ZonePlan

Zoning · Mississauga · Residential

RS zone, Mississauga: Residential Small Lot

Part 4, Section 4.2.1, Table 4.2.1 (RS column) of the City of Mississauga Zoning By-law 0225-2007, as amended by 0379-2009, 0190-2014, 0181-2018/LPAT Order 2019 February 15, 0111-2019/LPAT Order 2021 March 09, 0018-2021, 0182-2024, 0048-2025.

A small-lot residential zone in Mississauga that allows detached and semi-detached houses (plus additional residential units) on compact lots with tighter setbacks than the standard R zones.

Is a property in the RS zone? Enter its address and the lookup returns the zone and these standards, including any site-specific exception.

Check an address

What the RS zone permits

  • Detached dwelling (see also 4.1.1, 4.1.16 and 4.1.17)
  • Semi-detached (see also 4.1.1 and 4.1.17)
  • Additional residential units (ARUs): up to two attached ARUs, or one attached and one detached ARU per lot (Table 4.1.1.1)
  • New fourplex, subject to Table 4.1.23.1
  • Accessory buildings and structures (4.1.2, Table 4.1.2.2)
  • Attached garage (4.1.12, Table 4.1.12.1); detached garage (4.1.12.2)

Standards

RequirementBy-law
Minimum lot area (interior lot)285 m²Interior lot: detached dwelling 285 m2; semi-detached 200 m2 (Line 3.1)
Minimum lot area (corner lot)370 m²Corner lot: detached dwelling 370 m2; semi-detached 280 m2 (Line 3.2)
Minimum lot width (interior lot)9.75 mInterior lot: detached dwelling 9.75 m; semi-detached 6.8 m (Line 4.1)
Minimum lot width (corner lot)12 mCorner lot: detached dwelling 12.0 m; semi-detached 9.8 m (Line 4.2)
Minimum front yard3.5 mInterior and corner lots: detached dwelling 3.5 m; semi-detached 4.5 m (Lines 6.1, 6.2). Garage face: detached 5.8 m; semi-detached 6.0 m (Line 6.3). See also 4.1.7 and 4.1.8
Minimum interior side yard1.2 mInterior lot, unattached side: detached dwelling 1.2 m on one side and 0.61 m on the other side; semi-detached 1.2 m (Line 8.1). Attached side: 0.0 m (Line 8.2). Corner lot: detached dwelling 0.61 m (Line 8.3). See also 4.1.7 and 4.1.8
Minimum exterior side yard3.5 m3.5 m (Line 7.0); garage face: detached dwelling 5.8 m, semi-detached 6.0 m (Line 7.1). See also 4.1.7 and 4.1.8
Minimum rear yard7 mInterior and corner lots: detached dwelling 7.0 m; semi-detached 7.5 m (Lines 9.1, 9.2). See also 4.1.7 and 4.1.8
Maximum building height10.7 mSloped roof, highest ridge 10.7 m (Line 10.0); flat roof 7.5 m (Line 11.0)
Maximum lot coverage40 %Detached dwelling 40%; semi-detached 45% (Line 5.0). Coverage is inclusive of an attached garage (Table 4.1.12.1)
Minimum landscaped open space30 %Minimum landscaped soft area in the yard containing the driveway: detached dwelling 30% of the front yard or exterior side yard (not of the lot); semi-detached n/a (Line 12.4)

Other provisions in this section

  • Maximum dwelling unit depth: 20.0 m (Line 14.0)
  • Attached garage permitted (Line 12.1); must comply with Table 4.1.12.1: max 1 per lot, max floor area 75 m2 measured from inside face of walls, minimum area of attachment to dwelling above grade 5.0 m in length and 2.0 m in height
  • Detached garage (4.1.12.2, Table 4.1.12.1): max 1 per lot, max floor area 75 m2, max lot coverage 10% of lot area, max height 4.6 m sloped roof / 3.0 m flat roof / 3.0 m eaves, not permitted between the front wall of the dwelling and the front lot line; rear-yard setbacks to interior side and rear lot lines 1.2 m where lot area >= 750 m2 or 0.61 m where lot area < 750 m2; 1.2 m from the dwelling on the same lot
  • Minimum parking spaces per Part 3 and Subsection 4.1.9 (Line 12.2)
  • Maximum driveway width per Subsection 4.1.9 (Line 12.3): Table 4.1.9A sets 3.0 m for lot frontage less than 6.0 m, 6.0 m for 6.1 m to 16.9 m, 8.5 m for 17.0 m or greater; maximum one driveway per lot (4.1.9.1.2)
  • Accessory buildings and structures per Subsection 4.1.2, Table 4.1.2.2 (Line 13.0)
  • Additional residential units (4.1.1): max two attached ARUs, or one attached and one detached ARU per lot; an attached ARU must meet the RS zone regulations; a detached ARU must meet Table 4.1.1.14: located in the rear yard (or rear yard and/or exterior side yard on RS corner lots); two-storey detached ARU only where lot area > 750 m2; max floor area 55 m2 where lot area <= 550 m2, otherwise 10% of lot area up to 100 m2; max height one storey 4.6 m sloped / 3.0 m flat, two storey 6.8 m sloped / 5.8 m flat; setbacks one storey 0.6 m interior side, 1.8 m rear, 2.5 m exterior side; two storey 1.8 m interior side, 1.8 m rear, 4.5 m exterior side
  • New fourplex permitted subject to Table 4.1.23.1: min lot area 295 m2 interior / 415 m2 corner; min lot frontage 9.75 m interior / 13.5 m corner; min front yard 6.0 m; min exterior side yard 4.5 m; min interior side yard 1.2 m; min rear yard 7.5 m; max dwelling unit depth 20.0 m; max height 10.6 m sloped roof / 8.1 m flat roof; lot coverage per 4.1.23.3; parking and driveway per 4.1.9 and Part 3
  • Roof top external heating and/or air conditioning equipment not permitted in RS zones (4.1.6.2)
  • Setbacks (note 2): minimum 30.0 m from a dwelling unit or ARU to a railway right-of-way (4.1.7.1); minimum setback to lands zoned G1 or G2 is the greater of 5.0 m or the required yard (4.1.8.1)
  • Home occupation (4.1.16) and resident physician/dentist/drugless practitioner/health professional (4.1.17) provisions apply to detached dwellings
  • All buildings must also comply with Parts 1 to 3 and Section 4.1 of the By-law
  • Site-specific exception zones RS-1 to RS-284 exist (Section 4.2.3); check the exception zone for the property before relying on these base standards

Source: Part 4, Section 4.2.1, Table 4.2.1 (RS column), By-law 0225-2007 (City of Mississauga), checked 2026-09-12. General provisions elsewhere in the by-law (parking, driveways, accessory buildings) also apply, and a numbered exception on the parcel can change any value here. Treat this as a pre-check, not a sign-off.

Other residential zones in Mississauga: R12, R13, R14, R16, RA1, RA2, RA3, RA4, RA5, RA6, RA7, RL, RM10, RM11, RM12, RM3, RM4, RM5, RM6, RM8, RM9