Contract Management c3m
Contract Management
c3m in Detail
Automated utility billing and cost distribution – transparent, efficient and legally compliant.
The c3m billing process
In four steps from the property structure to the finished utility bill.
Model the property
Capture and link rental units, areas, meters and tenants in a digital map of the property.
Capture & assign costs
Energy costs (e3m) and operating costs (a3m) are automatically assigned to the relevant cost centers.
Configure keys & contracts
For each cost type, the appropriate distribution key is defined — fixed or consumption-based, depending on the rental contract.
Create & send the bill
Utility bills are generated automatically, prepared in the customer's design and sent out.
Structure, tenants & contracts
Object hierarchy in c3m
Arbitrarily deep hierarchy — from a single meter to the entire portfolio.
Master data: tenants & contracts
Rental contract
- Start & end of tenancy (to the day)
- Rental area & rental unit
- Contractual cost items
- Payment terms & advance payments
Rental unit
- Type of use (residential, commercial, storage …)
- Assigned meters & data points
- Area data for distribution keys
Tenant
- Contact details & communication channel
- Language & invoice format
- Multi-tenant capable (changing tenants)
Special cases
- Vacancy: costs borne by the owner
- Mixed-use units (residential + commercial)
- Time-variable distribution keys
Distribution keys & cost types
c3m supports any number of cost types, each with its own distribution key — fixed or dynamic, configurable per rental unit.
Area (m²)
Costs are distributed proportionally to the rental area. Standard key for consumption-independent items such as common electricity, cleaning, insurance.
Consumption (metered)
Each tenant pays according to their actual consumption — ideal for electricity, water, heat. Direct connection to e3m meter data.
Number of persons
Costs are split by the number of residents or users — suitable for waste, water where no meter is available.
Fixed shares (%)
Predefined percentage shares per rental unit — for special cases and contractually agreed splits.
Typical cost types in c3m (selection)
Energy
- Electricity (peak/off-peak)
- Heat / district heating
- Gas / oil
- Water / wastewater
Operations
- Building cleaning
- Caretaker
- Common electricity
- Lift / elevator
Building
- Building insurance
- Property tax
- Waste disposal
- Garden maintenance
Other
- Parking spaces
- TV / antenna
- Administration costs
- Reserves / provisions