Office Fit-Out Brentwood
Office fit-outs for small and medium office suites in Brentwood, partitions, ceilings, lighting and small power for your office, with the IT and specialist trades coordinated.
- Rated 4.9 from 31 reviews on MyBuilder
- UK guide: £70 to £120 per sq ft
- Free site survey, itemised quote
Brentwood is a market town, not an office district. Office fit-out here means the space it actually has: suites above shops on the High Street and in the district centres, small professional offices, and office buildings on the employment sites the Local Plan protects. We strip out, build partitions and glazed screens, fit ceilings, lighting and small power, and finish kitchenettes, WCs and meeting rooms. Brentwood building control will not accept a Building Notice where people work, so every job runs from a full plans approval.
For Brentwood, 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 Brentwood: we build the office partitions, ceilings, lighting and finishes as one contract and coordinate the IT supplier and specialist trades around them.
Price guide
| Work | Indicative range |
|---|---|
| Office fit-out, construction only | £70 to £120 per sq ft |
| London office fit-out, all-in | £148 to £359 per sq ft |
| Metal stud partition, boarded both sides | £55 to £65 per m² |
| Suspended ceiling, grid and tile | £22 to £35 per m² |
| Dilapidations at lease end | £15 to £20 per sq ft |
Indicative ranges from published cost guides (Cushman and Wakefield, Oktra and Checkatrade, 2026), not a quotation. Most are UK-wide figures and London work usually costs more; a row marked London is a London figure. Essex prices follow a site visit. Prices checked September 2026.
Quick estimate from UK guide figures
Guide range: choose above
Where Brentwood's office space is, and what that means for a fit-out
Brentwood's office space is spread thin rather than grouped in a business district. The town centre, with the High Street as its Primary Shopping Area, has rooms and suites above shops, and so do the district centres at Shenfield Hutton Road and Warley Hill by Brentwood station. Larger office buildings sit on designated employment sites, which Strategic Policy PC01 protects from change to other uses unless set criteria are met. Each type sets different limits on ceilings, risers and access.
A suite above a shop usually has one staircase, domestic height ceilings and services shared with the unit below, so a suspended ceiling or raised floor may not fit. A floor in a purpose-built office building usually has a grid ceiling and a landlord's riser, and the fit-out works to the landlord's rules. We measure ceiling heights, trace the escape route and find the risers on the first visit, before a layout is drawn.
Cat A, Cat B and the landlord's licence in Brentwood
A Cat A fit-out gives a usable blank floor: ceilings, lighting, heating and cooling, raised floor if any, and finished WCs. Cat B is the tenant's layout on top of that: partitions, meeting rooms, a tea point, furniture and the data cabling your IT supplier specifies. Small Brentwood suites are often let in neither state, so the work often starts with strip out of the last tenant's partitions. That strip out is priced from a walk round, not guessed.
Most office leases require the landlord's licence for alterations before partitions or services change, though some forbid alterations outright and others allow non-structural work. The landlord will want drawings and a method statement, and may insist on its own contractors for fire alarm or sprinkler alterations. We prepare the programme and work details the licence needs, and we coordinate our trades with the landlord's. The lease also decides the reinstatement you owe at the end of the term. Knowing that before you sign affects the fit-out budget.
Full plans approval for every Brentwood office fit-out
Brentwood building control will not accept a Building Notice for buildings where people work, so an office fit-out needs a full plans application. Drawings are checked before work starts, and the checks that matter most in an office are Part B fire safety and means of escape, Part M access and accessible WCs, and Part L for lighting and heating controls. A new partition that lengthens a travel distance or blocks a second exit changes the approval.
We build to the approved drawings and raise any change with the designer before it is built. Building control inspections are booked before 4.00pm the day before, and we plan the ceiling close up so nothing is covered before it is seen. Where the suite has been altered without approval before, a regularisation application is the route, which Brentwood building control accepts. The owner or tenant makes it. Brentwood then issues the completion certificate.
Office buildings in Brentwood: conversion to homes and old frames
National permitted development lets some commercial buildings, offices included, become homes through prior approval, subject to its own conditions, while PC01 guards the designated employment sites through the planning route. For a tenant this is background. It explains why some office buildings change hands for housing and others stay in business use, but it does not change your fit-out, which runs on the lease, the landlord's licence and building regulations.
In the old town, an office above a shop can sit inside a timber frame hidden by later brick. Behind the 19th century fronts of nos. 108 to 114 Brentwood High Street there are the remains of timber frames, and the appraisal states it is probable that other survivals are concealed by later brickwork. We open up in test areas before chasing cables or cutting for ducts, and route data and power in surface trunking where the designer agrees.
- Decoration and making good to a move-in standard
- Tea points and kitchenettes on the existing risers
- Cat B office layouts built onto a landlord's Cat A floor
VOA Council Tax stock of properties, March 2025, for all 6 statistical areas in Brentwood. Counts rounded by the VOA.
Working With GS Renovation in Brentwood
An office that is shut costs a business money, so we run the fit-out to a fixed programme with the noisy strip out and first fix grouped early. We work to the full plans approval and the landlord's licence, coordinate with your IT supplier on data and with the landlord on fire alarms, and a registered electrician certifies the new circuits. Where the building is occupied, noisy work stays within the council's permitted hours and quiet work such as decoration can run after hours. As a commercial client you have CDM duties, and we explain them at the survey.
- Method statement and programme supplied for your landlord's licence for alterations
- Asbestos survey checked before any office ceiling, floor tile or boxing is disturbed
- Registered in England, Companies House no. 14611254
Excellent service. George's knowledge and skills are the best in the market. He knows what he is doing, does really high quality work, gives good…
My husband and I are extremely pleased with the work. The standard of the work is outstanding and Saiid has a great eye for detail and will not leave…
George was very friendly and helpful from start to finish. He worked really hard to ensure our kitchen was installed to a high standard and was…
FAQ
Frequently Asked Questions about Office Fit-Out Brentwood
How much does an office fit-out cost in Brentwood?
Published guides put the construction part of an office fit-out at £70 to £120 per square foot (Oktra, 2026) and an all-in London fit-out at £148 to £359 per square foot (Cushman and Wakefield, 2026). The survey and your layout fix the scope, and the quote itemises strip-out, partitions, ceilings, lighting, power and making good.
Can a Building Notice be used for an office fit-out in Brentwood?
No. Brentwood building control will not accept a Building Notice for buildings where people work, so an office fit-out needs a full plans application. The designer prepares the drawings and the owner or tenant submits them. We build to the approved set and book the inspections as the work goes.
What is the difference between Cat A and Cat B fit-out?
Cat A delivers a blank, usable floor with ceilings, lighting, heating and cooling, and finished WCs. Cat B is the tenant's own layout on top: partitions, meeting rooms, a tea point, furniture and data cabling. We do both, and in a small suite we often do them as one job after stripping out the previous tenant's partitions.
Can an office suite above a Brentwood High Street shop be fitted out?
Yes, with care. The High Street is the town's Primary Shopping Area, and suites above the shops often have one stair, low ceilings and services shared with the unit below. We check the escape route and ceiling height first, then plan the partitions and lighting around them rather than forcing in a grid ceiling.
Can you fit out an office in a listed building in Brentwood town centre?
Yes, once the owner has any listed building consent the works need. About thirty listed entries stand inside the Brentwood Town Centre Conservation Area, which runs along the High Street frontages and the west end of Shenfield Road. Consent covers internal works that affect a listed building's character, such as new partitions or cutting for cables. We fix partitions without damaging old walls and route services in agreed paths.
Can you fit out a Brentwood office outside working hours?
Partly. Noisy work such as strip out, drilling and cutting into slabs stays within the council's permitted hours. Outside them it needs the council's agreement, usually through a prior consent under the Control of Pollution Act, rarely granted where homes are nearby. In a building with no homes affected, noisy work outside trading hours can be agreed with the landlord and other occupiers, still within the council's rules. Quiet trades such as decoration and second fix can run in the evening. We agree the hours with the landlord and neighbouring tenants before the programme is fixed.
What happens to the fit-out at the end of a Brentwood office lease?
The lease decides. Many require the tenant to strip out its partitions and reinstate the original Cat A state, and the landlord's surveyor lists the work in a dilapidations schedule. We price reinstatement from that schedule, strip out the tenant's fit-out and make good ceilings, floors and services so the space can be handed back.
Does a Brentwood office fit-out need a completion certificate?
Yes, where the work was approved by building control. Brentwood issues a completion certificate on satisfactory completion. Electrical work in an office is not notifiable under Part P, which covers dwellings, although new lighting is checked under Part L, and the registered electrician's installation certificate still goes in the handover file. The landlord and the fire risk assessor will ask for both, so we collect them with the fire alarm and emergency lighting records.
Do we have duties as the client on a small office fit-out?
Yes. Under the CDM Regulations a commercial client must make suitable arrangements for managing the project, including giving information about the building, such as an asbestos survey for older premises. Where more than one contractor is involved, as with an electrician, joiners and your IT supplier, the client appoints a principal designer and a principal contractor in writing. We act as principal contractor, prepare the construction phase plan and keep the site safe for your staff and visitors.
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