May 11, 2006

Chronicles of Data Collection II: Non-Disclosure States

Posted by Drew Meyers, Partner Relations Associate

Categories: Zillow , data stuff

It seems many people are confused regarding what a non-disclosure state
(or county) is. Hopefully, we can set the record straight for those of you wondering.  What does the term "non-disclosure" really signify when it comes to property records? It's a tricky question given that people or companies use the term differently given that exact definitions can vary by location.

The big, big picture is that in a non-disclosure state, transaction sale prices are not available to the public.  There are two main causes for states being considered
non-disclosure:

·The first cause is that in most non-disclosure states or counties, when a real estate transaction occurs, the sale price is not required to be submitted to the county office
(this is the case in Texas and North Dakota among others).

·The second cause is that even though records are kept by a governing body, the records can not be distributed to the public.  Such is the case in New Mexico, which "is a strict nondisclosure state, information about property can only be given to the registered owner of the property."

Since we rely on public county records as our primary data source driving our Zestimate algorithms (which take comparable sales prices into account), it poses a challenge to calculate accurate Zestimates when sale prices are not available.

The following states are considered non-disclosure: Alaska, Idaho, Kansas, Louisiana, Mississippi, Missouri (some counties), Montana, New Mexico, North Dakota, Texas, Utah, and Wyoming.

If you live in any of the above states, at least you now know why we don't currently have sales records in your area.  As we improve our data and algorithms, we are continually looking for additional data sources.  Meanwhile, you can always chart how much data we have in an area by reviewing our data and accuracy table.

Drew explained why when you  see a price, it may or may not be accurate. 
If the price seems too low or too high to you (assuming you have current data),
 be wary. Call your REALTOR® for accurate up-to-date sold prices.


Here is the link: www.zillow.com
Be sure to look for "This is a Beta Site;" then click on "........data accuracy." ZILLOW
explains how it works and what its limitations are at this time. 


                      

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