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Calcimator

Infrastructure Cost Calculator

Estimate roads, water, sewer, and utility infrastructure costs per lot for land development.

Inputs

LF
$/LF
$/lot
$/lot
$/lot
$/lot
$/lot

Results

Total Infrastructure Cost

$1,670,000.00

≈ 4 average U.S. homes

Total Cost per Lot

$41,750.00

≈ 4 years of state college

Road Cost$750,000.00
Water Cost$240,000.00
Sewer Cost$280,000.00
Storm Drain Cost$160,000.00
Electric/Gas Cost$140,000.00
Sidewalk & Curb Cost$100,000.00
Road Per Lot18,750
How to Use This Calculator
  1. Enter Total Lots and Road Length in linear feet for the project.
  2. Set Road Cost per linear foot based on local contractor quotes or regional benchmarks.
  3. Enter per-lot costs for Water, Sewer, Storm Drain, Electric/Gas, and Sidewalk/Curb.
  4. Review Total Infrastructure Cost and Cost per Lot.
  5. Include these costs in your land residual value calculation alongside soft costs and contingency.
  6. Request competitive bids from civil contractors to refine these estimates before closing on land.

How the result changes with Total Lots

Total LotsTotal Infrastructure CostTotal Cost per Lot
501$12,273,000.00$24,497.01
1,751$41,023,000.00$23,428.33
3,250$75,500,000.00$23,230.77
4,500$104,250,000.00$23,166.67

What each input means

Total Lots
Total number of lots in the development.
Road Length
Total linear feet of road to construct.
Road Cost
Cost per linear foot for road construction (including subgrade).
Water per Lot
Water main and connection cost per lot.
Sewer per Lot
Sanitary sewer and connection cost per lot.
Storm Drain per Lot
Storm drainage cost per lot.
Electric/Gas per Lot
Electric and gas utility extension cost per lot.
Sidewalk & Curb per Lot
Sidewalk, curb, and gutter cost per lot.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Lots = 40, Road Length = 3000, Road Cost = 250, Water per Lot = 6000 = 8 input(s) provided
  2. Calculate Total Infrastructure Cost
    Total Infrastructure Cost
    1670000 = $1,670,000
  3. Calculate Total Cost per Lot
    Total Cost per Lot
    41750 = $41,750
  4. Calculate Road Cost
    Road Cost
    750000 = $750,000
  5. Calculate Water Cost
    Water Cost
    240000 = $240,000

Engine last updated . Checked against 1 independently-derived test — how we verify calculators.

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