Kitchen Refurbishment in London: Refit, Remodel or Redesign?

A kitchen refit replaces the kitchen units, worktops, appliances, splashback, and associated finishes while retaining the existing kitchen layout — the same sink position, the same cooker position, and the same drainage and gas/electrical connections. Who does a kitchen refit: a kitchen refit is typically carried out by a kitchen installation company or a general contractor with kitchen fitting experience. A specialist kitchen fitter can carry out a straightforward refit — supply and installation of flatpack or rigid units, worktop templating and fitting, appliance connection (gas hob connection requires a Gas Safe engineer), and basic electrical connection (plug-in appliances). Building Regulations implications: a refit that does not alter drainage, gas supply, or electrical circuits is not notifiable under Building Regulations. If the refit includes a new circuit for an integrated appliance (new electric oven with a 32A radial circuit, for example) or a gas appliance connection, the relevant M&E work must be carried out by a registered engineer and certificated. Planning implications: a kitchen refit has no planning implications. Programme: a standard kitchen refit in a London property (supply and install of a mid-range kitchen in an existing kitchen layout): 3-7 working days. Budget range for a London kitchen refit: budget specification (flatpack kitchen — B&Q, IKEA, Wickes): supply and installation £5,000-£10,000 total. Mid-range specification (Howdens Joinery, Masterclass, Benchmarx, Magnet): supply and installation £10,000-£22,000 total. Premium specification (Nolte, Schuller, Second Nature, Tom Howley — rigid German or British-made units, quartz or stone worktop): supply and installation £18,000-£40,000+. Bespoke specification (handmade in-frame kitchen — deVOL, Plain English, Herringbone Kitchens): supply and installation £30,000-£80,000+.

A kitchen remodel changes the layout of the kitchen within the same room — moving the sink to a different wall, adding an island, changing the run from a U-shape to an L-shape, or opening the kitchen to an adjacent dining area by removing a non-loadbearing partition wall. Who does a kitchen remodel: a kitchen remodel requires a general contractor who can coordinate multiple trades — kitchen fitter, plumber (for drainage relocation and sink repositioning), electrician (for circuit relocation and new sockets to new unit positions), plasterer (to make good where partitions are removed or walls are altered), and tiler (new splashback and floor). A building contractor who regularly handles kitchen refurbishments — rather than a kitchen installation company — is better suited to a remodel. Building Regulations implications: a kitchen remodel involving drainage relocation (new waste pipe route, new connection to the soil stack) requires Building Regulations compliance for the drainage works (Part H). Structural work (removing a wall between the kitchen and dining room — even a non-loadbearing stud partition — may not require Building Regulations, but a loadbearing wall opening requires a structural engineer and a Building Regulations application under Part A). Planning implications: a kitchen remodel within the existing property does not require planning permission. Programme: a typical kitchen remodel in a London Victorian terrace (drain relocation, new layout, full kitchen replacement): 2-4 weeks. Budget range for a London kitchen remodel (construction works only, excluding kitchen supply): drainage relocation, M&E alterations, opening up between kitchen and dining, plaster make-good, decoration: £4,000-£10,000. Plus kitchen supply: add £5,000-£30,000+ depending on specification. Total remodel budget (construction plus mid-range kitchen): £18,000-£40,000.

A full kitchen redesign typically involves structural alteration to the existing house (removing the party wall between the kitchen and dining room, opening up to the rear reception, or removing the back addition) and constructing a new single-storey rear extension to provide the enlarged kitchen footprint. This is a major building project, not a kitchen installation project. Who manages a full kitchen redesign: a principal contractor who coordinates the full scope — structural groundworks, structural steel, M&E, plastering, kitchen installation, flooring, and decoration. An architect or architectural designer prepares the planning drawings and Building Regulations drawings; a structural engineer designs the structural openings and roof structure; the principal contractor manages all trades on site. Planning and Building Regulations: a single-storey rear extension may be Permitted Development (up to 3-6m depth depending on house type) or require full planning permission. Building Regulations is required for all extension and structural work. Programme: from initial design to completion of a full kitchen redesign including a rear extension: 9-18 months (including design, planning, Building Regulations, and construction). Budget range for a full kitchen redesign including rear extension: Single-storey rear extension 16m² + new kitchen (mid-range specification): £70,000-£110,000. Single-storey rear extension 25m² + mid-range kitchen + underfloor heating + roof lantern: £110,000-£155,000. Premium specification with full-width bifold doors, bespoke kitchen, polished concrete floor: £150,000-£200,000+.

For a kitchen refit: a kitchen installation company (independent kitchen retailer with their own installation team) or a kitchen fitter. For a kitchen remodel: a general building contractor with kitchen refurbishment experience — check references specifically for kitchen remodels with drainage and electrical works, not just decorating or other renovation types. For a full kitchen redesign with extension: a principal contractor who regularly manages multi-trade residential projects. Check: does the contractor manage all trades in-house or subcontract extensively? Who will be the day-to-day site manager? Have they completed similar projects in London? Can they provide references from clients on similar-sized and similarly scoped projects? What contract and payment structure do they use? What do they check before: Planning and Building Regulations are in place (or not required); Structural engineer has designed any opening or new beam; Gas Safe and Part P registered engineers are on their team or approved subcontractors; Insurance — public liability (min £2M) and contract works insurance are in place. Questions to ask any London kitchen contractor: what is their experience with party wall issues? (Kitchen extensions often run adjacent to party walls.) Do they carry out a pre-start drain survey on the existing drain connections before starting? (Blocked or deteriorated existing drains discovered during a kitchen project can delay the programme significantly.) What is the process for managing variations? (Confirm all changes in writing before they are carried out.)

Summary of 2025 kitchen refurbishment costs in London across the three project categories: Kitchen Refit (same layout, replace units/worktops/appliances): Budget specification (IKEA, B&Q, Wickes, flatpack): £5,000-£10,000 supply and install total. Mid-range specification (Howdens, Benchmarx, Magnet — rigid units): £10,000-£22,000 supply and install total. Premium specification (German rigid units, quartz worktop — Nolte, Schuller): £18,000-£40,000+ supply and install total. Bespoke (handmade in-frame kitchen — deVOL, Plain English): £30,000-£80,000+. Kitchen Remodel (layout change, drain relocation, structural alteration within existing space): Construction works (drain relocation, M&E, structural, plaster make-good): £4,000-£10,000. Plus kitchen supply: £5,000-£30,000+. Total budget (construction + mid-range kitchen): £18,000-£40,000. Full Kitchen Redesign with Rear Extension: Extension 16m² + mid-range kitchen: £70,000-£110,000. Extension 25m² + mid-range kitchen + roof lantern + UFH: £110,000-£155,000. Premium specification: £150,000-£200,000+. Professional fees (architect, structural engineer, planning): £5,000-£15,000 additional across all three categories depending on scope. VAT at 20% applies to all costs above (for standard-rated supplies and works).