Methodology

Sources

• Duval County Property Appraiser data offerings (https://www.jacksonville.gov/departments/property-appraiser/data-offerings): real estate tax roll (pipe-delimited), sales file (fixed format), parcel shapefiles. Newest files are found on the page each run; the as-of date is taken from dates inside each file.
• Legal Services Corporation, Civil Court Data Initiative (https://civilcourtdata.lsc.gov/data/eviction/florida/duval/): monthly eviction filing counts for Duval County (county-wide only). Civil Court Data Initiative. Legal Services Corporation, 2022. (accessed November 09, 2026).
• Florida Division of Corporations (Sunbiz) corporate data, used only to group related owner names.
• City of Jacksonville code-enforcement case export and Clerk of Court eviction filings: added when received through public records requests.

Definitions

• Home: a parcel whose Property Appraiser use code is residential (Florida DOR use groups 01-08).
• Not owner-occupied (investor-owned share): homes without a homestead exemption ÷ all homes.
• Rental parcel: a home with no homestead exemption whose owner mails tax bills somewhere else or is a business.
• Purchase: a recorded sale of a home for $10,000 or more (filters out $100 family and paperwork transfers).
• Investor purchase: a purchase where the buyer is a business, or the buyer's mailing address is not the property.
• Resold within 12 months: a home bought and sold again within 365 days, counted when the resale falls in the last 12 months; median price change = resale price minus purchase price.
• Code case rate: new code-enforcement cases per 100 rental parcels, trailing 12 months. Eviction filing rate: eviction filings matched to a parcel, per 100 rental parcels, trailing 12 months.
• Landlord Pressure Score: 0-100, weighted average of each zip's percentile rank on investor-owned share, code case rate and eviction filing rate. Shown only after 12 months of code-case and eviction records are loaded.

Limitations

• Cash-sale share is not published: the Property Appraiser's sales file has no financing field.
• The buyer's mailing address is only known for a home's most recent sale; older sales use the business test only.
• Zip codes with fewer than 50 homes are not shown.
• Recorded sales lag closings by days to weeks, so the latest month can rise after first publication.
• Code-enforcement cases can include unverified complaints. An eviction filing is not a completed eviction. Figures are zip-code totals from public records and are not advice about any property.

Code-enforcement cases can include unverified complaints. An eviction filing is not a completed eviction. Figures are zip-code totals from public records and are not advice about any property.