Underground Oil Storage Tank

An underground oil storage tank is a tank installed below ground, historically used to store heating oil for residential or commercial properties. In BC real estate transactions, USTs matter because a leaking or decommissioned tank can cause soil and groundwater contamination, creating significant environmental liability for property owners. Under BC's Environmental Management Act, owners of contaminated sites may be responsible for remediation costs regardless of when the contamination occurred.

Yes. Under the Real Estate Services Act (RESA) and the rules administered by the British Columbia Financial Services Authority (BCFSA), licensees have a duty to disclose known material latent defects, and a known or suspected underground oil storage tank that poses contamination risk would generally qualify as a material latent defect. A licensee who is aware of a UST must disclose it to a buyer and cannot knowingly withhold information that could affect the buyer's decision. Licensees should refer sellers and buyers to qualified environmental professionals for further assessment.

Contamination from underground oil storage tanks in BC is primarily governed by the Environmental Management Act (SBC 2003, c. 53) and the Contaminated Sites Regulation made under it. These provisions establish who may be deemed a responsible person for remediation, including current and former property owners, operators, and persons who caused or allowed the contamination. The BC Ministry of Environment and Climate Change Strategy oversees contaminated site assessments and remediation orders.

USTs are most commonly identified through a professional home inspection or a dedicated environmental site assessment (Phase I or Phase II ESA) conducted prior to completing a purchase. Visual indicators such as old fill pipes, vent pipes, or unusual soil conditions may alert an inspector to a buried tank's presence. Buyers in BC are advised to include appropriate conditions in their Contract of Purchase and Sale allowing for environmental inspection before subjects are removed.

The presence of a UST does not itself alter how Property Transfer Tax (PTT) is calculated under the BC Property Transfer Tax Act, as PTT is based on the property's fair market value at the time of transfer. However, confirmed contamination can reduce a property's fair market value, which in turn affects the PTT base. Buyers should consult the BC Ministry of Finance or a qualified professional regarding how an environmental issue might affect the declared fair market value used for PTT purposes.

Decommissioning a UST in BC typically involves hiring a qualified environmental contractor to excavate and remove the tank, test surrounding soil and groundwater for contamination, and prepare a site assessment report in accordance with the Environmental Management Act and the Contaminated Sites Regulation. If contamination is found, remediation may be required before the site receives a certificate of compliance or a notation is placed on the BC Site Registry. Municipalities may also have their own permitting requirements for tank removal, so the relevant local authority should be consulted.

A UST could exist beneath the common property or a strata lot of a strata corporation governed by the Strata Property Act (SBC 1998, c. 43). If the tank is located on common property, the strata corporation would generally bear primary responsibility for assessment and remediation as the entity that manages common property, potentially drawing on contingency reserve funds or levying a special levy on owners. If the tank is on a strata lot, liability may rest with the individual owner, and the strata corporation's obligations depend on its bylaws and the specific circumstances; legal and environmental advice should be obtained.

Yes. BC maintains the Site Registry under the Environmental Management Act, which is a publicly searchable database of properties with site profile information, remediation orders, approved remediation plans, and certificates of compliance related to contamination. A search of the Site Registry can reveal whether a property has a recorded environmental history, including contamination from petroleum products such as heating oil. Buyers and their agents are encouraged to conduct a Site Registry search as part of due diligence before completing a purchase.

A seller who knowingly conceals a material latent defect such as a UST may face civil liability for misrepresentation or fraudulent concealment, and a buyer may seek rescission of the contract or damages through the BC Supreme Court. If the seller used a licensee, the licensee could also face regulatory consequences under the Real Estate Services Act and BCFSA's Rules for failing to ensure proper disclosure was made. Sellers are strongly encouraged to disclose any known USTs in writing through the Property Disclosure Statement or equivalent documentation.

Yes. If a property in the ALR has a UST and associated soil contamination, remediation may be required before certain uses of the land are permitted, and the contamination could affect the agricultural productivity of the land. The Agricultural Land Commission Act (SBC 2002, c. 36), administered by the Agricultural Land Commission, governs land use within the ALR, and any remediation work or soil disturbance may require compliance with both ALC requirements and the Environmental Management Act. Owners of ALR properties with USTs should consult both the ALC and a qualified environmental professional to understand their obligations.