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The original item was published from 2/14/2019 12:26:00 PM to 7/1/2020 12:00:06 AM.

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Posted on: November 15, 2018

[ARCHIVED] Delaware County Reassessment Project


Please be advised that Tyler Technologies has been contracted by Delaware County to provide valuation services for the 2021 countywide reassessment project. During this phase of the project, Tyler Technologies staff will be working within Radnor Township to collect current property data and confirm or verify existing county assessment property records. This occurs by visiting properties, measuring improvements, observing and noting all exterior building characteristics.  They will never ask to be invited into the home

These efforts will be conducted by Tyler Technologies employees called Data Collectors, who can be identified by their bright work vests which bear the “TYLER” name on the back and by their Delaware County issued photo ID badge. At each property, Data Collectors will knock on the door before proceeding with data collection. If an adult is home, Data Collectors will ask a series of questions relevant to the property characteristics – such as room count, basement area, type of heating/cooling, date of last remodel, etc. They will never ask to be invited into the home

From November 14, 2018 through June 2020, Data Collectors will be working in Radnor Township

Should you have any questions, please call the Tyler Technologies informational hotline at (610) 891-5695

Additional information can also be found by visiting the reassessment project website: 

Below are the names, identification pictures and vehicle information for the Data Collectors that will be in Radnor Township.  

Please remember they will never ask to be invited into the home

This is what the Data Collectors Identification Badge should look like:


These are the Data Collectors that will be working in Radnor Township:FIELD CREWWhat Are the Steps in Reassessment?

Step 1: Verify and Collect Information for Your Property 

The project will utilize Tyler's appraisal and street imaging services. Tyler will photograph properties from inside white vans which will be clearly marked. The images will only be taken from the street and Tyler staff will not enter private property. These images, along with existing county data will be used to verify and correct your property data. 

Approximately 20% of all improved properties will be visited by a data collector in order to correct any errors found during the verification process. The data collector will measure the outside of all structures on the property. 

If the property owner is not home to provide interior and other information, the data collector estimates the inside features based on similar properties in the neighborhood and existing assessment records.

Step 2: Check the Information 

By mid summer 2019, all property owners will have received a data mailer in the mail. The data mailer provides information that was recorded for his or her property. Property owners will be asked to review this information for accuracy and to report any errors to Tyler. 

The County is working to keep the revaluation process as open as possible. There are no secrets in the method of placing a value on property. The data mailer is one positive way of including property owners in the process.

Step 3: Research Market & Costs 

The goal of the reassessment project is to estimate "fair market value" for all of the residential, exempt, and commercial properties in Delaware County. Tyler analyzes local property sales, rental income information, building costs, and other valuation factors to estimate values for each property. 

Property valuation analysts conducted a number of studies to understand what affects the real estate market in the area. 

The process began with collecting and verifying dates and sales prices for all property sales within an approximate two to three-year period. 

Sales that are not "arms length" or are nonrepresentative of the area are noted and set aside. 

Valid sales will be analyzed and mathematical models of market activity will be created. These models will then be tested to establish how effective they would be in estimating the value of similar unsold properties. 

For each residence that is valued, three to five recent sales of similar properties will be considered as part of the valuation process. 

The second method used for estimating market value is called the "income approach." With this method the income and expense stream of a property is examined from an investor’s point of view. The goal is to achieve a market value estimate by estimating what an informed investor would pay for the income stream associated with a particular piece of real estate. The income approach was applied to commercial properties such as apartments, restaurants, shopping plazas and the like. 

The third method for estimating probable selling price is to consider how much it would cost to provide a replacement building of similar condition and utility. Local construction costs are analyzed along with land sales to develop what is called the "replacement cost" method. The idea is that if land value is added to what it would cost to replace the building, less a loss in value due to condition, a rational estimate of market value can be obtained. Again, a mathematical model of this process is developed and calibrated to market activity in Delaware County. The so-called "cost approach" is usually a backup or reference computed for all taxable classes of property and is the default value for exempts. It is used when neither the direct market comparison nor the income approaches are considered reliable for a given property.

Step 4: Determine Values 

Qualified appraisers will review each value calculation along with a photo of the property. In the case of residential properties, the appraiser will see photos of the selected comparable sale properties used to help establish the value estimate. The appraiser considers the information calculated from the market models and computer analyses and determines a final value estimate. 

After all of the computer-assisted research is done, the reviewers go back to the neighborhoods to compare the values and property information and to make sure the correct values are assigned to each property. Any necessary corrections are entered into the computer system to be sure all of the records were accurate. In summary, the computer is a tool, but appraisers set value.

Step 5: Mail Notices and Schedule Informal Review Meetings 

Early in 2020, property owners will receive a notice of the new tentative appraised value. The property owners are encouraged to evaluate whether the assessment appears to be reasonable. If it is, no further action is required. If it is believed that the proposed value is not an accurate appraisal of market value, instructions will be provided with the notice on how to arrange an informal review of the value with Tyler. These reviews give the property owner a simple and efficient means for resolving any discrepancies. 

Step 6: If Necessary, File a Formal Appeal 

If property owners are not satisfied with the results of the informal review or if they do not schedule an informal review, they will be able to appeal to the Board of Assessment Appeals.


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