Description
Calculate allocated lettable area and its assigned common-area share.
Property bookkeeping distinguishes scheduled and collected rent, concessions, assigned common area, fee bases and calendar boundaries. A decimal index change differs from a percentage-number input, and a rent-free period needs explicit start/end conventions. Supplied scenarios do not establish market value, lawful charges, possession or enforceable lease terms.
Calculate allocated lettable area and its assigned common-area share.
When to use this tool
Use Lettable Room Common Area Share when you already have roomExclusiveArea, assignedCommonArea and need to calculate allocated lettable area and its assigned common-area share.
How to use the tool and how it works
- Enter roomExclusiveArea, assignedCommonArea. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read allocatedLettableArea, commonShare. Use the output convention below.
Require nonnegative exclusive/common areas and positive sum; return their sum and common/sum.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| roomExclusiveArea | Room Exclusive Area | Required. Finite number; minimum 0. |
| assignedCommonArea | Assigned Common Area | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| allocatedLettableArea | Allocated Lettable Area | Required. Finite number. |
| commonShare | Assigned common area/(exclusive+common area), not common/exclusive area. | Required. Finite number. |
{
"input": {
"roomExclusiveArea": 80,
"assignedCommonArea": 20
},
"output": {
"allocatedLettableArea": 100,
"commonShare": 0.2
}
}Limitations and assumptions
- Assigned common area is a caller assumption; this does not establish a legal lettable-area method or allocation entitlement.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Review the lease, transaction records and stated area-measurement method for actual charges and allocations. Use a complete cash-flow or closing statement when assessing net proceeds; supplied credits, caps and fee terms are scenario components.
References
Similar or alternative tools
- Property Measured Advertised Area Gap
Measure a property's signed measured-versus-advertised area gap.
- Lease Tenant Incentive Credit
Subtract a supplied tenant incentive credit from gross rent.