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The Barn at Millstone Park 3 Mapleton Rd 5,385 SF Vacant Office Building Princeton, NJ 08540 For Sale

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INVESTMENT HIGHLIGHTS

  • 3 story office building, originally a barn now a loft-style workplace with exposed beams, natural light, noise-proof offices, conference rooms, pantry
  • Near Forrestal Village and Princeton University, directly across from the new Princeton Hospital on Route 1
  • Close to Princeton University’s research library, campus facilities, and cultural resources
  • Also includes print/storage areas, high-speed internet, and cloud platform setup. Fully furnished, handicap accessible, and recently upgraded
  • The building has ample parking, and is close to restaurants, fitness centers, luxury hotels, executive accommodations, and biking/jogging trails
  • Located on +/- 4 acres, equipped with solar power via installed panels, LED lighting, three-zone natural gas HVAC, and outdoor flood lights

EXECUTIVE SUMMARY

Nestled on ±4 acres in Princeton’s prestigious healthcare and academic corridor, 3 Mapleton Road presents a rare opportunity to own a fully renovated, loft-style office building with deep architectural character and modern infrastructure. Originally a barn, this three-story structure has been transformed into a dynamic workplace featuring exposed beams, natural light, noise-proof offices, and high-speed internet with cloud platform integration. The property is fully furnished, ADA compliant, and equipped with solar panels, LED lighting, and a three-zone natural gas HVAC system.
Strategically located across from the new Princeton Hospital and near Forrestal Village, the site offers unmatched proximity to Princeton University, executive accommodations, and a vibrant mix of dining, retail, and wellness amenities. With direct access to Route 1 and nearby connections to I-95, Route 27, and Route 206, the property is just 45 minutes from both Newark and Philadelphia airports and benefits from Amtrak, NJ Transit, and SEPTA service via Princeton Junction.
This asset is ideal for owner-users or investors seeking a distinctive, energy-efficient building in one of New Jersey’s most desirable submarkets.

PROPERTY FACTS

Sale Type
Investment or Owner User
Property Type
Office
Building Size
5,385 SF
Building Class
C
Year Built/Renovated
2000/2003
Percent Leased
Vacant
Tenancy
Multiple
Building Height
2 Stories
Typical Floor Size
2,693 SF
Building FAR
0.04
Lot Size
3.10 AC
Zoning
SR

SPACE AVAILABILITY

  • SPACE
  • SIZE
  • SPACE USE
  • CONDITION
  • AVAILABLE
  • 1st Floor
  • 2,693 SF
  • Office
  • Partial Build-Out
  • Now

3 Mapleton Road offers a unique leasing opportunity in Princeton’s thriving healthcare and academic district. This ±5,385 SF loft-style office building blends rustic charm with modern functionality, featuring exposed beams, noise-proof offices, a conference room, pantry, and print/storage areas. The space is fully furnished, ADA compliant, and recently upgraded with solar power, LED lighting, and high-speed internet. Located directly across from Princeton Hospital and near Forrestal Village, tenants benefit from immediate access to top-tier amenities including Whole Foods, Lifetime Fitness, and a wide array of restaurants and retail. The property’s strategic location along Route 1 ensures excellent connectivity to major highways and transit options, including NJ Turnpike Exit 8A bus service and rail access via Princeton Junction. With ±60 parking spaces and a serene, campus-like setting, this building is ideal for healthcare, tech, or professional services firms seeking a high-quality, move-in-ready space in Princeton.

  • 2nd Floor
  • 2,692 SF
  • Office
  • Partial Build-Out
  • Now
Space Size Space Use Condition Available
1st Floor 2,693 SF Office Partial Build-Out Now
2nd Floor 2,692 SF Office Partial Build-Out Now

1st Floor

Size
2,693 SF
Space Use
Office
Condition
Partial Build-Out
Available
Now

2nd Floor

Size
2,692 SF
Space Use
Office
Condition
Partial Build-Out
Available
Now

1st Floor

Size 2,693 SF
Space Use Office
Condition Partial Build-Out
Available Now

3 Mapleton Road offers a unique leasing opportunity in Princeton’s thriving healthcare and academic district. This ±5,385 SF loft-style office building blends rustic charm with modern functionality, featuring exposed beams, noise-proof offices, a conference room, pantry, and print/storage areas. The space is fully furnished, ADA compliant, and recently upgraded with solar power, LED lighting, and high-speed internet. Located directly across from Princeton Hospital and near Forrestal Village, tenants benefit from immediate access to top-tier amenities including Whole Foods, Lifetime Fitness, and a wide array of restaurants and retail. The property’s strategic location along Route 1 ensures excellent connectivity to major highways and transit options, including NJ Turnpike Exit 8A bus service and rail access via Princeton Junction. With ±60 parking spaces and a serene, campus-like setting, this building is ideal for healthcare, tech, or professional services firms seeking a high-quality, move-in-ready space in Princeton.

PROPERTY TAXES

PROPERTY TAXES

Parcel Number
18-00302-0000-00001-0001-0C301
Land Assessment
$110,000
Improvements Assessment
$203,300
Total Assessment
$313,300
  • Listing ID: 37364196

  • Date on Market: 8/21/2025

  • Last Updated:

  • Address: 3 Mapleton Rd, Princeton, NJ 08540

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