Read this first: there is no single "price" for interior design in Marbella — the number depends almost entirely on scope. We work to three broad scopes: design only, furnishing (FF&E and styling of an existing space), and renovation with furnishing (construction plus everything above). Any figure we give is project-specific, quoted in writing after we've seen a floor plan and brief, and sets out VAT (IVA) and exclusions explicitly rather than hiding them in a single lump sum. This guide explains how those budgets are built — so you can read any quote, from us or anyone else, with a clearer eye.
Three scopes, three very different budgets
Design only covers concept, space planning, technical drawings and specifications — the intellectual work that defines the project, without buying or building anything. Furnishing adds the FF&E layer: furniture, lighting, textiles, art and styling for a space whose layout you're keeping. Renovation with furnishing is the full turnkey scope — construction and fit-out plus all of the above — and it is, unsurprisingly, the largest of the three. Deciding which scope you actually need is the single biggest lever on your budget, which is why our guide to the interior design process and our turnkey cost guide are worth reading alongside this one.

Where the budget actually goes
On a full fit-out-and-furnishing project, the spend is weighted far more toward furniture and finishes than most people expect. A representative allocation across one of our completed Marbella apartments looked like this:
FF&E (furniture, fixtures & equipment) — 50% · Interior finishes — 11% · Bathrooms & tiles — 10% · Lighting — 7% · Kitchen & appliances — 5% · Doors & hardware — 3% · Custom elements — 2% · MEP systems — 1% · Logistics & installation — 1%.
The headline is that furniture and the final layer carry most of the budget — which is exactly why how you buy furniture (see custom furniture and FF&E) matters so much to the total.

Three recent projects, three scopes
Scope and size shape every budget. Three of our Marbella projects show the range:
Puente Romano — 225.43 m² apartment · fit-out + furniture. A complete re-plan of the interior into open, flowing living, dining and kitchen areas with serene private suites, in a warm palette of stone, wood, glass and metal, with bespoke furniture, integrated storage and custom kitchen, wardrobes and bathrooms.
Aloha Hills ("Cloud Dancer") — 243.81 m² apartment · fit-out + furniture. A full transformation into an open-plan home with architectural arched openings, natural walnut veneer and a master suite with walk-in wardrobe — our double European Property Awards winner, told in full in the before-and-after case study.
La Zagaleta Private Villa — design + furniture. A complete interior renovation that preserved the home's Spanish character while adding modern elements, including a full kitchen restoration — the approach behind our La Zagaleta interior.

What changes the price
Within any scope, a few decisions move the number more than anything else:
Keeping the layout versus moving it. Retaining the existing plan — working with the walls, kitchen and bathroom positions you have — is far lighter than relocating a kitchen or re-planning the layout, which pulls in MEP, construction and permissions. Standard furniture versus bespoke joinery. Catalogue pieces cost less than made-to-measure kitchens, wardrobes and wine cabinetry built for the room — bespoke buys fit and longevity, at a price. Furnishing versus structural renovation. Refreshing FF&E and finishes in a sound space is a different order of budget from a full structural renovation. None of these is "cheaper is better" — they're trade-offs, and the right call depends on the home and how long you'll keep it.

Managing a project from abroad
Most of our clients don't live in Marbella full-time, so the project has to run cleanly at a distance. Because Brunello by Kats is a single integrated holding — architecture, interior design, construction and custom-furniture production under one roof — the whole project sits with one accountable team rather than several contractors. It moves through five clear stages — brief, concept, design, production and delivery — with approvals and reporting at each, procurement handled through our own European factory network, and a final styled handover so the home is ready to live in, not a site to supervise. How we run that is the subject of our guide to choosing a studio.
Get an initial budget
The fastest way to a real number is to let us see the space. Send us your floor plan and a short brief — scope, style and how you'll use the home — and we'll come back with an initial budget discussion tailored to your property, with VAT and exclusions set out clearly. For the bigger picture of how we work, start with our pillar on interior design in Marbella.