Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
Seller Guide

Open Houses in NYC

Building coordination, security, sign-in requirements, marketing strategy, and the 48-hour follow-up system that turns open house traffic into signed contracts.

In NYC co-op buildings, only 1 in 3 open house visitors is a serious buyer, according to REBNY broker survey data. The rest are neighbors, browsers, and market researchers. After 25+ years running open houses from Washington Heights to Lower Manhattan, I have developed a system that filters out the browsers and converts serious visitors into offers. This guide explains that system in full.

Open houses serve multiple functions in an NYC listing campaign: they generate showing volume quickly, they create the perception of competitive interest (which is real psychological leverage), and they surface buyers who might not have booked a private appointment but are ready to act once they see the property in person. Used correctly, they are a valuable tool. Used without strategy, they burn seller time and energy with limited results.

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Milton Coste, Licensed Real Estate Associate Broker at Keller Williams NYC, has represented sellers across all five boroughs for 25+ years.

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The NYC Open House Landscape: Elevator Buildings, Doormen, and Security

Running an open house in a Manhattan elevator building is operationally different from a standalone townhouse or low-rise walkup. The building infrastructure is your first logistical challenge.

Coordinating With Building Staff

Before you advertise any open house date, your agent needs to confirm:

  • Building management notification: Most co-op and condo managing agents require 48 to 72 hours written notice before an open house. Some require board notification. Your agent should have a standard notification letter that covers all required parties.
  • Lobby access and signage: Many NYC buildings do not allow open house signs in the lobby or elevator. Confirm what is permitted before ordering printed materials.
  • Elevator availability: If the building has one elevator and a move is scheduled for the same afternoon, your open house logistics become complicated. Check the building's move-in/move-out calendar.
  • Doorman briefing: The doorman is your first point of contact with visitors. Make sure they know the unit number, the listed agent's name, and how to handle visitors who arrive without signing in at the door.

Security Considerations

Open houses are lower-security events than appointment showings by their nature. Best practices for NYC open houses:

  • Remove or secure all jewelry, medication, personal documents, and small valuables before every open house
  • Position the listing agent or a co-agent so at least one person can see all access points at any given time
  • Use a digital sign-in system (tablet-based apps like Open Home Pro capture more complete data and cannot be left behind accidentally)
  • Never leave the unit unattended while visitors are inside

Timing Your Open House for Maximum Traffic

Day / Window Best For Notes
Sunday 12pm to 2pmMost neighborhoods, most price pointsHighest buyer foot traffic citywide
Saturday 1pm to 3pmNeighborhoods with out-of-town or relocating buyersGood for new developments; some buyers prefer Saturday
Weekday 12pm to 1:30pmMidtown, FiDi, downtown ManhattanOffice-worker buyer pool; lower volume but higher intent
Sunday 2pm to 4pmProperties that tend to get multiple offersBuyers leaving first open houses arrive here primed to act

Pre-Open-House Checklist

The 24-hour window before the first open house is when most of the work happens. Every item on this list needs to be completed before a single visitor walks through the door.

48 Hours Before

  • Notify building manager/super in writing
  • Brief doorman on the event and agent contacts
  • Order printed feature sheets (1 per expected visitor + 20%)
  • Confirm photographer has delivered all edited listing photos
  • Verify listing is live on RLS, StreetEasy, Zillow, and Trulia
  • Share open house date on social media and in email blast

Day Of: 60 Minutes Before

  • Deep-clean apartment one final time
  • Turn on all lights; set temperature to 70F
  • Remove all personal items from surfaces
  • Open blinds/curtains fully
  • Set out feature sheets, floor plans, and sign-in tablet
  • Remove all valuables, medication, personal documents
  • Depart the property (do not be present)

Working With Building Management for Access

In co-ops, the relationship between the listing agent and the managing agent is especially important. Some co-op managing agents require that they be present at all open houses, or that the listing agent hold a certificate of insurance. Others require that all visitors sign a non-disclosure form before entering a shareholder's unit.

My standard practice is to obtain the building's specific open house requirements at the beginning of the listing engagement, not the day before the first event. A managing agent who feels blindsided by an open house notification 12 hours in advance can cause delays that affect your listing launch.

Sign-In Sheet Requirements and Data Capture

The sign-in sheet is your lead capture system. Visitors who decline to sign in are typically not serious buyers, but the sheet also serves a legal function: it documents who was in your property on a given date, which can matter in the rare event of a theft or damage claim.

Minimum fields to capture:

  • Full name
  • Phone number
  • Email address
  • Are you working with an agent? (yes/no)
  • If yes, agent name and brokerage

REBNY 2025 Buyer Representation Rule

Under REBNY's 2025 buyer representation rules, buyers must have executed a Buyer Representation Agreement with their agent before attending a private, appointment-based showing. Public open houses operate under different protocols. Your listing agent should stay current on how this rule applies in the specific showing context to ensure compliance.

Marketing an NYC Open House

An open house that no one knows about accomplishes nothing. The marketing window for an open house is the five to seven days before the event. Key channels:

  • RLS/REBNY open house listing: Your agent should add the open house to the RLS system, which syndicates to StreetEasy, Zillow, and Trulia. Buyers on saved searches for your area receive automatic email alerts.
  • Email to agent network: A direct email to the 20 to 40 buyer agents most active in your neighborhood is often the highest-converting single action. Agents with buyers in that exact price range and neighborhood will respond within hours.
  • StreetEasy open house feature: StreetEasy allows sellers and agents to promote open houses as a paid feature. In competitive markets, this is worth the spend for high-traffic listings.
  • Social media: Instagram Stories and Facebook posts with the specific address, time, and a compelling photo of the best room in the apartment.
  • Building neighbors: Neighbors often know buyers. A tasteful note in the lobby bulletin board or a door flyer (where permitted by building management) can generate walk-in traffic from within the building's social network.

Converting Walk-Ins to Offers

The open house ends, but the work is not over. The conversion window is the 24 to 48 hours following the event. Every signed-in visitor represents a warm lead who has physically been in the property and has given you permission to follow up.

The most effective follow-up sequence:

  1. Same-day text or email (within 4 hours): "Thank you for visiting [address] today. I'm happy to answer any questions or schedule a second showing at your convenience."
  2. 24-hour follow-up call (for high-interest visitors): Visitors who asked specific questions about price, maintenance costs, or the building financials during the open house are strong prospects. A direct call within 24 hours keeps the momentum.
  3. Second showing offer (for any visitor who expressed interest): A second showing request is the strongest signal of buyer intent short of an offer. Book it within 48 to 72 hours while the property is fresh.

Virtual Open House Alternatives

For sellers who cannot vacate for physical open houses, or for listings targeting buyers outside the immediate area, virtual open houses via Zoom or FaceTime have become a standard supplement. A live virtual tour is not a replacement for an in-person showing, but it can capture buyers who would not otherwise attend and can qualify them before they invest time in a trip.

My virtual open house setup includes a stabilized camera for smooth movement, strong lighting in all rooms, and a pre-planned tour route that highlights the property's strongest features in the first two minutes.

Review the staging guide to make sure the property is showing-ready, or read about what happens after you accept an offer in the NYC closing process guide.

REBNY RLS

Homes With Upcoming Open Houses

Active sale listings across all five boroughs. Source: REBNY RLS.

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Listing information provided courtesy of the Real Estate Board of New York's Residential Listing Service (RLS). Information is deemed reliable but not guaranteed. Sale listings verified. ©2026 REBNY. RLS data displayed by Keller Williams NYC.

Frequently Asked Questions

Are open houses effective for selling a co-op in NYC?
Co-op open houses carry an additional consideration: the co-op board must approve the eventual buyer regardless of how they found the listing. Open houses are effective for generating showing traffic and offers in co-ops, but your agent must remind every visitor that board approval is a required step and that a Buyer Representation Agreement is required before private showings. Public open houses are distinct from private showings in terms of the buyer representation requirement.
What is the best day and time for an NYC open house?
Sunday from 12pm to 2pm remains the dominant open house window in NYC, as that is when the largest number of active buyers are available to tour. Saturday open houses perform well in neighborhoods with high out-of-town buyer traffic. Weekday open houses during lunch hours (12pm to 1:30pm) can be effective for high-traffic Midtown and Downtown locations where office workers represent a meaningful buyer pool. Evening open houses rarely outperform weekend slots in residential neighborhoods.
Do I need building management approval to hold an open house?
Yes, in most NYC co-op and condo buildings. The building superintendent, property manager, or co-op managing agent should be notified at least 48 to 72 hours before the open house. Some buildings require formal written notice to the board or building manager. Your agent should handle this coordination and confirm elevator access, lobby signage permissions, and guest sign-in requirements with building staff before advertising the event.
What goes on a sign-in sheet at an NYC open house?
A standard open house sign-in sheet captures visitor name, phone number, email address, and whether they are working with a buyer representation agreement from an agent. This data becomes part of the listing broker's records and is used to follow up with prospects. Under REBNY rules, all buyer visitors at a showing must have executed a Buyer Representation Agreement with their agent before a private showing, though this rule applies differently to public open houses than to appointment-based showings.
How do I convert open house walk-ins into offers?
The single most effective conversion strategy is immediate, personalized follow-up within 24 hours. Your agent should contact every signed-in visitor with a direct question: what did you think, and does this property fit what you are looking for? Buyers who attended an open house and did not immediately proceed to offer often have a specific objection (price, floor plan, maintenance costs) that a direct conversation can address. Second showings, which are a strong signal of serious buyer interest, should be scheduled within 48 to 72 hours while the property is fresh in the buyer's mind.

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