18 August 2026  ·  5 min read  ·  The Process

What does the interior design process for a home actually involve?

Interior design for homes moves through five clear stages: Discovery, Concept, Concept, Design & Specification, Commission, and Reveal. Each stage builds on the last, grounded in understanding your space and needs before any aesthetic decisions are made. This approach ensures the finished interior lasts, functions well, and reflects how you actually live—not a trend that will date.

Why does the process begin with Discovery, not design sketches?

The Discovery stage answers a simple question: what does this home need to become? A designer enters your space without predetermined ideas. They measure, photograph, understand the light at different times of day, identify structural constraints, and listen to how you inhabit the rooms. This phase gathers the factual foundation on which all later decisions rest. Without it, even beautiful design often fails to work in practice.

For the London Embankment Apartment, Discovery revealed that the existing layout forced traffic through the sitting area, that natural light was limited to one wall, and that the owner’s collection of objects needed both visibility and breathing room. These constraints became the design’s starting point, not obstacles to disguise. A designer who skips this stage is designing from assumption, not evidence.

What happens between Discovery and the finished design specification?

The Concept stage translates what you’ve learned into a coherent direction. Colour palettes, material families, spatial moves, and the relationship between rooms take shape. This is where quiet luxury becomes visible—through the choice to use restful neutral tones, to let materials speak honestly (timber, plaster, linen), and to leave space for air and silence. Concept documents show how these decisions will feel when you live inside them, without committing to every detail.

Concept, Design & Specification then becomes precise. Every material is named—the exact plaster finish, the timber species and stain, the upholstery cloth. Layouts are drawn to scale. Lighting positions are plotted. Joinery details are sketched. This stage is where a good concept becomes a buildable, durable interior. It is also where cost clarity emerges, because every choice is documented. A specification written this thoroughly prevents expensive surprises during Commission.

How does Commission differ from design—and why does it matter?

Commission is the stage where your home is actually built: contractors are appointed, materials are ordered, and the work happens on site. The designer’s role shifts from creating drawings to managing quality and problem-solving in real time. A sofa arrives slightly larger than specified; the joinery contractor flags an unforeseen structural detail; the plaster finish needs two more coats to match the sample. Commission is where restraint and competence become visible. A designer who has thought through the specification thoroughly can resolve these issues without compromising the original concept.

At the Witham Project, Commission required close coordination between the structural work, the installation of bespoke joinery, and the layering of finishes. Each trade needed to understand how their work sat within the whole. A poorly specified design would have created conflict and delay. A thorough specification—built during Concept, Design & Specification—allowed the work to move forward with clarity.

What should you expect to see at the Reveal stage?

Reveal is when you step into the finished home. If Discovery, Concept, Design & Specification, and Commission have worked well, the interior will feel inevitable—not surprising or decorative, but right. The light falls as you now understand it should. The colours and materials create the mood you discussed. The layout solves the problems that Discovery identified. There is nothing performative about it. It is simply how your home works now.

The permanent quality of a finished interior is its truest measure. Trends fade. Marketing language is forgotten. But a well-designed home keeps its clarity and calm for years. The materials age honestly. The spatial decisions remain sound. The colours don’t tire. This is what distinguishes interior design grounded in process from styling motivated by novelty. The Reveal is not the end of the project—it is the beginning of how you live in it.

How does residential interior design differ from commercial work?

Commercial projects—whether a dental practice, a hair salon, or an estate agent office—must serve multiple users and express a brand identity. The design decisions are public-facing; they communicate to clients and staff. Yet the process is identical: Discovery uncovers the actual spatial problems and user needs; Concept builds a direction; Concept, Design & Specification creates the detailed blueprint; Commission manages the build; Reveal shows what was possible.

Beaulieu Dental Practice, Fruittii Hair Salon, Keystones Estate Agent, and Tone at Canary Wharf each began with honest questions about how people move through the space, what they notice first, and what atmosphere supports their purpose. The difference from residential work is primarily intent—commercial interiors must also work as communication—but the rigour of process is the same. This is why a studio experienced in both understands how to read a space.

What questions should you ask a designer before you begin?

Ask what their Discovery process includes, and ask to see examples of how they’ve translated discovery findings into concept. Ask how they write specifications and whether they remain on site during Commission. Ask what happens if something doesn’t arrive as specified, or if unforeseen problems emerge. Ask them to show you finished projects and explain the decisions behind the material choices. A designer confident in their process will answer these questions clearly. They will not rely on their portfolio alone; they will explain the thinking behind it.

Also ask whether they work trend-led or principle-led. A designer who speaks about what is ‘in’ this season is optimizing for novelty, not for permanence. A designer who can explain why a particular material or colour serves your space—based on light, function, and the way you live—is designing for the long term. The finished home you step into at Reveal will tell you which approach they took. Choose accordingly.

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Common questions

How long does interior design for a home usually take?

The timeline depends on the scope and complexity of the work. Discovery through Concept, Design & Specification typically requires two to four months. Commission—the actual building phase—depends on the scale of work and coordination with contractors. Ask your designer for a realistic schedule based on your specific brief, not a generic timeline.

Can I use my own contractors during Commission, or must I use the designer’s team?

This varies by designer and project. Discuss it during the Discovery or Concept stage. A designer who manages Commission directly often oversees quality more closely, but some clients prefer to appoint their own builders. Either way, ensure the specification is detailed enough that any contractor can execute it consistently.

What if I change my mind about a design decision during Concept, Design & Specification?

Changes are normal and expected during these stages. They become more costly during Commission, when materials may have been ordered and contractors scheduled. The clearer your brief during Discovery, and the more thoroughly you work through Concept before moving to Concept, Design & Specification, the fewer expensive changes you’ll need later.

How much does interior design for a home cost?

Cost depends on the size of the space, the complexity of the work, and the quality of materials chosen. These are discussed during Discovery and Concept, and become precise during Concept, Design & Specification. Ask your designer how they structure their fees and how they ensure cost transparency before you commit to the project.

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