Office Fit Out

We’re one of London’s leading office fit out companies, transforming workspaces from concept to completion, creating inspiring environments that reflect your brand and drive productivity.

  • 21+ Years in Business
  • 12–20 Weeks Typical Programme

Our Approach

At K2 Space, we specialise in office fit-outs across London, transforming empty spaces into functional, beautiful workplaces. With over two decades of experience, our in-house design and build team handles every stage; from design and costing to construction, furniture installation, and handover.

Whether you’re fitting out a new space, upgrading an existing office, or preparing for hybrid working, we provide a single, accountable partner who delivers on time, on budget, and with no disruption to your business.

office design & build
furniture experts

Our Office Fit Out Process

PJT Partners Fit Out at One Curzon Street

K2 Space partnered with PJT Partners, a leading global investment bank, to design and fit out their London headquarters at One Curzon Street in Mayfair. As part of a decade-long relationship delivering multiple phases of the building, K2 was asked to design and fit out the second floor, extending the refined aesthetic of the existing floors while introducing a broader mix of workspace settings.

Spanning 60,000 sq. ft., the design takes its influence from PJT’s New York office, with light woods and neutral tones that support the strong task focus of the business. The reception sets the tone immediately: a sweeping timber ceiling feature with integrated LED lighting curves above a marble-clad desk, with a seating area beyond that feels more private members’ club than corporate lobby.

At the heart of the floor is a café and lounge zone that doubles as the firm’s social hub. A curved oak-slatted wall wraps the tea point on one side while creating an intimate lounge on the other, with banquette seating and espresso machines set beneath an arched timber surround. Breakout spaces like these were central to PJT’s way of working, encouraging the informal meetings and social interaction that matter in an advisory business.

The transition from social to focused zones is deliberate, with pale oak walkways giving way to woven carpet tiles as the environment quietens. Glass-fronted private offices line the perimeter, each with its own informal meeting setting, while meeting rooms fitted with the latest conferencing technology connect teams across PJT’s global offices.

PJT Office Fit Out London - LARGE-39

We had a vision of a new office space that supports modern ways of working, inspires our team, and leaves a lasting impression on our clients. K2 Space took our dream and turned it into a masterpiece. The transformation they've performed is nothing short of extraordinary. We're over the moon with the result - expertly executed!

Senior Vice President Real Estate

PJT Partners

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PJT Partners | London, Mayfair | Size 60,000 sq. ft. | D&B and Furniture Consultancy / FF&E

Bringing "One Dentsu" to Edinburgh's Princes Street

K2 Space partnered with Dentsu, one of the world’s largest integrated marketing and communications networks, to design and fit out their Edinburgh office at The Stamp Office on Princes Street. The brief was to bring multiple teams under one roof in a space that embodied the “One Dentsu” philosophy, while respecting the character of a listed Georgian building that has stood on Edinburgh’s central thoroughfare since 1819.

Spanning 7,000 sq. ft., the open-concept layout uses the building’s natural zoning to give each team its own identity without fragmenting the floor. K2 worked closely with the local team to develop a design brief that balanced the needs of individual groups with a cohesive visual language, integrating period features rather than working against them. Soft pastels and considered lighting run throughout, grounding the space in a palette that feels contemporary without competing with the classical architecture.

Sustainability shaped the project from the outset. In line with Dentsu’s ERG guidelines, as much furniture as possible was reused, with some pieces sourced from other Dentsu UK sites to minimise waste and extend asset lifecycles. K2 integrated these items so seamlessly that the space reads as entirely new. Modular meeting pods were specified for acoustic privacy and future flexibility, allowing the layout to evolve without costly demolition or construction.

Client visits are central to how Dentsu works, so the space needed to welcome external partners into the creative process. A reception area on entry sets the tone, while a bright lounge and workshop space on the small mezzanine gives teams a semi-private zone for developing client-specific campaigns, connected to the wider floor but with enough separation to focus. An elegant coffee area doubles as an informal meeting zone, giving the team somewhere to step away, recharge, and connect with colleagues and clients outside of their immediate workspace.

Dentsu_Office_Fit_Out_Large-9

Inspiring and Sustainable Office Fit-Out for DTRE in London’s Mayfair

K2 Space partnered with leading property advisor DTRE to deliver an inspiring and highly sustainable office fit-out in the heart of London’s Mayfair. Spanning 11,000 sq. ft., the project was driven by a vision to create a space that would energise employees, impress clients, and embody DTRE’s forward-thinking approach to property and sustainability.

The new workplace achieved a BREEAM “Very Good” accreditation, the highest level attainable within the building, through meticulous monitoring of energy, water, waste, and supply chain processes. With features such as extensive biophilic design elements, a client “touch-down” area, an auditorium with bleacher seating, and a barista-style reception, the space combines functionality, flexibility, and wellbeing in perfect harmony.

Bistro-Style Reception Areas - DTRE

It was a pleasure working with the K2 team again. This was a complex project and timeframes were tight – once again we are truly delighted with our inspirational new office and look forward to continuing our relationship into the future

Natalie Barone

Equity Partner, DTRE

What is an Office Fit Out?

An office fit-out is the complete process of transforming a raw or outdated space into a fully functioning workplace, designed around how your people actually work. It covers everything from space planning, partitioning, and M&E infrastructure through to finishes, furniture, and technology, turning an empty shell or tired office into an environment that supports productivity, culture, and growth.

The scope and investment of a fit-out depend on where you’re starting from. A shell-and-core space needs everything from the ground up. A Cat A fit-out delivers the base-build essentials: raised floors, suspended ceilings, basic mechanical and electrical services. A Cat B fit-out is where the space truly becomes yours: the layout, branding, meeting rooms, breakout areas, and all the details that reflect how your team operates day to day.

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WHY LONDON BUSINESSES CHOOSE K2

London Office Fit Out Expertise

London’s commercial property market moves fast and demands precision. Tight build programmes, landlord approvals, listed building constraints, complex M&E in older buildings, and multi-floor, phased installations while teams stay operational are just some of the realities of fitting out offices in the capital.

K2 Space has been delivering office fit-outs across Central London since 2003. We work with occupiers, landlords, and property advisors to create workplaces that attract talent, support productivity, and reflect the standards your clients and people expect.

  • Cat A and Cat B fit outs
  • Design & build under a single contract with one team, one point of accountability
  • Occupied refurbishments with phased delivery to minimise disruption
  • Furniture procurement as a MillerKnoll Certified Dealer
  • Aftercare and ongoing facilities support post-handover
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Office Fit Out Across Central London

PJT Partners office design by K2 Space in Mayfair

Mayfair & St James’s

Mayfair and St James’s have become our busiest client base in London, and a location where we thrive. From boutique financial services and private equity to asset management and family offices. We deal with all sorts of projects here, from working with Grade II-listed buildings and high-specification finishes to the kind of discreet project delivery these clients expect. Recent projects include PJT Partners and Eastdil Secured.

William Blair office design by K2 Space

City of London

The City has consistently been one of our most active areas, and the variety of work keeps us interested. From global banks, insurers, and international law firms across the Square Mile, we’re used to the realities here of large floor plates, complex M&E in older buildings, and 24/7 build programmes to hit tight lease deadlines. Clients here include William Blair and Latham & Watkins.

Roald Dahl office design London by K2 Space

Fitzrovia & Marylebone

Fitzrovia and Marylebone have become a real stronghold for us, with a client mix that leans heavily toward media, creative, and tech. The briefs tend to be design-led with exposed services, flexible layouts, and workplaces that genuinely help attract and keep talent. We’ve delivered projects here for Netflix, Adobe, Dentsu, and Roald Dahl.

Beats office design by K2 Space in Clerkenwell

Clerkenwell & Shoreditch

With our offices in Islington, Clerkenwell and Shoreditch is close to home turf. Over the years, we’ve built up a solid track record across this corridor and love working with character buildings and occupiers who want a workspace that says something about their brand, not just a functional office space. Our projects here include Beats, Snap Inc.

Criteo global office design by K2 Space

Midtown & Holborn

Legal sector heartland and part of London’s growing tech belt, Midtown & Holborn form a large part of our workload. Traditional firms are modernising their workspace to compete for talent, and we’re seeing more professional services firms relocating here from traditional City addresses. A lot of the work is phased refurbishments in occupied buildings, where keeping the business running matters as much as the end result. Recent clients here include Criteo and Vouchercodes

Rolls-Royce office design by K2 Space

Victoria & Westminster

Government adjacency, corporate headquarters, and NGOs. These are established occupiers who need workplaces that balance profile with practicality, and a delivery partner who understands the scrutiny that comes with it. In the heart of SW1, our clients include Rolls-Royce & Partners Finance, IMSO, and BMO.

— MARKET CONTEXT

The London Office Market in 2026

If you’re planning a London office fit out this year, you’re not alone. The market is in genuine recovery and the drivers are structural. Read our full London office market overview.

74%

Grade A Leasing

74% of London leasing in 2025 was Grade A space – a record. Occupiers are choosing quality, and fit out standards are rising with them.

1. JLL, Central London Office Market Report Q4 2025

31%

Financial Services

Insurance and financial services accounted for 31% of Central London take-up in 2025, and the demand is accelerating into 2026.

2. Savills, London Office Market Update, January 2026

55%+

Sub-10k Sq Ft Deals

Over 55% of West End transactions were under 10,000 sq ft – exactly the project size where a single design & build partner makes the most sense.

3. CBRE, West End Office Market Review 2025

80%

MEES Compliance Gap

Around 80% of London’s office stock sits below the EPC B threshold required by April 2030. Thousands of landlords and tenants will need fit out works to comply.

4. British Property Federation / Carbon Trust, EPC Readiness in Commercial Property, 2025

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Get in Touch and Let's Transform Your Workspace!

Are you ready to elevate your workplace to new heights? We’re here to make it happen! Connect with our team of seasoned office design and fitout experts to collaboratively create an inspiring workspace that aligns perfectly with your vision.

Send a message

We would love to hear how we can assist you in designing and building an amazing new workplace.

Please give us a brief description of your project.

— COST GUIDANCE

London Office Fit Out Costs

London fit out costs vary by specification, building condition, and scope of M&E works. Here are benchmark figures for 2026.

BASIC

~£90

per sq ft

Shell improvements, basic partitioning, standard M&E, carpet and paint. Suitable for short-term leases or budget-conscious occupiers who need functional space quickly.

MID-LEVEL

~£135

per sq ft

Full Cat B fit out with bespoke joinery, AV integration, quality finishes, branded reception, and kitchen. The most common specification for professional services firms in London.

HIGH-SPEC

£190+

per sq ft

High-end design, specialist materials, advanced AV and acoustic treatment, bespoke furniture, and feature lighting. Financial services, legal, and luxury occupiers in Mayfair and the City.

Includes construction, AV and furniture. Based on recent London projects.

Read Our Full Cost Guide

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