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141 Mill Rock Rd E
Old Saybrook, CT 06475

$7.15 USD/SF/YR

Research And Development For Lease  •  23,302+ SF

Property Details

  • Property Type Research And Development
  • Year Built 1998
  • Total Building Size 110,840 SF
  • Tenancy Multiple
  • Building Class C
  • Zoning I-2
30 Transit Score
40 Walk Score

1 Space Available

Name Space Use Size Rent Details
1st Floor Ste Flex 23,302-50,000 SF $7.15 USD/SF/YR 
23,302 - 52,302 SF of versatile space in a large, energy-efficient, multi-tenanted building. Nearly shell space, this offering features three private offices large open areas, a kitchenette and a loading area with 3 docks & 2 overhead doors. Can be fit up to suit tenant’s needs including office, warehouse/distribution, light assembly or a mix. Close proximity to I-95 and CT-9. Located in a well-maintained campus-like setting which features a daycare facility and a fitness center. $8.45/SF/YR/NNN

I-95: Less than 1 mile via Exit 67/ Route 9: 3.3 miles to major north-south artery connecting Hartford region/Route 1 (Boston Post Road): 0.8 miles for local connectivity

ON-SITE AMENITIES: Childcare Facility; Fitness Center-Personal Training Gym (Ironhouse Fitness); Well-Maintained Campus Environment: Professional business park setting
Ample Parking: Campus-style parking layout

NEARBY BUSINESS AMENITIES: Historic Main Street: Charming Main Street with unique shopping and dining opportunities-less than 2 miles; Dining Options: 81 restaurants near I-95 Exit 67, including Pasta Vita, Fresh Salt waterfront dining, Little Pub, and numerous local establishments
Professional Services Hub: Over 1,000 businesses with a mix of industries including unique retail, professional services, R&D, international manufacturing, IT, and e-commerce companies; The Kate Cultural Arts Center: Local theater and entertainment venue; Saybrook Point Resort & Marina: Premium hospitality and conference facilities nearby

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Triple Net
  • Space Type: Relet

Description 

141 Mill Rock Road East offers 23,000–50,000 SF of high-function flex space built for users who need power, process, and people — not 30’ clear. With 3,000 amps of power, this space is ideally suited for:

Light manufacturing & assembly; Advanced manufacturing support / additive / prototyping; Medical device, lab-adjacent, or regulated production; Aerospace / defense supplier operations; Testing, QA, and engineering services; Kitting, small-parcel fulfillment & returns processing; Training, tech support, and operations HQ

If your operation runs on equipment, not cube — this works.
Multiple voltage options: 110V, 220V, 277V, and 480V
Industrial-grade power distribution suitable for heavy manufacturing equipment and precision R&D operations

Building Features: Modern architectural design with extensive natural lighting through floor-to-ceiling windows
Open floor plans with exposed ceilings and industrial lighting; Flexible space configuration 
Concrete flooring throughout industrial areas; Climate-control

Property Highlights
23,302 – 50,000 SF available (divisible)
3,000 AMP / 3-phase power (110–440V)
4 loading docks + 1 drive-in door
Efficient clear span / flexible layout
Generous on-site parking (300+ spaces)
Wet sprinkler system
Professional business park setting
Location Advantage: Positioned in the Old Saybrook Business Park, the property provides immediate access to:

I-95 & Route 9 (regional connectivity)
The New London / Groton defense corridor
The Middletown / Hartford manufacturing base
Shoreline labor pool + lifestyle amenities

Strategically located between major employment hubs without the congestion or cost.

A power-driven flex facility designed for modern industrial users who prioritize capability over clear height.

Highlights

Light Manufacturing; Assembly; Prototyping
3,000 Amps
Full Climate Control
Heavy Floor Loads
Testing, QA, Engineering & Training Operations
23,000–50,000 SF Available (Divisible)

Amenities

  • 24 Hour Access
  • Fitness Center
  • Signage

Public Transportation

Commuter RailDriveWalkDistance
Old Saybrook (Shore Line East - Shore Line East) 3 min 18 min 0.8 mi
9 min - 5.1 mi
Transit/SubwayDriveWalkDistance
Old Saybrook (Shore Line East - Shore Line East) 4 min 18 min 0.9 mi
AirportDriveWalkDistance
Tweed/New Haven 39 min - 28.9 mi

Parking Details

Parking Available: Yes
Reserved: No
Spaces Provided: 345
Type: Surface
Included in Rent: Yes
Kevin Geenty 203-488-1005 The Geenty Group Realtors
Kevin Geenty 203-488-1005 The Geenty Group Realtors