How AI Missed My Westminster Listing by $100,000

By Nick Kellar

Nick Kellar is a dedicated real estate consultant, investor, and community steward serving Baltimore and the surrounding areas.

Any fans of The Office will get this one. I basically wanted to run the Dwight versus the computer experiment, but with real estate pricing. With AI becoming more mainstream and online home valuation tools everywhere, I figured, why not put ChatGPT to the test on a real listing I was about to bring to market and see how it stacked up against my own process?

The property was 158 Federal Ann Court in Westminster, Maryland. About 1,800 to 1,900 square feet above grade, completely updated throughout, kitchen, baths, flooring, paint, and finished basement. HVAC is about 5 years old, roof is around six to seven. It hadn’t been on the market since 2021, so there was no recent online footprint to lean on, which put AI in the same position I was in. Level playing field.

I gave ChatGPT the exact same details I was working with and asked how it would price the home based on current market conditions and consumer sentiment. That matters because pricing a home isn't just pulling up the closest sale on Zillow. Real pricing involves psychology, market behavior, strategy, timing, and data, all working together.

The gravity zone and three strategies. AI started by looking at the broader Westminster market to figure out where homes of this size and style were generally trading. Then it pulled recent sales, homes in the low to mid-$400s for average conditions, and properties approaching or crossing $500,000 for updated or premium homes. I actually liked that it didn’t just throw out one number. Instead, it built three distinct pricing strategies with reasoning behind each one.

Its low range was set at $459,000 to $469,000 to create urgency and drive competition. Its sweet spot was $474,000 to $489,000, where it said buyers would feel comfortable moving forward without hesitation. And its high range was $495,000 to $515,000, which it flagged as testing the ceiling with the risk of slower activity.

I gave it no direction during this process because I wanted to see what a regular homeowner would get if they asked AI this same question on their own.

What impressed me. AI understood something a lot of people miss. Market value isn’t just what somebody could possibly pay. It’s where buyers emotionally say yes with the least friction. When market intention meets market reality, that’s the sweet spot. And the wrong price doesn’t just affect value; it affects the energy of the entire process, the experience, and whether you walk away from the deal feeling good about it.

Where the whole thing fell apart. My own process starts at the 10,000-foot view and works down to ground level, testing from multiple angles to find where a home’s true market value sits. I came in at $575,000 to $590,000. The sellers listed it at $585,000. We got multiple offers and sold for $615,000 with seller-friendly terms across the board.

Even on its most aggressive estimate, AI was off by $100,000.

So would I trust AI to price a home? Hell no. Not blindly. It still can’t read the feel of a neighborhood or pick up on the week-to-week shifts in buyer behavior that you only understand by being out there talking to people. It doesn’t account for emotional appeal or why one block in a neighborhood pulls stronger than another. Those are the things that actually move the needle on price, and no algorithm is picking them up yet.

AI is a fascinating tool, and the logic genuinely impressed me, but it’s just a tool. It’s not a guide. It’s not a consultant. If you’re curious about what your home is worth right now, whether you’re thinking about selling, refinancing, or you just want to know, online estimators and AI can give you a starting point. But that starting point can be way off.

Send me your address, and I’ll show you what the real data looks like, how buyers are behaving in your area, and where your home fits strategically. That’s the kind of information that helps you make the right call, no matter your goal. Call or text me at 443-375-2224, email me at nick@storyline-homes.com, or visit blog.storyline-homes.com.