Commercial Fit-Out Marylebone

Commercial fit-out in Marylebone centres on Marylebone High Street and Marylebone Road, which Westminster names as CAZ Retail Clusters. The units are shops, cafes, restaurants, salons and clinics, and a unit can be a narrow ground floor with a lower floor behind a period shopfront and homes above. A fit-out here covers the counter, service areas, floors, lighting, WCs and extraction, and it has to clear Westminster's shopfront rules and trade next door to neighbours who live over the shop.

For Marylebone, published UK guides put refurbishing a retail space at £1,500 to £3,000 per m² and a restaurant or cafe at £2,000 to £4,500 per m², and London units usually cost more (MyBuilder, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Marylebone: our own trades do the strip-out, back of house, counter fitting and finishes, and we coordinate the shopfront, extraction, electrical and fire specialists the unit needs.

The shops, cafes and clinics a Marylebone fit-out serves

Marylebone High Street and Marylebone Road are named CAZ Retail Clusters, a tier the London Plan town centre network sets alongside its International, Metropolitan, Major and District centres. The units on it and the side streets around it take in shops, cafes, restaurants, salons and clinics, each needing a different fit-out. A unit in a period building here may be narrow, deep and on two levels, with the lower floor used for storage, a kitchen or treatment rooms.

That shape decides the plan. The counter and display go where the shopfront gives light and the customer comes in, while kitchens, stores and staff WCs go to the back or below. New extraction, drainage and power have to find a route through an old building. Many of these buildings have flats on the upper floors, so there may well be homes above the unit. We survey the risers, the ceiling voids and the lower floor access first, because those fix where the service areas can sit.

Shopfronts, shutters and canopies in Marylebone need consent

Changing a shopfront in Marylebone usually needs planning permission. Westminster's shopfront design guide says altering or replacing a shopfront generally requires permission, and advertisements may need separate advertisement consent. A canopy with no advertisements on it still requires planning permission. In a conservation area, some alterations need permission that would not be needed elsewhere, and Westminster's audits pick out unlisted buildings of merit, so the frontage of an older building is judged on its detail as well as its signage. In a listed building, listed building consent covers works inside and out.

Security is where plans change most. Westminster's guide says security shutters normally need planning permission and roller shutters will not normally be given consent, so your designer can look at internal grilles or laminated glass instead. That choice affects the frame, the alarm and your insurer's terms. Your designer or agent makes the applications, and we build the frontage to the approved drawings and fit signs once consent is in hand, so nothing on a Marylebone frontage has to be taken down after opening.

Use class, extraction and building regulations for a Marylebone unit

Check the use class before signing a lease on a Marylebone unit. Class E covers shops, cafes, restaurants, clinics, gyms and offices, so moving between those uses does not normally need planning permission. Hot food takeaways, pubs and bars are sui generis, and a change to them does. A cafe or restaurant that cooks also needs kitchen extraction and odour control, and a flue on the back of a period building can take the most design and consent time. The London Plan also asks boroughs to use targeted Article 4 Directions to keep retail from turning into homes, so a Marylebone unit is planned as a trading unit for the long term.

Building regulations add their own checks for a unit the public walks into. Part B covers the escape route from the lower floor and the fire separation from flats above, Part M covers the entrance and an accessible WC where one is required, and a food business needs a grease trap or suitable drainage. A shop is covered by the Fire Safety Order, and Westminster allows a building notice only where the work is not affected by that order, so the route is full plans. Your designer sets these out in that application, and the landlord's surveyor usually reviews the same drawings. We build to the approved plans and collect the test certificates for handover.

Trading, deliveries and flats above a Marylebone shop

A High Street fit-out has to live with the street. Scaffolding, construction fencing or a cherry picker on the road or pavement needs a temporary structure licence from Westminster, and the footway around works must stay at least 1.5m wide for shoppers. Deliveries and waste are timed around loading rules and neighbouring shops. We plan the access for counters, glazing and kitchen equipment in advance, because a Marylebone High Street pavement leaves little room for a lorry to stand while it unloads.

Neighbours above set the pace for noisy stages. Westminster's normal hours for noisy work are Monday to Friday 8am to 6pm and Saturday 8am to 1pm, and noisy construction outside them needs a Section 61 application at least 28 days ahead. With flats above it is rarely granted, so breaking out floors, cutting drainage runs and fixing extraction brackets go in the daytime slot. Where an owner wants to keep trading, we phase the work behind dust screens with a separate site entrance, and move shop fitting and decoration into the evening once the noisy stages are done.

• Grease traps and kitchen drainage where food is served
• Cafe, restaurant and bakery fit-outs around the kitchen
• Internal lattice grilles and shutters designed into the shopfront

VOA Council Tax stock of properties, March 2025, for Marylebone & Park Lane and Bryanston & Dorset Square. Counts rounded by the VOA.

If you are weighing up commercial fit-out in Marylebone, it may help to read office fit-out in Marylebone, commercial fit-out across Westminster, builders in London, how building control works in London, commercial fit-out anywhere in London and Tiling Cost.

Trusted Commercial Fit-Out in Marylebone

A shop, cafe or clinic has an opening date, and the fit-out works back from it. We order the shopfront, canopy and signs only once consents are in hand, build the counter, service areas, floors, lighting, WCs, drainage and extraction to the approved drawings, and plan deliveries around the street and the flats above. The electrical and gas certificates, and the extraction and drainage records, go into the handover pack before your first customer arrives.

• Our own trades on site rather than a chain of subcontractors
• Shopfront, sign and extract consents checked before anything is ordered
• Noisy work and deliveries booked around the neighbouring shops' trading hours

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