Suite & ADU Rules in Drummondville, QC

Property address check

Check a Drummondville property by address.

Use the address tool to locate the property. Municipal zoning, parcel overlays and permits must be verified independently; this guide is not a permit decision. Last source review: 2026-10-09.

Property address

Address matching is not zoning certification. A municipality must confirm zoning and any relevant lot restrictions.

Municipal source reviewReviewed 9 October 2026

Short answer

Drummondville Zoning Regulation 4300 includes provisions for accessory and intergenerational dwellings.

Official-record update — October 13, 2026: Article 307 of the city’s published Zoning Regulation 4300 chapter 5 describes a distinct intergenerational-unit category requiring a family or affinity relationship to an owner-occupant. Do not mistake that family-only category for unrestricted rental-suite permission. The municipal PDF is an administrative consolidation incorporating amendments only through April 15, 2024, so current enacted text needs checking.

Evidence: published article 307 family only / consolidation old. Still unresolved: Current signed sections 307–310 and any newer amendment; other accessory dwelling category and parcel zoning. No parcel approval or final comprehensive legal signoff.

What local rules actually say

The city’s zoning chapters distinguish an accessory dwelling from a family-only intergenerational arrangement. Current precise floor-area and placement rules must be taken from the adopted zoning section, not from a later draft change circulated in 2025.

Important exceptions and the next step

The published 2025 text includes proposed adjustments to accessory/intergenerational unit standards; do not count a proposal as effective. Confirm district zoning, current section wording, private servicing and permits.

How to verify an individual property

Look up the legal property address and zone on the official Drummondville zoning map.
Confirm the proposed dwelling type: internal suite, addition, detached garden home or multiplex; these can follow different rules.
Verify zone exceptions, lot size, servicing, hazard/heritage limits, any registered restrictions and the current amending bylaws.
Ask the local planning/building office for the required written zoning confirmation and building permits before commissioning construction.

Québec temporary attached-unit rule (2024–2029)

A separate Québec measure runs from 21 August 2024 through 20 August 2029. It can allow ONE additional attached dwelling in an eligible detached house within the urban perimeter, despite ordinary local zoning, subject to statutory exclusions and possible municipal opt-out. It does not authorize detached backyard cottages and does not waive municipal permits, architectural standards, building safety or hazard and heritage protections.

Can you build here?

What to verify before building in Drummondville.

This is the simple build-direction summary. The exact property still has to meet its zoning, site, servicing and permit requirements.

Internal additional unitConditional — verify

Detached garden / backyard unitProperty-specific

DuplexProperty-specific

TriplexProperty-specific

FourplexProperty-specific

Before you build: confirm the exact property, zoning and permit path with Drummondville.

Next planning steps

Confirm the property rules, then plan your project costs.

Official sources explain the possible permission paths; a property-level zoning review comes before budgeting and contractor quotes.

1 · BudgetEstimate renovation costs in DrummondvilleOpen the matching Home Cost Canada city page, then adjust the project and scope.Open cost planner →2 · ContractorFind a local contractorHomeSelect is a separate contractor-matching service. Use it after the zoning and permit path are understood.Start contractor match →

Planning sequence: rules → budget → written scope / contractor. Cost models and contractor matching do not determine whether the municipality will approve the work.

Municipal evidence check — October 12, 2026

What the reviewed official material supports: Drummondville Zoning Bylaw 4300 distinguishes intergenerational additional dwellings and other dwelling categories. Existing adopted provisions must not be replaced with unconfirmed 2025 proposed adjustments.

Remaining verification: Retrieve the enacted and current amended chapter and applicable zoning grid; verify family-occupancy conditions, municipal opt-outs and code/permit requirements.

Evidence level: Municipal regulatory material (not a certified consolidation). Full enacted-bylaw signoff: Not completed. Property approval: Not assessed. Use the official source links below before making any building decision.

Priority evidence follow-up — October 12, 2026

Official-source finding: Section 307 of municipal Zoning Regulation 4300 expressly restricts the intergenerational accessory-dwelling category to qualifying family/affinity relationships with the owner-occupant.

Not yet cleared: This restriction applies to the intergenerational category; other additional-dwelling options require their own enacted-rule review. No general unrelated-tenant eligibility inferred.

Evidence status: CONFIRMED CATEGORY RESTRICTION. This is not a complete adopted-bylaw, zoning-map, appeal or property-specific approval determination.

How this guide was verified

Guide verification: Official-source research summary. This guide provides linked municipal research; a complete enacted-bylaw, zoning-map and amendment cross-check has not been documented for this municipality.

Property confidence: Not assessed. City-wide guidance does not confirm permission for a particular parcel. Check official zoning, overlays and permits. How verification works →

Official sources

Reviewed 9 October 2026. Municipal guides describe published rules only. Source consolidations may not include the latest adopted amendment. No site-specific approval is represented.

Second-pass municipal evidence — official source ↗

Permission first. Construction second.