Ontario City Risk Score Checker
See your city's home inspection risk score before you buy
Scores are estimates from the age and type of local homes: how many were built in the eras that carry aluminum wiring, poly-B plumbing and other known issues. They are not counts of inspection findings.
Risk Scores by City
Higher score = more homes from build eras with known inspection issues. The percentage under each score is the share of sampled homes with a disclosed build era; below 50%, the score is a directional estimate.
112 cities
Glen Williams
Halton Region
84/100
High Risk31% data · directional
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Acton
Halton Region
76/100
High Risk29% data · directional
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Campbellville
Halton Region
75/100
High Risk50% data
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Carlisle
City of Hamilton
72/100
Elevated Risk61% data
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Greensville
City of Hamilton
68/100
Elevated Risk42% data · directional
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Malton
Peel Region
66/100
Elevated Risk13% data · directional
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Port Colborne
Niagara Region
63/100
Elevated Risk52% data
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Meadowvale
Peel Region
62/100
Elevated Risk16% data · directional
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Alton
Peel Region
61/100
Elevated Risk50% data
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St. Catharines
Niagara Region
61/100
Elevated Risk58% data
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Dundas
City of Hamilton
60/100
Elevated Risk58% data
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Crystal Beach
Niagara Region
57/100
Elevated Risk54% data
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Wainfleet
Niagara Region
56/100
Elevated Risk53% data
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Brock
Durham Region
54/100
Elevated Risk34% data · directional
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Halton Hills
Halton Region
54/100
Elevated Risk31% data · directional
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Victoria Harbour
Simcoe County
54/100
Elevated Risk61% data
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Coldwater
Simcoe County
53/100
Elevated Risk70% data
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Erin Mills
Peel Region
52/100
Elevated Risk21% data · directional
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Hamilton
City of Hamilton
52/100
Elevated Risk44% data · directional
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Penetanguishene
Simcoe County
51/100
Elevated Risk51% data
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Streetsville
Peel Region
50/100
Elevated Risk36% data · directional
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West Lincoln
Niagara Region
50/100
Elevated Risk69% data
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Stoney Creek
City of Hamilton
49/100
Moderate Risk44% data · directional
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Severn
Simcoe County
48/100
Moderate Risk52% data
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Welland
Niagara Region
48/100
Moderate Risk58% data
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Beaverton
Durham Region
47/100
Moderate Risk41% data · directional
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Elmvale
Simcoe County
47/100
Moderate Risk59% data
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Orillia
Simcoe County
47/100
Moderate Risk57% data
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Scugog
Durham Region
46/100
Moderate Risk49% data · directional
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Fort Erie
Niagara Region
45/100
Moderate Risk56% data
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Georgetown
Halton Region
45/100
Moderate Risk33% data · directional
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Uxbridge
Durham Region
45/100
Moderate Risk38% data · directional
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Midland
Simcoe County
44/100
Moderate Risk54% data
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Niagara Falls
Niagara Region
44/100
Moderate Risk51% data
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Niagara-on-the-Lake
Niagara Region
44/100
Moderate Risk54% data
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Tottenham
Simcoe County
43/100
Moderate Risk54% data
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Oro-Medonte
Simcoe County
42/100
Moderate Risk60% data
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Nobleton
York Region
41/100
Moderate Risk27% data · directional
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Smithville
Niagara Region
41/100
Moderate Risk74% data
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Burlington
Halton Region
40/100
Moderate Risk40% data · directional
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Caledon
Peel Region
40/100
Moderate Risk27% data · directional
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Courtice
Durham Region
40/100
Moderate Risk32% data · directional
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Essa
Simcoe County
40/100
Moderate Risk63% data
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Lincoln
Niagara Region
40/100
Moderate Risk55% data
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Springwater
Simcoe County
40/100
Moderate Risk62% data
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New Tecumseth
Simcoe County
39/100
Moderate Risk56% data
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Oshawa
Durham Region
39/100
Moderate Risk23% data · directional
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Ridgeway
Niagara Region
39/100
Moderate Risk66% data
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Caledon East
Peel Region
38/100
Moderate Risk33% data · directional
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Newmarket
York Region
38/100
Moderate Risk20% data · directional
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Palgrave
Peel Region
38/100
Moderate Risk21% data · directional
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Pelham
Niagara Region
38/100
Moderate Risk72% data
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Port Perry
Durham Region
38/100
Moderate Risk58% data
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Riverdale
City of Toronto
38/100
Moderate Risk56% data
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Georgina
York Region
37/100
Moderate Risk37% data · directional
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Holland Landing
York Region
37/100
Moderate Risk46% data · directional
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Beeton
Simcoe County
36/100
Moderate Risk64% data
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Grimsby
Niagara Region
36/100
Moderate Risk66% data
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The Beaches
City of Toronto
36/100
Moderate Risk22% data · directional
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Thorold
Niagara Region
36/100
Moderate Risk60% data
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Angus
Simcoe County
35/100
Moderate Risk70% data
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Barrie
Simcoe County
35/100
Moderate Risk40% data · directional
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Beamsville
Niagara Region
35/100
Moderate Risk68% data
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Collingwood
Simcoe County
35/100
Moderate Risk57% data
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Creemore
Simcoe County
35/100
Moderate Risk69% data
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East Gwillimbury
York Region
35/100
Moderate Risk39% data · directional
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Innisfil
Simcoe County
35/100
Moderate Risk56% data
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Ajax
Durham Region
34/100
Moderate Risk25% data · directional
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Ancaster
City of Hamilton
34/100
Moderate Risk45% data · directional
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Clarington
Durham Region
34/100
Moderate Risk34% data · directional
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Clarkson
Peel Region
34/100
Moderate Risk26% data · directional
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Malvern
City of Toronto
34/100
Moderate Risk19% data · directional
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Mississauga
Peel Region
34/100
Moderate Risk24% data · directional
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Mount Hope
City of Hamilton
34/100
Moderate Risk50% data
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Stayner
Simcoe County
34/100
Moderate Risk56% data
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Brampton
Peel Region
33/100
Moderate Risk21% data · directional
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Fonthill
Niagara Region
33/100
Moderate Risk72% data
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King
York Region
33/100
Moderate Risk35% data · directional
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Oakville
Halton Region
33/100
Moderate Risk37% data · directional
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York
City of Toronto
33/100
Moderate Risk26% data · directional
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Alcona
Simcoe County
32/100
Moderate Risk61% data
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Aurora
York Region
32/100
Moderate Risk24% data · directional
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Bradford
Simcoe County
32/100
Moderate Risk39% data · directional
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Thornhill
York Region
32/100
Moderate Risk18% data · directional
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Alliston
Simcoe County
31/100
Moderate Risk61% data
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East York
City of Toronto
31/100
Moderate Risk23% data · directional
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Wasaga Beach
Simcoe County
30/100
Moderate Risk48% data · directional
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Whitby
Durham Region
30/100
Moderate Risk25% data · directional
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Pickering
Durham Region
29/100
Moderate Risk29% data · directional
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Roncesvalles
City of Toronto
29/100
Moderate Risk15% data · directional
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Scarborough
City of Toronto
29/100
Moderate Risk18% data · directional
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Waterdown
Halton Region
29/100
Moderate Risk47% data · directional
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Whitchurch-Stouffville
York Region
29/100
Moderate Risk38% data · directional
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Milton
Halton Region
28/100
Moderate Risk35% data · directional
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Etobicoke
City of Toronto
27/100
Moderate Risk23% data · directional
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Leaside
City of Toronto
27/100
Moderate Risk26% data · directional
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Long Branch
City of Toronto
27/100
Moderate Risk26% data · directional
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North York
City of Toronto
26/100
Moderate Risk19% data · directional
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Richmond Hill
York Region
26/100
Moderate Risk23% data · directional
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Bowmanville
Durham Region
25/100
Moderate Risk36% data · directional
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King City
York Region
25/100
Moderate Risk46% data · directional
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Brooklin
Durham Region
24/100
Lower Risk32% data · directional
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Port Credit
Peel Region
24/100
Lower Risk31% data · directional
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Binbrook
City of Hamilton
22/100
Lower Risk45% data · directional
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Kleinburg
York Region
21/100
Lower Risk31% data · directional
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Markham
York Region
21/100
Lower Risk21% data · directional
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Ballantrae
York Region
20/100
Lower Risk52% data
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Newcastle
Durham Region
20/100
Lower Risk36% data · directional
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Maple
York Region
18/100
Lower Risk25% data · directional
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Vaughan
York Region
18/100
Lower Risk25% data · directional
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Unionville
York Region
10/100
Lower Risk24% data · directional
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Mimico
City of Toronto
7/100
Lower Risk24% data · directional
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What does the risk score mean?
Lower (under 25)
Mostly newer homes, with few from the eras known for wiring and plumbing problems. Still worth inspecting: every home has something.
Moderate (25–49)
A mix of eras and construction types. Aging HVAC, plumbing wear and insulation gaps are typical of homes this age.
Elevated (50–74)
More homes from older eras, where aluminum wiring, galvanized or poly-B plumbing and aging roofs turn up.
High (75+)
Mostly older stock: knob-and-tube wiring, galvanized plumbing and foundation wear are common in homes of that age.