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Square One Office Plaza 4542 Ruffner St 1,922 - 5,306 SF of Space Available in San Diego, CA 92111

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HIGHLIGHTS

  • Centrally Located
  • Ability to accommodate various uses and sizes
  • World Class Food Within Walking Distance

ALL AVAILABLE SPACES(2)

Display Rental Rate as

  • SPACE
  • SIZE
  • TERM
  • RENTAL RATE
  • SPACE USE
  • CONDITION
  • AVAILABLE
  • 1st Floor, Ste R140
  • 1,922 SF
  • Negotiable
  • $41.88 CAD/SF/YR $3.49 CAD/SF/MO $80,489 CAD/YR $6,707 CAD/MO
  • Office/Medical
  • Full Build-Out
  • 2026-01-01
  • Listed rate may not include certain utilities, building services and property expenses
  • Fits 1 - 10 People
  • Space is in Excellent Condition
  • Balcony
  • High Ceilings
  • Atrium
  • Mostly Open Floor Plan Layout
  • 3 Private Offices
  • Central Air Conditioning
  • Fully Carpeted
  • After Hours HVAC Available
  • Open-Plan
  • 3rd Floor, Ste R320
  • 3,384 SF
  • Negotiable
  • $40.20 CAD/SF/YR $3.35 CAD/SF/MO $136,045 CAD/YR $11,337 CAD/MO
  • Office
  • Full Build-Out
  • 2026-02-01

Suite R320 at Square One Office Plaza offers approximately 3,384 square feet of move-in ready office space. The suite features a large conference room and 14 private offices, making it ideal for teams seeking a professional and functional layout. The asking rate is $2.40 per square foot, plus utilities. 5% tenant rep commission on full term.

  • Listed lease rate plus proportional share of electrical cost
  • Fits 13 - 20 People
  • 2 Conference Rooms
  • Reception Area
  • Fully Carpeted
  • After Hours HVAC Available
  • Fully Built-Out as Research and Development Space
  • 13 Private Offices
  • Central Air Conditioning
  • Elevator Access
  • Corner Space
Space Size Term Rental Rate Space Use Condition Available
1st Floor, Ste R140 1,922 SF Negotiable $41.88 CAD/SF/YR $3.49 CAD/SF/MO $80,489 CAD/YR $6,707 CAD/MO Office/Medical Full Build-Out 2026-01-01
3rd Floor, Ste R320 3,384 SF Negotiable $40.20 CAD/SF/YR $3.35 CAD/SF/MO $136,045 CAD/YR $11,337 CAD/MO Office Full Build-Out 2026-02-01

1st Floor, Ste R140

Size
1,922 SF
Term
Negotiable
Rental Rate
$41.88 CAD/SF/YR $3.49 CAD/SF/MO $80,489 CAD/YR $6,707 CAD/MO
Space Use
Office/Medical
Condition
Full Build-Out
Available
2026-01-01

3rd Floor, Ste R320

Size
3,384 SF
Term
Negotiable
Rental Rate
$40.20 CAD/SF/YR $3.35 CAD/SF/MO $136,045 CAD/YR $11,337 CAD/MO
Space Use
Office
Condition
Full Build-Out
Available
2026-02-01

1st Floor, Ste R140

Size 1,922 SF
Term Negotiable
Rental Rate $41.88 CAD/SF/YR
Space Use Office/Medical
Condition Full Build-Out
Available 2026-01-01

  • Listed rate may not include certain utilities, building services and property expenses
  • Mostly Open Floor Plan Layout
  • Fits 1 - 10 People
  • 3 Private Offices
  • Space is in Excellent Condition
  • Central Air Conditioning
  • Balcony
  • Fully Carpeted
  • High Ceilings
  • After Hours HVAC Available
  • Atrium
  • Open-Plan

3rd Floor, Ste R320

Size 3,384 SF
Term Negotiable
Rental Rate $40.20 CAD/SF/YR
Space Use Office
Condition Full Build-Out
Available 2026-02-01

Suite R320 at Square One Office Plaza offers approximately 3,384 square feet of move-in ready office space. The suite features a large conference room and 14 private offices, making it ideal for teams seeking a professional and functional layout. The asking rate is $2.40 per square foot, plus utilities. 5% tenant rep commission on full term.

  • Listed lease rate plus proportional share of electrical cost
  • Fully Built-Out as Research and Development Space
  • Fits 13 - 20 People
  • 13 Private Offices
  • 2 Conference Rooms
  • Central Air Conditioning
  • Reception Area
  • Elevator Access
  • Fully Carpeted
  • Corner Space
  • After Hours HVAC Available

PROPERTY OVERVIEW

Landlord paying 5% Tenant Broker Commission! 4542 Ruffner Street and 7675 Dagget Street are two well-maintained, centrally located office buildings in Central San Diego. Each building boasts over 55,000 square feet of rentable building area broken up into various size spaces ranging from 1,500-18,000+ square feet. The property is within walking distance of Convoy Street, which features world-class Asian cuisine. Please check out our marketing video below for more information. Link to Marketing Video: https://vimeo.com/904973605

  • Property Manager on Site
  • Signage
  • Balcony

PROPERTY FACTS

Building Type
Office
Year Built/Renovated
1983/2004
Building Height
3 Stories
Building Size
55,690 SF
Building Class
B
Typical Floor Size
18,756 SF
Parking
150 Surface Parking Spaces
  • Listing ID: 34511771

  • Date on Market: 2025-09-04

  • Last Updated:

  • Address: 4542 Ruffner St, San Diego, CA 92111

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