Commercial Fit-Out Merton

Commercial fit-out in Merton means shops, cafes, restaurants, salons and clinics, usually on a high street or a parade, often with flats above. Wimbledon town centre is the largest commercial area, and Mitcham, Morden, Colliers Wood and Raynes Park have their own local shops. The usual job is a unit taken from shell to trading, a change of trade inside an existing shop, or a shop front renewed. Merton's shop front guidance and its policy on shutters shape the front, and building control shapes everything behind it.

For Merton, 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 Merton: 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.

Shop fronts and shutters under Merton policy

In Merton, replacing a shop front or fitting an external roller shutter needs planning permission before it goes up. Merton's Shop Front Guidance SPD puts both among the works that need consent. On a parade that means the design, drawings and application come first, prepared by you or your designer, and our programme for the front starts once the decision is in and any conditions are clear. Signs that are illuminated or large can need advertisement consent as well.

Security is handled from the inside. Merton Local Plan Policy D12.9 asks for any necessary shutters to be installed on the inside of the shop front and to allow clear views into the shop. We allow for an internal grille or a perforated internal shutter in the layout. Its box sits above the ceiling line and its motor is fed from the new distribution board, so it does not end up as an afterthought fixed across the glazing.

Use classes and the change of trade in a Merton unit

Before signing a lease on a Merton shop, check that the use you want is lawful there. Class E covers shops, cafes, restaurants, clinics, gyms and offices, so moving between those usually needs no planning permission for the use itself, unless a planning condition on the unit restricts it. Hot food takeaways, pubs and bars are sui generis, which means a change to them needs a planning application. A takeaway also brings kitchen extraction and odour control, and the flue route up the back of the building is often the hardest part to agree.

If the building is listed, the works themselves are a separate question: anything that affects its character, inside or out, needs listed building consent from Merton Council, and carrying it out without consent is a criminal offence.

The London Plan sorts centres into International, Metropolitan, Major and District centres, with Local and Neighbourhood centres set in each borough's Local Plan. Merton's Local Plan is where to check which centre or parade a unit sits in and what that frontage is expected to hold. Policy SD8 also asks boroughs to introduce targeted Article 4 directions, where justified, removing permitted development for retail to residential, so check whether a direction covers your parade before assuming a unit's future use.

Building regulations behind a Merton shop or cafe fit-out

A shop or cafe fit-out in Merton is non-domestic building work, so building control checks access, fire and drainage. An accessible entrance and, where toilets are provided for customers, an accessible WC come under Part M. Part B covers the means of escape and fire separation from the flats above, which under a Merton parade flat usually means upgrading the ceiling of the shop and sealing every service that passes through it.

Food premises add drainage. A cafe or restaurant needs a grease trap or separator on the kitchen waste, and a new drain run under the floor has to be inspected before it is covered. Merton asks for a site inspection to be requested at least 24 hours from the commencement of work, so we book each stage ahead. At the end, Merton building control issues a completion certificate, which your landlord may ask to see.

Wimbledon fortnight, deliveries and flats above a Merton parade

The Wimbledon tennis championships change how north Merton works each summer. During the championships, planning permission is needed to put up a marquee on public or private land in the north Wimbledon area, so a cafe or shop that plans one needs that consent in hand first. The roads near the All England Club are also busy with visitors. If a fit-out in SW19 has to be trading by then, we set the programme backwards from that date.

On any Merton parade the units either side keep trading and people live upstairs. We agree hours with the landlord, strip out in the morning, and keep dust sheeting in place where food is served next door. Deliveries are timed before the shops open, and counters, display units and flooring arrive in the order they are fitted so nothing sits on the pavement. Extraction and refrigeration trades are brought in so the unit is handed over complete.

• Internal lattice grilles and shutters designed into the shopfront
• Decoration and making good to a customer-ready finish
• Display, shelf and window lighting, certified by a registered electrician

VOA Council Tax stock of properties, March 2025, for all 25 statistical areas in Merton. Counts rounded by the VOA.

Before committing to commercial fit-out in Merton, it is worth looking at office fit-out in Merton, our Merton area guide, what a main building contractor does, building control in London, commercial fit-out across London and Choosing a Builder.

Working With GS Renovation in Merton

A shop or cafe loses money every day it is closed, so the fit-out has to hit the opening date. We visit, read the lease and the landlord's fit-out rules, and give you a written scope and programme built back from the day you want to trade. The same team strips out, builds counters and partitions, lays the floor, installs the shop front to the approved drawings and co-ordinates the electrician, drainage and extraction trades. One person answers your calls from the first strip out to the day the doors open.

• Registered in England, Companies House no. 14611254
• Till, fridge and coffee machine circuits certified by a registered electrician
• Kitchen extraction and grease trap coordinated with their specialists

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