Site Alteration By-law

• Unanticipated drainage and site alteration is prevented;
• Appropriate drainage patterns are maintained;
• Interference and damage to watercourses or water bodies is limited;
• Water quality is maintained;
• The use of hazardous and/or improper fill is prevented;
• Erosion and sedimentation is prevented;
• Natural heritage features such as wetlands, valley lands and wood lands and areas of archeological resources are protected; and
• The city's natural topography, soils and vegetative features are considered.

What you must know 

The land you own, where your home sits, is called a lot and in some instances designed with a swale in the backyard or side yards.  This shallow ditch or depression in the ground, guides surface water safely off your property.  It must be protected and maintained, along with the flow of natural waterways such as streams.  This ensures that homes don't experience flooding from spring thaws or rainstorms and that yards don't suffer from ponding or collected water that doesn't go anywhere. 

When homeowners plan a new garden and landscaping projects, these swales must be preserved. 

The following are a few guidelines to help you determine if a permit is required

• When you alter the grade on your property by more than 150 mm (6") by adding or removing soil.
• When you install a retaining wall.
• When you construct a pool, deck, fence, shed, garage or other structure.
• When you install a pond.
• When you install a driveway or sidewalk.
• When you install raised gardens or flower beds.

Applying for a site alteration permit 

If a Site Alteration Permit is required, the applicant should submit the following items:

• A completed Site Alteration and Grading Application Form
• A detailed plan or survey (to scale) showing existing and proposed elevations and distances; and
• Supporting studies or reports (if required)

Permit Fees 

This is a no fee permit

Length of time a site alteration permit in effect

A Site Alteration Permit will remain in effect for a period of six (6) months from the date of issuance.  A permit may be extended once, upon written application to the Inspector, prior to the date of expiry. 

When in doubt, check it out!  Help is always available. 

For more information please contact the City of St. Thomas Environmental Services Department at 519-631-1680 extensions 4228 or 4259.