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Jim Sullivan
REALTOR®
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Articles and Advice

Questions Buyers Should Ask About Utility Costs

Before you fall in love with a home, it's worth asking a question that often gets overlooked: What does it actually cost to live here? The purchase price is just the beginning. Monthly utility bills can vary wildly from one property to the next, and they can significantly affect how comfortable that new mortgage feels 12 months in.

What Are the Average Monthly Bills?

Start by asking the seller or their agent for 12 months of utility statements. One month doesn't tell you much. A July electric bill looks very different from a January one, and vice versa for heating costs. What you want is the full year: highs, lows, and averages. This gives you a realistic picture of what you're signing up for.

If the seller can't provide that history, contact the utility providers directly. Many will share average usage data for a specific address.

How Old Are the Major Systems?

The age and condition of the HVAC system, water heater, and insulation directly affect what you'll pay each month. An aging furnace running at 60% efficiency costs noticeably more to operate than a newer, high-efficiency model. Ask when key systems were last replaced and whether any energy-efficiency upgrades have been made. A home with updated insulation, newer windows, and a modern HVAC system will typically run more efficiently on utilities than one that hasn't been updated in several years.

Is the Home Well-Insulated?

Poor insulation is one of the most common culprits behind high utility bills. Ask whether the attic, walls, and basement have been insulated, and to what standard. You might also ask if the seller has ever had an energy audit done. If not, you can request one as part of your due diligence; it's a relatively low-cost way to spot where heat is escaping and where future savings might be found.

What's the Water Situation?

Water bills tend to fly under the radar, but they add up. Find out whether the home is on city water and sewer or a private well and septic system. Each comes with different ongoing costs. A well means no monthly water bill, but it does mean potential maintenance expenses. City water is predictable but variable based on usage. If the home has irrigation systems or a pool, factor that in; summer water costs can spike considerably.

Are There Any Known Efficiency Issues?

It's a simple question, and sellers sometimes have useful answers. Has there been an issue with drafts or rooms that never seem to warm up? Are there appliances that run constantly? Even small issues, such as a leaky water heater, an old refrigerator, or poor duct sealing, can add meaningfully to monthly costs.

Why This Matters

Understanding utility costs before you buy helps you budget accurately, negotiate more confidently, and avoid unpleasant surprises after closing. The home might check every box on your list. Make sure the monthly carrying costs do too.

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