Mississauga Fence Permit Site Plan: Corner Lots, Gates and Sightlines

A residential fence can improve privacy, define a property boundary, contain pets and control access to a backyard. On a Mississauga corner lot, however, fence planning becomes more complicated because the property has two street frontages and a corner visibility area that must remain safe for drivers, cyclists and pedestrians.

A clear Mississauga fence permit site plan shows the proposed fence and gates in relation to the legal lot boundaries, house, driveway, sidewalks, streets and corner sight triangle. It can help a homeowner confirm the design before installation and is particularly important when applying for a fence exemption.

Although most ordinary residential fences do not need a standard building permit, every fence must comply with the City’s Fence By-law. A separate approval process applies to pool enclosures, and a fence exemption is required when a proposed or existing fence does not meet the general by-law rules.

Does a Residential Fence Need a Permit in Mississauga?

The City says a permit may not be required to construct a fence in most cases. The fence must nevertheless comply with Fence By-law 0397-1978, as amended.^[1]

A formal City process may be required when:

• the proposed fence exceeds the permitted height;
• the fence does not satisfy a corner sight-triangle rule;
• the fence is proposed on City property, a road allowance or a City easement;
• the fence forms part of a swimming-pool enclosure;
• the property is governed by an approved site plan or site plan agreement;
• a property-specific zoning provision imposes another visibility requirement;
• the property is designated under the Ontario Heritage Act and the work requires heritage review; or
• the owner is applying for an exemption from the Fence By-law.

When Is a Fence Site Plan Required?

A basic compliant backyard fence may not require a City submission. A scaled site plan becomes especially useful or necessary when:

• the property is a corner lot;
• the fence approaches a street intersection;
• a vehicle gate is proposed near a sidewalk or driveway;
• the legal property line is uncertain;
• the fence is close to City-owned land;
• an unusual fence height is proposed;
• the owner is applying for a fence exemption;
• neighbours disagree about the location of a division fence;
• the fence forms part of a pool enclosure; or
• City staff request a drawing to understand the proposal.

Mississauga’s fence-exemption process specifically requires both a property survey and a site plan.^[1]

What Should a Mississauga Fence Site Plan Show?

A useful fence site plan should provide enough information to identify exactly where the fence and gates will be constructed.

Property information

• complete municipal address;
• legal lot and plan description;
• all property boundaries and dimensions;
• street names;
• both street frontages on a corner lot;
• north arrow;
• drawing scale;
• survey source or reference; and
• current zoning where property-specific zoning may affect the proposal.

Existing features

• existing dwelling;
• garage and accessory structures;
• driveway and curb crossing;
• sidewalks and boulevards;
• existing fences and gates;
• decks, patios and retaining walls;
• trees, hedges and shrubs;
• utility boxes, hydrants and poles;
• easements and rights-of-way; and
• neighbouring driveways where visibility may be affected.

Proposed fence information

• complete fence alignment;
• fence height for each section;
• whether construction is open or solid;
• fence material;
• pedestrian-gate location;
• vehicle-gate location;
• gate width and opening direction;
• distance from the fence to property lines;
• distance from the fence to street lines;
• the corner sight triangle;
• any section requiring an exemption; and
• post-installation access to utilities and drainage features.

Important Corrections to the Featured Image

The featured image is an educational example. It is not a legal survey, approved exemption or property-specific interpretation of the Fence By-law.

The corner sight triangle is generally 6 metres, not 9 metres

Mississauga’s current Fence By-law defines a corner-lot sight triangle as the triangular area formed by the two street lines and a diagonal line connecting points located six metres from the street-line intersection.^[2]

The image should replace both nine-metre dimensions with:

“General Fence By-law sight triangle: 6 m measured along each street line. Verify whether the Zoning By-law or a site plan agreement establishes another triangle.”

The by-law definition also allows a different sight triangle where one is established by:

• a relevant section of Mississauga’s Zoning By-law; or
• a site plan agreement applying to the property.

The one-metre sight-triangle limit is not absolute

The image describes one metre as the maximum fence height within the corner triangle.

The by-law says a fence, privacy screen, hedge, shrub or tree within the sight triangle cannot be higher than one metre unless:

• the fence is open construction; and
• it does not obstruct the visibility of motorists and pedestrians.^[2]

The corrected callout should read:

“Maximum 1.0 m within the sight triangle, unless open construction and confirmed not to obstruct visibility.”

The front-yard fence limit is not 1.2 metres

Within 4.5 metres of the nearest street line in a residential or commercial front yard, the maximum height is generally:

• 1.0 m for solid construction; or
• 1.5 m for open construction.^[2]

The image’s front-yard maximum of 1.2 metres should therefore be removed.

Remove the universal one-metre fence setbacks

The image labels the front, rear and interior side-yard fence setbacks as one metre.

The general Fence By-law does not establish those universal setbacks. A fence may be located on or close to the legal property line, subject to:

• accurate boundary information;
• the Division Fence By-law;
• City ownership and road allowances;
• registered easements;
• corner visibility;
• pool-enclosure rules;
• site plan agreements; and
• property-specific restrictions.

The setback labels should be replaced with actual dimensions from the proposed fence to the surveyed property lines.

Remove the universal gate-width minimums

The image identifies a minimum one-metre pedestrian gate and a minimum two-metre vehicle gate.

Those are reasonable illustrative dimensions, but they are not stated as universal minimums in the general Fence By-law.

The plan should instead label:

• the actual proposed clear gate width;
• the gate height;
• the opening direction;
• the distance to the sidewalk and street; and
• whether the gate serves a pool enclosure, driveway or other regulated use.

Clarify the permit wording

The image says to obtain a fence permit where required. A clearer statement is:

“Most ordinary residential fences do not require a standard permit. A fence exemption, pool-enclosure approval, heritage approval or other property-specific authorization may be required.”

How Fence Height Is Measured

Mississauga measures fence height above the effective ground level.

The Fence By-law defines effective ground level as the mean ground level within a radius of 1.25 metres around the location being considered.^[2]

This matters where the fence is beside:

• a slope;
• a raised garden bed;
• a retaining wall;
• a driveway ramp;
• new fill;
• a lowered patio; or
• uneven ground.

The site plan or fence elevation may need to show existing and proposed ground levels when the terrain changes significantly.

Residential Fence Height Guide

These are general rules. Pool fences, approved site-plan fencing, acoustic barriers and other special fences can follow different requirements.

What Is Open Construction?

An open-construction fence is designed so that at least one-third of its vertical surface is open space, allowing motorists and pedestrians to see through it.^[2]

Possible open-construction designs include:

• widely spaced vertical pickets;
• ornamental metal fencing;
• certain chain-link fences;
• open rail fencing; and
• other designs maintaining the required visible openings.

A fence should not be described as open construction merely because it contains small gaps between boards.

Visibility can also be reduced later by:

• privacy mesh;
• tarpaulins;
• vines;
• hedges;
• signs;
• stored materials; or
• snow accumulation.

Corner-Lot Sight Triangles

A corner sight triangle helps preserve a clear view through the intersection area.

Under the general Fence By-law definition, it is created by:

1. locating the point where the two street lines intersect;
2. measuring six metres along the first street line;
3. measuring six metres along the second street line; and
4. drawing a straight line between those two measured points.

The triangular area between the street lines and the diagonal is the general sight triangle.

The property’s legal street lines may not match:

• the edge of asphalt;
• the curb;
• the sidewalk;
• the edge of the boulevard;
• an existing fence; or
• the apparent edge of the front lawn.

A legal survey or reliable property plan is therefore important when preparing a corner-lot fence layout.

Fences Beside a Secondary Street

A corner lot commonly has:

• a front yard facing the primary street;
• an exterior side yard facing the secondary street;
• an interior side yard adjoining another property; and
• a rear yard.

A fence beside the secondary street may generally be up to two metres high outside the front-yard and sight-triangle restrictions, but the precise yard classification and property-specific controls must be verified.

The plan should show:

• which lot line is legally the front lot line;
• which street frontage forms the exterior side yard;
• the six-metre corner sight triangle;
• distance from the fence to both street lines;
• sidewalk location;
• driveways on the subject and neighbouring properties;
• trees, utility equipment and hydrants; and
• gate locations.

Driveway Sightlines

Fence placement can affect visibility where a vehicle leaves a driveway.

The Fence By-law contains a specific rule where the rear yard of one property abuts the front yard of another. A fence constructed within 4.5 metres of the adjoining property’s driveway must be open construction.^[2]

Even where this specific situation does not apply, a driveway gate or solid fence should be reviewed for:

• visibility of pedestrians using the sidewalk;
• visibility of vehicles approaching on the street;
• visibility of cyclists;
• gate swing;
• vehicle queuing;
• snow-storage space;
• driveway width; and
• nearby trees or utility boxes.

Pedestrian Gates

A pedestrian gate forms part of the fence and generally follows the fence-height rules applicable to its location.

The site plan should show:

• clear opening width;
• gate height;
• opening direction;
• latch position;
• distance from the public sidewalk;
• steps or changes in level;
• the walkway through the gate; and
• whether the gate serves a pool enclosure.

The general Fence By-law does not establish a universal one-metre minimum pedestrian-gate width. The proposed width should suit the intended access and any separate accessibility, pool or property-specific requirement.

Vehicle Gates

A vehicle gate should be wide enough for the intended vehicle and positioned so it does not create a hazard near the sidewalk or road.

The plan should identify:

• clear opening width;
• gate height;
• whether it is single- or double-leaf;
• gate swing or sliding direction;
• driveway width;
• distance from the sidewalk;
• location of the curb crossing;
• vehicle waiting space;
• utility poles and hydrants; and
• the sightline toward pedestrians and traffic.

The general Fence By-law does not establish the two-metre minimum vehicle-gate width shown in the image.

A gate should be designed so that its operation remains within private property and does not obstruct a public sidewalk, boulevard or street.

Fences and City Property

A fence or privacy screen cannot be constructed on:

• City-owned land;
• a highway;
• a road allowance;
• a City right-of-way; or
• a City easement

without written City authorization.^[2]

On a corner lot, the legal property boundary may sit behind:

• the curb;
• the boulevard;
• the public sidewalk;
• street trees;
• utility infrastructure; and
• the apparent edge of the maintained lawn.

The fence should be positioned using reliable boundary information rather than visual assumptions.

Boundary and Division Fences

A division fence is located on the boundary between two properties.

The City recommends that owners notify their neighbour before constructing, repairing or replacing a division fence. Disputes over the fence’s location or cost generally must be resolved between the property owners.^[1]

Before placing posts on the boundary, confirm:

• the legal lot line;
• whether a fence already exists;
• who owns the existing fence;
• the proposed material and height;
• which side faces each property;
• how costs will be divided;
• whether the fence affects a driveway or gate; and
• whether a survey is required.

Fence Versus Privacy Screen

A privacy screen is regulated differently from an ordinary fence.

Mississauga generally permits a privacy screen in a side or rear yard when it:

• is more than 4.5 m from the street line;
• is more than 1.25 m from a side lot line, subject to the common-wall exception;
• is more than 1.25 m from the rear lot line;
• has a total length no greater than 12 m;
• has no individual section longer than 9 m; and
• is no more than 3 m above effective ground level.^[2]

A homeowner should not label a three-metre privacy wall as a normal fence simply to avoid the privacy-screen conditions.

Hedges, Shrubs and Trees Used as Fences

The Fence By-law’s definition of a fence includes hedges, shrubs and trees used to enclose land, divide a yard, establish a boundary or provide privacy.

Hedges and shrubs generally have no maximum height except where the front-yard or sight-triangle restrictions apply.^[2]

This means a corner hedge can violate visibility requirements even when no wood or metal fence is present.

Homeowners should maintain vegetation so that it does not:

• block the corner sight triangle;
• obstruct a sidewalk;
• hide pedestrians from drivers;
• cover traffic signs;
• interfere with utility equipment; or
• reduce the visibility through an open fence.

Prohibited Fence Materials

Residential fencing cannot contain hazardous materials such as:

• razor wire;
• razor ribbon;
• barbed wire;
• chicken wire;
• sheet metal;
• corrugated metal;
• sharp projections; or
• electrical fencing capable of injuring people.^[2]

Low-voltage electric fencing is permitted only in the limited agricultural circumstances described in the by-law.

Pool-Enclosure Fences and Gates

A fence surrounding a swimming pool is not governed only by the general Fence By-law.

Mississauga’s Swimming Pool Enclosure By-law prevails where its requirements conflict with the general fence rules.^[6]

A pool-enclosure gate must be:

• supported by suitable metal hinges;
• self-closing;
• self-latching;
• fitted with the latch at the top and inside of the gate; and
• provided with a locked drop bar on the secondary leaf where double gates are used.

A pool enclosure requires its own approval and inspection process. Do not use an ordinary garden-gate detail for a pool fence without checking the pool-enclosure requirements.

Fence Exemption Applications

An owner can apply for an exemption when a proposed or existing fence does not comply with the Fence By-law.

The City’s current fence information requires the following:

• completed Fence Exemption Application;
• application fee;
• property survey;
• site plan;
• fence description and specifications;
• construction and installation information;
• identification of the by-law section from which relief is requested;
• reasons for requesting the exemption;
• owner authorization where applicable; and
• at least two photographs showing the fence location and surrounding area.^[1]

Neighbours sharing a property boundary must be notified. The City may consider neighbour feedback when deciding whether to approve or refuse the request.

When reviewing an exemption, the City considers matters including:

• special circumstances affecting the property;
• practical difficulty or unnecessary hardship;
• effects on surrounding sightlines;
• potential hazards to people or vehicles;
• the affected ward councillor’s position; and
• correspondence received about the proposal.^[2]

What Makes a Good Fence-Exemption Site Plan?

A strong application drawing should clearly distinguish:

• existing fences;
• proposed fences;
• sections that comply;
• sections requiring exemption;
• solid and open construction;
• ground levels;
• fence heights;
• street lines;
• sight triangles;
• driveways and sidewalks;
• neighbouring access points; and
• the reason a different design is requested.

Photographs should be labelled so reviewers can match each photograph to a viewing direction on the site plan.

Check Underground Utilities Before Digging

Fence posts can damage buried gas, electrical, water and telecommunications infrastructure.

Ontario One Call says homeowners or contractors planning to build a fence must submit a public utility locate request at least five business days before digging.^[7]

Public utility locates may not identify privately owned infrastructure such as:

• electrical lines to a shed or detached garage;
• landscape-lighting cables;
• gas lines serving a barbecue or pool heater;
• irrigation lines;
• private drainage pipes;
• security-system wiring; and
• private telecommunications cables.

A private utility locator may be needed for those services.

Common Mississauga Fence Site Plan Mistakes

• Using a nine-metre corner sight triangle instead of the general six-metre triangle.
• Showing one metre as an absolute maximum inside the sight triangle without noting the open-construction exception.
• Using 1.2 m as the front-yard fence maximum.
• Applying one-metre setbacks to every property line.
• Measuring from the sidewalk or curb instead of the legal street line.
• Using an existing fence as the assumed legal boundary.
• Failing to show both street names on a corner lot.
• Leaving the secondary-street sidewalk off the drawing.
• Failing to identify whether a fence is solid or open construction.
• Providing no gate widths or swing directions.
• Showing universal pedestrian- and vehicle-gate minimum widths.
• Allowing a gate to obstruct the public sidewalk.
• Placing fence posts on City land or within a road allowance.
• Ignoring a neighbouring driveway.
• Blocking sightlines with hedges after installing an open fence.
• Failing to distinguish a privacy screen from a normal fence.
• Using ordinary gate details for a pool enclosure.
• Digging post holes before obtaining utility locates.
• Submitting a fence-exemption request without a survey, site plan or photographs.

Information Needed to Prepare the Site Plan

• complete Mississauga property address;
• legal property survey;
• lot and registered-plan information;
• property-boundary dimensions;
• both street names for a corner lot;
• existing dwelling and garage location;
• existing fence and gate locations;
• proposed fence alignment;
• proposed fence heights;
• solid or open-construction details;
• fence materials;
• pedestrian- and vehicle-gate locations;
• gate widths and opening directions;
• driveway and sidewalk locations;
• neighbouring driveways affecting visibility;
• trees, hedges and landscaping;
• utility equipment and easements;
• existing and proposed ground levels where relevant;
• photos of the property; and
• City comments or exemption requirements.

Typical Mississauga Fence Planning Process

1. Confirm the legal property boundaries.
2. Identify the front, exterior side, interior side and rear yards.
3. Locate both legal street lines on a corner lot.
4. Draw the general six-metre corner sight triangle.
5. Check whether zoning or a site plan agreement establishes another triangle.
6. Select the fence height and construction type for each section.
7. Position pedestrian and vehicle gates.
8. Review sidewalk, driveway and traffic visibility.
9. Check City property, easements and utilities.
10. Prepare the scaled fence site plan.
11. Determine whether the design complies or requires an exemption.
12. Submit the exemption or pool-enclosure application where applicable.
13. Request utility locates before digging.
14. Install the fence using the approved or compliant layout.

How Our Mississauga Fence Site Plan Service Works

1. Send the property address. We review available property and mapping information.
2. Provide the fence details. Include the proposed alignment, heights, materials and gate locations.
3. Upload available documents. A survey, title plan, fence quotation, photographs or City comments can improve the drawing.
4. We prepare the site plan. The plan can show property lines, the house, streets, sidewalks, fence sections, gates, sight triangles and relevant dimensions.
5. Review the draft. Confirm all supplied measurements before using the plan for contractor coordination or a City application.

Related SitePlans.ca guides:

• Site Plan for Permit in Mississauga, Ontario
• Mississauga Driveway Widening Site Plan
• Mississauga Accessory Structure Site Plan
• Ontario Site Plan Services for Building Permits
• Site Plan Requirements in Canada
• Site Plan vs Survey in Canada

SitePlans.ca prepares residential drafting plans using customer-supplied information and available property sources. Our drawings are not certified boundary surveys, legal opinions, traffic-engineering studies or guarantees of City approval. An Ontario land surveyor, engineer or other qualified professional may be required depending on the property and proposal.

Mississauga Fence Site Plan FAQs

Does a normal residential fence require a permit?

Usually not, but it must comply with the Fence By-law. A fence exemption, pool-enclosure approval or another property-specific authorization may be required.

What is the maximum backyard fence height?

The general maximum for a residential side- or rear-yard fence is two metres above effective ground level.

What is the front-yard fence limit?

Within 4.5 metres of the nearest street line, a solid front-yard fence is generally limited to one metre and an open fence to 1.5 metres.

What does open construction mean?

At least one-third of the fence’s vertical surface must be open space so motorists and pedestrians can see through it.

How large is a corner sight triangle?

The general Fence By-law triangle extends six metres along each street line from their point of intersection. A zoning provision or site plan agreement can establish another triangle.

Is a fence always limited to one metre inside the triangle?

No. A fence higher than one metre may be permitted when it is open construction and does not obstruct motorists or pedestrians.

Is the sight triangle measured from the curb?

No. It is measured along the legal street lines, which may be behind the curb, boulevard or sidewalk.

Does a fence need to be one metre from a property line?

No universal one-metre fence setback appears in the general Fence By-law. The legal boundary, City land, easements, visibility and other restrictions must still be checked.

Can a fence be built directly on the shared boundary?

A division fence can be located on the boundary, but the lot line should be verified and the neighbour should be notified before construction.

Can I rely on the existing fence as the property line?

No. Existing fences are sometimes offset from the legal boundary. A survey may be necessary.

What is the minimum pedestrian-gate width?

The general Fence By-law does not establish a universal one-metre pedestrian-gate minimum. The actual width should be shown and checked against the gate’s intended use.

What is the minimum vehicle-gate width?

The general Fence By-law does not establish the two-metre universal minimum illustrated in the image.

Can a gate swing across the sidewalk?

The gate should be designed to operate within private property and avoid obstructing the public sidewalk, boulevard or street.

Can a two-metre fence be installed beside the secondary street?

Potentially, when it is outside the front-yard height-control area and corner sight triangle. The legal yard classification and property-specific requirements must be confirmed.

Do hedges have to respect the sight triangle?

Yes. Hedges, shrubs and trees acting as fences cannot obstruct the corner visibility area.

Can I use corrugated metal for a residential fence?

No. The by-law includes corrugated metal among hazardous materials prohibited on residential fencing.

Does a pool gate follow the same rules as a normal gate?

No. Pool-enclosure gates have separate self-closing, self-latching and hardware requirements.

What documents are needed for a fence exemption?

The City requires an application, fee, property survey, site plan, fence specifications, reasons for the exemption, authorization where applicable and photographs.

Do neighbours receive notice of a fence exemption?

Yes. Neighbours sharing a common property boundary are notified and their feedback may be considered.

Do I need utility locates for fence posts?

Yes. Ontario One Call says a locate request must be submitted at least five business days before digging. Privately owned lines may require a separate private locate.

Can the site plan be revised after City comments?

Yes. It can be updated using corrected survey dimensions, revised fence heights, gate details, photographs or written City requirements.

Official Sources

1. City of Mississauga — Residential Fences, Heights and Exemptions
2. City of Mississauga — Fence By-law 0397-1978, Consolidated Through 2026
3. City of Mississauga — Fence Exemption Application
4. City of Mississauga — Division Fence By-law 0075-2004
5. City of Mississauga — Zoning By-law and Property Zoning Tools
6. City of Mississauga — Swimming Pool Enclosure By-law
7. Ontario One Call — Homeowner Utility Locate Requirements

Mississauga’s fence, zoning, pool-enclosure and exemption requirements can change. Individual properties may also be affected by site plan agreements, heritage designation, easements, restrictive covenants, City land and property-specific zoning provisions. Confirm current requirements with the City before installation.