The stages at a glance
Designers describe their process in different ways. Some use five phases and some use seven or more, but the underlying sequence is similar: talk, plan, design, document, build or order, install, and wrap up. The version below uses seven stages, which is how some practising designers lay out their own workflow. If a designer you meet uses five phases, they have probably combined a few of these.
The details depend on the size of the project. A single-room refresh may skip construction altogether, while a renovation adds drawings and trade coordination. For the bigger picture of the client relationship, see our guide to working with an interior designer.
Stage 1: Initial consultation
The designer learns about your project, and you learn about them. Expect questions about your style, the way you use the space, your budget and your timeline. Some designers charge for this meeting. Afterwards, they typically send a proposal outlining services and fees. The questions to ask an interior designer are worth using here.
Your part: bring photos, measurements if you have them, inspiration images and a budget range.
Stage 2: Onboarding and site measure
Once you decide to proceed, you sign an agreement and usually pay a first instalment. The designer may send a welcome pack or questionnaire, and then visit to measure the space and photograph existing conditions.
Your part: review the agreement, ask about anything unclear, and share access to the property.
Stage 3: Concept development
The designer pulls together the overall direction. This can include layouts, mood boards, colour and material palettes (see mixing warm and cool tones), and sometimes 3D drawings. The goal is to agree on a look and a plan before details are fixed.
Your part: react honestly, say what works and what does not, and approve the direction before the project moves on. Changes are usually easiest and cheapest at this point.
Stage 4: Detailed design and documentation
For larger projects this tends to be the longest stage. The designer prepares detailed drawings, such as scaled plans, elevations and joinery or cabinetry details, plus a schedule of furniture, fixtures and finishes with specifications and prices. Budgets are refined against real quotes.
Your part: check the schedule and budget carefully. Changes after ordering can be costly or impossible.
Stage 5: Ordering and construction
Products are ordered, and if the project involves building work, contractors begin. Designers often track lead times, since custom or imported items may take weeks or months to arrive, and may coordinate with trades or visit the site to check progress. Who orders and pays for what depends on your agreement; see interior designer fees for how purchasing is commonly handled.
Your part: approve orders promptly, expect some delays, and keep a contingency in your budget.
Stage 6: Installation and styling
Furniture, window treatments, lighting and accessories are delivered and placed. Designers typically schedule deliveries, supervise placement and finish with styling touches such as art and accessories.
Your part: be available for key delivery days and flag any damage or issues straight away.
Stage 7: Completion and handover
The designer walks through the finished space with you and lists anything left to fix, sometimes called a snag or punch list. You receive final documentation, such as care instructions and product details, and any final payments are made.
Your part: inspect carefully and raise outstanding items in one list.
How long it takes
There is no standard timeline. A one-room furnishing project can take a couple of months, largely because of delivery lead times, while renovations commonly take considerably longer. Ask your designer for a realistic schedule and what could affect it.
Common questions
What are the stages of an interior design project?
Typically consultation, onboarding and measuring, concept, detailed design, ordering and construction, installation and styling, and completion. Some designers group these into five phases.
What is the 3-5-7 rule in interior design?
This is usually mentioned as a styling guideline about grouping decorative objects in odd numbers, such as three, five or seven. It is not a project phase, and different sources describe it differently, so treat it as a loose styling tip.