Why neighbourhood comparison matters
Rat density in Vancouver is not uniform. The city's average hides substantial variation — neighbourhood-level differences driven by housing stock age, construction density, proximity to food waste sources, tree canopy connectivity, and the natural geography of pest dispersal. Understanding your specific neighbourhood's profile gives you a more accurate risk assessment than the city average, and helps you prioritise prevention investment appropriately.
Kitsilano: the roof-rat-dominant profile
Kitsilano's pest profile is predominantly roof rat (Rattus rattus) rather than Norway rat (Rattus norvegicus). The neighbourhood's mature street tree canopy — London planes, maples, and ornamental cherries along the principal streets — provides aerial connectivity that roof rats exploit. The north-south streets from Broadway down to the beach, with their continuous tree canopy, create rat highways from the denser urban core of West Broadway and Arbutus ridge to the residential blocks below.
Kitsilano's housing stock is predominantly pre-1960 craftsman and 1940s–1960s bungalow. The vintage housing entry-point profile applies: cedar soffits, aged crawlspace vents, original weatherproofing at utility penetrations. Roof rat activity in Kitsilano concentrates in attic and ceiling spaces, accessible via soffit gaps at the roofline. Homeowners in Kits who hear sounds overhead at night — specifically running and scratch sounds in the ceiling — have roof rats until proven otherwise.
Marpole: the expansion zone pressure
Marpole's +22% YoY rat callout increase in our 2025–2026 data is the third-highest neighbourhood increase in Metro Van. The neighbourhood is in the geographic expansion zone of the roof rat population moving southward from South Vancouver — specifically from the Oak Street / 49th Ave corridor, which has had documented roof rat activity for more than a decade, toward the Marpole streets below 59th Avenue.
Marpole's housing stock is predominantly 1960s bungalow with high laneway house density. The laneway house construction wave has been active in Marpole for the past decade — and every laneway build involves excavation, concrete pour, and new penetrations adjacent to the existing main house. This construction-phase disturbance, repeated across many adjacent properties, displaces established Norway rat burrow systems into surrounding structures. The cumulative effect of hundreds of individual laneway builds across Marpole is a diffuse construction-displacement pressure that has been running for a decade.
| Factor | Kitsilano | Marpole |
|---|---|---|
| Dominant species | Roof rat | Roof rat + Norway rat |
| YoY callout trend | Moderate (+11%) | High (+22%) |
| Housing stock age | Pre-1960 craftsman dominant | 1960s bungalow + laneway conversions |
| Primary entry point | Soffit-fascia gaps (attic access) | Crawlspace vents + laneway-construction disturbance |
| Tree canopy | Dense (roof rat connectivity) | Moderate |
| Norway rat burrowing | Limited (denser infill) | Active (pre-laneway yard substrate) |
| Seasonal pattern | Year-round roof rat + fall Norway rat push | Heavy fall push + year-round Norway rat |
What the difference means for exclusion strategy
Kitsilano's roof-rat-dominant profile means exclusion priority is at the roofline: soffit-fascia junctions, any cedar soffit butt-joint gaps, vents in the attic space, and utility penetrations through the fascia and soffit. A Kits exclusion inspection needs to include rooftop or drone assessment — gaps at soffit level are not fully visible from the ground.
Marpole's Norway rat and laneway-disturbance profile means exclusion priority is at grade level: crawlspace vents and doors, utility penetrations at foundation level, garage door bottom seals, and any landscaping gaps adjacent to laneway construction. If your Marpole home backs onto an adjacent laneway that has had recent construction, year-round perimeter bait management is appropriate in addition to structural exclusion.
Signs specific to each neighbourhood
- Kitsilano roof rat signs: scratch and running sounds in the ceiling (not the wall, the ceiling) between 10pm and 3am; droppings 12–15mm, curved, found on shelves and upper cabinet surfaces; visible roof rat entry at soffit gaps visible from the street with binoculars.
- Marpole Norway rat signs: burrow holes 8–10cm diameter in yard, particularly near laneway boundary; droppings 18–20mm blunt capsules in garage and crawlspace; gnaw damage on landscape irrigation or utility lines at or near grade.
- Both neighbourhoods: chewed weatherproofing around exterior doors or vents; greasy rub marks along baseboards; ammonia smell near suspected harborage areas.