Sarnia-Lambton real estate: June market update

Chris Lewis looks at June’s sales numbers and explains why the sticker price isn’t the only cost buyers should be watching.

If you've been trying to decode the Sarnia-Lambton real estate market, here's the latest headline: June was a slower month, with buyers still holding the advantage.

Sales and Prices Remain Under Pressure

The sales-to-new-listings ratio came in at 48%, which points to a more balanced market — although conditions still favour buyers. Inventory currently sits at 3.8 months, down from previous months, showing that available homes are starting to tighten.

For homes that did sell, the average sale price was 4.3% below asking price, showing that buyers continue to have some negotiating power. The median home price was $490,000, which is down 3% compared to June 2025.

Year-to-date, the average Sarnia home price is sitting at $523,827, down 2.7% year over year but only 1.7% compared to 2023. Translation: despite the headlines, home values haven't moved dramatically. The market has adjusted, but we're not seeing a major shift in pricing.

June saw 170 home transactions, which is actually an increase of 4.9% compared to last June and up 15% from 2024 — a positive sign that buyers and sellers are becoming more active. There are currently 649 homes listed for sale, which is virtually in line with the same time last year.

Don't Let Your Dream Home Become an Energy Nightmare

When you're buying a home in Sarnia-Lambton, it's easy to fall in love with the things you can see. The renovated kitchen. The fresh paint. The new flooring. The beautiful backyard where you can picture summer evenings enjoying the breeze coming off Lake Huron.

But some of the biggest costs hiding in a home aren't necessarily visible during a showing. They show up later — every month — when the utility bills arrive.

A home may seem like a great deal because it's priced lower than comparable properties, but if it has old windows, poor insulation, an inefficient furnace, or outdated heating and cooling systems, that savings can disappear quickly. Before you fall in love with the finishes, make sure you understand what it costs to actually operate the home.

Is It a Renovation… or Just Lipstick on a Pig?

One of the biggest mistakes buyers make is getting distracted by cosmetic updates. A house with a beautiful kitchen, trendy paint colours, and modern fixtures can look move-in ready. But ask yourself: What did the seller update — and what did they leave behind?

A new backsplash is great. A new bathroom is great. But those improvements won't help much if your heat is escaping through 40-year-old windows or an under-insulated attic.

Cosmetic updates are usually the easiest improvements to tackle after you move in. Replacing windows, upgrading insulation, or replacing a furnace can be much more expensive. Sometimes the home that needs a little paint and flooring is actually the better long-term investment.

Windows: Your Home's First Defence Against Ontario Weather

Living in Sarnia means experiencing everything from humid summers along Lake Huron to cold winter winds coming across the Great Lakes. Your windows play a huge role in keeping that weather outside where it belongs.

During a showing, look for:

• Energy-efficient double or triple-pane windows
• Drafts around frames
• Condensation between glass panes
• Older original windows
• Difficulty opening or closing windows

Old windows don't just affect comfort — they can make your furnace and air conditioner work overtime.

Check What's Above, Below, and Around You

Insulation is one of the biggest factors affecting energy costs, but it's also one of the easiest things to overlook. A home might have a beautiful interior but still lose a significant amount of energy through:

• An under-insulated attic
• Poor basement insulation
• Drafty crawl spaces
• Unsealed gaps around doors, windows, and mechanical systems

A properly insulated home stays warmer in the winter, cooler in the summer, and requires less energy to maintain a comfortable temperature.

Ask for the Utility History

One of the easiest ways to understand a home's true cost is to ask for past utility bills. You may not use energy exactly like the previous owner, but the history can provide valuable insight.

Ask:

• What were the average monthly heating costs?
• Were there unusually high winter bills?
• How much did cooling cost in the summer?
• Have any efficiency upgrades been completed?

The monthly mortgage payment is only one part of owning a home. The ongoing cost of running it matters too.

Government Programs That Can Help

If you purchase a home that needs energy upgrades, there may be programs available to help reduce the cost.

Home Energy Audits
Many rebate programs require a professional home energy assessment before upgrades begin. These assessments identify where your home is losing energy and what improvements will provide the biggest impact.

Enbridge Gas Energy Efficiency Programs
Programs offered through Enbridge Gas provide incentives for upgrades such as insulation, air sealing, windows and doors, heating equipment, and other energy improvements. Eligibility and available incentives can change, so homeowners should check current program details before starting work. See if you can qualify here: https://www.homerenovationsavings.ca/

Sarnia Saves Program
Sarnia homeowners may also want to explore local energy-efficiency initiatives. The Sarnia Saves program has offered eligible residents opportunities for home energy assessments and upgrades designed to improve comfort and reduce energy use. This program is now full but keep checking back and see if they do another round next year!

Last year I took advantage of an Enbridge program and it cost around $600 to apply and then I spent $7,000 on upgrades including new insulation in my attic and windows for my basement. Once I completed the final inspection Enbridge sent a cheque for around $5500 and my utility bills are noticeably better year over year. Investing in your home and especially through an incentive program does make a long term difference!

The Bottom Line

When buying a home, don't just ask: "Can I afford the purchase price?" Ask: "Can I afford to own this home every month?"

A lower-priced home isn't always the better deal. Sometimes paying a little more for energy efficiency can save you thousands over the years.

The paint colour can change. The flooring can be replaced. The kitchen can be renovated. But every month when the utility bills arrive, you'll appreciate the home that was built — or upgraded — to keep your hard-earned money inside instead of letting it escape through the walls.

Contact Chris Lewis for follow up comments or questions.

The views and opinions expressed in this article are solely those of the author and do not necessarily reflect the views or positions of any agency, brokerage, or organization with which the author is affiliated. This content is provided for informational purposes only and should not be considered financial or legal advice.