Cost Home Addition Calculator

Formatting only. This does not change the calculation.
Applied to the marked-up total. Enter 0 if you are not carrying one.
If you already have a direct cost figure, enter it here and the build-up below is skipped.
Work removed from the scope, e.g. on a deductive change order.
Taken on direct cost.
Taken on direct cost plus overhead.
Total with contingency
110,000.00
Construction Cost Calculator
Materials with waste and tax
0.00
Labour
0.00
Direct cost
100,000.00
Overhead
0.00
Profit
0.00
Cost before contingency
100,000.00
Contingency amount
10,000.00
Total per square foot
275.00
Worked out from AACE International Recommended Practice 10S-90, Cost Engineering Terminology (definitions of direct cost, indirect cost, overhead, profit and contingency) and 2 other sources.
This is an estimate built from the rates you entered, not a quote and not a bid. Real project costs depend on scope, site conditions, local labour markets, permits and what is found once demolition starts. Get written quotes before committing.

How this is worked out

2 steps
  1. Direct cost = 100000
  2. Contingency = 100000 x 10 / 100 = 10000; total = 100000 + 10000 = 110000

Results are general information, not financial, tax, legal, medical or engineering advice.