Interior Design Costs in Sydney: A Straight-Talking Guide

The question we're asked more than any other is: how much does an interior designer cost?

OWNER AND DESIGN PRINCIPAL - NIC KAIKO

It's the right question to start with. Fear and uncertainty around design fees stops a lot of people from making the call at all. At Kaiko Design, our position has always been straightforward — transparency builds trust. So here is as clear a breakdown as we can offer, drawn from more than a decade of residential and hospitality projects across Sydney and beyond.

What Shapes Interior Design Costs in Sydney?

No two projects cost the same. But the variables that determine price are consistent. Before any studio can give you a meaningful number, four things need to be established.

Scope

Which rooms are you changing? Are you renovating structurally, or refreshing finishes and furniture? A whole-of-home project involving custom joinery, lighting design, and construction works is a fundamentally different proposition to a single-room refresh. The broader and more complex the scope, the greater the design hours required — and the higher the fee.

Style and Specification Level

The aesthetic you're after shapes the budget more than most clients expect. A colour-led interior sourced from quality Australian and international suppliers sits at a different price point to one furnished from mass-market retailers. Neither is wrong. But they produce different results, and the fee structure reflects that.

Timeline

Good design is not a fast process. At Kaiko Design, projects have ranged from focused eight-week scopes to multi-year collaborations spanning five or more rooms. Compressed timelines create real costs — expedited freight, premium trade availability, rushed procurement decisions. If you're planning to host Christmas in a newly designed space, start conversations in the first quarter of the year. Lead times for furniture and trades begin to bite from August onwards.

Budget

What are you comfortable investing in total — across fees, construction, and furnishings? The clearer you are on this number, the more precisely a studio can work. A defined budget is not a limitation. It is a design brief in itself.

How Interior Design Fees Are Structured

There is no single pricing model across the industry. The three most common approaches are:

Hourly rate — work is billed as it is completed, in monthly statements or blocks. Transparent in theory, but harder to budget for upfront.

Fixed fee — a set amount agreed at the outset, based on scope. Predictable for the client; requires the studio to scope carefully. This is how Kaiko Design structures its Design Phase.

Percentage of project cost — the fee is calculated as a percentage of total construction and/or furnishing costs. Common in larger residential and hospitality projects. Typically set at the outset based on estimated budget, with adjustments as the project evolves.

The Two Phases of a Full-Service Engagement

At Kaiko Design, a full-service interior design project is structured across two distinct phases.

Design Phase. This is where the heavy thinking happens. It covers concept development, spatial planning, floor plans and elevations, custom joinery and wall panelling design, lighting specification, materials and finishes selection, supplier coordination, and presentation of the completed design package. This phase is charged at a fixed fee, determined by scope and complexity.

Project Management Phase. Once designs are approved, the project moves into delivery. This covers trade briefings, procurement of all furniture and soft furnishings, regular site visits, trade and supplier liaison, delivery coordination, and defect management. This phase is billed at an ongoing hourly rate.

A note on procurement: it carries a separate fee. At Kaiko Design, the studio works with a trade supplier network that offers pricing unavailable at retail — that access is part of the value of the engagement, and the fee structure reflects it.

What Does It Cost to Furnish a Room in Sydney?

As a working guide, Kaiko Design Decoration projects run at $5,000 or more per room for furniture and soft furnishings — including window treatments and rugs. Art and accessories are typically budgeted separately, given how widely they vary.

This is deliberately a broad guide. A guest bedroom with a bed, bedside tables, and curtaining costs considerably less than a large living room with a sofa, armchairs, coffee table, bookshelf, rug, statement lighting, and full window treatment. The discipline is knowing where to concentrate spend — statement pieces where they earn their place, considered value choices everywhere else.

What Does It Cost to Renovate in Sydney?

Sydney renovation costs have risen significantly over recent years, shaped by trade availability, materials pricing, and project complexity. Based on current project experience, a realistic guide is:

• Bathrooms: from $50,000 for a standard renovation; $80,000–$120,000+ for a primary ensuite with premium fixtures and finishes

• Kitchens: from $80,000; $120,000–$150,000+ depending on size, configuration, and specification level

These figures are a basis for a realistic conversation with your builder — not a number to budget to the dollar. Kaiko Design can connect clients with a trusted trade network as a starting point.

For current figures across a broader range of project types, see our interior design cost guide for Sydney.

The only reliable way to price a renovation is through a comprehensive drawing set. Detailed documentation is what enables fixed-price tenders from builders. Without it, quotes are estimates. With it, comparisons become meaningful — and budget certainty becomes achievable.

The Real Value of Engaging a Designer

If you're approaching this for the first time, it's worth understanding what to expect when hiring an interior designer before the conversation begins.

Engaging an interior designer is not simply a line item in a renovation budget. It is a decision about how your home is designed, sourced, and delivered. The right studio reduces costly mistakes, brings access to products and trades unavailable at retail, and provides a process that makes a complex, high-stakes project manageable.

The more useful question is not what a designer costs. It is what the project costs without one.

Kaiko Design specialises in residential interior design in Sydney, from single-room refreshes to whole-of-home renovations.

Let's Talk About Your Project

The best next step is a conversation. A rough floor plan and a sense of what you want to achieve is all that is needed to get started — even a real estate plan is enough. Not sure how to frame your project? Our guide on how to brief an interior designer is a useful starting point. Kaiko Design offers an initial discovery call to discuss your project, understand your brief, and give you an indicative sense of our involvement before anything is formalised.