DMC Builder's Field Notes
Why Price Per Square Foot Fails as the First Custom-Home Question
Price per square foot can describe a completed budget. It cannot reliably create one before the site, design, scope, systems, and selections are defined.
Homeowners understandably want one number that makes an early plan feel measurable. The problem is that two houses with the same heated square footage can require very different sites, structures, roof systems, exterior envelopes, mechanical systems, interior selections, and levels of coordination. Dividing an unknown total by square footage does not make the total known.
Heated square footage does not describe everything being built
Garages, porches, decks, exterior kitchens, tall walls, attic spaces, storage, retaining walls, driveways, walks, and site improvements cost money without appearing in the heated-area number.
A compact two-story home and a long one-story home can contain the same heated area while carrying very different foundation, roof, exterior-wall, and site costs.
The site budget does not shrink when the floor plan does
Surveying, design, permitting, mobilization, utility connections, driveway access, clearing, erosion control, grading, drainage, and septic or sewer work are driven by the property and project—not simply by the size of the conditioned space.
On a difficult site, reducing the house by a few hundred square feet may leave most of those costs unchanged.
Shape and structure matter
Corners, offsets, valleys, dormers, long spans, large openings, specialty beams, cantilevers, tall ceilings, complex stairs, and masonry features affect labor, material, engineering, sequencing, and risk.
A simple plan uses the same square feet more efficiently than a complicated plan. That is not a judgment about style; it is a construction fact that should be visible in the budget.
Selections can move the total quickly
Windows, doors, cabinetry, appliances, plumbing fixtures, lighting, flooring, tile, countertops, trim, hardware, exterior materials, and mechanical systems are not minor decorations added after the price is established. They are part of the project definition.
Allowances that are too vague or too low do not make a project affordable. They postpone the disagreement until the owner has fewer choices.
Use cost per square foot as a result, not a promise
Once the land, plans, structural approach, specifications, major selections, sitework, allowances, schedule, and responsibilities are defined, the projected total can be divided by the chosen area for comparison.
At that point the number has context. Before that point, it is usually a sales answer pretending to be a construction budget.
The bottom line
The right first question is not, ‘What do you charge per square foot?’ It is, ‘What information must be defined before this home and this site can be priced honestly?’ That is the purpose of paid preconstruction.
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