Lighting a Condo With a Concrete Ceiling: Five Options That Leave the Concrete Uncut

Why a concrete ceiling is structure

Where a condo's ceiling is a concrete slab, the same slab is the floor of the unit above. Section 68(1) of the Strata Property Act puts the boundary between the two units midway through the structural part of that ceiling, unless the strata plan shows another line. The lower half is inside your unit and the upper half is inside your neighbour's.

The slab is also part of the building's structure. Standard Bylaw 5(1)(a) requires the strata's written approval before an owner makes an alteration that involves the structure of a building. A groove cut for a cable, or a hollow cut for a light, is an alteration of that kind. We treat a concrete ceiling as structure until the building's drawings say otherwise.

Wires inside the slab belong to the building. Section 1 of the Act defines common property to include wires and cables for electricity that are located within a ceiling that forms a boundary between two units. If the wire that feeds your existing ceiling light runs inside the concrete, that length of it is common property, and Standard Bylaw 6 requires written approval to alter common property.

Drilling raises the same questions as cutting. A fixture fixed to a concrete ceiling hangs from anchors drilled into the slab, so we name the anchors in the request to the strata. BC's Occupational Health and Safety Regulation lists using power tools to cut, grind or drill concrete as a silica process (section 6.110), and section 6.112(2) requires a risk assessment by a qualified person before workers do work that may expose them to the dust.

Five options that leave the concrete uncut

Each option in the table brings light to a new place while the slab stays whole.

A lowered ceiling section is a frame covered with drywall and fixed below the concrete over part of a room, such as a hallway or a kitchen. It gives a space for cable and for lights set into the new surface. It also brings the ceiling down over that area, so we mark its edges on the walls for you to see before anything is built.

Under the Standard Bylaws, replacing an original attached light fixture needs the strata's written approval, because section 9.1(1) of the Strata Property Regulation counts electrical fixtures as fixtures and Bylaw 5(1)(g) covers the fixtures the developer installed. A lamp that plugs in is attached to nothing and falls outside that definition.

Have the ceiling coating tested first

Section 20.112 of the Occupational Health and Safety Regulation requires the employers responsible for a renovation, and the owner, to ensure that a qualified person inspects for hazardous materials before the work begins. WorkSafeBC lists textured ceiling coat among the building materials that often contained asbestos, and says a home built before 1990 is likely to contain some asbestos.

The ceiling's coating is sampled before anyone scrapes it, drills through it or fixes a frame to it.

Sprinkler heads and smoke alarms stay where they are

If your unit has fire sprinkler heads or a smoke alarm on the ceiling, treat each one as a fixed point of the lighting plan. We move, cover, paint or enclose one of them only with the building's written approval.

These parts can belong to the building. The Act's definition of common property includes a pipe for water inside a unit when it is capable of being used, and intended to be used, by another unit or the common property. We read a sprinkler pipe that serves more than one unit as meeting that test. The Strata Property Regulation names fire protection among the building's systems that a depreciation report must describe (section 6.2). Ask the strata in writing whether the alarm in your unit is connected to the building's fire alarm system, and who is allowed to work on it.

We state no building code rule about sprinklers or alarms on this page. The Province of BC says: "BC Codes don't apply in the City of Vancouver which has its own building bylaw." The City's website refused our automated requests on October 4, 2026, so we could read none of its pages. If a lowered ceiling section would stand near a sprinkler head, our request to the strata shows that head, and any change to it is made by the company the strata names.

Electrical permits and the licensed contractor

Technical Safety BC, the body that runs BC's Safety Standards Act, lists "replacing light fixtures or ceiling fans" and "installing or moving light switches or electrical outlets" among the work that needs an electrical permit. It states that owners of a strata "cannot obtain homeowner permits and must hire a licensed contractor", and that the contractor applies for the permit on the owner's behalf.

Those are Technical Safety BC's rules for its own area. The City of Vancouver is one of 10 municipalities that issue their own electrical permits, so the permit for a Vancouver condo comes from the City. Ask the electrical contractor to show you the permit before the work starts.

The building's electrical capacity

The Province of BC's page on electrical planning reports says almost all strata corporations have finite electrical capacity. It adds that when an owner wants to add equipment that will increase the electrical demand, the strata needs to ensure a qualified professional selects the equipment and confirms the electrical capacity.

For a lighting plan, we give the electrical contractor a list of every new fixture and the power it draws, taken from the maker's product sheet. The contractor checks the list against what the unit's electrical panel can supply, and we put the contractor's written answer in the strata request.

How we plan lighting under concrete

We start from what exists. Each electrical box in the ceiling, each switch and each outlet goes on the plan first. Then we place new light where one of the five options can reach. Where no option can reach a place without cutting concrete, we tell you so and show the nearest alternative.

Before a lowered ceiling section is closed, we photograph the cables and boxes inside it for your file.