Building Inspection

Building Inspector in
Rivière-des-Prairies–Pointe-aux-Trembles

At the northeast tip of the island of Montreal, Rivière-des-Prairies–Pointe-aux-Trembles (RDP-PAT) brings together post-war bungalows, waterfront residential areas and the oldest village on the island, founded in 1674. Bordered by the Rivière des Prairies to the north and the St. Lawrence River to the south, the borough faces specific inspection challenges tied to water, soil and the age of its housing stock.

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Housing Profile

Post-war bungalows
and historic village.

RDP-PAT's housing stock is dominated by bungalows and single-family homes built between 1950 and 1980, the peak of the island's residential expansion. The historic village of Pointe-aux-Trembles, founded in 1674, adds a unique heritage layer, while recent waterfront developments along the river introduce contemporary condos to the picture.

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Post-war Bungalows (1950-1980)
The core of RDP-PAT's residential stock: single-storey bungalows, two-storey cottages and semi-detached homes built during the post-war boom. Concrete-block or poured concrete foundations, original or first-generation windows, frequent aluminum wiring (1965-1975).
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Old Pointe-aux-Trembles Heritage
The historic village area holds century-old and heritage buildings along Notre-Dame East and around the Enfant-Jésus church. Stone or wood homes, old framing and mechanical systems modernised in successive layers. Inspections are more complex due to the mixed components.
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Condos & Recent Riverside Developments
Recent development has brought condo projects along the river in Pointe-aux-Trembles and across parts of RDP. Although new, these buildings may present challenges tied to drainage on former industrial land, foundation waterproofing and underground garages. Our condo inspection covers these issues.
Soil & Foundations

Between two waters
at the tip of the island.

Rivière-des-Prairies–Pointe-aux-Trembles is bordered on two sides by water: the Rivière des Prairies to the north and the St. Lawrence River to the south. This dual river exposure, combined with partially clay soil and several mapped flood zones, creates conditions favourable to infiltration, chronic moisture and mold development in basements.

Mapped flood zones — Several RDP-PAT areas fall within the 0-20 year and 20-100 year flood zones mapped by the City of Montreal. Properties bordering the Rivière des Prairies (RDP-North) and the St. Lawrence (waterfront Pointe-aux-Trembles) require a thorough pre-purchase inspection: sump pump, backwater valve, foundation waterproofing.
Clay soil & differential settlement — Soil in some areas contains sensitive clay that shrinks during dry spells and swells when saturated. This behaviour causes foundation cracks, uneven floors and doors that misalign with the seasons.
Pyrite under basement slab — As in several Greater Montreal sectors, certain RDP-PAT homes built between 1970 and 1990 contain pyritic backfill under the concrete slab. Backfill swelling causes progressive heaving and cracking of basement floors.
Chronic moisture & mold — RDP-PAT basements are particularly susceptible to moisture and mold due to the dual river exposure, high water table and often insufficient ventilation. A recurring finding in our inspections.
Common Findings

What we find in
RDP–Pointe-aux-Trembles.

Inspections we carry out in the borough reveal a consistent set of findings tied to the age of the housing stock (1950-1980 dominant) and the geographic specifics of the territory — dual river exposure, clay soil, flood zones.

Aluminum wiring (1965-1975) — A notable share of bungalows built in this period have aluminum wiring on 15 and 20 amp circuits. The material carries overheating risks at connections (outlets, switches, panel) and requires specific verifications (CO/ALR connectors, AluConn devices). Systematically documented in our reports.
Buried oil tanks (forgotten) — Several properties switched from oil heating to gas or electric without removing the buried tank. These corroded tanks can leak and contaminate soil — a costly environmental liability. We document visible clues (residual piping, old vents, ground depressions).
Vermiculite & asbestos — Bungalows and homes built before 1985 often contain vermiculite as attic insulation. A portion came from the Zonolite mine (Montana) and contains asbestos fibres. We document its presence and recommend a laboratory test before any renovation work.
Basement infiltration & mold — A classic combination at RDP-PAT: dual river exposure, aging concrete-block foundations, saturated or clogged weeping tiles. Result: chronic infiltration and mold development in finished basements.
End-of-life asphalt shingle roofs — The post-war housing stock is reaching the end of the cycle for original and first-replacement roofs. Lifted shingles, excessive granule deposits in gutters and deformations are frequent findings during our inspections.
Original or first-generation windows — Many homes still have their original (1960-1975) or first-replacement (1985-1995) windows. Marked energy inefficiency, deteriorated seals, winter condensation and broken thermal seals are the norm — a renovation expense to anticipate.
Neighborhoods Served

RDP–Pointe-aux-Trembles,
in detail.

We inspect buildings throughout all sectors of the borough, including:

Rivière-des-Prairies (RDP-North)
1960s-80s bungalows, quiet residential streets, sectors along the Rivière des Prairies
Pointe-aux-Trembles village
Historic core founded in 1674, heritage homes, Notre-Dame East, Enfant-Jésus church
Bout-de-l'Île
Eastern tip of the island, recent residential sectors and transition zones near the St. Lawrence
Waterfront Pointe-aux-Trembles
Recent developments along the river, modern condos and homes, former industrial sectors being revitalized
Our Services

Inspections available in
Rivière-des-Prairies–Pointe-aux-Trembles.

Post-war bungalows, heritage homes in Old Pointe-aux-Trembles, duplexes and triplexes, recent waterfront condos, multiplexes and commercial buildings — RDP-PAT covers a vast and varied housing stock with its own inspection challenges tied to water, soil and the age of the buildings.

Pre-Purchase Inspection in Rivière-des-Prairies–Pointe-aux-Trembles

RDP-PAT is one of Montreal's largest boroughs and its housing stock reflects that scale: post-war bungalows (1950-1980) dominate, alongside two-storey cottages, semi-detached homes, heritage houses in Old Pointe-aux-Trembles, brick duplexes and triplexes, and recent condo developments along the river. The dual river exposure (Rivière des Prairies to the north, St. Lawrence to the south) and mapped flood zones make pre-purchase inspection particularly important here.

Our pre-purchase inspection in RDP-PAT covers more than 400 points: foundation, structure, roofing, electrical, plumbing, ventilation, insulation, windows, cladding and grounds. We pay particular attention to aluminum wiring (1965-1975), buried oil tank indicators, potentially asbestos-contaminated vermiculite, pyrite under the basement slab, signs of infiltration and mold, and properties in flood zones. Report delivered within 24h*.

Home Inspection in Rivière-des-Prairies–Pointe-aux-Trembles

Single-family homes dominate RDP-PAT's housing stock: single-storey bungalows 1950-1975, two-storey cottages 1965-1985, semi-detached homes, a few split-levels and a growing number of recent constructions (1995-2025). Old Pointe-aux-Trembles adds a handful of century-old heritage homes. Recurring findings: aluminum wiring, vermiculite, original windows, damp basement.

A home inspection in RDP-PAT takes 3 to 4 hours on site and includes a full visit of every accessible level, the attic, the crawl space and the exterior. We pay particular attention to the foundation, electrical installations (aluminum, grounding), water drainage and signs of moisture in the basement. Report within 24h*.

Condo Inspection in Rivière-des-Prairies–Pointe-aux-Trembles

RDP-PAT has a growing condo stock, especially along the river in Pointe-aux-Trembles (recent projects with water views) and a handful of projects scattered through RDP. Duplex/triplex conversions into co-ownership are also present. Common findings: underground garage drainage, foundation waterproofing in damp zones, unit ventilation, build quality varying by developer.

Our condo inspection in RDP-PAT covers the interior of the unit (kitchen, bathrooms, windows, electrical panel, plumbing, ventilation) as well as the visible common areas. For waterfront projects, we recommend a detailed review of the contingency fund study and the maintenance log. See also what a condo inspection can — and cannot — reveal.

Plex and Multiplex Inspection in Rivière-des-Prairies–Pointe-aux-Trembles

RDP-PAT has a notable stock of duplexes, triplexes and fourplexes, mainly along the central residential arteries of Pointe-aux-Trembles and certain sectors of RDP. Typical construction 1955-1985: concrete-block foundations, copper or galvanized plumbing, electrical with possible aluminum presence, asphalt-shingle or multi-layer roofs, exterior staircases and balconies. Buildings of 5 or more units fall under the commercial / multi-unit category.

A plex and multiplex inspection in RDP-PAT examines each accessible unit, the common areas, structure, roofing, all mechanical systems, foundation and exterior. Custom quote within 24h.

Commercial Inspection in Rivière-des-Prairies–Pointe-aux-Trembles

RDP-PAT hosts a varied commercial stock: neighbourhood shops along Boulevard Maurice-Duplessis and Notre-Dame East, shopping centres in Rivière-des-Prairies, scattered office buildings, former industrial buildings (Pointe-aux-Trembles industrial park, petrochemical sectors undergoing conversion) and institutional buildings. Commercial buildings span a wide range of ages (1960-2025).

A commercial inspection in RDP-PAT covers the structure, building envelope, roofing (often flat membrane), electrical service, mechanical systems (HVAC, plumbing, sprinklers if applicable), accessibility, signs of code compliance, parking and grounds. For buildings with industrial history, environmental signals are documented. Custom quote.

FAQ

Questions about
RDP–Pointe-aux-Trembles.

Are basements in RDP–Pointe-aux-Trembles at risk of flooding?+
Yes, particularly in riverside sectors. RDP-PAT is bordered by the Rivière des Prairies to the north and the St. Lawrence to the south, and several zones fall within the flood maps published by the City of Montreal. Post-war bungalows built on concrete-block foundations are particularly vulnerable to spring infiltration. We systematically check the weeping tile, sump pump, backwater valve, foundation cracks and signs of chronic moisture.
Is aluminum wiring common in RDP-PAT homes?+
Yes, frequently. A significant share of bungalows built between 1965 and 1975 — the peak construction period in the borough — have aluminum wiring on 15 and 20 amp circuits. The material carries overheating risks at connections (outlets, switches, panel). We systematically document its presence, the state of visible connections and the presence (or absence) of CO/ALR or AluConn devices.
Should I worry about an old buried oil tank?+
Yes. Many RDP-PAT properties switched from oil heating to gas or electric during the 1980s-2000s without removing the buried tank. These corroded tanks can leak and contaminate the soil — an environmental liability that can cost tens of thousands of dollars to remediate. We document visible clues: residual piping, old vents, ground depressions, oil stains. A professional soil analysis is sometimes recommended.
How long does an inspection in RDP-PAT take?+
A pre-purchase inspection typically takes 3 to 4 hours on site for a single-family home (bungalow or cottage), and 2 to 3 hours for a condo. Heritage homes in Old Pointe-aux-Trembles, waterfront properties and multiplexes often take longer due to the complexity of the components. The full report with photos is delivered within 24h*.
Is mold common in RDP-PAT basements?+
Frequently, yes. The combination of dual river exposure, aging concrete-block foundations, saturated weeping tiles and often insufficient ventilation creates conditions favourable to mold development. Basements finished in the 1970s-1990s without adequate vapor barrier are particularly vulnerable. We document visible signs, recommend appropriate tests and offer a specialized mold and air quality service.
Which areas of RDP-PAT do you inspect?+
We inspect throughout the borough: Rivière-des-Prairies (RDP-North, RDP-South), Pointe-aux-Trembles (historic village, central sector, waterfront and Bout-de-l'Île), as well as commercial and industrial sectors. Bilingual service (FR/EN) available.
How much does a home inspection cost in Rivière-des-Prairies–Pointe-aux-Trembles? What is the price?+
Our rates in Rivière-des-Prairies–Pointe-aux-Trembles start at $550+tax for a condo, $750+tax for a single-family home, and custom quote for plex, multi-unit and commercial inspections. The cost of a home inspector, house inspector or property inspector depends on the size, age and complexity of the building. See our detailed pricing or contact us for a precise quote.
Are you a certified InterNACHI home inspector in Rivière-des-Prairies–Pointe-aux-Trembles?+
Yes. We are InterNACHI-certified (International Association of Certified Home Inspectors), IBC Network members, and professionally insured. As a home inspector, house inspector, property inspector and residential building inspector in Rivière-des-Prairies–Pointe-aux-Trembles, we meet the most demanding North American standards of practice.
Do you offer pre-purchase / pre-buy home inspections in Rivière-des-Prairies–Pointe-aux-Trembles?+
Yes. The pre-purchase inspection (also called pre-buy inspection, buyer inspection or inspection before buying) in Rivière-des-Prairies–Pointe-aux-Trembles is our most requested service. We accommodate tight purchase offer timelines — the inspection clause typically provides 7-10 days to complete the inspection and receive the report. Our complete report is delivered within 24h*.
Do you inspect condominiums, apartments and co-ownerships in Rivière-des-Prairies–Pointe-aux-Trembles?+
Yes. Our condo inspection in Rivière-des-Prairies–Pointe-aux-Trembles covers condominiums, divided and undivided co-ownerships, apartment co-ownerships, townhouse co-ownerships and plex conversions. We inspect the interior of the unit as well as visible common areas, and recommend a review of the contingency fund study.
Do you inspect duplexes, triplexes, rental and multi-family properties in Rivière-des-Prairies–Pointe-aux-Trembles?+
Yes. Our plex and multi-unit inspection in Rivière-des-Prairies–Pointe-aux-Trembles covers duplexes, triplexes, fourplexes, rental properties, multi-family buildings and income properties. Buildings of 5 units or more fall under the commercial / multi-unit category requiring an adapted inspection approach. Custom quote within 24h.
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RDP–Pointe-aux-Trembles?

Available 7 days a week. Report within 24h*. Expertise in post-war bungalows, waterfront properties and flood-zone areas.

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