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Port Coquitlam, BC suite & ADU rules

Permission first. Construction second.

Port Coquitlam’s current SSMUH page says properties in residential small-scale zones can support three to six units depending on lot size, location and proximity to transit. The City also publishes separate secondary-suite and ADU permit guidance.

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Step 1 of 4Property basics
Step 1: Property basics

Use the parcel area from your property record, assessment or municipal mapping tool.

This does not change the provincial unit-count math. It only tailors the next-step checklist in your result.

Step 2: Basic zoning checks

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Why are we asking?

Think houses, duplexes or small multiplexes. If you only know the zone code, choose Not sure.

Step 3: Possible exceptions

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Municipal rules · reviewed September 28, 2026

Port Coquitlam: the local rules that change the property answer

Port Coquitlam has a well-defined RS1–RS4 SSMUH framework plus separate secondary-suite and ADU permit routes. The prior generic page understated how much property-specific information the City already publishes.

1. RS1–RS4 SSMUH

  • The City permits SSMUH on RS1, RS2, RS3 and RS4 properties. It describes 3 to 6 units depending on lot size, location and transit proximity, with no rezoning needed for the qualifying SSMUH path.
  • The exact unit count still depends on the actual parcel; do not apply the maximum to every RS-zoned lot.

2. Secondary suites

  • Port Coquitlam’s building page says secondary suites are permitted in RS1–RS4 zones and require a Building Permit. The page is specifically a permit/code route for an internal suite.
  • This is separate from the detached ADU development-permit route.

3. Detached ADU / coach house

  • An ADU is a detached accessory dwelling at the rear of an RS-zoned lot. The City’s current ADU page caps the dwelling at 90 m² and sets access/siting standards.
  • New ADUs require a SSMUH Development Permit before a Building Permit; a watercourse within 50 m can trigger a separate Watercourse Protection Development Permit check.

4. Development Permit sequence

  • New duplexes, ADUs and developments with 3 or more dwellings require an SSMUH Development Permit before the Building Permit is issued.
  • The City does not publish one universal approval time on these pages, so this guide should not invent a “typical 4–6 week” review period.

Port Coquitlam property-check FAQ

Does a Port Coquitlam secondary suite use the same permit as an ADU?

No. Internal secondary suites use the building-permit route; detached ADUs and new duplex/3+ unit forms use the SSMUH Development Permit process before the Building Permit.

Can an ADU itself contain a secondary suite?

The current ADU page says it cannot contain a secondary suite.

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 Port Coquitlam sources

Rule sources used for this municipal guide.

Port Coquitlam — SSMUH ↗Port Coquitlam — Secondary Suites ↗Port Coquitlam — Accessory Dwelling Units ↗Port Coquitlam — SSMUH Development Permits ↗B.C. SSMUH framework ↗

Reviewed September 28, 2026. These links are the planning starting point; current parcel zoning, title constraints, servicing and permit requirements can still change the answer.

V69.61 targeted primary-source review · October 12, 2026: Official RS1-RS4 guidance permits conditional 3–6 SSMUH units but specifically excludes RS parcels within a designated transit-oriented area from that SSMUH route; new duplexes/ADUs and 3+ units generally require a development permit. Official municipal record ↗ Not yet verified: Check PoCoMAP, any restrictive covenants, watercourse development permit and current DCC/permit schedules. No comprehensive current-by-law signoff or parcel approval is claimed.