How Much Does Interior Design Cost in London? A Considered Guide

Investing in professional interior design is one of the most meaningful decisions you can make for your home. It shapes how you live, how your spaces feel, and ultimately, how well your property holds its value over time. Yet the question we hear most often — how much does interior design cost in London? — rarely has a simple answer. Every project is as individual as the client behind it.

At Supremati, we believe in transparency. Understanding what drives interior design fees helps you plan with confidence and ensures that your investment delivers lasting results. Here, we offer an honest look at what to expect when commissioning a luxury interior designer in London.

Understanding the Fee Structures

Interior designers in London typically work within one of three fee models, and it is worth understanding each before you begin your search.

Percentage of project value is perhaps the most common approach for comprehensive residential projects. Design fees are calculated as a proportion of the overall budget — typically between ten and twenty-five per cent for luxury-level work. This model aligns the designer’s scope with the scale of your investment, ensuring that the level of service reflects the complexity of the project.

Fixed project fees offer clarity from the outset. Based on a detailed brief, the designer provides a set fee for the entire scope of work. For a one-bedroom apartment in central London, you might expect design fees in the region of £10,000 to £25,000. A two- to three-bedroom home typically falls between £30,000 and £70,000, while larger residences and fully bespoke projects can exceed £100,000.

Hourly rates are sometimes used for consultations or smaller advisory briefs. In London, experienced luxury interior designers charge between £150 and £450 per hour, depending on their expertise and reputation. An initial consultation alone can range from £250 to £500.

What Is Included at Different Price Points

Not all interior design services are equal, and understanding what you receive at each level is essential.

At the consultation level, you might receive a high-level assessment of your space, initial ideas for layout and styling, and a sense of direction for materials and colour. This is ideal if you have a clear vision but need expert guidance to refine it.

A design-only service typically includes detailed concept development with mood boards and material palettes, space planning and furniture layouts, custom colour schemes, and visual presentations or three-dimensional renders. You would then manage procurement and installation independently or with your own contractor.

A full-service package — the model we follow at Supremati — encompasses the entire journey from first meeting to final installation. This includes concept development, architectural detailing and bespoke joinery design, procurement and order management, site coordination with contractors and consultants, and meticulous installation oversight. It is a hands-on, end-to-end approach that ensures every detail is resolved to the highest standard.

Per-Room Costs: Setting Realistic Expectations

For those approaching interior design on a room-by-room basis, London costs vary considerably depending on the space.

A living room or reception room redesign, including furniture, lighting, soft furnishings, and decorative elements, typically ranges from £15,000 to £60,000 or more at the luxury end. Bedrooms follow a similar spectrum — a guest bedroom might sit at the lower end, while a principal suite with bespoke wardrobes, custom headboard design, and curated artwork can reach significantly higher.

Kitchens and bathrooms command larger budgets due to the technical complexity involved. A high-specification kitchen in London often starts at £40,000 and can comfortably exceed £100,000 when bespoke cabinetry, premium appliances, and stone surfaces are specified. Bathrooms range from £15,000 to £50,000 or more, particularly when underfloor heating, bespoke vanity units, and imported materials are part of the brief.

These figures include both the design fees and the cost of furnishings and finishes. It is always worth asking your designer to clearly separate the two so that you understand where your budget is allocated.

Factors That Influence Interior Design Costs

Several variables can shift a project budget significantly, and it helps to be aware of them early in the process.

Scope and complexity are the most obvious drivers. A light refresh of soft furnishings and styling is a fundamentally different undertaking from a full architectural reconfiguration with structural alterations, new services, and bespoke millwork throughout.

Location within London matters more than you might expect. Projects in conservation areas such as Belgravia, Mayfair, or Kensington often involve additional considerations — from planning restrictions to specialist contractors familiar with period properties. Access can also be a factor; narrow streets, listed facades, and basement projects all introduce logistical costs.

Listed building status adds another layer entirely. Grade I and Grade II listed properties require careful navigation of heritage regulations, specialist materials, and often, liaison with conservation officers. This expertise is essential but does add to both timeline and cost.

Timeline plays a role as well. A project with generous lead times allows your designer to source the finest materials, commission bespoke pieces, and coordinate trades efficiently. Compressed timelines are possible, but they often require premium rates from suppliers and contractors to meet accelerated deadlines.

Material and finish specifications can transform a budget. The difference between a beautifully finished room and an extraordinary one often lies in the quality of stone, timber, metalwork, and textiles chosen. Imported marbles, hand-finished wallcoverings, and artisan-made lighting are investments in craftsmanship that elevate a space from attractive to truly exceptional.

Supremati’s Approach to Budgeting

At Supremati, we consider budgeting an integral part of the design process — not an afterthought. During our Design Stage, we work closely with each client to develop a realistic, transparent budget plan that aligns with their goals and priorities.

This means understanding not only what a client wishes to achieve aesthetically, but how they live, what they value, and where it makes sense to invest more — or exercise restraint. A well-considered budget is not about limitation; it is about intention. Allocating resources wisely means that every element of your home feels purposeful and considered.

Our three-phase process — Design, Procurement, and Design Management — ensures that budgets are monitored throughout. From the first concept presentation to the final placement of a cushion, we track expenditure, manage supplier negotiations, and keep you informed at every stage. There are no hidden costs, no unwelcome surprises.

We also believe that luxury interior design should be an investment that appreciates. Thoughtfully designed spaces increase property value, improve daily wellbeing, and stand the test of time. The homes we create are not driven by trends but by a deep understanding of architecture, materials, and the people who inhabit them.

Is Professional Interior Design Worth the Investment?

In short — yes. A skilled interior designer brings expertise that saves time, prevents costly mistakes, and delivers a result that would be difficult to achieve independently. Access to trade-only suppliers, bespoke fabrication, and established relationships with the finest craftspeople in London and beyond — these are advantages that translate directly into the quality of your finished home.

Beyond the tangible, there is the intangible value of living in a space that has been designed with care and intelligence. A home that reflects who you are, functions beautifully for how you live, and brings quiet pleasure every day.

Begin the Conversation

If you are considering an interior design project in London — whether a single room or an entire residence — we would be delighted to discuss your vision. Every project at Supremati begins with a conversation, and we are always happy to provide an initial consultation to explore scope, timeline, and budget.

Book a consultation and let us bring your vision to life.