Why Oil Tanks Matter
Before natural gas heating became widespread, many BC homes were heated with oil, stored in tanks either inside the home, above ground outside, or buried underground. When a home converted to another heating source, the tank wasn't always properly decommissioned or removed — it was often simply disconnected and left in place, sometimes forgotten entirely.
Why It's a Concern
Buried oil tanks corrode over time. A leaking tank can contaminate the surrounding soil and, in some cases, groundwater — creating an environmental liability that in BC generally follows the property, not the person who caused it. Site remediation costs for a confirmed leak can be substantial.
What We Look For
- Visible fill and vent pipes protruding from the ground, which may indicate a buried tank
- Above-ground tanks, including their condition and any signs of corrosion or leaks
- Evidence in the basement or utility areas of a decommissioned oil heating system
- Depressions or staining in the yard that could suggest tank removal or a past leak
What this means for you
A standard home inspection can flag signs that suggest a tank may be present, but confirming a buried tank definitively usually requires a specialized tank sweep using ground-penetrating equipment. If any signs are present, we recommend this before completing your purchase.
If a Tank Is Found
Removal and, if needed, soil remediation should be handled by a qualified environmental contractor. Getting documentation of proper decommissioning or removal is valuable — both for your own records and for any future sale of the property.