Hi, I am planning to re-erect a 2.5 stories with basement semi-detached house (tearing down the current single story building) on a 3500 sq feet plot and would like to seek advise the estimated cost for Architect, M&E, C&S and QS?

If you've not hired/appointed an architect, go and do this first.

After appointing the architect, the architect can help you source and appoint the other consultants.

10 hours ago, Terry Chen said:

Hi, I am planning to re-erect a 2.5 stories with basement semi-detached house (tearing down the current single story building) on a 3500 sq feet plot and would like to seek advise the estimated cost for Architect, M&E, C&S and QS?

Cost for Architect can differ a lot - think award winning Starchitect versus your just start up Architect.

Realistically, you can expect probably expect around 4% to 9% of your total construction costs - $100k - $250k. It also depends on how fancy a design you are expecting, whether you happy with simpler house or you need an award winning design haha.

Yes snooze is right - go find an Architect first and he can advise in more detail how much the other consultants might cost based on your requirements.

Generally, if you are building semi-d or terrace, M&E Consultant is unnecessary as the Licensed Electrician, Licensed Plumber / Gas, Air con sub contractor can double up for authoritirs' submission requirement M&E Consultant is generally needed for large Commercial job like shopping complex Government Building where M&E is more complicated.

Strongly advice in your case for Semi D, spend money on Professional Engineer is more than enough. The PE should be able to get an Architect (ie: minimised fees) to endorse for Authorities' submission. The layout you can give input of your requirements to the PE or interior designer. This way you save a lot on consultant fees & all your budget is properly used (ie: no wastage, everyone actually does work for the money paid).

Unless you are budgeting anywhere exceeding 2 million for your job (which I doubt so) then go for the full team of consultants. The QS & M&E will be laughing all the way to their bank.... (Easy money for them)