Typically home buyers and/or their real estate agents refer to the price per square foot. Keep in mind that this is only a gauge when referring to construction costs of building your new home. Below are several significant factors that can affect the construction price to of your designed or selected home to vary from the standard $x/sf.
Lot & Elevation
Lot selection can sway the construction costs of a home from $1/sf to as much as $10/sf+ due to factors including: the amount of clearing required, amount of fill dirt needed onsite, amount of slope side to side and front to back of the building area, and last, the preferred elevation above existing grade someone wants their home to be. Crawl space construction is also considered on a lot by lot basis. Typically crawl space construction is more expensive except for home sites with over 4' of fall or homes elevated over an average of 4', where in this case, it can be cheaper than a raised slab.
Architectural Elements
The design of a home consists of many different factors that directly affect costs. The most significant being roof pitch, number of exterior corners (more particularly jogs or breaks in perimeter), gables, dormers, doors, windows, and columns. Tray and vaulted ceilings are also more costly.
Total Square Footage
Perhaps the most overlooked and costly factor in construction costs, at least when referring to a price/sq, is the amount of non-heated & cooled space. This includes garages, storage rooms, and porches.
Kitchen & Bathrooms
As most people know, these areas of the home account for a chunk of the budget. With that in mind, the larger and more elaborate these rooms are, the more expensive the home will be. Also, in simple, a 3 bathroom 2000sf home, will costs more per square foot than a 2 bathroom 2000sf home.
In summary, don't get discouraged because we know all of the above "additional costs" are in demand. We budget fair amounts for our homes and typically, can help design around your budget, without sacrificing a bigger back porch or needed 3rd bathroom.