Cost statements in an apartment building

Published: 11 May 2026
Reviewed by: the Practic d.o.o. expert team

A monthly statement is not just a list of amounts. Every item needs an invoice or other basis and an appropriate allocation key. If either is missing, the owner cannot check the amount effectively.

What makes up the monthly charge?

The statement may include supplier costs, management services, maintenance, insurance, the reserve fund contribution and other obligations of the building. The manager must record the invoices received and divide the costs in line with the applicable rules and agreements.

The most common allocation keys

By floor area or co-ownership share

This is used for costs related to ownership or certain common parts, where the legal basis requires it.

By number of occupants

Some operating costs are divided by the registered number of people. That is why occupant data must be updated in time.

By actual consumption

Where proper metering exists, part of the costs is divided on the basis of meter readings. Special rules apply to heating, so the raw reading is not necessarily the final billing share.

Per unit

Some services are divided equally among units if there is an appropriate basis for this.

How to check an individual item?

Check the supplier's name, the billing period, the total invoice amount, the key used, your share and any adjustments. If it is a corrected invoice, it must be clear which document was actually included in the statement.

What to do if something is unclear?

Make your question specific: give the month, the item and the explanation you need. A general claim that the bill is too high does not allow a quick check. A transparent manager must give access to the basis and explain the key used.

Why correct data matter

Changes of ownership, number of occupants or meter data can affect the statement. Owners must report changes in time, and the manager must process them traceably.

Practic gives owners clear statements and access to the documents. See how we work.