Commercial Office Fit Out

Expert service from an award-winning teamโ€‹

Interior office fit outs and re-fits


An office fit out project of either your new (or existing) commercial environment can be a complex project. It must accommodate all your staffing needs, represent your corporate brand, and meet your business growth plans.

SEC Interiors are commercial refurbishment contractors who will be able to work with you to assess the feasibility of your office fit out project.

We will work with you to develop a solution which fully meets your company’s needs and expectations. Our property appraisal and complimentary space planning and design process will ensure that all avenues are explored to ensure that your new office works for you operationally, culturally and aesthetically; both now and in the future.

Office fit out services
Interior office fit out products

Interior products we can provide:

*Click on the links above to find out more about those specific products.

Office interior fit out partners


As one of the leading commercial interior and office fit out contracting companies in Hertfordshire, London and the Home Counties, our network of product suppliers is vast. We are able to call upon the expertise of our support network in addition to applying our own extensive experience to plan and provide a bespoke office environment that is specific to your needs.

Category A office fit-out

Category A office fit outs


Whether you are an end user looking for a Category B fit-out or a landlord or property surveyor needing to complete a Category A fit out, we can work with you to determine the optimum solution for your project whilst offering complete end to end project management.


A Category A fit-out will form part of the core makeup of an office environment ready for occupiers and includes:


  • Floor coverings
  • Suspended ceilings
  • Lighting, air conditioning and mechanical items
  • Wall finishes

This will provide the foundation for a Category B fit out. 

Category B office fit outs


Category B fit-outs are for the occupier of the space prepared by the Category A installation. Category B solutions may include:


  • Designing specific alterations of the Category A fit out to suit the occupier's requirements including M&E services
  • Office reception areas
  • Partitioning systems
  • Individual offices
  • Conference and meeting facilities
  • Tea points, staff areas and canteens
  • Flooring
  • Decoration and wall finishes
  • New office furniture and storage solutions
Category B office fit out

Looking for help with your next project?

Thank you for choosing to contact the SEC Group. Please complete the form below and we will endeavour to respond the same working day.

Please read our Privacy Notice and Cookie Policy to find out how we will process and use your data.

Clients we have worked with...

Franke Coffee Systems (UK) Ltd
Monarch Airlines

Interior project delivery


With our vast experience and industry expertise, our Project Management Team will be able to provide you with technical support and assistance to guide you throughout the various stages of your project, enabling you to concentrate on the day-to-day running of your business.


Contract Managers will provide detailed planning to ensure its successful outcome. This could include:


  • Site surveys
  • Trade group coordination
  • Construction Design and Management (CDM) Regulation implementation
  • DDA/Equality compliance
  • Management of statutory applications and approvals.
  • Programme planning
Interior project delivery
Interior project delivery - contract control

Contract control


Throughout the project our Contract Managers will ensure there is day-to-day project control whilst working to a pre-determined and agreed programme. Our team of office and field-based personnel will:


  • Procure materials, labour and plant
  • Liaise fully with clients and project personnel
  • Maintain a close working relationship with you
  • Provide detailed task management
  • Attend regular site meetings
  • Maintain real-time programme control
  • Organise the attendance of Site Managers (where required)
  • Implement and manage CDM and Health and Safety

Complimentary warehouse space planning and product appraisal service


A Complimentary Space Planning Service

Take advantage of our FREE site survey and space planning service



A Company You Can Trust

We hold SafeContractor, CHAS and Constructionline accreditations


Complete Project Management

We'll work with you every step of the way to deliver the best solution for your office

Before you go... Take a look at some of our award winning projects