Home/Interior Designer/Guides/Bathroom Design Services — UK Cost & Process Guide

Design your bathroom.

Layout, fittings, tiles, lighting and finish — designed by an interior specialist before the builder arrives.

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Top tips

Hiring a interior designer, without the regret.

Four moves that separate a smooth job from a nightmare.

Agree the fee model up front.

Hourly, fixed fee, percentage of project, or product mark-up — interior designers charge any of four ways. Pin down which before any work starts.

Get a written brief signed off.

'I want something modern' is not a brief. Insist on a written, signed brief covering scope, style, budget and timeline — change it later costs extra.

Ask about trade discounts.

Designers often buy at trade prices and pass on (or keep) the discount. Get clarity on whether you pay trade or retail through them.

Insist on visualisations, not mood boards.

Mood boards are vague; CGI or 3D visualisations let you see the actual room. Worth £400 to avoid a £4k mistake.

Costs & timeline

Know what it costs. Know when it ends.

Indicative UK ranges and what affects price.

Cost range

By job type

Inc. VAT · 2026
Source: NMT quotes
Consultation (per hour)
£80–£200/hr
Single-room design (concept only)
£800–£2.5k
Single-room full design + buyingExcl. furniture
£2k–£8k
Whole-house design (3-bed)Excl. furniture
£5k–£25k
Project management fee% of build cost
£10–£18
CGI / 3D visualisation
£400–£1.5k
!

Quote spread is typically ± 18% — always get 3 quotes.

At a glance

The Interior Designer briefing.

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Bathroom Design Services — UK Cost & Process Guide infographic
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Interior Designer explained

Bathroom design service — specialist layout, tile, and fitting selection. Smaller than kitchen but high-spec. Expect to pay £300–£3,000 for UK bathroom design service.

What Does the Work Involve?

Designer visits. Plumbing constraints assessed. CAD layout. Tile and fitting selection. Brassware coordination. Lighting plan. Often combined with installer for project management.

Typical Costs

ItemLow (£)High (£)Notes
Showroom design (free with purchase)0300If buying their products
Independent designer fee3001,500Layout + selection
3D visualisation200800Render
Project-managed install1,0003,500Plus install costs
Bathroom install (separate)3,00010,000Labour only
Wet room design5002,500Specialist
Spa bathroom premium2,0005,000Complex design

UK Regulations

Part P for electrics (Zone 1/2 IP rating). Part H drainage. Building Regs Part C/F damp/ventilation. Wet rooms tanking essential.

Frequently Asked Questions

Designer essential for bathroom?

For en suite/cloakroom: optional. For wet room or premium: yes.

Wet room or shower enclosure?

Wet room: modern, accessible, premium feel. Enclosure: cheaper, simpler. Designer advises.

How long for design?

2-4 weeks design. 4-8 weeks fittings lead time. 1-2 weeks install.

Cost of bathroom itself?

Budget £3,000-£8,000. Mid £8,000-£20,000. Premium £20,000+ including design.

Best UK bathroom brands?

Victoria Plum, Better Bathrooms budget. Bathstore (Homebase), Roper Rhodes mid. C.P. Hart premium.

Will designer choose tiles?

Yes — coordinated tile selection. Trade discounts from showrooms.

This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.

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