Interior design fees in the UK depend on project scope, location, and the studio’s experience rather than a fixed rate. Residential projects, commercial refits, and consultancy-only work each follow different cost structures. Understanding how studios charge—whether by day rate, percentage, or fixed fee—helps you budget realistically and compare proposals fairly.
Why interior design costs vary so widely across the UK
The cost of hiring an interior designer in the UK has no single answer because every project is fundamentally different. A small consultation on colour and furniture placement in a London flat requires a different investment than a full commercial interior for a hair salon or dental practice in a market town. Location matters: London projects typically command higher fees than equivalent work in Witham or other regions, partly because of overhead and partly because client budgets differ. The studio’s scale of involvement—whether they’re specifying every material, managing contractors, or offering strategic advice only—reshapes the cost entirely.
Studios structure their pricing around the actual work required. A residential apartment in London Embankment demands different expertise and time commitment than a commercial fit-out like Tone at Canary Wharf. Neither is more expensive by default; they’re priced according to complexity, duration, and the resources the studio commits. Understanding this difference prevents the common mistake of expecting all interior design to cost the same, regardless of what you’re asking the designer to do.
How studios charge for their work: the main fee structures
Most UK interior design studios use one of three fee models: fixed project fees, day rates, or a percentage of project spend. Fixed fees work best when the scope is clear from the start—a well-defined residential refresh or a commercial space with straightforward requirements. Day rates apply when work is exploratory or ongoing; the studio charges for time spent in Discovery, Concept, Design & Specification, Commission, and Reveal phases. Percentage-based fees, sometimes called cost-plus, tie the designer’s fee to the total budget you’re spending on materials, furniture, and contractors.
Each structure has merit depending on your situation. Fixed fees give you certainty and suit projects where the brief is stable. Day rates are transparent when you’re unsure how much input you’ll need. Percentage fees align the studio’s incentive with your spend, though they work best on larger projects where the percentage remains reasonable. A reputable studio will be clear about which model applies to your project and why, with no surprise extras hidden in the terms.
What happens at each stage, and where costs accumulate
Interior design work follows a defined sequence: Discovery, Concept, Design & Specification, Commission, and Reveal. In Discovery, the studio listens, measures, and understands your needs—this is paid time that shapes everything that follows. Concept work explores direction, mood, and the strategic bones of the space. Concept, Design & Specification is where the real detail emerges: finishes, furniture selections, lighting plans, layouts, and construction drawings all take shape. Commission is the studio’s project management phase, where they work with suppliers and contractors to bring the specification to life. Reveal is handover and reveal to you.
Costs accumulate most heavily in Concept, Design & Specification and Commission, because these stages demand the most expertise and time. A commercial project like Fruittii Hair Salon or Beaulieu Dental Practice involves detailed technical specification—materials that withstand heavy use, lighting that serves the function, finishes that hold up under professional conditions. A residential project like the Witham Project requires deep knowledge of how spaces live over time: upholstery durability, material maintenance, spatial flow. The studio’s fee reflects this concentration of knowledge, not guesswork or trend-following.
The difference between design-only and full-service projects
Some clients hire a studio for design advice alone: colour consultation, furniture curation, or a reimagined layout. Others want the studio to manage the entire project—liaising with builders, ordering stock, directing installation, troubleshooting on site. These are radically different commitments, and pricing reflects it. Design-only work is lower-cost because the studio doesn’t carry the risk of delivery, timescale management, or contractor coordination. Full-service projects, where the studio is responsible from concept through Reveal, are more expensive because the studio absorbs risk and dedicates resources to ensuring the finished interior matches the intention.
Commercial work—like the projects at Keystones Estate Agent, Tone at Canary Wharf, or Fruittii—typically demands full-service delivery because the client’s business depends on the outcome. Residential projects range across both models: some clients want guidance only, others want the studio to orchestrate everything. Neither is wrong; the fee structure should match what you’re actually asking the studio to do. A studio that quotes a design-only fee for full-service delivery is either underpricing or misleading you.
Questions to ask before you agree a fee
Before committing, clarify what the quoted fee covers. Does it include site visits, material samples, contractor liaison, or just the design proposal? How many revision rounds are included, and what happens if you ask for significant changes? Is the fee all-inclusive, or are expenses (travel, materials, third-party consultants) charged separately? A studio should answer these plainly, ideally in writing. Vague fees with hidden costs breed frustration; transparent fees build trust.
Ask whether the fee covers all five stages—Discovery, Concept, Design & Specification, Commission, and Reveal—or only some of them. Ask how the studio handles scope creep: if your brief expands midway through, how is that priced? Ask about timescale: does the fee assume the project runs to a standard schedule, or does extended timeline cost more? These conversations aren’t about haggling; they’re about ensuring you and the studio have the same expectation. A studio worth hiring will welcome them.
How to budget for a real interior design project
Start by separating the designer’s fee from the project budget—the money spent on furniture, materials, and labour. These are distinct. A studio fee might be a fixed amount, a daily rate, or a percentage of project spend; the project budget is what you’re actually spending to build or furnish the space. Both need planning. For residential work, professional design might be ten to twenty percent of your total project spend, though this varies widely. For commercial work like Tone at Canary Wharf or Beaulieu Dental Practice, the percentage shifts because the technical specification and commercial fit-out often dominate cost.
Budget realistically by having a clear brief before you approach a studio. Know whether you’re refreshing one room or redesigning an entire house. Know whether you’re starting from scratch or working with existing elements. Know your timeline. These details let the studio quote you a genuine fee rather than a guess. A studio will often offer an initial consultation—paid or free, depending on their model—to understand your project before quoting. Use that conversation to sense whether their approach matches your values and expectations. The cheapest fee isn’t the best deal if the studio doesn’t understand your space or brief.