Office Fit Out London

Office Spaces delivered by Fit Out & Refurbishment Specialists

Faction Interiors delivers commercial office fit outs across London — from the City and Canary Wharf to Southwark, Shoreditch, Clerkenwell and the wider zones. We bring the trade depth of a specialist contractor and the personal service of a regional firm, without the overhead of a large London practice.

Based on the South Coast with an established London presence, we work with businesses relocating to new offices, landlords preparing spaces for new tenants, and developers commissioning Cat A works across the capital. Every project is managed by our own teams — partitioning, glazing, ceilings, carpentry and joinery handled directly, not subcontracted out.

Cat A Fit Out

Shell-to-occupiable, for landlords and developers preparing a space for market

Cat B Fit Out

Fully fitted workplace tailored to your team, brand and way of working

Space Planning and Interior Design

Space planning and design is the foundation of any successful office fit out. Before a single partition goes up, we work with you to understand how your team uses space. How you collaborate, focus, meet and move, and translate that into a layout that makes your office work harder for your business.

Office Refurbishment

Upgrading an existing space without a full strip-out; ideal for lease renewals and partial reconfigurations

Design & Build

Design and build means a single contract, a single point of responsibility, and no gap between what's drawn and what gets built. We handle design, specification, procurement and construction under one roof so there's no finger-pointing between a designer and a contractor when decisions need to be made on site.

Phased fit out

Staged delivery so you can stay operational throughout the works

What is an Office Fit Out?

An office fit out is the process of transforming an empty or underused commercial space into a fully functioning workplace. It covers everything from partitioning, ceilings and floor finishes through to lighting, joinery, kitchens and MEP depending on your specification and starting point.

How Much Does an Office Fit Out Cost in London?

Office fit out costs vary depending on specification, condition of the space, and scope of works. As a general guide for London:

Cat A (shell to occupied)

£40 - £70 per Sq Ft

Cat B (basic to mid-spec)

£45 - £75 per Sq ft

Cat B (high spec, bespoke joinery, AV)

£75 - £125 per Sq ft

Factors that affect cost in London specifically:

Building management requirements (some buildings in the City and West End carry significant management fees and access restrictions)
Out-of-hours working — many London buildings require deliveries and noisy works outside core hours, adding programme and cost
Floor level and access — high-rise or basement projects carry logistics costs that ground-floor projects don't
M&E complexity — older London commercial buildings often have ageing mechanical and electrical infrastructure that needs upgrading
Specification level and bespoke content

The most reliable way to get a project-specific figure is to use our fit out cost calculator, or get in touch for a free consultation.

Why Choose Faction for Your London Office Fit Out?

London has no shortage of fit out contractors. The large nationals (Overbury, Morgan Lovell, Oktra, ISG) dominate the corporate end of the market and do excellent work on large-scale, high-complexity projects.

But for businesses looking for a more direct relationship, trade-led delivery and genuine value, Faction offers something different.

We bring our own trades.

Our teams handle partitioning, glazing, ceilings, carpentry and joinery directly. That means tighter quality control, fewer coordination failures on site, and a single point of accountability throughout the project — not a management contractor managing a chain of subcontractors.

You deal with decision-makers, not account managers.

With the large nationals, your day-to-day contact is often a project coordinator, not the people making decisions. At Faction, you have a named project manager with the authority to act, and direct access to the people running the job.

Competitive on cost without cutting corners.

Our overhead structure is leaner than a large London practice. That saving is passed on — you get the same quality of finish and the same level of project management at a more competitive price point.

South Coast to Central London — without the gap.

We work seamlessly between London and the South Coast, which makes us particularly well-suited to businesses with offices in both locations, or developers and landlords with a portfolio across the two markets. One contractor, consistent delivery, wherever the project is.

We're not just an office fit out company.

Faction also delivers industrial and hospitality fit outs — so if your business operates across different premises types, or you're a developer with a mixed portfolio, we can handle all of it.

Where We Work in London

We deliver office fit outs across Greater London, including:

City of London (EC1-EC4)

Financial, legal and professional services offices; landlord Cat A works

Canary Wharf & Docklands (E14)

Corporate offices, financial sector and media company fit outs

Shoreditch & Clerkenwell (EC1/EC2)

Design-led Cat B fit outs for creative, technology and media businesses

Victoria & Westminster (SW1)

Government, public sector and professional services offices

Paddington & Marylebone (W1/W2)

Corporate headquarters and professional services offices in the West End

Vauxhall & Nine Elms (SW8)

Rapidly growing commercial district; new-build offices and Cat A works

We also work across the South East from our Worthing base — including Brighton, Chichester, Crawley, Horsham, Southampton, Portsmouth and the wider Hampshire and Sussex market.

Our Office Fit Out Process:

We listen to your brief, review the space, and give you honest feedback on what's achievable within your budget and programme. No charge, no commitment required.
Our design team produces layout options, 3D visuals and a full specification. You approve the design before we price it — there are no surprises later.
We price from the agreed specification, line by line. No allowances, no provisional sums that balloon later. You know exactly what you're getting and what it costs.
Programme, logistics, building management liaison and procurement planned in detail before works start. In London, this stage is particularly important — building access, delivery windows and out-of-hours requirements all need to be confirmed early.
Our site team and specialist trades deliver the works. You have a named project manager as your single point of contact from start to handover.
Snagging completed, all health and safety documentation issued, and a post-handover period to make sure everything is performing as it should.

Let’s work together

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