Sales Ratio Studies: Make sure your GIS is doing the heavy lifting

By Billy Burle, VP Sales and Marketing

It’s been said that “if a picture is worth a thousand words, a map is worth a thousand pictures”.  I couldn’t agree more.  The power of maps and GIS is the ability to quickly visualize information to give you a greater sense of understanding and clarity about all of the data you have at your fingertips.

I could write for days regarding all of the examples related to the power of spatial visualization (that’s a fun phrase to say, isn’t it).  However, because I like you, I’m going to spare you all of my spatial ramblings and focus on just one example – sales ratio studies.

The role of a local government assessor is to ensure fair and equitable taxation for the property owners in their jurisdiction.  Essentially, like properties in the same geographic location should have similar appraised values.  Visit for a plethora of resources relating to fair and equitable taxation.

Now, let’s look at sales ratios within a specific neighborhood.  The example below shows the calculated appraisal statistics for the selected parcels. They are also sorted into various ranges and color coded as such.

Outliers shaded blue
Outliers shaded blue

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DREAMaps Online – The Analyst Tab for Appraisers

DREAMaps Tabs

The “A” in DREAMaps

There are just too many features of new DREAMaps Online to cover in one email (and chances are you don’t want an email that long anyway) so I’m going to just cover the Analyst tab.  Analyst, our most widely used product, was built for appraiser by appraisers as an easy to use GIS viewer.  Since a picture paints a thousand words, I’ll spare you a bunch of words and show you some pictures

DREAMaps Analyst

The chart above represents the appraised value vs. sale ratio deviation distribution with clickable data points that highlight those parcels on the map.  The example also shows that you can quickly color code the selected parcels based on fields such as neighborhood. Continue reading

Fair and Equitable Taxation: Why Good Data isn’t Good Enough

By Billy Burle, VP Sales and Marketing, SDS

Vince Lombardi once said “practice doesn’t make perfect, only perfect practice makes perfect”. This is one of those quotes that just sticks with you and can be applied to so many parts of our daily lives. It reminds us in work and play to step back and ask am I just practicing or am I truly perfecting what I do?

For the assessment and parcel mapping community, ensuring fair and equitable taxation for your constituents is something certainly worth perfecting, wouldn’t you agree?. Fair and EquitableTo do this there are many geospatial tools and programs you can leverage that help you take an auditing approach to ascertain the validity and reliability of your tax parcel information. To perform an audit of your real property we recommend you take multiple steps for identifying gaps or inconsistencies between graphic and non-graphic databases such as your GIS and CAMA data.

Steps to Performing a Real Property Audit™ Continue reading