Building & Plumbing Permits

Building permits are available to be printed up by clicking the link below. For further information, contact the clerks department at (519) 867-2021 or by e-mail at building@stclairtownship.ca

Building & plumbing permits are required for many home projects. The County of Lambton Building Services Department issue permits for St. Clair Township. To view building permit information for the homeowner on the County of Lambton web site or to download a building and plumbing permit application from Lambton County, please **click here**.

Online Building Permit Application **click here**

To determine the cost of a permit for your project, please refer to the Township Fees Bylaw.

B-L 11 of 2025 – Fees By-Law

To determine if your project is subject to Development Charges, please refer to the Township’s Development Charges By-law

B-L 6 of 2021 – Development Charges By-Law

2025 Schedule of Development Charges Fees “B”

News

Public Information Sessions – Proposed Energy Storage Project

Communications | July 7, 2026 St. Clair Township is sharing the following public notice on behalf of NRStor: NRStor is proposing a liquid-air energy storage (LAES) project in St. Clair Township as part of the Independent Electricity System Operator’s (IESO) Long Lead-Time Request for Proposals (LLTR RFP). Residents are invited to attend one of two

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Understanding Discoloured Water

St. Clair Township would like to remind residents that their tap water may occasionally appear yellowish or rusty coloured. We would like to reassure residents that the water remains safe, and provide context on why this occurs, how to clear it, and our long-term plan to address it. Why Rusty Water Happens Sediment Buildup: Natural

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