Page 25 - 2018 National Home Improvement

2018 National Home Improvement Estimator, All Rights Reserved Page 18

Area Modification Factors
Construction costs are higher in some cities than in other cities. Add or deduct the percentage shown
on the following pages to adapt the costs in this book to your job site. Adjust your estimated total
project cost by the percentage shown for the appropriate city in this table to find your total estimated
cost. Where a zero is shown it means no modification is required.

These percentages were compiled by comparing the construction cost of buildings in nearly 700
communities throughout the U.S. and Canada. Because these percentages are based on completed
project costs, they consider all construction cost variables, including labor, equipment and material
cost, labor productivity, climate, job conditions and markup.

Modification factors are listed alphabetically by state. Areas within each state are listed by the first
three digits of the postal zip code. For convenience, one representative city is identified in each zip code
or range of zip codes.

The percentages are composites of many costs and will not necessarily be accurate when estimating
the cost of any particular part of a building. But when used to modify costs for an entire structure, they
should improve the accuracy of your estimates.

Total
Wtd.
Location, Zip Material Labor Equip. Avg.

Alabama Average -1 -7 0 -4%
Anniston, 362 -3 -13 -1 -8%
Auburn, 368 -1 -8 0 -4%
Bellamy, 369 -2 13 -1 5%
Birmingham, 350-352 -3 8 -1 2%
Dothan, 363 0 -13 0 -6%
Evergreen, 364 -1 -20 0 -10%
Gadsden, 359 -4 -15 -1 -9%
Huntsville, 358 1 -3 0 0%
Jasper, 355 -2 -16 -1 -8%
Mobile, 365-366 -1 -3 0 -2%
Montgomery, 360-361 -1 -3 0 -2%
Scottsboro, 357 0 -8 0 -4%
Selma, 367 -1 -10 0 -5%
Sheffield, 356 -1 1 0 0%
Tuscaloosa, 354 1 -9 0 -4%

Alaska Average 14 32 5 22%
Anchorage, 995 17 38 6 26%
Fairbanks, 997 16 40 5 27%
Juneau, 998 18 20 6 19%
Ketchikan, 999 3 36 1 18%
King Salmon, 996 16 32 5 23%

Arizona Average 1 -9 0 -4%
Chambers, 865 1 -19 0 -8%
Douglas, 855 0 -18 0 -8%
Flagstaff, 860 2 -17 1 -7%
Kingman, 864 1 -11 0 -5%
Mesa, 852 1 5 0 3%
Phoenix, 850 1 6 0 3%
Prescott, 863 3 -16 1 -6%