21 Hopper St, Prospect Park, NY, 7508 is a rental building in Prospect Park, NYC. See every violation, 311 complaint, tenant review, and the LucidIQ score — before you sign a lease.
No owner is currently linked to this building in public records. Ownership data is pulled from ACRIS deeds and HPD registrations.
ACRIS deeds and regulatory filings
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Monthly counts over the last 7 years · all data sources
No HPD records on file in the last 7 years.
Prospect Park · September 2025
Best & worst months to sign a lease
Potential savings: ~30% by timing your move to June.
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