In Mississauga, a backyard or side yard fence can be up to 2 metres tall. Within 4.5 metres of the street, the limit drops to 1 metre for a solid fence or 1.5 metres for an open one. On a corner lot, anything inside the sight triangle is capped at 1 metre. You do not need a permit for a regular fence, but you do for a pool enclosure.
The rules come from Mississauga’s Fence By-law 0397-1978, most recently amended in 2026 by By-law 0020-2026, and the Swimming Pool Enclosure By-law 0191-2011. This guide explains both in plain language, with a checker for your own fence.
Check your fence before you build
Pick what you are building, where it goes and how tall it will be. The checker applies the Mississauga Fence By-law and Pool Enclosure rules.
Fence height limits in Mississauga
| Location | Maximum height |
|---|---|
| Rear yard and side yards | 2.0 m (about 6 ft 7 in) |
| Within 4.5 m of the street, solid fence | 1.0 m (about 3 ft 3 in) |
| Within 4.5 m of the street, open fence | 1.5 m (about 4 ft 11 in) |
| Corner sight triangle | 1.0 m, unless open and see-through |
| Next to industrial land, railways, hydro or utility sites | No 2 m limit |
| Chain link around a tennis court | No 2 m limit |
| Hedges, shrubs and trees | No limit, except in the sight triangle and near the street |
How height is measured
Height is measured from effective ground level, which the by-law defines as the average ground level within 1.25 m of the fence. On a sloped lot, that is why a fence can look taller on one side than the other and still comply. If you build the fence on top of a retaining wall or a raised planter, the measurement starts from the ground, not the top of the wall.
The 4.5 m rule near the street
Mississauga does not use the simple “front yard” test many cities use. The lower limit applies to any part of the fence within 4.5 m of the street line. The street line is your property line, which is usually set back from the curb and often from the sidewalk too. Measure from your survey, not from the curb.
The difference between solid and open matters here. A fence counts as open when at least one third of its surface is open space, like spaced pickets or wrought iron. Open fences can go 50 cm higher near the street because drivers can still see through them.
One more rule catches people on curving streets: if your backyard sits beside a neighbour’s front yard, any fence within 4.5 m of their driveway must be open so they can see when backing out.
Corner lots and the sight triangle
On a corner lot, the sight triangle is measured 6 m along each street line from where they meet. Inside that triangle, fences, privacy screens and maintained hedges are capped at 1 m unless they are open and do not block the view. Some newer subdivisions have a different triangle set by zoning or a site plan agreement, so check your survey.
Privacy screens
A privacy screen is a freestanding wall or panel, usually beside a patio or hot tub, that is taller than a fence would normally be. On residential land, privacy screens are allowed only in a side or rear yard and only if they meet all of these:
- More than 4.5 m from the street line
- More than 1.25 m from any side lot line (screens on the shared wall between semis or townhouses can be closer)
- More than 1.25 m from the rear lot line
- Total length of all screens no more than 12 m, and no single section longer than 9 m
- No more than 3 m high above effective ground level
Building the screen on a raised deck? Check our deck permit guide first. The 1.25 m setback is the rule most people miss. A 2.4 m screen on the property line is not a privacy screen in the City’s eyes. It is a fence that is 40 cm too tall.
Banned fence materials
On residential land, and on fence lines along a road next to residential land, these are not allowed:
- Barbed wire, razor wire and razor ribbon
- Chicken wire
- Sheet metal and corrugated metal
- Sharp projections on top of the fence
- Electric fences, except a 12-volt trickle charge used to contain animals on agricultural land, with warning signs about every 15 m
Do you need a permit for a fence in Mississauga?
No, not for a regular fence that meets the by-law. You do need City approval for a pool enclosure, and you need Council approval for any fence on City land, including the boulevard.
Before digging post holes, request free utility locates from Ontario One Call (1-800-400-2255) at least five business days ahead. Have a surveyor confirm the lot line if there is any doubt. A fence even 15 cm onto your neighbour’s land is their fence to remove.
Pool fences in Mississauga
Every outdoor pool, hot tub or spa needs an approved enclosure before it is filled. Mississauga’s 2026 pool guide sets these requirements:
| Rule | Requirement |
|---|---|
| Height | At least 1.2 m (4 ft), no more than 2 m above effective ground level |
| Gaps between boards, bars or rails | 10 cm (4 in) max |
| Chain link | Mesh 38 mm (1.5 in) max, solid top rail and bottom tension wire |
| Gap under the enclosure | 10 cm max at any point |
| Gates | Self-closing and self-latching, latch on the pool side at the top. A padlock alone is not enough |
| Pool location | Not in the front or required exterior side yard. At least 1.5 m from all lot lines, measured from the inside wall |
| Hot tubs and swim spas | A fitted, secured cover can serve as the enclosure if the unit meets zoning setbacks |
Pool enclosure fees for 2026
| Item | Cost |
|---|---|
| Enclosure inspection request | $402.53 including HST |
| Inspection and administration, in-ground pool, hot tub or spa | $297.19 |
| Inspection and administration, above-ground pool | $593.25 |
| Administration fee | $33.90 |
| Municipal services protection deposit, in-ground | $1,500, refundable |
| Municipal services protection deposit, above-ground | $750, refundable |
The deposit protects the curb, sidewalk and boulevard from damage by trucks and excavators. It is usually refunded four to six weeks after the final lot grading inspection, but if repairs are needed the City can hold it for up to 18 months. Book a pre-construction site meeting before work starts, then call 311 for the final inspection once the fence is up and before you add water.
Want a taller fence? Apply for an exemption
If your plan does not fit the by-law, you can apply to the City for a fence exemption. The Commissioner can approve it fully, partly or with conditions, and must give written reasons. The application needs:
- A property survey and a site plan showing the fence
- Fence specifications: material, height and length in each yard, gates, posts, rails and panels
- At least two photographs of the area
- Proof that you gave the City’s notice flyer to every abutting neighbour
- The application fee
Common reasons people apply: a backyard that backs onto a busy road, a lot much lower than the neighbour’s, or privacy beside a commercial property. Talking to your neighbours before you apply helps. They are told about the application either way.
Applications go to Licensing, Permits and Regulatory Services at 3235 Mavis Road, 905-615-4311.
Fines and orders
Since the 2026 amendment, the City can issue an administrative penalty for a fence that breaks the by-law, under its Licensing Administrative Penalty By-law. If the matter goes to court instead, a conviction carries a fine of $500 to $100,000. The City can also order you to fix or remove the fence by a set date. If you do not, it can do the work and add the cost to your property tax bill.
Fence disputes with neighbours
The Fence By-law covers height, location and materials. It does not decide who pays for a shared boundary fence or settle disputes between neighbours over one. Talk first, and put any cost-sharing agreement in writing. If you cannot agree, call 311 to ask how the City handles line fence disputes.
Buying a home in Mississauga? Check the fence
Fence problems pass to the new owner. Before you buy, look for a pool without a compliant enclosure, a tall fence near the street on a corner lot, or a fence that does not match the survey. If you plan to rent out a unit, also read our guide to registering a second unit in Mississauga, and if you have the space for a backyard suite, see Mississauga garden suite plans. Browse current listings on our Mississauga real estate page.
Living next door? Our Brampton fence by-law guide and Caledon fence by-law guide cover the rules in the rest of Peel.
Common questions
How high can a fence be in Mississauga?
2 m in rear and side yards. Within 4.5 m of the street, 1 m for a solid fence or 1.5 m for an open one. Inside a corner sight triangle, 1 m.
Do I need a permit to build a fence in Mississauga?
Not for a regular fence that follows the by-law. Pool enclosures need City approval before the pool is filled.
Can I build an 8-foot fence in my backyard?
Not without an exemption. 8 feet is about 2.44 m, which is over the 2 m limit. A privacy screen can go to 3 m, but only if it is more than 1.25 m from the lot lines and meets the length limits.
Can my hedge be taller than 2 m?
Yes. Hedges, shrubs and trees have no height limit, except inside a corner sight triangle and near the street where they would block visibility.
Is a hot tub required to have a fence?
A hot tub or swim spa needs an enclosure or a fitted, secured cover that prevents access when it is not in use, and it must meet zoning setbacks.
What is the fine for an illegal fence in Mississauga?
The City can issue an administrative penalty. If charged in court, the fine is $500 to $100,000. The City can also order the fence fixed or removed.
Sources
- City of Mississauga, Fence By-law 0397-1978, consolidated to By-law 0020-2026
- City of Mississauga, 2026 Swimming Pool and Hot Tub Installation Guide
- City of Mississauga, Swimming Pool Enclosure By-law 0191-2011
- City of Mississauga, Fence exemption application
This guide summarizes City of Mississauga rules as published in October 2026. It is general information, not legal advice. Confirm unusual cases with the City before you build.