---
title: "R4-B zone in Chilliwack: Low Density Multi – Unit Secondary Suite"
place: Chilliwack, British Columbia, Canada
place_path: ca/bc/chilliwack
zone: R4-B
bylaw: Zoning Bylaw 2020, No. 5000 (City's consolidated copy, includes amendments through Bylaw 2026, No. 5592, October 20, 2026)
bylaw_read: 2026-11-07
review: draft
canonical: "https://govhandbook.com/ca/bc/chilliwack/zoning/r4-b/"
json: "https://govhandbook.com/ca/bc/chilliwack/zoning/r4-b.json"
---

# R4-B zone in Chilliwack: Low Density Multi – Unit Secondary Suite

Main uses: Duplex, Townhouse.

## Zone rules

- **Main uses:** Duplex; Townhouse
- **Also allowed (secondary uses):** Accessory Home Occupation; Off-Street Parking; Supportive Recovery Home; Townhouse Accessory Dwelling Unit; Urban Ancillary Use
- **Minimum lot area:** 1200 m²
- **Minimum lot width:** 30 m (minimum lot depth 30 m)
- **Maximum lot coverage:** 50% (all buildings and structures); urban ancillary uses 30 m² per dwelling unit
- **Maximum density:** 40 dwelling units per ha (all uses); floor area ratio 0.75
- **Maximum height:** 10 m (residential use)
- **Maximum height, accessory buildings:** 4 m (urban ancillary uses)
- **Front setback:** 6 m
- **Rear setback:** 6 m
- **Interior side setback:** 3 m
- **Street side setback:** 4.5 m
- **Accessory building setbacks:** Urban ancillary uses: front 6 m, rear 1 m, interior side 1 m, exterior side 4.5 m
- **Other rules:** A townhouse accessory dwelling unit is permitted within a townhouse or duplex, up to 90 m² gross floor area and less than 40% of the strata unit's habitable floor space; Parking for secondary suites must be signed for the sole use of the suite tenant; 0.2 extra visitor stalls are required per townhouse accessory dwelling unit; A duplex may only be permitted together with a townhouse development; Where there is more than one residential structure on a lot or in a strata, dwelling units must be 9 m apart face-to-face, rear yard to rear yard or rear yard to side yard, and 3 m apart side-by-side

## Source

- [Zoning Bylaw 2020, No. 5000 (City's consolidated copy, includes amendments through Bylaw 2026, No. 5592, October 20, 2026), s. 8.10](https://www.chilliwack.com/main/attachments/attachView.cfm?attachID=6624#page=133) (read 2026-11-07)

Rules in the bylaw's general sections (parking, fences, suites, home businesses) also apply. All zones in Chilliwack: https://govhandbook.com/ca/bc/chilliwack/zoning/index.json

_Draft: taken from the bylaw text by a research agent and not yet reviewed by a person. Gov Handbook is an independent guide. Canonical page: https://govhandbook.com/ca/bc/chilliwack/zoning/r4-b/_