A panel and an electrical service are different parts of the system
The panel distributes electricity to property circuits. The service is the incoming supply and associated equipment. Replacing a panel does not automatically increase the available supply. A Licensed Electrical Contractor should assess existing condition and demand, planned loads and the utility requirements before recommending equipment. Spare breaker spaces alone do not establish capacity.
Prepare the scope for your Brampton property
Explain the current use of the property and list the equipment being added. Distinguish circuits you want to add from an increase in service capacity, since one does not automatically require the other.
Ask how the contractor will establish present and planned demand. Any recommendation should explain the relationship between the panel, incoming service and new loads instead of relying on the number of unused spaces.
What should the assessment establish?
For a Brampton property whose use is changing, have the proposal distinguish the present installation from the intended new loads. A basement renovation may add equipment while also changing who occupies or controls the space. Those property decisions should be clear before the electrical scope is finalized. Request the basis for a capacity recommendation and a list of the connections included. If some proposed loads are still undecided, ask what must be reassessed later. The result should be a defined electrical project rather than an assumed endorsement of every planned use of the building.
Questions before you agree to work
Does every new load need a larger service?
No universal service size applies to every project. The contractor must assess the existing system and proposed demand, and explain whether a service change, another design or no capacity change is appropriate.
Who arranges utility and ESA steps?
Confirm this in the written scope. Service work may need utility coordination as well as ESA notification and review. Ask the contractor what they arrange and what the owner must supply or authorize.