For governments, land banks, community developers, and researchers
One picture of blight and development, across departments
Code enforcement, vacancy, tax delinquency, demolitions, and permits, joined by property, with Census context for every area, and comparable across markets.
The work today
Joining departments by hand
Strategies against abandonment depend on departments sharing data, and many still trade spreadsheets.
Buffalo assembled its own platform from 50 datasets to see vacancy and blight in one place.
Counts mean little across neighborhoods or cities of different size. Rates per home do.
Questions governments and institutions ask
-
Which parts of Brooklyn have the most code violations per home this year, and what are incomes like there?
Flatbush leads. Around Ocean Ave and Flatbush Ave (ZIP 11226), 2,230 violations were opened this year, about 1.3 per home, where the median household income is $74,000.
-
How do code violations per 1,000 homes compare across Cleveland, Cincinnati, and Pittsburgh this year?
Cincinnati opened 59.1 violations per 1,000 homes this year and Pittsburgh 57.7, against Cleveland’s 33.5. Pittsburgh’s figure rests on fewer sources before late September, and the answer says so.
-
In Cleveland, how many condemned properties got a demolition permit within a year?
Of 658 properties condemned between October 2024 and September 2025, 202 (31%) were issued a demolition permit within a year, a median of 174 days later.
Real questions, asked in DeltaVisor on the dates shown. Answers shortened.
The records behind the answers
- Code enforcement: violations opened and resolved, and condemnations
- Vacancy registers and vacant-building cases
- Tax delinquency, from each market’s own records
- Permits and demolitions, for development pressure
- Census figures for every area, so counts become rates