Skip to main content
Calcimator

WDI Report Generator Calculator

Score a wood-destroying insect inspection by findings across NPMA-33 report sections — live insects, mud tubes, exit holes, frass, damage, and conducive conditions.

Inputs

Results

Severity rating (0-100)

0

Recommendation (0=Clear, 3=Active)

0

Total estimated cost ($)

$0.00

Total findings0
Evidence score0
Conducive conditions score0
Finding categories affected0
Estimated treatment cost ($)$0.00
Estimated repair cost ($)$0.00
How to Use This Calculator
  1. Enter the inspection date, inspector license number, and property address.
  2. Check off all areas inspected and indicate any evidence of wood-destroying insects found.
  3. Input the location and extent of visible damage for each finding.
  4. Review the generated WDI Report fields and verify they meet your state report form requirements.
  5. Note that WDI reports reflect conditions at the time of inspection only and do not guarantee future infestation.

What each input means

Live insects found
Count of locations with live termites, beetles, or carpenter ants.
Mud tubes found
Number of subterranean termite shelter tubes on foundation/walls.
Exit/kick-out holes
Drywood termite or beetle exit holes in wood members.
Frass deposits
Locations with sawdust-like frass from boring insects.
Damaged structural members
Count of joists, studs, sills, or other members with visible damage.
Wood-soil contact points
Locations where wood directly contacts soil (conducive condition).
Moisture problem areas
Areas with standing water, plumbing leaks, or excessive moisture.
Cellulose debris in crawl (0=No, 1=Yes)
Wood scraps, cardboard, or form boards left in crawl space.

What each result means

Severity rating (0-100)
Weighted severity score. Higher = more urgent action needed.
Recommendation (0=Clear, 3=Active)
0 = Clear, 1 = Conducive conditions, 2 = Evidence found, 3 = Active infestation.
Total findings
Sum of all evidence and conducive condition findings.
Evidence score
Weighted score from insect evidence findings.
Conducive conditions score
Weighted score from conditions favorable to pests.
Finding categories affected
Number of different evidence types present.
Estimated treatment cost ($)
Approximate treatment cost based on severity.
Estimated repair cost ($)
Approximate structural repair cost for damaged members.
Total estimated cost ($)
Combined treatment and repair cost estimate.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Live insects found = 0, Mud tubes found = 0, Exit/kick-out holes = 0, Frass deposits = 0 = 8 input(s) provided
  2. Calculate Severity rating
    Severity rating = min(100, totalScore)
    0 = 0
  3. Calculate Recommendation
    Recommendation
    0 = 0
  4. Calculate Total estimated cost
    Total estimated cost = round((estimatedTreatmentCost + estimatedRepairCost) * 100) / 100
    0 = $0
  5. Calculate Total findings
    Total findings = liveInsects + mudTubes + exitHoles + frassDeposits
    0 = 0
  6. Calculate Evidence score
    Evidence score = liveInsects * liveInsectWeight
    0 = 0

The questions that sit next to this one — chosen by subject, including calculators filed under a different category.

More in Home, Garden & Maintenance.