Office Fit-Out Clerkenwell

Office fit-out in Clerkenwell is real, everyday work, because this is one of the places Islington protects for business. The Local Plan names the Clerkenwell Design Cluster and Tech City around Old Street among the borough's economic clusters, and office uses are the clear priority in the CAZ and the Bunhill and Clerkenwell Area Action Plan area. At our scale that means a studio floor, a small office suite or a floor in a converted warehouse, stripped, partitioned, lit and handed back ready for desks.

For Clerkenwell, the construction part of an office fit-out is published at £70 to £120 per sq ft as a UK guide, and an all-in London office fit-out at £148 to £359 per sq ft (Oktra and Cushman and Wakefield, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Clerkenwell: we build the office partitions, ceilings, lighting and finishes as one contract and coordinate the IT supplier and specialist trades around them.

Fitting out Clerkenwell studios and offices where offices come first

In Clerkenwell most office fit-out is a refit of space already in business use, because planning here is set up to keep it that way. Office uses are the clear priority in the CAZ and the Bunhill and Clerkenwell Area Action Plan area, which gives a tenant or owner confidence that money spent on a floor stays in an office building. The Clerkenwell Design Cluster also means many floors are studios, where the brief leans to open benching, sample walls, good daylight and exposed structure rather than cellular rooms.

It also means a change away from business use is hard. Policy B3 refuses a net loss of business floorspace in the CAZ and similar areas unless the space has been vacant and continuously marketed for at least 24 months. So in Clerkenwell the common brief is a refit of existing space: a studio floor refitted for a new design tenant, a tired office turned into open desks and meeting rooms, or a warehouse floor given ceilings, lighting and a tea point.

Cat A, Cat B and the landlord's licence for a Clerkenwell floor

Office lettings in Clerkenwell are usually described as Cat A or Cat B, and knowing which you are taking tells you what you are paying a builder to do. Cat A is the landlord's base finish: ceilings, lighting, raised floor or trunking, heating and cooling and working toilets. Cat B is the tenant's layout on top of it: partitions and glazed meeting rooms, the tea point or kitchenette, extra small power, data routes for the IT supplier, and decoration and signage inside.

In a converted warehouse the Cat A line is often blurred, with exposed ceilings and services left on show by design. Either way the landlord's licence for alterations comes first, with drawings showing how the partitions, lighting and any new plumbing tie into the building. Your designer prepares those drawings, we price against the landlord's fit-out guide, and hold the programme until the licence is signed, so nothing built has to be taken out again.

Building control, fire escape and CDM for a Clerkenwell office

An office fit-out in Clerkenwell that needs approval goes to full plans or a registered building control approver, because Islington says a building notice cannot be used for non-domestic properties. Part B means of escape is the usual focus. New meeting rooms must not create inner rooms without a safe route out. Glazed screens need the right fire rating where they form part of an escape corridor, and escape lighting follows the new layout. Part M access and Part L lighting controls are checked at the same stage.

Islington building control says a discount can be discussed for a commercial fit-out of offices and shops that is not the initial fit-out, so a refit may cost less to approve than a first fit. As the client, a business has duties of its own under the Construction (Design and Management) Regulations, including allowing enough time and passing on information about the building. Where more than one contractor is on site we act as principal contractor and keep the construction phase plan there.

Out-of-hours work and lease-end reinstatement in Clerkenwell buildings

Many Clerkenwell office buildings stay occupied during a fit-out, with other tenants on the floors above and below. Noisy work in Islington runs 8am to 6pm Monday to Friday and 8am to 1pm on Saturdays unless the council gives prior approval, and the building's own rules may be tighter. We put drilling and cutting inside those hours, and leave cabling, ceiling tiles and decoration for quieter periods. A lift booking and a loading slot are agreed with the building manager for each delivery.

At the other end of a lease, dilapidations and reinstatement are a fit-out in reverse. A tenant leaving a Clerkenwell floor may have to strip out partitions and return the space to the condition the lease describes, and the landlord's surveyor will check it. Islington has made Article 4 Directions withdrawing the Class MA right to turn Class E space into homes across the CAZ, with only Angel Gate at Goswell Road excluded, which helps keep these floors in office use.

• Quiet work after hours in occupied offices, noisy work within the council's hours
• Fire doors, self-closers and fire stopping to the office fire strategy
• Suspended grid ceilings and plasterboard ceilings with access panels

VOA Council Tax stock of properties, March 2025, for Clerkenwell. Counts rounded by the VOA.

Plenty of Clerkenwell projects start with one job and grow, so it helps to see commercial fit-out in Clerkenwell, office fit-out across Islington, builders in Islington, what a snagging list covers, our London office fit-out page and Lighting Guide.

The GS Renovation Difference in Clerkenwell

A fit-out is judged on the date the team moves in, so the programme matters as much as the finish. We give one programme for strip out, partitions, ceilings, lighting, joinery and decoration, and one team runs it. The landlord's licence, the drawings and the building control inspections are worked into that sequence from the start, the data cabling is coordinated with your IT supplier, and the certificates your landlord and insurer ask for are handed over at completion.

• Asbestos survey checked before any office ceiling, floor tile or boxing is disturbed
• Materials priced at options, so you choose the finish
• A programme built back from the date your staff move in

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254).