Weighted Average Lease Term Calculator
Rent weighted average independently applicable remaining lease years terms, WALT. Break/exercise/expirydefinition externally resolved; not future expectedrenewals.
Description
WALT is a weighted average of remaining lease terms.
WALT is a weighted average of remaining lease terms.1
Rent weights and the applicable expiry or break convention determine the result. The calculation and input requirements are explained below.
When to use Weighted Average Lease Term Calculator
Enter nonempty aligned nonnegative remaining lease years and rent weights with positive total weight.
How to use Weighted Average Lease Term Calculator and how it works
- Prepare the measurements or independently established model inputs described below, with matching units and observation scope.
- Enter the required fields and run Weighted Average Lease Term Calculator.
- Read the result fields using the formula, output units, signs and ordering explained below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualIndependentlyApplicableRemainingLeaseTermsYears | Actual Independently Applicable Remaining Lease Terms Years. Use the units and matching context stated in the calculation below. | array of number | Required; other constraints below |
| actualLeaseRentWeights | Actual Lease Rent Weights. Use the units and matching context stated in the calculation below. | array of number | Required; other constraints below |
Enter nonempty aligned nonnegative remaining lease years and rent weights with positive total weight. Return the weighted mean in years. Break dates and applicable lease terms must already be resolved.
waltYears=sum(remainingYears*rentWeight)/sum(rentWeights) Apply the input ordering, units and branch conditions stated above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the calculated or selected fields below. | object |
| result.value | Numeric result under the formula and output units explained above. | number |
{
"input": {
"actualIndependentlyApplicableRemainingLeaseTermsYears": [
1,
3
],
"actualLeaseRentWeights": [
1,
1
]
},
"output": {
"result": {
"value": 2
}
}
}Limitations and assumptions
The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.
All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.
Alternative or Complementary methods
Use Lease Rollover Exposure Calculator for a complementary operation: Lease rollover exposure weights upcoming expiries by rent.
Use Lease Renewal Probability Calculator for a complementary operation: An empirical renewal fraction summarizes eligible observed lease outcomes.
References
-
Weighted Average Lease Term Calculator — tool.io
Similar or alternative tools
- Lease Rollover Exposure Calculator
Lease rollover exposure weights upcoming expiries by rent.
- Lease Renewal Probability Calculator
An empirical renewal fraction summarizes eligible observed lease outcomes.