Office Fit Out Contractors in London
Your office, designed and built by one team, from bare floor to the morning your staff sit down. Every project we have delivered has finished ahead of programme and on budget.
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Our office fit out services
An office fit-out turns a floor into a place people can work: partitions, ceilings, lighting, power and data, heating and cooling, kitchens, meeting rooms, finishes and furniture. In London that is only half the job. Most offices here are leased floors in multi-let buildings, so the landlord, the building's fit-out rules and the tenants around you shape the programme as much as the design does. We plan for both from the first visit.
Most commercial office fit out projects we price are a mix of the five below. Each comes with a real Craftex project, so you can see what it looked like in practice.
Cat A fit-out
Cat A is the base layer: raised floors, suspended ceilings, lighting, the main mechanical and electrical services and basic finishes. Landlords order it to let a floor; tenants take it on when they lease a shell. At Portsoken House in Aldgate two floors of a former warehouse needed exactly this before anything else: a full M&E package, a new ceiling and levelled concrete floors.
Cat B fit-out
Cat B is everything that makes the space yours: the layout, meeting rooms, kitchens and breakout areas, power and data to every desk, branding and furniture. At Beaumont House we used frosted glass partitions to create private meeting rooms inside an open-plan floor, ran under-floor data to every workstation and fitted CCTV and access control. Not sure which you need? Read Cat A vs Cat A+ vs Cat B and the overview of types of office fit-out.
Design and build
One contract and one point of contact, from the first layout to handover. Our team does the office design and space planning, prices it, builds it and hands it over, so there is no gap between a designer's drawings and a builder's price. More on how we run design and build and construction project management.
Office refurbishment
For an office you already occupy, or a tired floor you have just taken. Beaumont House in High Street Kensington was a rundown 750 sq m office: we demolished walls to open the floor up, replaced lighting and wiring throughout, put in a new kitchen and redecorated in a calm monochrome palette, in three weeks on site. See our wider commercial fit-out services.
Fit-outs in occupied buildings
Many London fit-outs happen while the rest of the building is working, or around a business that cannot close. We plan noisy work for nights and weekends and phase the programme so your team and your neighbours carry on. At Portsoken House we rebuilt the 70 sq m reception in 12 weeks working only at night and at weekends, and on Savile Row we refitted Drake's flagship store in 12 weeks while it kept trading.
What a Craftex office fit-out can include
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Survey, space planning and design
Layouts built around how your team works, priced by the people who will build them.
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Cat A and Cat B works
Partitions and glazed meeting rooms, ceilings, flooring, lighting, power and data, kitchens and WCs.
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Strip-out and structural changes
Demolition, new openings and rebuilt lift surrounds, with mechanical and electrical services to suit.
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Joinery, storage and mezzanines
Reception desks, bespoke joinery, storage, racking and mezzanines where the space allows.
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Fire strategy and compliance
Designed to the building's fire strategy and Building Regulations, with CCTV and access control.
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Energy and sustainability
Efficient systems and materials, see sustainable fit-outs. Then furniture, the move and aftercare.
Case studies
How we deliver your office fit out
We look at the floor, the lease and the building's fit-out guide, and ask how your business actually works: team size, how people meet, what has to stay running. That shows where space is being wasted before we draw anything.
We produce the layout and design, then price it as a lump sum against a clear scope, so your spend is predictable and easier to sign off. Planning a layout? Our guide to office space planning explains what goes into it.
Most leased London buildings need the landlord's written consent first, usually a Licence for Alterations, backed by drawings, a specification, method statements and risk assessments. Fit-outs also usually need Building Regulations approval, must work with the building's fire strategy and fall under CDM 2015. Build this approval period into your move-in date.
Around 70% of our labour is in-house, which gives us tighter control of quality and programme. Our project managers run weekly quality checks, and the programme is built around your operations, with night shifts, weekend working and phasing where needed.
We don't leave site until every snag is closed. At Beaumont House we also moved the client's furniture into the finished office. Common pitfalls are in problems during office fit-out; moving premises? Use the office relocation checklist.
What does an office fit-out cost in London?
It depends on the size, the specification, the mechanical and electrical scope and the condition of the space. Rather than quote a market rate, here is what our own London workspace projects cost, as published in each case study.
| Project | Work | Size | Value | Time on site |
|---|---|---|---|---|
| Beaumont House, High Street Kensington | Open-plan office refurbishment | 750 sq m | £350K | 3 weeks |
| Portsoken House, Aldgate | Warehouse-to-office conversion, full M&E | 1,550 sq m | £2.2M | 7 months |
| Portsoken House reception, Aldgate | Structural changes, Italian stone, bespoke joinery, night working | 70 sq m | £450K | 12 weeks |
| Drake's, railway arch | Offices, studio, production and storage in a self-supporting build | 500 sq m | £200K | 8 weeks |
Why the spread is so wide: Beaumont House was a refresh of a working office; Portsoken House rebuilt services from scratch in an empty warehouse; the reception is a small, high-finish space built only at night. Condition, services and working hours move the price more than floor area does.
Our office fit-out cost guide explains what drives the price per square foot. We take on office fit-outs from £100,000 to £10M+.
Why businesses choose Craftex over other office fit out companies in London
Every project we have delivered has finished ahead of programme and on budget. When the Beaumont House client had five weeks left on their lease and more than 150 staff to move, we were on site two weeks after the first call and finished in three.
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One team, one contract
Design and build under one roof: one point of contact from concept to handover.
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Lump-sum price, clear scope
You know the number before you sign, so sign-off is easier.
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Your business keeps running
Night shifts, weekend working and phased programmes, proven at Portsoken House and on Savile Row.
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Around 70% in-house labour
Less waiting and tighter control of quality and programme.
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Insured and certified
ISO and CHAS. Public and employers' liability cover of £10M each.
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Zero-snag handovers
Weekly quality checks by our project managers; snags are closed before you move in.
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What our clients say
See all reviews on Google-
Hired Craftex for our conversion project. We had to convert a 600m2 office into 8 apartments. Guys did an excellent job in terms of program efficiency and quality of the finishes which gave us a big upside to exit the project 2 months faster than other competitors’ timelines.
Misha Levit
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Great experience from start to finish. Communication was clear, the workmanship was excellent, and the whole project was managed professionally.
Rhea Langford
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I’d like to thank the team at Сraftex for the work they did on our office.
It was really important for us to get the work done quickly, but without compromising on quality, as we regularly have clients and guests visiting and needed to move into the new office within a month.
We spent around two weeks discussing and agreeing all the details before the work started. What I really appreciated was that everything we agreed beforehand was actually followed through during the job. The work was also completed on time.
Thanks to the whole Сraftex team for a great job. I’d definitely use them again if we need any work done in the future.IURII PYLYPETS
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We recently worked with Craftex and honestly couldn’t be happier with the results. From start to finish, the team was professional, reliable, and highly skilled. The quality of workmanship exceeded our expectations, and everything was completed on time and to a very high standard.
Communication throughout the project was excellent, and they always went above and beyond to make sure we were satisfied. It’s rare to find a construction company that combines professionalism, attention to detail, and great customer service so well.
Without a doubt, Craftex is one of the best construction companies we have ever worked with. Highly recommended to anyone looking for quality and trustworthy builders.Adam Miah
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Craftex has completed a range of both small and large-scale projects on our commercial property with exceptional precision and quality. Dmitriy consistently delivers courteous, prompt service and has shown great flexibility in accommodating last-minute changes to plans and timelines. I highly recommend Craftex for their professionalism and outstanding workmanship.
Pascal Hunt
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Great company to work with as always. Super flexible at dealing with evolving requirements and fast deployment and execution.
Akshay Khanna
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Hired Craftex to do the full design and fit out of my gym in Chelsea. Super efficient and fast team. They gave the best price and a proper fast track program. We managed to open in less than 6 weeks with no headaches or surprises during construction. Quality was great, we had zero snags on completion. I’ve worked with a few companies before but these guys really impressed me from project management to how they treat the client. Top GGs.
Александр Хоменко
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I worked perfectly with Sviat and Joe, with their architect they came up with a very smart design for our office to fit more desks and optimise the space to its maximum capacity. They also did excellent value engineering on the MEP design proposed by others, allowing us to save around £50K. The quality and speed were outstanding we finished two weeks ahead of schedule. Highly recommend these guys.
John Smith
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Happy with the end result. Tight timeline but they pulled it off. The team worked late shifts and even weekends to help us open the doors on schedule. Site was always left tidy at the end of the day and no surprise charges either. Good communication throughout. Would definitely use Craftex again.
Pawel Kamionka
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Highly recommended!
Craftex are the kind of fit-out contractors in London you can truly trust. From the very first meeting, they understood our vision and gave practical ideas to make the most of our space. They turned our old storage area into a clean, efficient, and well-organized warehouse. The team was professional, easy to work with, and clearly took pride in their work.Monika Kamionka
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We brought in Craftex to refurb our London office and honestly, they made the whole thing way easier than we expected. They listened, suggested ideas we wouldn’t have thought of, and explained everything clearly. Not the cheapest quote we got, but the end result shows why, the place looks modern, clean, and our team actually enjoys being here now. Communication was spot-on too. No chasing and confusion, deadlines were hit. If you want people who genuinely care and don’t treat your project like “another job,” I’d recommend them.
A Google User
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Sviat and his team at Craftex were brilliant to work with on our office redesign. From the first meeting, they took the time to understand how we actually use the space rather than just pitching generic solutions. They came back with clever, practical ideas to maximise use of the space and get more employees and desks inside . Every step was handled professionally, and the process felt surprisingly smooth for a project of this size. They finished one week ahead of schedule, and the transformation is clear — our office feels brighter, more functional, and much more welcoming. I’d happily recommend Craftex to anyone who wants a reliable design team that also makes the journey enjoyable.
Cucu Iulian
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We recently worked with Sviat and the Craftex team on a complete warehouse refurbishment, and the results have been outstanding. From the very beginning, their team was professional, organized, and attentive to every detail. The project was completed on time and within budget, without disrupting our day-to-day operations.
Simone Racaku
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My experience with Craftex was excellent from beginning to end. They took the time to really listen to what I wanted and then offered practical suggestions that made the design even better. I always felt like they cared about creating a space that worked for me, not just one that looked nice on paper. The end result is an office that feels stylish, welcoming, and very functional for day-to-day work. The process itself was straightforward, well-managed, and never stressful. I’d definitely recommend Craftex if you’re looking for office design and build services in London — they made the whole journey a positive one.
Ion Bounegru
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I’m really pleased with my experience working with Craftex. As a commercial construction firm, they handled everything from start to finish without any unnecessary stress on my side. What impressed me was how they suggested practical ideas that improved the design while also keeping things realistic. The communication was always clear, so I never felt out of the loop. The project ran smoothly, deadlines were met, and the end result is exactly what I was hoping for — a space that feels both functional and modern. It’s not easy finding contractors who are this reliable, but Craftex definitely proved they can be trusted.
Taron Papoyan
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I had an amazing experience working with Sviat and the Craftex team on our office fit-out in London. They were always professional, responsive, and quick to offer the best advice whenever decisions needed to be made. I really appreciated how they balanced style with practicality — the office doesn’t just look fantastic, it works perfectly for our team. Everything was done with care and attention to detail, and the project never felt overwhelming because they managed it so well. Communication was clear from start to finish, and I always felt involved in the process. I would happily recommend Craftex to anyone looking for a trustworthy contractor.
Artur Dvorak
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Craftex carried out a warehouse fit-out for us, and I couldn’t be happier with the outcome. The space has been completely transformed into a highly organized and efficient environment that makes our daily operations much smoother.
The team was professional but also very approachable — I always felt comfortable asking questions or giving feedback. They came up with smart, practical solutions that worked perfectly for our setup, and everything was explained clearly along the way.
The best part was how they stuck to the agreed timeline, finishing on schedule without cutting corners. It’s rare to get both quality and reliability, but Craftex delivered both.Roma Shchukin
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We’re extremely happy with Sviat and the Craftex team’s work. They suggested clever ideas, managed the project efficiently, and delivered a functional, modern space. The team was easy to communicate with and very professional throughout the process!
Polina Lysenko
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I can honestly say our office has been completely transformed thanks to Craftex. From the very first meeting, the team was approachable, professional, and full of creative ideas that really made sense for our business. They didn’t just focus on how the space would look but also how it would work for the team day-to-day. The new layout is efficient, modern, and welcoming, and you can tell they really thought about the details. The whole process was smooth and surprisingly stress-free. They kept me updated at every stage, which gave me confidence. I’m really happy with the results and wouldn’t hesitate to recommend them to anyone.
Mykyta Khadzhynov
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The results from Craftex’s commercial refurbishment in London are fantastic. The team was friendly, clear in communication, and made sure the project stayed on track. The workspace now feels efficient, welcoming, and modern. Definitely a team you can trust!
Alaa Betar
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We hired Craftex for a commercial ground floor fit-out with 2 flats above. There were some minor co-ordination hiccups with third-party suppliers but the team kept it moving. Finish quality was strong. Kitchens and doors look great. I have already asked them for a quote on the next project.
Ben Edell
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These guys actually deliver. They handled our first industrial to residential conversion near Tower Bridge, turned an old warehouse into 4 modern flats. They stuck to the plan, kept the site clean and the timing was on point. No hidden extras, no drama, just a professional construction company in London that gets the job done.
Богдан Главацкий
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We recently hired Craftex for a commercial office fit-out project in Central London, and overall, we’re really happy with the result. There was a delay on our side with a custom glass partition supplier, but the Craftex team managed the construction schedule very professionally and kept everything on track. Their guys worked clean, respected our workspace and IT setup, and kept the site tidy throughout. If you're looking for a reliable office refurbishment company in London, I’d definitely recommend Craftex. Would use them again without hesitation.
Ardian Beleshi
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This was a full high-end renovation of my Victorian rental apartment in Westminster, just off Sloane Square and Belgravia. The scope included full fit-out: electrics, plumbing, a new bespoke kitchen, and a luxury bathroom refurbishment. Craftex took care of everything and made the process easy. They weren’t the cheapest, but you can tell they really know what they’re doing when it comes to prime London property renovations.
The team was professional, organised, and genuinely seemed to care about getting everything right. I was especially impressed with the quality of the finish – the attention to detail really shows in every corner.
I’m very happy with the results and would definitely recommend Craftex to anyone looking for reliable, high-quality renovation work in Central London.Наталия Цимбалюк
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I was stressed about timing since we had bookings lined up, but they smashed it. Even worked Saturday to finish the floor. My clients love the look — the beauty salon fit-out turned out exactly how I wanted. Couldn’t have pulled it off without their help. Genuinely appreciate the way they communicated throughout the refurbishment. If you need reliable help with beauty salon design or fit-out, especially in a place like Chelsea — these are the guys.
Rami Jusupova
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We used Craftex for a shop-to-flat conversion in Chelsea — turning an old retail space into two rental units. Access wasn’t the easiest, but the guys handled it well, no drama. Quote was clear, no hidden extras, and they actually stuck to it, which is rare. Finish came out solid, exactly what we needed for rentals. Joe (PM) kept things ticking and communication was always on point. All in all, smooth job — would use them again for sure.👍
Apartify Estates
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Fuse Energy hired Craftex on the fit-out and installation of our engineering and research centre, which included electrical, heating, lighting, plumbing, and ventilation upgrades. They delivered everything to a high standard and were proactive throughout — even working weekends to help speed up the programme, despite not being contracted to. They managed last-minute changes very well, communication was clear and consistent, and the team was professional from start to finish. We’d happily recommend Craftex to anyone needing a reliable construction partner.
Hainro Eybers
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Holistic therapy space fit-out
Super impressed. I had a very specific vision for the studio. calm tones, soft lighting, hidden storage etc. the craftex team just got it. build was done quicker than I expected and the guys were polite, tidy and actually listened. we had 2 snags on day one but they fixed it before the week was out. worth it for the peace of mind.Dariia Shvyryda
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Made a full refurbishment and redesign of our Central London office. Fantastic work, quality service and reliable people. Can recommend it to everybody
Nikita Nigai
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Amazing experience with these guys. I trusted them my apartment in London and Business. They are always accurate, very professional, responsive and neat. They would always advice me right things for my best interest. I had luxury experience with them and I would definitely recommend Craftex to everyone.
Motush Motushev
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Could not be HAPPIER with Sviat and the Craftex team, they certainly showed me that they’re the number one office design company in London that we’ve had the pleasure of working with. They gave us a unique design just like we wanted, and we loved the first initial draft of the concept. Also have to give them props for Construction, I gave them a tight timeline as we needed to move our team in ASAP, so they pulled double shifts and I didn’t see a drop in quality. Will be to talking to the team when we move up to our next bigger office. Highly recommended A+++
Mikhail Burdoev
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Very professional company. Craftex did brilliant minimalistic design and completely refurbished my apartment to the highest quality.
Vlad
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I and my husband are very satisfied with Craftex's service and customer support. We bought a house in Hampstead and wanted to redesign and renovate it. On our initial free consultation with Sviat, we found out that we actually can do loft conversion and rear extension and add value to the property straight away.
We worked with the Craftex design team to bring our vision to life and deliver planning approvals. At that time guys started stripping out to save time on the construction programme as we wanted to move in ASAP.
We worked with very experienced project director Konstantin who was responsible for all aspects of project delivery from design to construction with a very good eye on details and customer care.
We saved a lot of money by having professional advice from the start. Project management and quality at Craftex are at the highest level. Many thanks to Craftex Team.Lia Lavryk
Independently Certified Contractor for Quality, Safety & Reliability
Office fit-out across London: the areas we work in
Every part of London brings different buildings, landlords and rules, and these shape the programme and cost of an office fit-out before any design is drawn. We run projects across central and west London from our office on Buckingham Palace Road. Below is what usually matters in each area, with links to our local pages and the Craftex projects nearby.
Near: Drake's, Savile Row
Mayfair (W1)
Headquarters offices in Georgian townhouses and period buildings. Most are listed or in a conservation area, and many freeholds sit with estate landlords, so we plan for listed building consent and estate approvals before work starts.
Our office: Buckingham Palace Road
Westminster & Victoria (SW1)
Larger office floors around Victoria Street alongside period buildings in conservation areas. We work to landlord fit-out guides and schedule noisy work out of hours when the building is occupied.
Office fit-out in Westminster →
Office fit-out in Victoria →
Case study: Beaumont House
Kensington (W8)
Office refurbishments in converted period buildings with tight access. At Beaumont House we delivered an open-plan office with meeting rooms: £350K, 750 sq m.
Office fit-out in Kensington →
Beaumont House case study →
Area guide
Marylebone (W1)
Period office buildings and mansion blocks, much of it held by large estate landlords. A landlord's licence for alterations and estate sign-off usually set the start date, so we prepare the drawings and method statements they ask for.
Office fit-out in Marylebone →
Area guide
Canary Wharf (E14)
Grade A towers handed over at Cat A, so most projects are Cat B fit-outs. Estate rules on access, deliveries and working hours are strict, and we build the programme around booked loading bays and out-of-hours work.
Office fit-out in Canary Wharf →
Near: Medusa, Knightsbridge
Knightsbridge & Belgravia (SW1/SW3)
Boutique offices, clinics and showrooms in townhouses on estate-owned streets. Expect estate consent, conservation-area rules and close attention to neighbours.
Fit-out in Knightsbridge →
Fit-out in Belgravia →
Case study: Portsoken House
City fringe & Aldgate (E1/EC3)
Warehouse and older commercial buildings converted into modern offices. Portsoken House in Aldgate was a full warehouse-to-office conversion with full M&E: £2.2M, 1,550 sq m, 7 months.
Area guide
Islington (N1)
Loft and warehouse-style offices for creative and professional firms, often with exposed services and older structures that need surveying before the layout is fixed.
Area guide
Hammersmith, Chiswick & Battersea
Modern office buildings and newer developments in west and south-west London, where most work is Cat B fit-out or refurbishment of existing floors.
Hammersmith →
Chiswick →
Battersea →
Planning a budget? See our office fit-out cost guide (£ per sq ft), the difference between Cat A and Cat B office fit-out, or all Craftex case studies. Working outside London? We also cover Surrey and major UK cities.
For workspace beyond the office, our Drake's railway-arch conversion, the Banbury warehouse and Medusa in Knightsbridge show the same approach.
Free Office Fit-Out Guide & Checklist
Plan your London office design with ease. Get a simple checklist covering budget, timelines, design, and compliance—helping you avoid mistakes and stay on track
Office fit out London: frequently asked questions
How long does an office fit-out in London take?
It depends on floor area and scope. On our recent London projects, a 750 sq m office refurbishment at Beaumont House took 3 weeks on site, a 70 sq m high-specification reception at Portsoken House took 12 weeks, and a 1,550 sq m warehouse-to-office conversion took 7 months. Allow time before site work for survey, design and landlord approval.
What does an office fit-out include?
Anything from new ceilings, lighting and flooring to a complete rebuild: partitions and meeting rooms, power and data to every desk, heating and ventilation, kitchens and WCs, reception joinery, furniture and signage. The list under "What a Craftex office fit-out can include" above is what we deliver.
Do you deliver both Cat A and Cat B fit-outs?
Yes. We cover everything from Cat A infrastructure to Cat B finishes, including ceilings, lighting, flooring, M&E, joinery and furniture, as a single design and build package.
Do I need landlord approval for an office fit-out?
In most leased buildings, yes. The landlord will usually grant a Licence for Alterations once they have reviewed your drawings and specification, and the building's fit-out rules will set working hours and access. Our design and build service includes preparing this design information.
Can you fit out our office while we keep working?
Yes. We build around your operations with night shifts, weekend working and phased programmes, so there is no shutdown and no lost revenue.
How do you price an office fit-out?
After a site visit and brief we give a lump-sum price against a clear scope. If you already have a like-for-like quote, send it to us and we will review it.
How do I compare office fit out companies in London?
Put the quotes side by side on the same scope. Then check five things: whether the price is a lump sum or full of provisional sums; whether design, landlord drawings and building control are included or extra; how much of the labour is the contractor's own; the programme, and what happens if it slips; and insurance and accreditations. Ask for projects of a similar size you can look at.
What size of office projects do you take on?
Office fit-outs from £100,000 to £10M+. Our recent London workspace projects range from a £200K railway-arch conversion to a £2.2M office conversion in Aldgate. See all our case studies.
What is the difference between fit-out and renovation?
A fit-out equips a space for a new use: new layout, partitions, services, finishes and furniture. A renovation repairs or restores what is already there. Most commercial office projects are a mix of both. For homes, see house renovation.
What is the difference between fit-out and interior design?
Interior design decides how a space looks and works. Fit-out is the building work that delivers it. We do both under one contract; for homes, see our high-end interior design service.
What is a design fit-out?
A fit-out where the same team designs and builds the space, rather than a designer handing drawings to a separate contractor. It is what we mean by design and build. For private homes, see our high-end residential architects.
What does "fit-out" mean in construction?
The work that makes a building's interior usable after the shell is complete: walls, ceilings, floors, doors, lighting, plumbing and electrical systems, and the finishes on top.
What is a fit-out inspection?
A check before handover that the finished space meets the specification and health and safety requirements. On our projects it is part of the weekly quality checks and the final snagging, which we close before you move in.
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