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Dividing a larger commercial unit: clear for the new layouts, not just the new wall

A landlord dividing a commercial premises needs more than space for a new separating wall. The future units may need different room arrangements, entrances and building-service provisions. The demolition contribution is the defined removal of old interiors that obstruct the reviewed layouts.

SiteClear planning resources / Reviewed 11 October 2026

SiteClear provides commercial strip-outs and selective demolition. Begin with the existing premises and both proposed units shown together, including the elements intended to remain.

Compare three levels of removal

Clear the new boundary area. Some existing fit-out may remain useful on either side, with selected removals where the new separation and associated work will be built.

Reconfigure selected rooms in each unit. The project may retain support spaces while changing reception, work areas or circulation. Each future unit has its own removal boundary and receiving condition.

Reset the wider interior. More of the old fit-out leaves to suit the incoming plans. Retained building elements and relevant systems still need to be identified; “two empty units” is not a complete scope description.

The design team and relevant authority determine the requirements of the proposed division. Demolition does not establish the design, fire separation, occupancy or service arrangements of the new units.

Trace existing fit-out across the proposed line

Old ceilings, flooring, counters and service routes may continue through the area being divided. The responsible professionals identify what changes and what stays. Use those decisions to define ordinary removals and their edges.

Landlord consent, building instructions and municipal decisions have different roles. The approvals relationship guide explains that distinction. Keep the actual project decisions with the removal information rather than treating a landlord instruction as every approval required.

Give each future unit a receiving condition

Ask the fit-out team to identify what is needed at exposed floors, retained walls and ceiling edges. New separations, altered systems, repairs and finishes are separate construction tasks unless included in an accepted contract.

If the proposed layouts change, update the affected removal information. SiteClear’s revised-drawing guide addresses that coordination step. The physical comparison still needs to be made against both future units, not only the changed wall line.

Joining units produces a different endpoint

A tenant expanding into the neighbouring unit may retain most existing rooms and introduce a reviewed connection instead. In that case, define the opening and the adjoining interiors affected on both sides. It is not the reverse of every division project, because the retained layouts and building requirements can differ.

Illustrative example: retain two useful support areas

This is an illustrative planning example, not a completed SiteClear project.

A landlord proposes two units from one larger office. Useful support rooms sit on opposite sides of the new layout and are intended to remain. Selected reception joinery, partitions and ceiling areas obstruct the new arrangement.

The removal package identifies those elements and the retained rooms. The next contractors build the designed separation and complete each fit-out. The handover is a defined starting condition for that work, rather than a claim that demolition alone creates two finished premises.

Discuss both proposed units with SiteClear

Request an assessment with the current plan, proposed layouts and authorised property contact. Identify retained rooms, the design review status and the contractors receiving the space after removal.

From planning to a written scope

Discuss your removal package

Tell us the property, the intended change and what needs to remain. SiteClear serves Toronto, the GTA and surrounding Southern Ontario. The assessment defines the accepted work and its handover.

Request a SiteClear estimate

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