How to Use Zillow to Determine Your Home Value
How to Use Zillow to Determine Your Home Value

How to Use Zillow to Determine Your Home Value

Zillow’s popular Zestimate® tool is a helpful tool to start pricing your home, but to understand your home’s value you really need to use Zillow like the pros do.

Most real estate agents use the MLS, but the same methods of finding home values can be used on the real estate sites, albeit with information that lags a bit.


The main flaw with the Zestimate® algorithms is that it does not know the condition of the nearby sales and listings. It’s a handy tool but when selling the most expensive thing you own, you probably want to be a little more accurate.


So we’re going to teach you how to be better than Zillow, keeping in mind that determining a home’s projected price range is an art, not a science.


If your house is more than 20 years old and you have never replaced the roof, water heater, HVAC, plumbing, or electrical, your buyers may need to do these repairs and they will deduct these costs from their offers.


The same goes for cosmetic items such as flooring, paint, kitchen/baths and landscaping. Keep this in mind as we go further along.

What is my home worth?

The goal of this exercise is to find the most recent and similar sales to compare your home with. That will give us the best understanding of what someone might pay for


If your house is in bad shape you may not find accurate comps. It is important to be honest about the condition of your home.


your home. Then we can compare homes that are currently listed for sale.


For this post I chose the first house listed in our city and re-entered that address on the home page. You can type in your own address or 308 Vineyard Dr, San Jose, CA to follow along.


Disclaimer: We are only using public data pulled right from the Zillow listing; there is no private information being shared.



Type in your address on the home page

The search bar is set to show homes currently listed for sale, but we want to look at recent sales instead.

The key objective information on our example home is as follows:

  • 3 beds
  • 2 baths
  • 1,308 square feet of living space


  • 6,098 lot size
  • 2-car garage
  • Built in 1970

You always want to factor in additional subjective features or issues with a property, and be honest about them.

  • Location (proximity to shopping, freeways, jobs, etc)
  • School district
  • Condition of home
  • Yard (size and condition)



This home is adjacent to a golf course (good) and near the hills (also good), but somewhat far from jobs and buyers might be turned off by a heavy commute (not good).




Schools are rated on a scale of 1-10 with 10 being the highest. You can see here that the schools near our example home are pretty good.


School Ratings



The condition of this home is average for the area. Take note of my qualifier “for the area.” The finishes in this house may be very nice for where you live, or just average.


For San Jose I can tell you that this is an average finish. The owner replaced the counter tops and flooring, the yard is well-kept, there are newer appliances, and crown molding in the living area.


On the downside, some rooms could use new paint and the bathrooms are somewhat outdated. Some buyers are fine with the condition of this house, since it is very “liveable,” but the purpose of pointing these things out is to help you start thinking like buyers, not sellers.


Let’s “Comp” it

So now that we’re familiar with the home we’re selling, let’s begin to “comp” it, which means to look at comparable sales, aka “comps.”

Going back to our objective criteria above, we want to set Zillow’s filters as closely as possible to those parameters. We’ll first look at the results, then loosen up the parameters slightly to include more homes.

  • 3 beds
  • 2 baths
  • 1,308 square feet of living space


  • 6,098 lot size
  • 2-car garage
  • Built in 1970

Using the Zillow toolbar, we’ll make the following changes:


1. Listing Type: Undo check boxes for For Sale and Potential Listings, and check the box for Recently Sold.


2. Price Range: This house isn’t technically listed for sale, but the owner appears willing to sell if someone offers $815,000. We’ll pretend that is the listing price and we’ll change the price range setting to $700,000 minimum and $900,000 maximum.


3. Bedrooms: Since 3 bedrooms is a very common floorplan, there’s no need to include anything smaller. Let’s leave the filter at 3+. One downside of Zillow is that you cannot set a maximum bedroom count. This is a feature that Redfin has.


4. Home Type: Leave it checked for “Houses” if yours is a house. If it’s a condo or townhome, leave both of those types checked. If it’s a manufactured or mobile home, leave only that type checked.


5. “More” section


6. For properties with 2 bathrooms I like to set it at 1.5+.


7. For Square Footage, if your property is smaller or larger than the average, start with tight filters. For example, if your house is 1,000 sq ft, set the filter for 900-1,100 sq ft to start with. We can relax these later on. For average sized homes for your area, give it about a 200 sq ft range below and above your home’s size.


8. For Lot Size, similar rules apply as with square footage. If your home is uniquely large or small, set the filters accordingly. Our lot on Vineyard Dr (6,098 sq ft) is average for the area, so I will set the minimum lot size as 4,000.


9. For Year Built I will set the parameters 10 years older and 10 years newer than our property.


10. Days on Zillow: the best comps are the most recent ones, but we’ll use 90 days to get a thorough picture. Ask yourself if anything has happened in the last 90 days in your market to warrant a shorter time frame. If so, use 30 days.


11. Hit “Apply”


You may see a screen like this, saying “No Matching Results.”

That’s okay; just use your mouse to scroll back on the map until you start seeing a few yellow dots.

If you do not see any results in your subdivision, loosen up the home settings and the geography bit by bit until you get results. Comps are best if they are within 0.25 miles. 


Notice there is only one yellow dot nearby our house on Vineyard Dr (the red star). There are many more clustered to the top left of the map, but we want to look at the one closest first. Click on the dot for $755k.


Important: pick the best comps. If there are multiple properties near yours, take a quick glance at each of them and weed out the ones that aren’t similar to yours first. Take three of four of the best comps then do the side-by-side-analysis.


Side-By-Side Analysis

This comp sold two months ago, is 15% smaller, has the same size garage, is built the same year, the lot size is 8% smaller and it has the same bedroom/bath count. Those are the objective findings; let’s now look at the subjective info:


  • Similar yard
  • 175 sq ft patio room addition that was permitted but does not have heat
  • Kitchen and bathrooms need updating
  • Similar hardwood flooring and paint
  • Schools:


School Ratings for the comp


Both houses are within the subdivision, have decent curb appeal, and are not on a main street. Key information missing from this analysis is the actual street view and neighborhood comparison. You need to take into account if your street is more or less desirable than any you are comparing it to.


Things to consider when comparing streets:

  • Heavier traffic
  • Wider streets
  • Walking distance to schools
  • Condition of streets


  • Cul-de-sac
  • Curb Appeal
  • Corner lot
  • Nicer/newer homes

For simplicity, we’ll say that this comp and our house on Vineyard Dr. have identical neighborhood factors. We’re also leaving out the analysis of price-per square foot.


Now we need to analyze and make an opinion on where our house stands compared to this comp.


It is reasonable to assume that our house could sell for slightly more than the comp, but $60,000 more (8%) may be a stretch.

Wash, Rinse, Repeat

We need to look at a few more sales and determine which ones are the most similar, then repeat the analysis. After doing that, you should have a good idea of what price range is reasonable for your house.


You can also change the “Recently Sold” check box to look at “For Sale” homes but keep in mind that listed prices can be inaccurate as some people are advised to list the price lower or higher than it may sell for.


So that’s it! If you need help determining your home’s value, please contact us. If you have already done the legwork and are ready to sell, let us know. We can buy your house in less than two weeks and save you the headache of doing repairs or waiting for buyers to close. Just fill out the form below or call us at (877) 210-6460.

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Jake Knight

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Jake Knight

Jake Knight has been a residential real estate investor since 2016. He specializes in acquiring and renovating houses in the Bay Area, Sacramento, eventually expanding to over 15+ states. Jake’s prior experience in lending, going back to 2003, laid the foundation for solving complex real estate issues.

Drawing upon his background in assisting sellers with the task of transitioning from a home they have lived in for decades, Jake launched a “senior move management” business in 2021. This company provides valuable support to seniors during the process of packing, coordinating their moves, and downsizing as they transition into senior living communities.

In 2022, Jake expanded his services by becoming a licensed real estate agent in California, providing comprehensive solutions to his seller clients.

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On the other hand, there are some sellers who need a custom solution due to either the property’s condition or the seller’s personal situation, or a combination of the two.

When the property is in really bad shape, they’re likely going to sell to an investor, so it may make sense to save money on commissions and find their own investor.

Some examples of personal situations that we can help with are: hoarding, pre-foreclosure or other financial issues that require a fast home sale, house with non-paying tenants or squatters, severely delinquent property taxes, homeowners who want to rent back the home longer than normal, or sellers who value privacy and/or are embarrassed by their home.

If your seller lead meets these criteria, you should propose the idea of making an introduction to me. You can simply suggest to them that your partner or colleague buys houses and ask if they are interested in speaking with me. Remember, you are not performing real estate agent duties. See our disclaimer below. The main thing to keep in mind at this point is to qualify them as a good fit or not. I can help you with the documentation and process things.