Who pays for balcony waterproofing in BC — the strata or the owner?
This is one of the most common disputes in BC strata buildings: a balcony membrane fails, the suite below gets wet, and suddenly the strata council and the upstairs owner are pointing at each other. The legal answer is clear — and it almost always points to the strata corporation.
The legal basis: Section 72 of the BC Strata Property Act
Section 72 of the BC Strata Property Act states that the strata corporation must repair and maintain common property and common assets. The duty is mandatory — it is not discretionary, and it cannot be waived by informal agreement between the council and owners.
In BC strata buildings, balcony structural elements — including the concrete slab, the waterproofing membrane protecting that slab, and the perimeter flashings — are almost always classified as common property or limited common property in the registered strata plan. That classification is what determines who pays.
What is classified as an owner's unit? The interior of the suite — typically the air space inside the unit boundary walls — plus any fixtures specifically assigned to the owner by the strata plan. The balcony structural deck and its protective membrane sit outside that boundary. They are the building's structure, not the owner's interior space.
What is common property on a balcony
Regardless of whether the strata plan designates the balcony as common property or limited common property, these elements are almost always the strata's maintenance responsibility:
- The structural concrete slab (the balcony deck itself)
- The waterproofing membrane that protects that slab
- Railing posts and guardrails (structural components)
- The door threshold flashing that transitions the membrane to the suite door
- Any drainage system or floor drain set into the slab
What owners are responsible for
Owners are responsible for their personal property and the maintenance explicitly assigned to them by the strata plan and bylaws:
- Furniture, planters, and other personal property placed on the balcony surface
- Interior finishes inside the unit that may have been damaged by a membrane failure (pending the strata's insurance coverage)
- In some stratas: tiles or other finish materials the owner has installed over the membrane surface — though not the membrane itself
- In some older or unusual strata plans: certain "limited common property" areas where a bylaw explicitly assigns maintenance to the owner — check your strata's registered bylaws and strata plan
When strata bylaws try to shift the responsibility — and when that works
Some stratas have bylaws that attempt to make individual owners responsible for balcony maintenance. Whether these are enforceable depends on what the bylaw says and what it is trying to achieve.
| Bylaw / Situation | Legal Status |
|---|---|
| Bylaw says owner is responsible for "balcony cleaning" | Lawful — cleaning is different from structural maintenance. The strata still owns and maintains the membrane. |
| Bylaw says owner is responsible for "limited common property maintenance" | Potentially valid for surface-level care; courts have struck down attempts to push structural maintenance (membrane replacement) onto owners through LCP bylaws. Legal advice recommended before relying on this. |
| Strata has never maintained membranes and says "owners always did it" | Practice and obligation are different. A strata cannot abdicate its Section 72 duty by custom or inaction. Courts have held stratas liable for water damage resulting from deferred common-property maintenance regardless of historical practice. |
| Owner installed tiles or pavers over the membrane surface | The owner may be responsible for removing those tiles to allow membrane access — and reinstalling them after — depending on bylaws and the repair circumstances. The membrane itself remains strata responsibility. |
How the strata funds balcony waterproofing work
Under Section 92 of the BC Strata Property Act, the strata must maintain a contingency reserve fund for major repairs and replacements — including membrane renewals. For a strata that has been maintaining its reserve fund according to its depreciation report model, balcony membrane replacement should be funded from the reserve.
If the reserve fund is insufficient — a very common situation in stratas that deferred contributions or are facing early membrane failure — the strata must pass a special levy. A special levy requires a ¾ vote of owners at a general meeting. The cost is allocated across all owners by unit entitlement, not charged to the individual owner whose balcony is failing.
What happens when a strata refuses to pay
If your strata is incorrectly pushing balcony membrane repair costs onto individual owners, you have several options. First, request written confirmation from the strata council of their legal basis for the decision. Second, review the strata plan at the Land Title and Survey Authority to confirm the balcony classification. Third, if the council maintains its position, file a complaint with the BC Civil Resolution Tribunal (CRT), which handles strata disputes efficiently and inexpensively. The CRT has a strong track record of enforcing the Section 72 maintenance obligation.
Strata owners and councils should also be aware that a strata that is found to have negligently deferred maintenance — receiving a condition report flagging a membrane failure and choosing not to act — can face expanded liability for interior damage caused by the failure. The Section 72 duty to maintain is the strata's legal exposure, not just an administrative convenience.
Quick answers
Does the strata pay for balcony waterproofing in BC?
Yes, in virtually all BC strata buildings. Under Section 72 of the BC Strata Property Act, the strata corporation is legally obligated to repair and maintain common property and common assets. Balcony structural slabs and waterproofing membranes are almost always classified as common property (or limited common property where the strata bears maintenance responsibility). This means the strata pays for membrane repair, replacement, and any associated concrete work — not the individual unit owner. Owners are responsible only for what is explicitly assigned to them by the registered strata plan and the corporation's bylaws: typically the interior of the unit and personal property on the balcony surface.
What if my strata bylaw says owners are responsible for their balconies?
Strata corporations have limited ability to shift common-property maintenance obligations onto owners by bylaw. Courts in BC have consistently held that a strata cannot pass a bylaw that effectively requires owners to maintain structural elements that are classified as common property under the Strata Property Act. A bylaw saying "owners are responsible for balcony maintenance" can lawfully cover cleaning, plants, and personal property — but it cannot make the owner responsible for a structural membrane replacement that the Act requires the strata to fund. If your strata is pushing back on this, seek advice from a strata lawyer or the Civil Resolution Tribunal.
My balcony membrane failed and water leaked into my unit below. Who is responsible?
The strata corporation is responsible for repairing the failed membrane (as common property) and typically for damage to the interior common-area structure, such as the structural slab. Insurance coverage for the interior unit damage — drywall, flooring, cabinetry — depends on the strata's master insurance policy and the owner's own contents/unit insurance. BC strata insurance is complex: most master policies cover the original building standard (bare walls), and owner's insurance covers upgrades, contents, and sometimes the unit as-improved. It is worth reviewing both policies with your strata manager before a repair claim is submitted, since an insurer's response may depend on whether the strata had a duty to maintain the membrane and deferred it.
This page provides general information about BC strata law as it relates to building envelope maintenance. It is not legal advice. For specific disputes or complex situations, consult a BC strata lawyer or the Civil Resolution Tribunal.
Balcony waterproofing responsibility questions
Does the strata pay for balcony waterproofing in BC?
Yes, in virtually all BC strata buildings. Under Section 72 of the BC Strata Property Act, the strata corporation is legally obligated to repair and maintain common property and common assets. Balcony structural slabs and waterproofing membranes are almost always classified as common property (or limited common property where the strata bears maintenance responsibility). This means the strata pays for membrane repair, replacement, and any associated concrete work — not the individual unit owner. Owners are responsible only for what is explicitly assigned to them by the registered strata plan and the corporation's bylaws: typically the interior of the unit and personal property on the balcony surface.
What if my strata bylaw says owners are responsible for their balconies?
Strata corporations have limited ability to shift common-property maintenance obligations onto owners by bylaw. Courts in BC have consistently held that a strata cannot pass a bylaw that effectively requires owners to maintain structural elements that are classified as common property under the Strata Property Act. A bylaw saying "owners are responsible for balcony maintenance" can lawfully cover cleaning, plants, and personal property — but it cannot make the owner responsible for a structural membrane replacement that the Act requires the strata to fund. If your strata is pushing back on this, seek advice from a strata lawyer or the Civil Resolution Tribunal.
My balcony membrane failed and water leaked into my unit below. Who is responsible?
The strata corporation is responsible for repairing the failed membrane (as common property) and typically for damage to the interior common-area structure, such as the structural slab. Insurance coverage for the interior unit damage — drywall, flooring, cabinetry — depends on the strata's master insurance policy and the owner's own contents/unit insurance. BC strata insurance is complex: most master policies cover the original building standard (bare walls), and owner's insurance covers upgrades, contents, and sometimes the unit as-improved. It is worth reviewing both policies with your strata manager before a repair claim is submitted, since an insurer's response may depend on whether the strata had a duty to maintain the membrane and deferred it.
Can the strata charge a special levy to the owner of the leaking balcony?
No — a special levy cannot be applied only to the owner of the failing balcony, since the obligation to fund common property repairs is shared across all owners. However, a strata can pass a special levy for the cost of repairing multiple balconies or for a building-wide membrane replacement program, allocating costs by unit entitlement or by a flat per-unit model, as approved by a ¾ vote of owners. An individual owner who has deliberately damaged a common property membrane — through improper installation of pavers, for example — may have some personal liability for the repair cost, but that is a separate legal question from the baseline funding obligation.
What if the balcony membrane failed because the owner installed a hot tub or heavy tiles?
Modifications to common property that damage or void the membrane warranty are typically a bylaw violation. Most strata bylaws require owner approval before installing anything that penetrates or loads the balcony membrane. If an owner's unauthorized modification caused the membrane failure, the strata may have a claim against that owner for the cost of repair — but this needs to be documented, addressed through the strata's enforcement process, and potentially litigated through the Civil Resolution Tribunal. The strata's duty to repair the membrane as common property remains; what changes is whether that cost can be recovered from the responsible owner.
What sections of the BC Strata Property Act govern balcony maintenance?
The primary provisions are: Section 72 — the strata corporation's duty to repair and maintain common property and common assets; Section 73 — allowing the corporation to enter a strata lot (with notice) to inspect and carry out common-property repairs; Section 92 — requiring the strata to establish a contingency reserve fund for replacements; and the Schedule of Standard Bylaws, which governs how repair obligations and costs are typically allocated. The specific classification of your balcony as common property or limited common property is determined by the registered strata plan — you can find this at the Land Title and Survey Authority of BC.
Balcony membrane failing? Get the facts before the next strata meeting.
Allweathercoating provides balcony condition assessments and written scopes for strata corporations across Vancouver, North Vancouver, West Vancouver, and Burnaby — the kind of independent written report that gives strata councils the confidence to bring the work to owners for approval.