Office fit out contractor services
Transform your workspace with expert office fit out services across the South East, including London, Surrey, Sussex, Kent, Berkshire and the wider Home Counties.
At TB Fit Out (Trevor Blake), we deliver high-quality office fit out solutions tailored to your business, whether you require a full design and build package or a refurbishment of an existing space. Our team works closely with clients to create functional, modern workplaces that support productivity, collaboration and long-term growth.
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TB Fit Out (Trevor Blake Fit Out) is a leading office fit out company delivering high-quality, transformative workspace solutions across Surrey, Sussex, Kent, Berkshire, London, and the wider South East. Based in Salfords, Surrey, near Gatwick and just off the M25, we are ideally positioned to deliver office fit out and commercial fit out projects efficiently across the region.
We work with businesses, architects, building surveyors, landlords, developers, and organisations within the insurance and financial services sectors, providing tailored solutions that align with operational needs, brand identity, and long-term business goals.
As an agile and experienced fit out contractor, we specialise in both CAT A and CAT B office fit outs, creating sustainable, wellbeing-focused environments that support productivity, collaboration, and modern ways of working. Every workspace we deliver is designed around your people, your processes, and how your business operates day-to-day.
With over 25 years of industry experience, we provide a fully managed, end-to-end office fit out service. This includes feasibility and suitability studies, detailed office space planning, and high-quality 3D visualisations to help you clearly understand and refine your workspace before delivery.
We also offer the supply and installation of acoustic, soundproof and sound-deadening furniture, helping to improve workplace comfort, reduce noise, and enhance employee wellbeing.
Whether you are optimising an existing office layout, introducing meeting rooms, or creating collaborative and agile working zones, our office fit out company delivers high-quality results that maximise space, improve efficiency, and support every member of your team.
An office fit out is the process of transforming a commercial space into a fully operational working environment. This can include everything from partitioning and flooring to lighting, furniture installation and mechanical and electrical systems.
Office fit outs are typically delivered in two main forms:
CAT A Fit Out – Preparing a space to a basic functional standard, usually for landlords like this example of First Central dilapidations project taking a Cat B back to a Cat A.
CAT B Fit Out – A complete workplace solution tailored to the occupier, including layout, finishes and branding such as this Head Office transformation for Lindner Prater.
We deliver both CAT A and CAT B office fit outs across the South East, helping landlords and businesses maximise the value and usability of their space.
We provide a complete range of office fit out services designed to support projects of all sizes and complexities.
Our services include:
Office design and space planning
CAT A and CAT B fit outs
Office refurbishment
Partitioning and glazing systems
Mechanical and electrical installation
Flooring, ceilings and lighting
Furniture procurement and installation
Project management and delivery
Whether you are upgrading an existing office or fitting out a new commercial space, our team ensures every detail is delivered to the highest standard.
As a fully managed, design and build office fit out company, we deliver a comprehensive range of services to support every stage of your project:
CAT A fit out – Typically carried out for commercial developers and landlords, preparing a building interior for lease and providing a functional, compliant base for incoming tenants.
CAT B fit out – Delivered for commercial tenants, focusing on internal spaces tailored to business operations, brand identity and any developer requirements.
Workplace appraisal and audit – Assessment of your existing or proposed space to develop a clear brief, provide accurate costings, and offer informed recommendations for your fit out project.
Office space planning – Maximising your available space using AutoCAD and SketchUp designs, with the option to produce detailed 3D rendered visuals to support decision-making.
Agile office fit out and design and build solutions – Creating flexible, modern working environments that align with your people, workflow and organisational needs.
Building works and suspended ceilings – Delivering structural and finishing elements to support a complete and high-quality office fit out.
Mechanical and electrical works – Including cooling systems, air conditioning, ventilation and extraction to ensure comfort, efficiency and compliance.
High-tech office refits – Specialist solutions for communication and data centres, computer suites and technology-driven environments tailored to your sector.
Partitioning systems – Glass and solid partitioning options, including bespoke solutions with opaque, transparent and branded finishes.
Decorating and interior design – Coordinated finishes that align with all aspects of your office fit out, delivered through a fully project-managed, turnkey service focused on your objectives.
Understanding the difference between CAT A and CAT B fit outs is essential when planning your project.
A CAT A fit out provides a blank canvas, including:
Basic finishes
Raised floors and suspended ceilings
Lighting and HVAC systems
This is typically carried out for landlords preparing a space for lease.
A CAT B fit out transforms the space into a fully functional workplace, including:
Meeting rooms and partitions
Workstations and breakout areas
Branding and finishes
Furniture and final detailing
We work with occupiers to design and deliver tailored CAT B office fit outs that reflect company culture and operational needs.
Although there is no single standard definition of a CAT A fit out, it generally refers to the level of finish a developer or landlord provides before a commercial space is leased to a tenant.
A typical CAT A fit out will include:
Raised access floors
Suspended ceilings
Basic mechanical and electrical services
Fire detection and protection systems
Internal surface finishes
Window blinds
In some cases, developers may also provide a financial contribution towards elements such as carpets, floor boxes and grommets. These are often installed as part of the CAT B fit out, allowing tenants to align finishes with their brand and reduce the risk of damage prior to occupation.
A CAT B fit out is the stage where a commercial space is transformed into a fully functional workplace, tailored to the specific needs of the business occupying it.
It takes place after the base build or CAT A fit out has been completed—where core elements such as external walls, ceilings, mechanical and electrical services, shared facilities and infrastructure are already in place.
A CAT B fit out is comparable to moving into a new home and customising it to suit your style, brand and day-to-day needs.
Typically, a CAT B fit out includes:
Partitioning systems
Interior finishes and branding
Carpeting and flooring
Meeting rooms, conference rooms and breakout areas
Reception areas
Lighting installation
Kitchen and welfare facilities
IT and audio-visual systems
Acoustic office furniture
As an experienced office fit out company, we deliver both CAT A and CAT B fit outs. We also provide a dilapidations service, supporting businesses in returning a workspace to its original CAT A condition at the end of a lease. This typically includes the removal of partitioning, flooring, finishes and furniture.
We follow a structured process to ensure every office fit out project is delivered on time and within budget.
We begin by understanding your business, goals and workspace requirements.
Our team develops space plans and concepts to optimise layout and functionality.
We provide clear, transparent costings to align with your budget.
Our experienced team manages the entire fit out process, ensuring quality and efficiency at every stage.
We deliver a fully completed workspace ready for immediate use.
As highly experienced office fit out contractors, we work closely with you throughout the entire process—making your project as smooth and hassle-free as possible, so you can remain focused on your day-to-day operations.
Building on our structured office fit out process, we apply our proven 4D framework to ensure every project is carefully planned, managed and delivered to the highest standard.
We begin by understanding how your space needs to function. This includes:
Informal meeting and collaboration requirements
Brief development and shortlisted building assessments
Initial block planning and space analysis
Technical brief creation
Communication strategy planning
Defining how the space will be used and by whom
We refine your vision into a clear and deliverable plan, including:
Office design and detailed space planning
Initial specifications and budget alignment
Project programme and risk assessment
Furniture and storage review
Communication and presentation of proposals
At this stage, we finalise all technical and compliance aspects of your office fit out:
Landlord and statutory approvals
Health & Safety compliance
Detailed design and technical coordination
IT and infrastructure planning
Detailed specifications and cost planning
Contractual considerations and project security
We ensure a seamless delivery phase with full project oversight and ongoing support:
Hands-on project delivery and site management
Works implementation and programme control
Financial management and risk mitigation
Acoustic and specialist furniture installation
Relocation management
Quality control and final handover
Post-project support
We deliver office fit out projects across:
London
Surrey
Sussex
Kent
Berkshire
The Home Counties
Our local knowledge allows us to efficiently manage projects, coordinate suppliers and deliver consistent results across the region.
As modern workplaces continue to evolve, so do expectations around how office spaces function. Businesses are increasingly rethinking how their environments support collaboration, productivity and employee wellbeing.
While remote and hybrid working have become more established, physical workspaces remain essential for idea generation, creative collaboration and innovation. A well-designed office plays a key role in bringing teams together and supporting how people work day-to-day.
Agile office design and build solutions allow organisations to create flexible, adaptable environments that reflect new ways of working. By combining functionality with thoughtful design, these workspaces can transform how your business operates and how your team interacts within the space.
Agile office fit out designs provide a range of practical and performance-driven benefits:
Reduced distractions and improved focusDedicated quiet zones and soundproof workspace booths allow for private working, even within open-plan environments.
Flexible working environmentsPrivacy hubs and adaptable spaces support different working styles across your workforce.
Maximised use of spaceIntelligent layouts and collaborative design solutions help you make the most of your available office space.
Clear zoning and workflow definitionThoughtful layouts create distinction between teams, functions and processes, improving efficiency and organisation.
Integrated storage and workspace solutionsFeatures such as magnetic whiteboards, planter storage, lockers and built-in systems enhance both usability and aesthetics.
Fully adaptable layoutsMobile walls and reconfigurable elements allow spaces to evolve with your business needs, combining flexibility with functionality.
As an experienced commercial fit out company, we believe that quality and service should never be compromised when delivering your office fit out project.
We have developed strong, long-standing relationships with trusted commercial suppliers, allowing us to source high-quality materials at competitive prices. This includes key elements such as partitioning systems, mechanical and electrical components, and acoustic office furniture.
As a reliable fit out contractor, these partnerships enable us to deliver consistent results while maintaining cost efficiency and programme control across every project.
Our approach is built on long-term collaboration, sustainable design and build principles, and careful consideration of the full lifecycle of materials. This ensures the environments we create are not only functional and visually effective, but also durable, efficient and supportive of your people.
The cost of an office fit out can vary significantly depending on the size of the space, the level of specification and the complexity of the project. Whether you are planning a CAT A fit out for a commercial property or a fully bespoke CAT B office fit out, understanding the key cost drivers is essential when budgeting your project.
Office fit out costs are typically calculated on a cost per square foot basis. While every project is unique, the following ranges provide a general guide:
CAT A Fit Out: £40 – £80 per sq ft
CAT B Fit Out: £80 – £150+ per sq ft
These figures can vary depending on the scope of works, building condition and the level of finish required.
Several factors influence the overall cost of an office fit out:
Size and layout of the spaceLarger spaces may benefit from economies of scale, but complex layouts can increase costs.
Level of specificationHigher-end finishes, bespoke joinery and branded elements will increase the overall investment.
Mechanical and electrical requirementsAir conditioning, ventilation, lighting and power upgrades can significantly impact cost.
Design complexityDetailed space planning, 3D visualisations and bespoke features can add to project scope.
Furniture and specialist featuresItems such as acoustic office furniture, meeting pods and collaborative zones will influence the final cost.
Location within the South EastSite access, building constraints and regional factors can affect project delivery costs.
Every workspace is different, which is why we provide fully tailored quotations based on your specific requirements.
If you are planning an office fit out in Surrey, Sussex, Kent, Berkshire, London or the wider South East, speak to our team today to discuss your project and receive a detailed cost proposal.
“Having recently used Trevor Blake as the fit out contractor for our new offices, I would have no hesitation in recommending them. Right from the tendering stage through to practical completion they were proactive and professional in their approach, keeping to project time scales and budget. The site team were also a pleasure to deal with, any issues or problems encountered were dealt with swiftly and professionally.”
Ian Coulman, Accord CAD Services
"We commend the TB Fit Out team on their professional attitude, eye for detail, and working to agreed time-scales"
Titan Travel UK
“I just wanted to thank you personally as well for the great work that you and your teams deliver for the College. The standard of work is outstanding! Thank you so much.”
Maria Vetrone, Nescot College
"I just wanted to write to thank you for all of the hard work that you and your teams have put in this summer on Ducks and Verites. Once again you were on time and produced a high quality finish in both houses and undertook additional work as the project went along. Your site agents were excellent and Leon in particular has received a huge amount of praise from the Verites house team and adjacent Gownboys housemaster. The projects both look amazing and I feel certain that the pupils will be very pleased with their new spaces."
Estate Bursar, Charterhouse
“We used Trevor Blake Fit Out to help Creative reconfigure our workplace to provide a COVID safe environment in anticipation of staff returning to the office from mid 2021, as well to refresh the appearance of such space given a rebranding exercise that had been completed by the business in 2020. Throughout the scoping and quotation process the liaison with Trevor Blake Fit Out was just as we needed, with options and recommendations fully explained to us, and the quality of the work completed by the team was first class, meaning that we now have a workplace that staff are pleased to return to, and take pride in working within, and which is fully enabled to allow Creative to operate effectively as we hopefully move to a post-pandemic operational model. We have used Trevor Blake Fit Out on many occasions in the past, and would be expecting to use them again in the future.” Neil Gough, Operations Director, Creative
Neil Gough, Creative
“In the 10 years that we’ve worked with Trevor Blake Fit Out we’ve amassed a multitude of projects at our current and previous premises, encompassing: a full office fit out, alterations to our current partitioning, dilapidation of our previous premises and electrical works which included lighting alterations. They have also supplied us with collaborative furniture and monitor arms with cable management to all of our existing work stations which allowed more of a clean desk policy. Their help enabled us to create flexible zones that enhanced our work flow processes and made our working areas places that our staff could thrive within, where they can work in a way that suits them and a space where they can be comfortable and productive within. Choosing to work with TB Fit Out is always an easy choice with their expertise, professionalism and guided solutions to make our workspaces the best it can be for everyone within it and whom we welcome into it.”
Mick Ridgway, First Central
Take a look through some of our recent office fit out and fit out company service case study projects across London, Surrey, Sussex, Kent, Berkshire and the South East along with some of our favourite cat a, cat b, design and build case studies in Crawley, Horsham, Ewell, Epsom, Redhill, Chessington, Wimbledon, Chatsworth, Winchester, Eastbourne, Bough Beech, Croydon et al to see what we've achieved as a fit out contractor for our other clients.
An office fit out is the process of transforming an empty or existing commercial space into a fully functional workplace. This includes layout design, partitioning, mechanical and electrical installation, finishes, furniture and branding to create a workspace tailored to your business.
A CAT A fit out prepares a commercial space for occupation with basic finishes, lighting and services. A CAT B fit out completes the space for day-to-day use, including meeting rooms, workstations, branding, furniture and internal layouts tailored to the business.
Office fit out costs in the South East typically range from £40–£80 per sq ft for CAT A and £80–£150+ per sq ft for CAT B. Costs vary depending on the size, specification, design complexity and mechanical and electrical requirements of the project.
Most office fit out projects take between 4–12 weeks to complete. The exact timeline depends on the size of the space, level of design, scope of works and whether planning or landlord approvals are required.
An office fit out company manages the design, planning and construction of a workspace. This includes space planning, project management, installation of services, finishes, furniture and ensuring the office is ready for occupation.
Yes, office fit out contractors can deliver projects in occupied environments. Careful planning, phased works and out-of-hours scheduling help minimise disruption to your business operations.
Yes, we provide a fully managed design and build office fit out service. This covers everything from initial concept and space planning through to project delivery, installation and handover.
A CAT B fit out typically includes partitioning, meeting rooms, flooring, lighting, kitchen facilities, reception areas, IT infrastructure, branding and furniture, creating a complete and ready-to-use workspace.
If you are relocating, refurbishing, expanding or consolidating, re-branding or simply refreshing, we can work with you to create the right workplace tailored for you and your people. Give us a call or drop us a line via the form to see how we can help with your office fit out project. We bring over 25 years of professional expertise in fully managed, turnkey, office fit out's and fit out contractor services in Crawley, Manor Royal, Charlwood, Horsham, Redhill, Horley, Gatwick, Guildford, Dorking, Leatherhead and fit out services across the South-East.
Pop our fit out company a message | Give us a call on 01293 775509 | or email us at sales@tbfitout.co.uk
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