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Renovated Office Building
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311 Barnum Avenue, Port Jefferson, NY 11777

Renovated office property with private parking, storage, and a flexible professional layout.

Property SizeContact for details
Days on Market9

Property Features for 311 Barnum Avenue

General Information

Standard status Active
Property subtype Office
Listing Agency: Reliant Realty Group LLC
Listed By: Robert Gitto · License #NY
Source: Crexi
Added: Sep 15 Changed: Sep 22 Last Checked: Sep 22 at 3:25PM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of Reliant Realty Group LLC

Investment Insights

Based on property information with market context.

Located at 311 Barnum Avenue in Port Jefferson Village, this renovated office building offers a practical layout for professional or medical use. The interior includes five private offices, a conference room, a full eat-in kitchen, and two handicap-accessible restrooms. Additional utility comes from abundant dry storage and an accessible attic that provides further storage capacity.

The property includes 25 private on-site parking spaces and is positioned within Port Jefferson Village, near its business community, restaurants, shops, and other village amenities. Its existing office configuration and renovated condition support an owner-user seeking functional space with limited additional improvements, while the flexible arrangement may also suit other qualified commercial uses identified for the property.

Key Highlights

  • Five private offices plus a spacious conference room
  • 25 private on‑site parking spaces
  • Two handicap‑accessible restrooms

Property Analytics

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Current Use

East End Hand ... Physician Optical Outfitters Ophthalmologist Village Eye Care Ophthalmologist Cossari Alfred J ... Ophthalmologist Jiri Mladek, OD Physician

Suggested Use

Top Pick Building Supply Grocery & Convenience Store Auto Repair Shop Storage Facility (Bike/Boat/Book/etc) Store HVAC Service

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Location Intelligence

Trade Area within ½ mile

804
Businesses Nearby

Demographics for 11777, NY

9,346
Population
3,893
Households
2.4
Avg Household Size
46
Median Age
69%
College-Educated
97%
High-School Grad
4.4 sq mi
ZIP Area
2,124
Density / Sq Mi
$148,519
Median Household Income
$72,042
Median Earnings
$2,261
Median Rent
$655,900
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
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Market

Vacancy Rate% for Office in Northeast region

13.1% 2019
15.4% 2020
17.6% 2021
19.1% 2022
20.2% 2023
20.9% 2024
19.9% 2025
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Frequently Asked Questions

What type of property is this?
Office building - Renovated office property with private parking, storage, and a flexible professional layout.
Where is this office building located?
The property is located at 311 Barnum Avenue Port Jefferson, NY.
What is the asking price?
The asking price for this property is $2,200,000.
What are key features of this property?
This property features: Five private offices plus a spacious conference room; 25 private on‑site parking spaces; Two handicap‑accessible restrooms
(631) 509-0077 Call to check price and availability
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