# Data dictionary

<table><thead><tr><th width="45.83331298828125">#</th><th width="190.33331298828125">Column Name</th><th width="312.333251953125">Column Description</th><th>Data Format</th><th width="232.3333740234375">Data Source</th><th width="141.5">Update Frequency</th><th width="227.1666259765625">Sample Data</th><th data-hidden>Key (Y/N)</th></tr></thead><tbody><tr><td>1</td><td>parid</td><td>parcel id</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>029042  00037</td><td>PRIMARY</td></tr><tr><td>2</td><td>parid_key</td><td>standardized parcel id that formats parid consistently across agencies</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>02904200000370</td><td>PRIMARY</td></tr><tr><td>3</td><td>taxyr</td><td>Assessor tax year</td><td>integer</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>2025</td><td>FOREIGN</td></tr><tr><td>4</td><td>address</td><td>parcel street address</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>2232 ZANONE AVE</td><td>FOREIGN</td></tr><tr><td>5</td><td>addr_num</td><td>parcel street address number, used for zooming in on parcels</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>2232</td><td></td></tr><tr><td>6</td><td>city</td><td>parcel city</td><td>string</td><td>Assessor Certified Roll - Legal</td><td>yearly</td><td>MEMPHIS</td><td></td></tr><tr><td>7</td><td>state</td><td>parcel state</td><td>string</td><td>derived in script (all Shelby County properties are located in Tennessee)</td><td>yearly</td><td>TN</td><td></td></tr><tr><td>8</td><td>parzip</td><td>parcel zipcode</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>38114</td><td></td></tr><tr><td>9</td><td>year_built</td><td>year structure built</td><td>integer</td><td>Assessor Certified Roll - Dwellings &#x26; Commercial</td><td>yearly</td><td>null</td><td></td></tr><tr><td>10</td><td>dwel_sfla</td><td>square footage of dwelling area</td><td>integer</td><td>Assessor Certified Roll - Dwellings</td><td>yearly</td><td>null</td><td></td></tr><tr><td>11</td><td>propclass</td><td>property class code defined by its use, e.g. residential, industrial, commercial, farm, exempt</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>R</td><td></td></tr><tr><td>12</td><td>propclassdesc</td><td>human readable description of property class code defined by its use, e.g. residential, industrial, commercial, farm, exempt</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>RESIDENTIAL</td><td></td></tr><tr><td>13</td><td>prop_luc</td><td>numerical code designating specific use of land according to professional standards and contains detailed categories such as single and multi-family dwellings, offices, agricultural land etc.; assists planners with analyzing land use patterns and change</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>0</td><td></td></tr><tr><td>14</td><td>prop_lucdesc</td><td>human readable description of land use codes</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>VACANTLAND</td><td></td></tr><tr><td>15</td><td>land_use_category</td><td>land use category is a broader categorization of land use codes to simplify analysis </td><td>string</td><td>Transformation using Assessor Certified Roll - Property</td><td>yearly</td><td>Vacant Land</td><td></td></tr><tr><td>16</td><td>living_units</td><td>total living units for property whether it is a dwelling or an apartment</td><td>integer</td><td>Assessor Certified Roll - Property, Commerical</td><td>yearly</td><td>1</td><td></td></tr><tr><td>17</td><td>living_units_category</td><td>total living units categorized:<br>0 units, 1 unit, 2 units, 3-4 units, 5-12 units, 13-49 units, 50-149 units, 150-249 units, 250+ units</td><td>string</td><td>Assessor Certified Roll - Property, Commerical</td><td>yearly</td><td>5-12 units</td><td></td></tr><tr><td>18</td><td>zon_code</td><td>codes used to identify the use allowed in a physical geographic area; designed to promote the health, safety, and welfare of the public by regulating land use and development</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>RU-1</td><td></td></tr><tr><td>19</td><td>zon_code_desc</td><td>human readable description of zoning code</td><td>string</td><td>Assessor Certified Roll - Property</td><td>yearly</td><td>RESIDENTIALURBAN1</td><td></td></tr><tr><td>20</td><td>acres</td><td>total acres of parcel</td><td>decimal</td><td>Assessor Certified Roll - Legal</td><td>yearly</td><td>0.14</td><td></td></tr><tr><td>21</td><td>lot_dim</td><td>lot dimensions of parcel </td><td>string</td><td>Assessor Certified Roll - Legal</td><td>yearly</td><td>50 X 125</td><td></td></tr><tr><td>22</td><td>legal_subdiv</td><td>legal subdivision of property</td><td>string</td><td>Assessor Certified Roll - Legal</td><td>yearly</td><td>PARK AVE HTS</td><td></td></tr><tr><td>23</td><td>total_assessment</td><td>total tax assessed as a percentage of the parcel's appraisal value based on land and structures </td><td>integer</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>1125</td><td></td></tr><tr><td>24</td><td>total_assmt_per_acre</td><td>total assessed value divided by total acreage of the parcel</td><td>decimal</td><td>Assessor Certified Roll - Assessment, Legal</td><td>yearly</td><td>10.05</td><td></td></tr><tr><td>25</td><td>land_assessment</td><td>assessed value of just the land</td><td>integer</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>125</td><td></td></tr><tr><td>26</td><td>land_assmt_per_acre</td><td>assessed value of just the land divided by total acreage of the parcel</td><td>decimal</td><td>Assessor Certified Roll - Assessment, Legal</td><td>yearly</td><td>1.05</td><td></td></tr><tr><td>27</td><td>building_assessment</td><td>assessed value of just the building/structures</td><td>integer</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>1000</td><td></td></tr><tr><td>22</td><td>total_appraisal</td><td>total appraised value of property based on land and structures</td><td>integer</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>4500</td><td></td></tr><tr><td>23</td><td>change_in_value</td><td>percent change in appraised property from prior tax year to current tax year</td><td>decimal</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>80</td><td></td></tr><tr><td>24</td><td>change_in_assmnt_10year</td><td>change in assessed value over the past 10 years</td><td>decimal</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>1000.00</td><td></td></tr><tr><td>25</td><td>change_in_asmtland_10year</td><td>change in assessed value (land only) over the past 10 years</td><td>decimal</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>500.00</td><td></td></tr><tr><td>26</td><td>change_in_asmtbldg_10year</td><td>change in assessed value (building only) over the past 10 years</td><td>decimal</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>500.00</td><td></td></tr><tr><td>27</td><td>valuation_data_last_modified</td><td>most recent date the Assessor's Assessment table was updated</td><td>timestamp</td><td>Assessor Certified Roll - Assessment</td><td>yearly</td><td>2020-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>28</td><td>most_recent_sale</td><td>date of most recent property sale recorded for the parcel</td><td>timestamp</td><td>Assessor Certified Roll - Sale</td><td>yearly</td><td>2020-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>29</td><td>most_recent_sale_price</td><td>sale price of most recent property sale recorded for the parcel</td><td>decimal</td><td>Assessor Certified Roll - Sale</td><td>yearly</td><td>400214.00</td><td></td></tr><tr><td>30</td><td>months_since_last_sold</td><td>number of months since the most recent property sale recorded for the parcel</td><td>integer</td><td>Assessor Certified Roll - Sale</td><td>yearly</td><td>48</td><td></td></tr><tr><td>31</td><td>sales_1yr</td><td>total aggregate sales of the parcel in last 12 months from sale_data_last_modified_date</td><td>integer</td><td>Assessor Certified Roll - Sale</td><td>yearly</td><td>0</td><td></td></tr><tr><td>32</td><td>sales_5yr</td><td>total aggregate sales of the parcel in the last five years from sale_data_last_modified_date</td><td>integer</td><td>Assessor Certified Roll - Sale</td><td>yearly</td><td>1</td><td></td></tr><tr><td>33</td><td>total_sales</td><td>total aggregate of all recorded sales of the parcel property between 1757 and latest tax year. </td><td>integer</td><td>Assessor Certified Roll - Sale</td><td>yearly</td><td>5</td><td></td></tr><tr><td>34</td><td>sales_data_last_modified</td><td>most recent date the Assessor's Sale table was updated</td><td>timestamp</td><td>Assessor Certified Roll - Sale</td><td>yearly</td><td>2020-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>35</td><td>occupancy_status</td><td>occupancy status of property - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>USPS Vacancy</td><td>yearly</td><td>Vacant</td><td></td></tr><tr><td>36</td><td>vacant_since</td><td>date of earliest recorded vacancy - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>date</td><td>USPS Vacancy</td><td>quarterly</td><td>4/1/2024</td><td></td></tr><tr><td>37</td><td>months_vacant</td><td>number of months since last recorded vacancy - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>double</td><td>USPS Vacancy</td><td>quarterly</td><td>16</td><td></td></tr><tr><td>38</td><td>long_term_vacancy</td><td>long term vacancy - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>USPS Vacancy</td><td>quarterly</td><td>Long Term Vacant</td><td></td></tr><tr><td>39</td><td>occupancy_data_last_modified</td><td>most recent date the USPS Vacancy data table was updated</td><td>timestamp</td><td>USPS Vacancy</td><td>quarterly</td><td>2025-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>40</td><td>eviction_filing_date</td><td>date of most recent eviction filed - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>timestamp</td><td>General Sessions Court Eviction Filings</td><td>monthly</td><td>2020-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>41</td><td>evictions_6mo</td><td>total evictions over 6 months from eviction_data_last_modified_date - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>integer</td><td>General Sessions Court Eviction Filings</td><td>monthly</td><td>0</td><td></td></tr><tr><td>42</td><td>evictions_1yr</td><td>total evictions over 1 year from eviction_data_last_modified_date - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>integer</td><td>General Sessions Court Eviction Filings</td><td>monthly</td><td>0</td><td></td></tr><tr><td>43</td><td>total_evictions</td><td>total evictions since 1/1/2016 - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>integer</td><td>General Sessions Court Eviction Filings</td><td>monthly</td><td>0</td><td></td></tr><tr><td>44</td><td>evictions_data_last_modified</td><td>most recent date the evictions data table was updated</td><td>timestamp</td><td>General Sessions Court Eviction Filings</td><td>monthly</td><td>2025-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>45</td><td>service_req_6mo</td><td>total 311 service requests over 6 months from evictions_data_last_modified_date</td><td>integer</td><td>City of Memphis Public Works Requests</td><td>monthly</td><td>0</td><td></td></tr><tr><td>46</td><td>service_req_1yr</td><td>total 311 service requests over 1 year  from evictions_data_last_modified_date</td><td>integer</td><td>City of Memphis Public Works Requests</td><td>monthly</td><td>0</td><td></td></tr><tr><td>47</td><td>total_service_req</td><td>total 311 service requests from 1/1/2016</td><td>integer</td><td>City of Memphis Public Works Requests</td><td>monthly</td><td>6</td><td></td></tr><tr><td>48</td><td>sr_data_last_updated</td><td>most recent date the public works data table was updated</td><td>timestamp</td><td>City of Memphis Public Works Requests</td><td>monthly</td><td>2025-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>49</td><td>permit_cost_1year</td><td>total cost of permits in the last year from evictions_data_last_modified_date</td><td>double</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>0</td><td></td></tr><tr><td>50</td><td>demo_permit_1year</td><td>total number of demolition permits in last year from evictions_data_last_modified_date</td><td>integer</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>0</td><td></td></tr><tr><td>51</td><td>building_permit_1year</td><td>total number of building permits in last year from evictions_data_last_modified_date</td><td>integer</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>0</td><td></td></tr><tr><td>52</td><td>total_permit_cost</td><td>total cost of all permits at property since 01/03/2011</td><td>decimal</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>15000</td><td></td></tr><tr><td>53</td><td>total_permit_cost_10years</td><td>total cost of all permits at property over the past 10 years</td><td>decimal</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>15000</td><td></td></tr><tr><td>54</td><td>total_demo_permit_cost</td><td>total cost of all demolition permits at property since 01/03/2011</td><td>decimal</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>10000.00</td><td></td></tr><tr><td>55</td><td>total_building_permit_cost</td><td>total cost of all building permits at property since 01/03/2011</td><td>decimal</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>5000.00</td><td></td></tr><tr><td>56</td><td>total_permits</td><td>total number of all permits at property since 01/03/2011</td><td>integer</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>2</td><td></td></tr><tr><td>57</td><td>total_permits_1year</td><td>total number of permits at property over the past year</td><td>integer</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>1</td><td></td></tr><tr><td>58</td><td>total_permits_10years</td><td>total number of permits at property over the past 10 years</td><td>integer</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>2</td><td></td></tr><tr><td>59</td><td>most_recent_permit_date</td><td>Date of the most recent permit</td><td>timestamp</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>2025-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>60</td><td>demo_permit_10years</td><td>total number of demolition permits at property over the past 10 years</td><td>integer</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>1</td><td></td></tr><tr><td>61</td><td>building_permit_10years</td><td>total number of demolition permits at property over the past 10 years</td><td>integer</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>1</td><td></td></tr><tr><td>62</td><td>permit_data_last_updated</td><td>most recent date the permits data table was updated</td><td>timestamp</td><td>Dev901 Accela Building &#x26; Demolition Permits</td><td>monthly</td><td>2025-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>63</td><td>owner_occupied</td><td>owner-occupied property - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>Assessor Certified Roll - Property, Property Owner, Apartments, Legal</td><td>yearly</td><td>N</td><td></td></tr><tr><td>64</td><td>investor_owned</td><td>investor-owned property - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>Assessor Certified Roll - Property, Property Owner, Apartments, Legal</td><td>yearly</td><td>N</td><td></td></tr><tr><td>65</td><td>owner_location</td><td>local vs non local status of property owner - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>Assessor Certified Roll - Property, Property Owner, Apartments, Legal</td><td>yearly</td><td>Local</td><td></td></tr><tr><td>66</td><td>owner_geography</td><td>location category of property owner - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>Assessor Certified Roll - Property, Property Owner, Apartments, Legal</td><td>yearly</td><td>City</td><td></td></tr><tr><td>67</td><td>owner_type</td><td>type of property ownership - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>Assessor Certified Roll - Property, Property Owner, Apartments, Legal</td><td>yearly</td><td>Company</td><td></td></tr><tr><td>68</td><td>owner_name</td><td>property owner name of record</td><td>string</td><td>Assessor Certified Roll -  Property Owner</td><td>yearly</td><td>MEMPHIS 38104 LLC</td><td></td></tr><tr><td>69</td><td>own_addr</td><td>property owner street address of record</td><td>string</td><td>Assessor Certified Roll -  Property Owner</td><td>yearly</td><td>1041 S COX ST</td><td></td></tr><tr><td>70</td><td>own_cityname</td><td>property owner city of record</td><td>string</td><td>Assessor Certified Roll -  Property Owner</td><td>yearly</td><td>MEMPHIS</td><td></td></tr><tr><td>71</td><td>own_statecode</td><td>property owner state of record</td><td>string</td><td>Assessor Certified Roll -  Property Owner</td><td>yearly</td><td>TN</td><td></td></tr><tr><td>72</td><td>own_zip</td><td>property owner zip code of record</td><td>string</td><td>Assessor Certified Roll -  Property Owner</td><td>yearly</td><td>38104</td><td></td></tr><tr><td>73</td><td>owner_data_last_modified</td><td>most recent date the Assessor's Property Owner data table was updated</td><td>timestamp</td><td>Assessor Certified Roll -  Property Owner</td><td>yearly</td><td>2020-06-11T00:00:00.000+00:00</td><td></td></tr><tr><td>74</td><td>bcs_survey_year</td><td>most recent year of bluff city snapshot survey data</td><td>string</td><td>Bluff City Snapshot Survey</td><td>intermittent</td><td>2015</td><td></td></tr><tr><td>75</td><td>bcs_property_rating</td><td>most recent property image from bluff city snapshot 2015 or 2020</td><td>integer</td><td>Bluff City Snapshot Survey</td><td>intermittent</td><td>2</td><td></td></tr><tr><td>76</td><td>bcs_property_image</td><td>most recent property image from bluff city snapshot 2015 or 2020</td><td>hyperlink</td><td>Bluff City Snapshot Survey</td><td>intermittent</td><td>https://memparcel-photos.s3.amazonaws.com/photos/bcs/02904200037-IMG2015-10-12T19%3A38%3A07.136Z-833.jpg</td><td></td></tr><tr><td>77</td><td>property_address</td><td>full parcel address including city, state, zip that is standardized and geocoded - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>Geocoded and formatted using ArcGIS</td><td>yearly</td><td>2232 Zanone Ave, Memphis, Tennessee, 38114</td><td></td></tr><tr><td>78</td><td>owner_address</td><td>full address of property owner including city, state, zip that is standardized and geocoded - see <a href="/pages/8F5W4y0SS0BjBqVOfU8m">Data Rules</a> for more details</td><td>string</td><td>Geocoded and formatted using ArcGIS</td><td>yearly</td><td>1041 S Cox St, Memphis, Tennessee, 38104</td><td></td></tr><tr><td>79</td><td>council_district</td><td>memphis city coucil district id</td><td>string</td><td>Transformation using data from City of Memphis Data Hub</td><td>as needed</td><td>4</td><td></td></tr><tr><td>80</td><td>commission_district</td><td>shelby county commission district id</td><td>string</td><td>Transformation using data from City of Memphis Data Hub</td><td>as needed</td><td>9</td><td></td></tr><tr><td>81</td><td>zipcode</td><td>zip code tabulation area id 2022</td><td>string</td><td>Transformation using data from City of Memphis Data Hub</td><td>as needed</td><td>38114</td><td></td></tr><tr><td>81</td><td>super_district</td><td>memphis city council super district id</td><td>string</td><td>Transformation using data from City of Memphis Data Hub</td><td>as needed</td><td>8</td><td></td></tr><tr><td>82</td><td>tract_2020</td><td>cencus tract geoid 2020</td><td>string</td><td>Transformation using data from Census</td><td>decennial</td><td>47157006600</td><td></td></tr><tr><td>83</td><td>tract_2010</td><td>cencus tract geoid 2010</td><td>string</td><td>Transformation using data from Census</td><td>decennial</td><td>47157006600</td><td></td></tr><tr><td>84</td><td>tract_2000</td><td>cencus tract geoid 2000</td><td>string</td><td>Transformation using data from Census</td><td>decennial</td><td>47157006600</td><td></td></tr><tr><td>85</td><td>lat</td><td>latitude</td><td>string</td><td>Geocoded using ArcGIS</td><td>yearly</td><td>35.11178766</td><td></td></tr><tr><td>86</td><td>lon</td><td>longitude</td><td>string</td><td>Geocoded using ArcGIS</td><td>yearly</td><td>-89.98819913</td><td></td></tr><tr><td>87</td><td>cent_geopoint</td><td>combined latitude, longitude</td><td>string</td><td>Transformation of ArcGIS Geocoded data</td><td>yearly</td><td>35.11178766,-89.98819913</td><td></td></tr><tr><td>88</td><td>centroid</td><td>center point of shapefile polygon</td><td>string</td><td>Transformation using Assessor Certified Roll</td><td>yearly</td><td>POINT (-89.98819912526677 35.111787664366766)</td><td></td></tr><tr><td>89</td><td>h3_index</td><td>powerful and efficient way to organize and analyze location-based data by dividing the Earth into a system of hierarchical hexagonal cells</td><td>string</td><td>Transformation using Assessor Certified Roll</td><td>yearly</td><td>8f2659a056d2093</td><td></td></tr><tr><td>90</td><td>geometry</td><td>shapefile geometry</td><td>string</td><td>Assessor Certified Roll</td><td>yearly</td><td>POLYGON ((-89.98810895613269 35.11195638094608, -89.98811155018404 35.11187387538133, -89.98811968907393 35.11161345946176, -89.98828852836989 35.111619059788886, .....))</td><td></td></tr></tbody></table>


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