How Much Does an Interior Designer Cost in the UK? 2026 Price Guide

Ask three UK studios to price the same sitting room and you can get £900, £4,200 and £11,000 back — and none of them is chancing it. "Interior design" covers everything from a two-hour colour consultation to a full drawings pack, a lighting plan and eighteen months of procurement.

Fees also move with the building. A 2015 estate house is an easy day: square rooms, 2.4m ceilings, plasterboard you can fix anything to. A Victorian terrace with lime plaster, lath ceilings, sash windows and pre-1970s wiring adds survey hours, bespoke joinery and constraints somebody has to be paid to work around.

Most UK designers price one of five ways. The model matters more than the headline rate: a low hourly with unlimited hours costs more than a properly scoped fixed fee.

• •Hourly: £60-£150 outside London, £120-£250 in central London. Best for advice-only work — a paint scheme, a furniture layout, a second opinion on a builder's plan.
• •Day rate: £450-£900 regionally, £800-£1,400 in London, for shopping days, site visits and snagging.
• •Per room, fixed fee: £1,500-£4,000 for a scheme with drawings, samples and a source list. Bedroom at the bottom, kitchen or bathroom at the top.
• •Whole-house: £8,000-£30,000+ for a three- to four-bed home, depending on joinery and lighting design.
• •Percentage of project value: 10-20% of the build and furnishing budget, most common above £60,000.
• •Online 'e-design' packages: £250-£600 per room. A scheme, a layout and a shopping list — but no site visits and no responsibility for whether it fits.

If a quote is a single number, ask for it itemised. Buying only the parts you need is normal — plenty of clients take the drawings and lighting plan, then source everything themselves.

• •Initial consultation, 2 hours on site: £150-£400. Around half of studios credit this against a full commission.
• •Measured survey of a room: £150-£350 in a modern house; £400-£900 in a period property where nothing is square.
• •Concept scheme and mood board, per room: £400-£900.
• •Technical drawings pack (plans, elevations, joinery details), per room: £600-£1,800.
• •Lighting and electrical layout, per room: £250-£600 — cheap insurance against sockets behind the sofa.
• •Procurement: either 10-15% on goods, or the designer keeps the trade discount (20-40% off retail) instead.
• •Site visits during works: £250-£500 each, or bundled into the fee.

The equivalent of the labour-versus-materials split is fee versus FF&E — furniture, fittings and equipment. Expect the design fee to be 12-20% of total spend. Above 25% you are paying for advice you cannot afford to act on; below 10% the designer is clawing it back through procurement mark-up.

A £25,000 sitting-and-dining scheme breaks down at roughly £4,000 design fee, £12,500 furniture and soft furnishings, £5,500 joinery, £2,500 decorating and £500 lighting. The fee is the smallest line and the one that decides whether the other £21,000 is spent well. Under about £8,000 of furnishings, an hourly consultation plus our guide to choosing a paint colour and a careful lighting layers plan gets you most of the way.

Pre-1919 stock is where fees quietly inflate, and the quote rarely says why. Solid walls mean no cavity for services and no easy fixings; lime plaster on lath will not hold a heavy bracket without a timber pattress, and it wants breathable mineral or clay paint (£45-£75 per 2.5L against £25-£35 for emulsion) rather than vinyl silk, which traps moisture and blows the surface.

The bigger cost is that nothing repeats. Alcoves either side of a chimney breast routinely differ by 30-40mm, so cupboards are made rather than bought: £1,200-£2,500 per alcove against £400 flat-pack. Sash windows run 2.1-2.4m tall at odd widths, so curtains are bespoke at £600-£1,400 each. Lath and plaster ceilings do not want a grid of downlights — every core cut weakens the lath — and if the wiring is rubber or lead-sheathed, the lighting plan triggers a rewire at £3,500-£6,500 for a three-bed terrace. Victorian drainage limits the rest: move a WC more than about 1.5m off the original soil stack and you need a macerator or a new run.

In a conservation area or on a listed building, add £500-£1,500 for heritage liaison and consent drawings, and note that approved alterations to listed buildings lost their VAT zero-rating in 2012. Our comparison of buying an old house versus a new house sets the wider context.

• •Location: London and the South East run 30-50% above the North, Wales and most of Scotland for identical scope.
• •VAT: sole practitioners under the £90,000 threshold do not charge it, so a £3,000 fee elsewhere is really £3,600.
• •Structural change: moving walls or adding steels pulls in an engineer and pushes you toward percentage fees.
• •Bespoke joinery: the biggest multiplier in period homes, and the item most often missing from an early estimate.
• •Speed: a compressed programme means workshop overtime and expedited fabric, typically 10-15% on affected items.
• •Scope creep: a room scheme quietly becoming a renovation. Set the boundary with a proper renovation budget.

• •New-build bedroom refresh, Leeds. Paint scheme, layout and source list bought hourly: 5 hours at £75 = £375 in fees, plus £2,800 of furniture and curtains. Total £3,175, fee share 12%.
• •Victorian terrace sitting room, Bristol. Measured survey £550, scheme and drawings £2,400, two alcove cupboards £3,600, bespoke sash curtains £2,100, breathable paint and decorating £2,300, rewiring that lighting circuit £1,400, furniture £7,000. Total £19,350, fee share 15%.
• •Whole-house, four-bed 1930s semi, Surrey. Fee at 15% of a £110,000 renovation and furnishing budget = £16,500, covering drawings, lighting plans and procurement over nine months — priced much like general contractor costs.

A quote you cannot interrogate is a quote you should not accept. Ask these in writing, not over the phone.

• •Which fee model is this, and what happens if the job runs long? Uncapped hourly with no estimate of hours is how budgets double.
• •How many revision rounds are included? Two is standard; a third should be priced, not free-and-resented.
• •How many site visits, and are they in the fee or extra at £250-£500 each?
• •Do you pass on the trade discount or keep it? Both are legitimate — you just need to know which.
• •Can I see a schedule of works and an FF&E budget, line by line, before any deposit?
• •Are you a member of the BIID or SBID, and do you carry professional indemnity insurance?
• •In a period home, who checks whether the lighting plan forces a rewire? That one is a five-figure surprise. Small rooms carry their own traps — see our small living room ideas.

Figures come from written fee proposals collected from UK studios across London, the South West, the Midlands, the North and central Scotland in early 2026, cross-checked against published rate cards and trade-body guidance. Ranges exclude VAT unless stated and cover residential work only. Fees have risen 5-8% a year since 2023, mostly on joinery and fabric rather than designers' time, so treat any figure over twelve months old as optimistic.