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Triplex Inspection Montreal: Complete Multi-Unit Building Guide

8 min readFebruary 5, 2026

Triplex Inspection Montreal: Complete Multi-Unit Building Guide

Key Takeaways:

  • Triplex inspections take longer and cost more than single-family homes
  • Each unit should be inspected individually
  • Common areas and shared systems require careful evaluation
  • Income potential doesn't offset hidden repair costs
  • Fire safety and building code compliance are critical

What is a Triplex Inspection?

A triplex inspection examines a three-unit residential building, including each individual unit, all common areas, and shared building systems. This is significantly more complex than inspecting a single-family home.

Why Montreal Triplexes Need Special Attention

Montreal is famous for its classic triplex architecture. These iconic buildings, many built between 1900-1950, come with their own set of challenges and considerations.

How Long Does a Triplex Inspection Take?

Expect a thorough triplex inspection to take:

  • Exterior and common areas: 1-2 hours
  • Each unit: 1-1.5 hours per unit
  • Systems (electrical, plumbing, HVAC): 1-2 hours
  • Total time: 4-6 hours minimum

What We Inspect in a Montreal Triplex

Building Exterior

  • Brick condition and pointing
  • Balcony structural integrity
  • Exterior staircases (iconic to Montreal)
  • Roof condition
  • Foundation walls

Individual Units

Each unit is inspected for:

  • Electrical panels and wiring
  • Plumbing fixtures and drainage
  • Heating systems
  • Windows and doors
  • Interior finishes
  • Kitchen and bathroom condition

Common Areas and Systems

  • Shared hallways and entries
  • Main electrical service
  • Water shut-offs
  • Shared plumbing stacks
  • Basement/common storage
  • Laundry facilities

Fire Safety

  • Smoke and CO detectors
  • Fire separation between units
  • Emergency egress
  • Electrical safety

Common Issues in Montreal Triplexes

1. Exterior Staircase Problems

Montreal's famous exterior staircases face:

  • Rust and deterioration
  • Ice and snow damage
  • Code compliance issues
  • Replacement can be costly

2. Shared Plumbing Issues

  • Aging cast iron stacks
  • Clogged main drains
  • Water pressure problems

3. Electrical Challenges

  • Multiple outdated panels
  • Insufficient capacity per unit
  • Aluminum wiring (1960s-70s buildings)

4. Roof and Flat Roof Issues

  • Multiple penetrations (vents, pipes)
  • Ponding water
  • Membrane deterioration

Questions to Ask Before Buying

1. When was the roof last replaced?

2. Are all units separately metered for hydro?

3. What's the condition of the heating system?

4. Are there any active tenant complaints?

5. When was plumbing/electrical last updated?

Protect Your Investment

A triplex can be an excellent investment, but hidden repairs can quickly erode your returns. A thorough inspection identifies issues before they become your expensive problems.

Considering a triplex investment? Our inspectors have evaluated hundreds of Montreal multi-unit buildings. Get a comprehensive inspection before you commit.

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