DCP briefs practitioners on how it will work with DOB/DOB Now to stop temporary building identification numbers (TBINs/BINs) from being deleted mid-review and blocking permits, TCOs, and CFOs as the city transfers address-assignment duties to the Department of City Planning ahead of the charter-mandated January 1, 2027 start. Source: https://youtu.be/XGiOEP6O0vo&t=263
# What’s happening
– DCP will assume citywide address assignment functions from borough presidents.
– DCP says it is coordinating with DOB and DOB Now (DoNow) on technical and operational integration.
– Phase one of the charter transfer takes effect January 1, 2027.
Source: https://youtu.be/XGiOEP6O0vo&t=263
# Why it matters
– Property owners, expediters, and developers face permit and temporary certificate delays from deleted TBINs/BINs.
– Changes affect how and when final addresses and TCO/CFO paperwork are recognized in DOB Now.
Source: https://youtu.be/XGiOEP6O0vo&t=1716
# Key details
– Phase one: DCP begins address-assignment services citywide on January 1, 2027.
– DCP will require as-built floor plans to issue final official addresses for non–single-family projects.
– DCP will issue official address letters stamped by DCP and return a PD1; the DOB1 form will no longer be used.
– DCP is building a citywide address assignment team and will provide online forms with unique tracking IDs.
– DCP says it is working with DOB Now technical teams and borough teams to align processes before launch.
– DCP will publish proposed street-number rules and hold a public hearing in the fall.
Source: https://youtu.be/XGiOEP6O0vo&t=263
Department of City Planning (DCP)
– Role or jurisdiction: City agency assigned citywide address assignment and city map consolidation by charter reforms.
– Action taken or responsibility: Will accept new address requests, issue official address letters, and consolidate borough records.
– Relevant numbers/dates: Phase one effective January 1, 2027; requires as-built submissions for final addresses.
Source: https://youtu.be/XGiOEP6O0vo&t=263
Department of Buildings / DOB Now (DoNow)
– Role or jurisdiction: Licenses and permits buildings; operates DOB Now permitting platform.
– Action taken or responsibility: Will coordinate technically and operationally with DCP on TBIN/BIN handling, TCO, and CFO issuance.
– Relevant details: DOB Now flagged TBIN/BIN deletion issues to DCP; preliminary technical discussions are underway.
Source: https://youtu.be/XGiOEP6O0vo&t=2302
The Department of City Planning told practitioners it already has raised the TBIN/BIN deletion problem with DOB Now and is working to fix it. DCP staff said they are having preliminary technical and borough-level discussions with DoNow to “address issues and understand how this process works” so deletions do not block permit approvals or temporary/certificates of occupancy (TCOs) and certificates of final occupancy (CFOs). Source: https://youtu.be/XGiOEP6O0vo&t=1716
Practitioners told DCP about real cases where a CFO or TCO was issued but the associated BIN or TBIN was later deleted, forcing re‑applications and delaying occupancy paperwork. DCP acknowledged those reports and said the city planning geographic research team has a strong relationship with DOB and will work to minimize operational disruption. Source: https://youtu.be/XGiOEP6O0vo&t=1716
DCP described a two-step workflow for projects larger than single- or two-family homes. DCP will assign initial, reserved addresses at first submission. To receive final official addresses, applicants must submit as-built floor plans; DCP will then assign addresses to each entrance and issue a stamped official address letter. This two-step model creates a temporary initial number followed by a final number tied to as-built plans. Source: https://youtu.be/XGiOEP6O0vo&t=440
On how the new official address will be recorded, DCP said the DOB1 certification form will no longer be the primary certification. Instead, DCP will issue an official stamped letter and return a PD1-style document; applicants will then file with DOB Now as required. DCP staff said they are aligning the issuance format with DOB Now workflows. Source: https://youtu.be/XGiOEP6O0vo&t=3182
On the technical side, DCP said it is working directly with the DoNow technical team and with borough DOB teams to avoid the situation where a temporary BIN is deleted while there are active permit or review records. DCP said DoNow has “flagged that issue” and that DCP’s process design is patterned on current practices in some boroughs to achieve a citywide standard. Source: https://youtu.be/XGiOEP6O0vo&t=2302
To help applicants track requests and reduce miscommunication, DCP plans online forms, digital payments integrated with CityPay, and unique case-tracking IDs for address requests. DCP also said it will provide email and phone channels and in-person help at DCP offices; it will publish contact details when the citywide address assignment team is staffed. Source: https://youtu.be/XGiOEP6O0vo&t=440
DCP plans to staff a citywide address assignment team funded through the budget process and to scan and index borough president records in 2027 to support consolidated operations. DCP said proposed street-number rules, fees, and vanity-address guidelines will go to public hearing this fall. Source: https://youtu.be/XGiOEP6O0vo&t=529
What DCP committed to do next
– Continue technical alignment conversations with DoNow and borough DOB teams.
– Finalize the two-step issuance procedures and the format of the official DCP address letter.
– Publish operational contact information and team leadership this fall.
Source: https://youtu.be/XGiOEP6O0vo&t=2302
Questions that remain in the meeting record
– DCP described coordination and preliminary technical work but did not give a completed technical protocol for preventing deletions during active DOB Now reviews. Source: https://youtu.be/XGiOEP6O0vo&t=1716
Methodology note
This article is based on the Department of City Planning’s Street Number Assignment Information Session and practitioner Q&A on September 11, 2026. Quotations and descriptions come from DCP staff and attendees during that briefing. Source: https://youtu.be/XGiOEP6O0vo&t=263
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