Zoning · Caledon · Residential
RM zone, Caledon: Multiple Residential
Section 6 – Residential Zones, Table 6.1 (permitted uses) and Table 6.2 (zone standards); Sections 6.4 (Additional Residential Units) and 6.5 (Multiplex Dwellings) of the Town of Caledon Zoning By-law 2006-50.
A zone for apartment buildings and small multiplex dwellings on larger lots, with generous setbacks and at least 45% of the lot kept as landscaped area.
Is a property in the RM zone? Enter its address and the lookup returns the zone and these standards, including any site-specific exception.
Check an addressWhat the RM zone permits
- Additional Residential Unit (subject to Section 6.4)
- Apartment Building
- Private Home Day Care
- Multiplex Dwelling (subject to Section 6.5)
Standards
| Requirement | By-law |
|---|---|
| Minimum lot area (interior lot) | 925 m²925 m2 plus an additional 120 m2 for each dwelling unit in excess of 6 (Table 6.2 footnote 5). Multiplex dwellings use Table 6.5 instead: 295 m2 for 2 units, 495 m2 for 3–4 units. |
| Minimum lot width (interior lot) | 30 m30 m (Table 6.2). Multiplex dwellings use Table 6.5 instead: 2 units – 9.75 m interior lot / 13.5 m corner lot; 3–4 units – 19 m. |
| Minimum front yard | 9 m9 m (Table 6.2). Multiplex dwellings (Table 6.5): 5.6 m to front wall of attached garage, 4.5 m to front wall of main building. |
| Minimum interior side yard | 7.5 m7.5 m for an apartment building (Table 6.2). Multiplex dwellings (Table 6.5): 1.2 m for 2 units, 3.0 m for 3–4 units. General Table 6.2 footnote 11: no interior side yard is required where a common vertical wall separates two dwelling units. |
| Minimum exterior side yard | 9 m9 m (Table 6.2). Multiplex dwellings (Table 6.5): 4.5 m. |
| Minimum rear yard | 7.5 m7.5 m for an apartment building (Table 6.2); 7.5 m for a multiplex dwelling (Table 6.5). |
| Maximum building height | 12.2 mApartment building of 7 or more dwelling units: 12.2 m; apartment building of 6 or fewer dwelling units: 10.5 m (Table 6.2). Multiplex dwellings (Table 6.5): 2 units – 10.6 m sloped roof / 8.1 m flat roof; 3–4 units – 11.0 m. |
| Maximum lot coverage | 20 %Building Area maximum 20% (Table 6.2). Multiplex dwellings (Table 6.5): 45% for 2 units, 50% for 3–4 units. Lot containing an Additional Residential Unit: 45% or existing zone requirement, whichever is greater (Table 6.3). |
| Minimum landscaped open space | 45 %Landscape Area minimum 45% (Table 6.2). Multiplex dwellings (Table 6.5): 20%. |
Other provisions in this section
- Privacy yards: minimum 1 privacy yard for each habitable room window any portion of which is less than 2.5 m above finished grade (footnote 6); minimum privacy yard depth 5 m.
- Play facilities: minimum 1 for each lot with more than 10 dwelling units (footnote 9); minimum play facility area 4%; play facilities only permitted in a rear yard or interior side yard, not in any portion of a privacy yard (footnote 10).
- Driveway setbacks: minimum 0.5 m, and 6 m from any street line; must comply with Section 5.2.14 Driveway Provisions for Residential Dwellings (footnote 14).
- Table 6.2 general footnote 11: where a common vertical wall separates two dwelling units, no interior side yard is required.
- General Provisions of Section 4 and Parking, Loading & Delivery Standards of Section 5 apply (Section 6.1).
- Additional Residential Units (Section 6.4): only permitted on the same lot as a detached, linked, semi-detached or townhouse dwelling; maximum 3 ARUs per lot; 1 parking space per ARU (none required if the by-law requires no parking for the main dwelling); building area for a lot with an ARU 45% or existing zone requirement, whichever is greater; lot with a detached ARU needs landscaping of 50% of the rear yard; unobstructed path from street to ARU entrance minimum 1.2 m (1.0 m allowed along an existing building wall).
- Detached Additional Residential Units (Table 6.4, RM zone): maximum 1 detached ARU containing 1 dwelling unit; located in any yard other than the front yard; floor area no greater than the ground floor area of the main dwelling and not exceeding 80 m2 GFA; maximum height 4.5 m; rooftop amenity areas not permitted; minimum 3 m separation from the main dwelling; interior side yard 1.2 m; rear yard 1.2 m; exterior side yard per zone; uncovered steps and eaves may encroach per Table 4.2.
- Section 6.4.7: a lawfully existing (as of October 28, 2025) detached garage or accessory building with lesser setbacks/separation sets the minimum setbacks and separation for a detached ARU.
- ARU maximum number/type also limited by the 2024 Provincial Planning Statement, Oak Ridges Moraine, Greenbelt, Niagara Escarpment plans and Bolton Special Policy Area (6.4.2); must comply with MDS formulae (6.4.3) and conservation authority regulations in regulated areas (6.4.4).
- Multiplex Dwellings (Section 6.5, Table 6.5): 2 units – lot area 295 m2, frontage 9.75 m interior / 13.5 m corner, building area 45%, height 10.6 m sloped / 8.1 m flat roof; 3–4 units – lot area 495 m2, frontage 19 m, building area 50%, height 11.0 m; both: driveway width max 6.0 m, driveway setback min 0.6 m (not applicable to lots belonging to the same multiplex dwelling), landscaping min 20%, front yard 5.6 m to garage / 4.5 m to main building, interior side yard 1.2 m (2 units) / 3.0 m (3–4 units), exterior side yard 4.5 m, rear yard 7.5 m.
- Section 6.5.2: in an existing site-specific RM zone within an urban settlement area established prior to (September XX, 2025), a multiplex of up to 4 units is permitted under the site-specific standards provided Table 6.5 lot area and frontage are met for the intended number of units, the maximum building area does not exceed 10% of the existing zone requirement, height is no greater than 11 m or the existing zone requirement (whichever is greater), and Table 5.1 off-street parking is met; site-specific multiplex standards in an existing exception zone apply in lieu of Section 6.5 including Table 6.5 (6.5.3).
- Section 6.5.4: where a conflict exists between this by-law and provincial plans or a Special Policy Area, the provincial plan or Special Policy Area applies.
Source: Section 6 – Residential Zones, Table 6.1 (permitted uses) and Table 6.2 (zone standards); Sections 6.4 (Additional Residential Units) and 6.5 (Multiplex Dwellings), By-law 2006-50 (Town of Caledon), 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.