Building Costs Per Square Foot in the United States of America (USA) and Canada – Single Family Homes

Building Costs Per Square Foot in the United States of America (USA) and Canada

New French style mansion with 5 bedrooms and 7 bathrooms under construction and nearing completion. Located on 375 Fordyce Rd, Los Angeles, CA 90049 in USA – Price $30 million – Source: Realtor

The building costs per square foot in the United States of America (USA) depend on many factors. First, you have to keep in mind that building projects have their own unique aspects, thus if somebody in your neighbourhood built a house for $90,000, that doesn’t mean your newly built house will also cost the same amount. Environmental conditions such as the ground conditions [soil type], terrain, access to site, weather, zoning requirements as well as the location and availability of services such as site drainage, water supply reticulation and electrification requirements will affect the cost of building your residential home or commercial property before we factor in costs such as the local construction index which includes the cost of labour and materials.


List of 50 US States – Percentage Deviation of the Regional Building Cost from the National Average ($X), in Ascending Order:

There are 50 states in the USA and the construction cost per square foot in each region will vary by a certain amount. Considering that ground conditions are normal, the regional building cost per square foot based on the local construction index, roughly follows the formula below. Please note that this is just a guideline.

If $X is the Average National Building Cost in the USA, then it will cost the following to build a residential or commercial property in each state:

National Average = $X

  1. Idaho                   -9% (9% less than X)
  2. Nebraska             -8% (8% less than X)
  3. New Mexico      -8% (8% less than X)
  4. Arkansas              -7% (7% less than X)
  5. Mississippi          -6% (6% less than X)
  6. South Dakota     -6% (6% less than X)
  7. Florida  -5% (5% less than X)
  8. Maine   -5% (5% less than X)
  9. Oklahoma           -5% (5% less than X)
  10. Vermont              -5% (5% less than X)
  11. West Virginia     -5% (5% less than X)
  12. Alabama              -4% (4% less than X)
  13. Arizona                 -4% (4% less than X)
  14. Georgia                                -4% (4% less than X)
  15. Kentucky             -4% (4% less than X)
  16. North Carolina   -4% (4% less than X)
  17. Virginia                 -4% (4% less than X)
  18. Indiana                 -3% (3% less than X)
  19. Iowa      -3% (5% less than X)
  20. Missouri               -3% (3% less than X)
  21. Montana             -3% (3% less than X)
  22. Oregon                 -3% (3% less than X)
  23. Utah      -3% (3% less than X)
  24. Tennessee          -2% (2% less than X)
  25. Minnesota          -1% (1% less than X)
  26. New Hampshire                               -1% (1% less than X)
  27. Pennsylvania     -1% (1% less than X)
  28. South Carolina   -1% (1% less than X)
  29. Wyoming             -1% (1% less than X)
  30. Kansas  – X
  31. Ohio – X
  32. Washington – X
  33. Wisconsin – X
  34. Colorado              1% (1% more than X)
  35. Michigan              1% (1% more than X)
  36. Nevada                                1% (1% more than X)
  37. Delaware             2% (1% more than X)
  38. Louisiana             2% (2% more than X)
  39. Maryland             2% (2% more than X)
  40. Illinois   4% (4% more than X)
  41. North Dakota     4% (4% more than X)
  42. Rhode Island      5% (5% more than X)
  43. Texas    5% (5% more than X)
  44. New York            6% (6% more than X)
  45. Connecticut        8% (8% more than X)
  46. California             9% (9% more than X)
  47. New Jersey        9% (9% more than X)
  48. District of Columbia         12% (12% more than X)
  49. Massachusetts  12% (12% more than X)
  50. Hawaii   20% (20% more than X)
  51. Alaska   23% (23% more than X)

Deviation of the State Regional Building Cost per Square Foot from the National Average – USA – Ascending Order

As you can see from Graphs and Regional Cost List, Alaska is the most expensive state to build in the USA, followed by Hawaii costing 23% and 20% more than the national average to undertake a construction project.

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