Architectural Fee based on Percentage of Construction Fee
To get quick sense how much hiring an architectural & engineering firm (A&E) costs, it is best to calculated A&E fee based on percentage of construction cost.
Construction cost for residential projects vary from 250$/sqft (dollar per square feet) to 350$/sqft for simple flat site or renovation project to 350$/sqft to 400$/sqft for hillside depending on complexity of foundation and number of piles or caisson. (Sometimes the construction cost is much more expensive for very steep hill with expansive soil) The reason for the range in construction cost (250$/sqft to 350$/sqft) is level of the finishes and construction means and methods. Clients sometimes want to spend more or less on their construction, but I always recommend to see where the building is located and based on the market value of the surrounding buildings spend more or less on materials of the exterior or the interior of the building. By considering the market value of the surrounding area, you have the option to sell your building quickly with the right price, otherwise you are risking selling your building in much more longer period of time, or selling your building in a lower price.