there are proper controls by the client, who ensures this controls the QS!
9. How will you know if you are getting the best or rather lowest rates from the contractor? am sure you know an architect, just call one and ask him the average cost of class 20 reinforced concrete per cubic meter, better yet, the cost of a tonne of sand? a tin of paint? a kg of reinforcement steel..i can bet, they will tell you a figure which is wrong!call up a QS and ask him..
Actually, IMHO, the Architects shouldnt be paid the 6%! since they dont do any contract administration! they always rely on the QS for his support!
am sure am repeating this but, the Archs & Engs can be trained to do the QSs work, but ofcourse the fee which they charge you will of course be higher than the normal fee. so no saving whatsoever!
ask yourself why do corprates use QSs? even for a 1m job? the government? they have their own QS dept but they are so overwhelmed that they actually outsource QSs from private practice! if there was no value addition, i doubt corprates would hire a QS for their works..
Jamaa wa mjengo