What "Off-Market" really means. Our data source tracks when a listing appears and disappears from the rental market. When a listing disappears we mark it "Off-Market." Most off-market events are successful rentals, but some are withdrawals, expirations, or rentals arranged outside the listing platform.
What "Listing Velocity" measures. Days from when a property was listed to when it went off-market. This is a strong proxy for rental demand — fast off-market times correlate with high renter interest — but it's not a perfect "days-to-rent" measurement because of the ambiguity above.
What this means in practice. Use the metrics as relative indicators across pockets ("zip A is faster than zip B," "near this school is faster than two miles away"), not as absolute predictions of rental success for a specific property. The relative signal is robust even with the noise.
Data sources. Active and off-market rental listings via RentCast API. Amenity locations via OpenStreetMap. School ratings via Delaware Department of Education. Property type limited to single-family homes, townhomes, and twins/duplexes — apartment buildings excluded.
Pin locations. Pin coordinates are jittered ~75 meters from real locations to protect listing privacy on this public site. Exact addresses are available on request to verified investor clients.
For authoritative rental lifecycle data (exact lease close dates from MLS records), licensed real estate professionals can access Bright MLS directly. This tool uses aggregated public sources and is best used as a screening tool, not a final due-diligence source.