Features & tools
How to manage coefficients in thousandths tables
Coefficients are the factors that correct a unit's surface or base value before it becomes thousandths (millesimi), to account for floor level, exposure, intended use or distance from the system. They make the table fair: two apartments of equal floor area but with different features do not carry the same weight. In the software, coefficients are set at the unit and table level, so the calculation stays traceable and repeatable. This guide explains which coefficients exist, how to enter them without touching the values approved by the owners' meeting, and how to verify that the sum of thousandths stays consistent.
What coefficients are and what they do
A coefficient is a multiplier applied to a unit's base quantity, typically the surface, to reflect conditions that raise or lower its value or usefulness. Floor, orientation, brightness and intended-use coefficients are the ones traditionally used when forming the general thousandths tables.
In some special tables the coefficients weight use rather than value. In the staircase table, for example, allocation accounts for floor height under Article 1124 of the Italian Civil Code, while for heating there are factors tied to heat loss. The coefficient is therefore the tool through which the table translates a physical feature into an allocation weight.
- Floor and height coefficient
- Orientation and exposure coefficient
- Intended-use coefficient
- Aspect or brightness coefficient
Where to set them in the software
In the software, coefficients are recorded on the individual unit, where base surface and correction factors coexist, or at the table level when the factor applies to all units of a category. Keeping the raw figure, for example square metres, separate from the coefficients lets you reconstruct at any time how the final thousandth was reached.
It is good practice not to type the corrected thousandth directly, but to enter surface and coefficients and let the software compute the product. This way, if a value changes, recalculation is automatic and no inconsistent numbers remain between the declared surface and the thousandth shown in the table.
Respecting the approved table
The thousandths in force are those approved by the owners' meeting or attached to the regulation, and they are not changed by simply tweaking the coefficients. If the table already exists, the coefficients in the software document its logic and manage any revisions, they do not change its values without a valid resolution.
The revision or rectification of thousandths is governed by Article 69 of the implementing provisions of the Italian Civil Code, which sets out the cases in which values may be corrected even by majority. Until a new approval intervenes, the recorded coefficients must reproduce the current table exactly, so the allocation stays legitimate.
Verifying the consistency of the calculation
After setting the coefficients, the key check is that the sum of thousandths in each table gives the expected total, as a rule one thousand for general tables. Even a tiny discrepancy signals a rounding to fix or a coefficient entered on the wrong unit.
With AmministraPro you can keep surface, coefficients and resulting thousandths separate, recalculate the table when a figure changes, and preserve the approved version for allocation. The table management features are described on the /funzioni page, while the plans suited to your firm's size are on the /prezzi page.
Frequently asked questions
Can I change coefficients without a resolution?
No, if the change alters the thousandths in force. Values approved by the meeting or attached to the regulation remain valid until a new approval or a rectification under Article 69 of the implementing provisions intervenes. In the software coefficients can document the table's logic, but they do not replace the resolution.
Should I enter the computed thousandth or surface and coefficients?
It is preferable to enter the base surface and the coefficients and let the software compute the thousandth. This way the value is reconstructible and, if a figure changes, recalculation is automatic. Typing the final thousandth directly hides the logic and makes errors easier.
Are coefficients the same across all tables?
No. Each table has its own factors: the general one uses floor, exposure and intended use, the staircase table considers floor height under Article 1124 of the Italian Civil Code, heating weights heat loss. The same apartment can therefore have different coefficients in different tables.
How do I check that the coefficients are correct?
The main check is the sum of thousandths in each table, which must give the expected total, as a rule one thousand for general tables. If the total does not add up, there is a rounding to fix or a coefficient applied to the wrong unit. The software flags the discrepancy before use.
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