A comparative market analysis, or CMA, is a REALTOR®’s evidence-based estimate of a home’s value, built by comparing it to similar homes that have recently sold, are currently listed, or failed to sell in the same area. Unlike an online estimate, a CMA is prepared by a person who has looked at the actual comparable sales and adjusted for the specific home’s condition, features, and location — which is why it’s the standard tool for setting an accurate list price. This page explains exactly how one is built and how to read the result.
Building a reliable CMA takes more than pulling recent sales — it takes judgment about which comparables genuinely apply and how much each difference is worth. Jason Polonski has prepared comparative market analyses across Ottawa’s west end for 15+ years, drawing on a background in construction, finance, and the trades to interpret what the numbers actually mean for a specific home. For a CMA on a specific property, call or text Jason at (613) 601-9333 or request a free home evaluation. For the broader picture on home value, start with what’s my home worth in Ottawa.
A CMA starts by identifying “comps” — homes that closely match the subject property in size, age, style, lot, and location — and then adjusts the value up or down for meaningful differences between them. A finished basement, an updated kitchen, a premium lot, or an aging roof can each shift a comp’s price relative to the home being valued. The result isn’t a single guessed number; it’s a defensible price range grounded in what has actually happened in the market.
A thorough CMA draws on three categories of data, each telling a different part of the story.
| Comparable type | What it shows | Reliability |
|---|---|---|
| Recently sold homes | What buyers actually paid | Highest — the truest signal of value |
| Active listings | What current competition is asking | Medium — shows demand, not confirmed value |
| Expired or withdrawn listings | Where the market rejected a price | Useful for finding the ceiling |
Sold homes carry the most weight because they represent completed transactions, not hopes or asking prices. Active listings, visible on REALTOR.ca, show what a home is competing against right now, and expired listings reveal where pricing went wrong for other sellers — a useful warning sign.
Beyond the comps themselves, a proper CMA weighs several layers of detail: location and lot characteristics, size and layout, bedroom and bathroom count, the age and condition of major systems, upgrades and unique features, and current market timing — including how many days similar homes are taking to sell and how much inventory is competing for buyers. Local knowledge adds real value here: recognizing an updated electrical panel, a structurally sound addition, or a lot backing onto greenspace can shift a number meaningfully, which is where Jason’s trades background sharpens the analysis beyond what the raw data alone would suggest. The Appraisal Institute of Canada makes a similar point about professional valuation: trained judgment consistently outperforms data alone.
Ottawa isn’t one market — it’s a collection of micro-markets, and a citywide average says very little about what a specific home is worth. Kanata, Stittsville, Barrhaven, Westboro, and the Glebe all move somewhat independently, and even within a single neighbourhood, a lot backing onto a park or proximity to a top-rated school can shift value noticeably. A home’s true worth lives at the street level, which is exactly what a CMA is built to isolate — a citywide number from the Ottawa Real Estate Board or Canadian Real Estate Association is a useful backdrop, but never a substitute for a comparison against homes on the same or a similar street.
These three tools answer different questions, and confusing them leads to mispricing. A CMA sets a competitive list or offer price and is prepared free by a REALTOR®. A formal appraisal, usually ordered by a lender, confirms value for financing and tends to be more conservative. An online estimate gives a quick, low-reliability ballpark that can’t see a home’s condition or the nuance of its specific street. The full breakdown of appraisals specifically is on how to prepare for a home appraisal, which covers that formal lender process in depth.
A CMA doesn’t produce one magic number — it produces a defensible range, and where a seller positions within that range is a strategic decision. Pricing too high causes a listing to sit and grow stale, training buyers to skip it; pricing too low leaves money on the table. Depending on conditions, that might mean pricing slightly below the comps to spark competing offers, or pricing at the top of the range when inventory is tight and demand is strong. Because market conditions shift, a CMA is a snapshot in time — in an active market, it’s worth refreshing before finalizing a list price, using current data from the Bank of Canada rate environment and local absorption trends as context.
Once a CMA points to your likely sale price, estimate what you’ll actually keep with the Ontario realtor commission calculator.
A CMA is useful at several points beyond just listing day. It’s worth requesting months before a planned sale to identify which improvements are worth making before going to market — see how to increase your home value. Move-up buyers benefit from a CMA on both their current home and any target property, since both sides of the move affect the plan. A CMA is also valuable before submitting a competitive offer as a buyer, and when assessing home equity ahead of a renovation or refinance — the Financial Consumer Agency of Canada, Government of Ontario, and Canada Mortgage and Housing Corporation all offer background on how home equity and financing intersect.
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Joe Ireland8 days agoTrustindex verifies that the original source of the review is Google.
Jason helped me buy my first home. He was extremely responsive and available from our very first call, and assisted with booking multiple viewings across Ottawa. He was punctual to every viewing and honest with his feedback with the homes we saw, and when it came time to go from viewing to buying, he had an impressive array of contacts from brokers to inspectors to lawyers, all with excellent reviews and who were great to work with in their own right. As a first-time home buyer, his responsiveness and patience with many questions were extremely reassuring and really streamlined the process, and I signed an offer on my home within just 2 weeks of meeting him. I would strongly recommend Jason to anyone buying a home in Ottawa, especially to those who are strangers to the process like I was. Thank you again, Jason!Posted on Google![]()
Marina38 days agoTrustindex verifies that the original source of the review is Google.
We had a wonderful experience working with our realtor - Jason Polonski. He is a professional, knowledgeable, responsive, and truly attentive to our needs. Jason guided us through every step of the process, answered all of our questions. My family are very grateful for his work and would absolutely recommend him to anyone looking for a reliable and trustworthy realtor in Ottawa and around !Posted on Google![]()
Vatrul “Vatrul”42 days agoTrustindex verifies that the original source of the review is Google.
First time home seller. Every process of the journey was explained and laid out perfectly.. Very highly recommended.. thank you Jason..Posted on Google![]()
Olga V.43 days agoTrustindex verifies that the original source of the review is Google.
Jason is very knowledgeable realtor in Kanata. He’s been always good beyond to help his clients. We had a place experience buying a house in Kanata. I highly recommend him.Posted on Google![]()
Yuri Tsouker50 days agoTrustindex verifies that the original source of the review is Google.
Working with Jason on the sale of my property was genuinely one of the smoothest professional experiences I've had. He was responsive at every step, patient with every question (and I had many), and he clearly knew the local market inside and out. My sale wasn't a simple one — there was a tenant, a rental water heater, a plumber to coordinate, and plenty of complications that made this a genuinely difficult case. Jason handled all of it with calm, practical advice and always got back to me quickly, often with a solution before I even finished asking about the problem. What stood out most was his honesty. He didn't push, he didn't overpromise, and every recommendation he made turned out to be exactly right. I felt like I had a professional in my corner from day one. If you're looking for a realtor who is knowledgeable, responsive, and genuinely trustworthy, I can't recommend Jason highly enough. Thank you, Jason — much appreciated!Posted on Google![]()
Denis Pepin74 days agoTrustindex verifies that the original source of the review is Google.
Outstanding Experience with Jason Polonski! Last May, my wife and I sold our home in Stittsville with Jason Polonski, and we couldn't be happier with our decision. Jason made the entire process remarkably smooth and stress-free. From day one, Jason stood out for his exceptional communication. He was always prompt and available to answer our queries—often within minutes—no matter the time of day. Whenever we had questions regarding paperwork, listing strategies, or handling property details, he addressed every concern with a truly genuine, human touch. What impressed us most was how proactive and reassuring he was at every step. When we had to coordinate the buyout of our water heater rental, Jason handled the reimbursement seamlessly, reassuring us with, "We should have a smooth sale now. :)"—and it truly was! Even post-closing, when we needed to arrange delivery for mailbox keys or track down final funds from head office, Jason stayed on top of every detail, putting a rush on things and constantly keeping us updated. Jason is a dedicated, attentive, and highly professional realtor who genuinely cares about his clients. It has been an absolute pleasure working with him, and we highly recommend Jason Polonski to anyone looking to buy or sell a home in the Ottawa region.Posted on Google![]()
Tammy Puhakka83 days agoTrustindex verifies that the original source of the review is Google.
I highly recommend Jason Polonski, a realtor in Kanata, Ottawa. He truly went above and beyond for me. During a long weekend, he called me and, within just two hours, had an offer to purchase prepared and sent so I could secure the home I had found and fallen in love with. Jason was professional, efficient, knowledgeable, and incredibly pleasant to work with. His rates are very reasonable, and his dedication to his clients is outstanding. If you’re looking for fast, reliable, and friendly service, I would absolutely recommend contacting him.❤️Posted on Google![]()
Joe Melindy88 days agoTrustindex verifies that the original source of the review is Google.
Everything went smoothly. Jason is very good at what he does. Would highly recommend. Thanks Jason 😊Posted on Google![]()
Julianne Robert123 days agoTrustindex verifies that the original source of the review is Google.
Jason recently helped me and my family find a home and we were extremely happy with our experience. He did everything he could to secure us the best property, was always readily available and had a lot of knowledge on the house buying process. My family would highly recommend him.Posted on Google![]()
Shawnae Flieler125 days agoTrustindex verifies that the original source of the review is Google.
Buying our first home was a huge milestone for us, and we genuinely couldn't have asked for a better person to guide us through it than Jason. From day one, he made the entire process feel so much less overwhelming. What could have been a stressful experience was instead exciting, enjoyable, and honestly a lot of fun. He has a great sense of humour and a way of keeping things light when needed, while still being incredibly thorough and professional. One of the things we appreciated most was how much he genuinely cared about finding us the right home. He wasn't just trying to help us buy a house, he wanted to make sure we were making a good decision. He took the time to point out things we never would have noticed ourselves, shared insights about the homes we viewed, and was always looking out for potential issues that could become headaches down the road. It was obvious that he wanted us to end up somewhere we'd be truly happy, not just somewhere that checked a box. He also listened. Every preference, every must-have, every little detail we mentioned along the way was remembered and taken into consideration. We never felt pressured, rushed, or like we were compromising on what mattered to us. On top of that, he was incredibly responsive and always on the ball. Whether it was answering a last-minute question, booking a showing, or helping us navigate the next step, he was always there when we needed him. We felt supported every step of the way, and that's not something we'll forget. If you're looking for a realtor who is knowledgeable, honest, hardworking, and genuinely invested in his clients, we can't recommend Jason enough. We are so grateful for everything he did to help us find our home.
The quality of a CMA depends entirely on the comparables chosen and the judgment applied to the adjustments — which is exactly where an experienced local agent earns their value. With 15+ years preparing comparative market analyses across Ottawa’s west end, a background in construction, finance, and the trades, and recognition on the Best in Ottawa Top REALTOR® list seven years running, Jason Polonski builds each CMA on evidence, not guesswork, and walks sellers through what the numbers actually mean.
His results and client reviews are on his Google Business Profile. To request a CMA for a specific home, call or text Jason at (613) 601-9333, request a free home evaluation, or explore the full guide to selling your house in Ottawa.
Related guides: what your home is worth · home appraisal vs market value · what determines your home’s value · why overpricing costs you · about Jason Polonski · his Google reviews
A CMA is a REALTOR®’s estimate of a home’s value, built by comparing it to similar homes that have recently sold, are currently listed, or have failed to sell nearby, then adjusting for differences in size, condition, and features. The result is a defensible price range grounded in real market data.
No. A CMA is prepared by a REALTOR® to set a competitive price, typically free of charge, while an appraisal is usually ordered by a lender to confirm value for financing and carries a fee. They often produce similar but not identical numbers, since they serve different purposes.
A well-prepared CMA built on genuinely comparable, recently sold homes is highly reliable for setting a list price. Accuracy depends heavily on the quality of the comparables chosen and the skill applied to the adjustments, which is why local experience matters.
Most REALTORS, including Jason Polonski, provide a comparative market analysis free of charge as part of their service to buyers and sellers.
In an active market, pricing conditions can shift within weeks, so a CMA used to set a list price should be current. Homeowners simply tracking their equity over time can refresh it less frequently, such as seasonally.
Buyers benefit from a CMA too. It helps ground an offer in real comparable sales rather than emotion or the list price alone, which is especially useful in a competitive, multiple-offer situation.