Skip to content
ENExplore Calculators

Structural Audit Cost Calculator

Work out structural audit cost instantly with clear inputs, formula shown and shareable results.

About Structural Audit Cost Calculator

A structural audit combines visual inspection charged by area with non-destructive testing priced as a lump sum: rebound hammer, ultrasonic pulse velocity, cover meter, carbonation and chloride sampling. The certification report is charged as a percentage of the field work. Audits are mandatory at defined building ages in many jurisdictions.

Formula

Audit cost

Total = (area x audit rate + testing lump sum) x (1 + report fee percentage)

Worked example

With the default values below, Structural Audit Cost Calculator returns Total structural audit cost of $385,000.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Built-up areaminimum 0.1 m²
8,000 m²
Audit rateminimum 0 per m²
25 per m²
Non-destructive testingminimum 0
150,000
Report and certification feeaccepts 0–30 %
10 %

Results

Total structural audit cost
$385,000.00
Area based inspection fee
$200,000.00
Testing cost
$150,000.00
Report and certification fee
$35,000.00

Step by step

  1. 1Values used
  2. 2Audit cost
  3. 3Total structural audit cost= 385,000.00
  4. 4Area based inspection fee= 200,000.00
  5. 5Testing cost= 150,000.00
  6. 6Report and certification fee= 35,000.00

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Preliminary estimate only. Structural audits must be carried out by a licensed structural engineer to the scope prescribed by the local authority.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Preliminary estimate only. Structural audits must be carried out by a licensed structural engineer to the scope prescribed by the local authority.

Frequently Asked Questions

How is the Structural Audit Cost figure worked out?

Total = (area x audit rate + testing lump sum) x (1 + report fee percentage). A structural audit combines visual inspection charged by area with non-destructive testing priced as a lump sum: rebound hammer, ultrasonic pulse velocity, cover meter, carbonation and chloride sampling.

When is a structural audit required?

Commonly at fifteen and thirty years of building age, and then at shorter intervals, but the trigger varies. It is also prudent before purchase of an older building or after any structural distress.

What values do I need to enter?

This calculator takes 4 inputs: Built-up area, Audit rate, Non-destructive testing, Report and certification fee. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.

Related Calculators

Structural Audit Cost Calculator | Calcrivo