The Sarnia mortgage market in 2026
As of 2026, the benchmark home price in Sarnia is roughly $425,000 (Ontario, population ~75k). Sarnia's petrochemical economy means shift premiums, overtime and commission income are the norm, so two-year income averaging often decides what a buyer qualifies for. Lakeshore and Bright's Grove draw move-up buyers while the core stays a first-time entry point. At that benchmark, 20% down is about $85,000, and you’d need roughly $75,000 in household income to qualify after the stress test — the greater of your contract rate + 2% or 5.25%. Put 5% down and you’re in for about $21,250 plus a default-insurance premium: a smaller cash outlay now for a slightly higher monthly payment. We model your exact Sarnia numbers — price band, down payment, and the stress test — before you ever write an offer.
