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25 Upper Brook St 655 - 2,555 SF of Office Space Available in London W1K 7QD

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HIGHLIGHTS

  • Grade II listed Mayfair Building
  • Period detailing & characterful features
  • Recently refurbished
  • Close proximity to Hyde Park

ALL AVAILABLE SPACES(3)

Display Rental Rate as

  • SPACE
  • SIZE
  • TERM
  • RENTAL RATE
  • SPACE USE
  • CONDITION
  • AVAILABLE
  • 3rd Floor
  • 1,010 SF
  • Negotiable
  • $129.91 /SF/YR $10.83 /SF/MO $131,207 /YR $10,934 /MO
  • Office
  • Partial Build-Out
  • 30 Days

The third floor comprises four interconnecting rooms - two spacious rooms and two smaller, adaptable spaces ideal for private offices or meeting rooms. One of the larger rooms includes a partitioned area that has historically served as a boardroom.

  • Use Class: E
  • Mostly Open Floor Plan Layout
  • Elevator Access
  • New contemporary lighting
  • Passenger lift
  • Partially Built-Out as Standard Office
  • Fits 3 - 9 People
  • Energy Performance Rating - B
  • Manned reception
  • 4th Floor
  • 890 SF
  • Negotiable
  • $119.92 /SF/YR $9.99 /SF/MO $106,725 /YR $8,894 /MO
  • Office
  • Partial Build-Out
  • 30 Days

Mayfair Penthouse Duplex to Let 4th and 5th Floors - 1,545 sq ft Situated in the heart of Mayfair, 25 Upper Brook Street is a distinguished Grade II listed office building offering boutique workspace with period charm. The available 4th and 5th floor suites have recently undergone a comprehensive redecoration, blending contemporary finishes with the building’s characterful architectural features.

  • Use Class: E
  • Mostly Open Floor Plan Layout
  • Can be combined with additional space(s) for up to 1,545 SF of adjacent space
  • Energy Performance Rating - B
  • Manned reception
  • Partially Built-Out as Standard Office
  • Fits 3 - 8 People
  • Elevator Access
  • New contemporary lighting
  • Passenger lift
  • 5th Floor
  • 655 SF
  • Negotiable
  • $119.92 /SF/YR $9.99 /SF/MO $78,544 /YR $6,545 /MO
  • Office
  • Partial Build-Out
  • 30 Days

Mayfair Penthouse Duplex to Let 4th and 5th Floors - 1,545 sq ft Situated in the heart of Mayfair, 25 Upper Brook Street is a distinguished Grade II listed office building offering boutique workspace with period charm. The available 4th and 5th floor suites have recently undergone a comprehensive redecoration, blending contemporary finishes with the building’s characterful architectural features.

  • Use Class: E
  • Mostly Open Floor Plan Layout
  • Can be combined with additional space(s) for up to 1,545 SF of adjacent space
  • Energy Performance Rating - B
  • Manned reception
  • Partially Built-Out as Standard Office
  • Fits 2 - 6 People
  • Elevator Access
  • New contemporary lighting
  • Passenger lift
Space Size Term Rental Rate Space Use Condition Available
3rd Floor 1,010 SF Negotiable $129.91 /SF/YR $10.83 /SF/MO $131,207 /YR $10,934 /MO Office Partial Build-Out 30 Days
4th Floor 890 SF Negotiable $119.92 /SF/YR $9.99 /SF/MO $106,725 /YR $8,894 /MO Office Partial Build-Out 30 Days
5th Floor 655 SF Negotiable $119.92 /SF/YR $9.99 /SF/MO $78,544 /YR $6,545 /MO Office Partial Build-Out 30 Days

3rd Floor

Size
1,010 SF
Term
Negotiable
Rental Rate
$129.91 /SF/YR $10.83 /SF/MO $131,207 /YR $10,934 /MO
Space Use
Office
Condition
Partial Build-Out
Available
30 Days

4th Floor

Size
890 SF
Term
Negotiable
Rental Rate
$119.92 /SF/YR $9.99 /SF/MO $106,725 /YR $8,894 /MO
Space Use
Office
Condition
Partial Build-Out
Available
30 Days

5th Floor

Size
655 SF
Term
Negotiable
Rental Rate
$119.92 /SF/YR $9.99 /SF/MO $78,544 /YR $6,545 /MO
Space Use
Office
Condition
Partial Build-Out
Available
30 Days

3rd Floor

Size 1,010 SF
Term Negotiable
Rental Rate $129.91 /SF/YR
Space Use Office
Condition Partial Build-Out
Available 30 Days

The third floor comprises four interconnecting rooms - two spacious rooms and two smaller, adaptable spaces ideal for private offices or meeting rooms. One of the larger rooms includes a partitioned area that has historically served as a boardroom.

  • Use Class: E
  • Partially Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • Fits 3 - 9 People
  • Elevator Access
  • Energy Performance Rating - B
  • New contemporary lighting
  • Manned reception
  • Passenger lift

4th Floor

Size 890 SF
Term Negotiable
Rental Rate $119.92 /SF/YR
Space Use Office
Condition Partial Build-Out
Available 30 Days

Mayfair Penthouse Duplex to Let 4th and 5th Floors - 1,545 sq ft Situated in the heart of Mayfair, 25 Upper Brook Street is a distinguished Grade II listed office building offering boutique workspace with period charm. The available 4th and 5th floor suites have recently undergone a comprehensive redecoration, blending contemporary finishes with the building’s characterful architectural features.

  • Use Class: E
  • Partially Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • Fits 3 - 8 People
  • Can be combined with additional space(s) for up to 1,545 SF of adjacent space
  • Elevator Access
  • Energy Performance Rating - B
  • New contemporary lighting
  • Manned reception
  • Passenger lift

5th Floor

Size 655 SF
Term Negotiable
Rental Rate $119.92 /SF/YR
Space Use Office
Condition Partial Build-Out
Available 30 Days

Mayfair Penthouse Duplex to Let 4th and 5th Floors - 1,545 sq ft Situated in the heart of Mayfair, 25 Upper Brook Street is a distinguished Grade II listed office building offering boutique workspace with period charm. The available 4th and 5th floor suites have recently undergone a comprehensive redecoration, blending contemporary finishes with the building’s characterful architectural features.

  • Use Class: E
  • Partially Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • Fits 2 - 6 People
  • Can be combined with additional space(s) for up to 1,545 SF of adjacent space
  • Elevator Access
  • Energy Performance Rating - B
  • New contemporary lighting
  • Manned reception
  • Passenger lift

PROPERTY OVERVIEW

Upper Brook Street is a prestigious address in central Mayfair, positioned just off Park Lane and a short walk from both Marble Arch and Bond Street stations. The area benefits from world-class amenities, luxury hotels, fine dining, and excellent transport connectivity.

  • 24 Hour Access
  • Raised Floor
  • Security System
  • Storage Space
  • Air Conditioning

PROPERTY FACTS

Building Type
Office
Year Built
1734
Building Height
7 Stories
Building Size
7,601 SF
Building Class
B
Typical Floor Size
1,053 SF

SELECT TENANTS

  • FLOOR
  • TENANT NAME
  • INDUSTRY
  • 1st
  • Camellia Plc
  • Agriculture, Forestry, Fishing and Hunting
  • 2nd
  • Gateway Property Management
  • -
  • 1st
  • IQ EQ GROUP SUPPORT (UK) LIMITED
  • Professional, Scientific, and Technical Services
  • 5th
  • Ombu Group
  • Professional, Scientific, and Technical Services
  • 1st
  • P G S Private Office
  • -

ATTACHMENTS

Brochure
  • Listing ID: 37801306

  • Date on Market: 11/25/2025

  • Last Updated:

  • Address: 25 Upper Brook St, London W1K 7QD

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