If you’re planning a renovation, it’s completely normal to feel a bit unsure about who does what. Architect… interior designer… builder… where does one role end and the next begin?

It’s a question I hear often, especially from clients who want to get things right from the outset but aren’t quite sure how to structure their team.

So, let’s demystify it – because understanding how an architect and interior designer working together can shape your renovation makes a huge difference to both the process and the finished result.

The Architect: Laying the Foundations

At the very start of a renovation, the architect typically takes the lead.

They’re responsible for the structural design of your home – measuring and surveying the existing building, designing changes to the layout or exterior, and ensuring everything complies with UK planning permission and building regulations.

In short, they make sure your home works on a fundamental level.

Where the Interior Designer Comes In (Earlier Than You Might Think)

One of the biggest misconceptions I see – particularly here in Shropshire – is that an interior designer is something of a finishing touch.

In reality, the most valuable work often happens much earlier.

Bringing an interior designer into your renovation project from the outset means:

• Your floor plan and furniture layout is designed and agreed well before lighting and electrical plans are approved and before walls are fixed in place. Avoiding costly changes later on.
• Storage is properly planned, especially important in older or character properties 
• The location of the bathtub and whether one of you absolutely must have a double sink has been resolved well ahead of the plumber first fixing pipework, and before decisions become expensive to change 

Without this early input, you can end up with a beautifully designed structure that doesn’t quite support your day-to-day life or the mood and atmosphere you want to create.

A well-planned space isn’t just about how it looks – it’s about how it works day to day,

with storage and layout considered from the very beginning

The Overlap: The sweet spot in any renovation project

We work on interior renovation projects across Shropshire and Powys. Where an architect has also been involved in any of these projects, I have rarely (never) had a neat handover from the architect to myself, the interior designer. Instead, there’s been a period where both roles overlap – and this, from my experience, is of huge benefit to the client and the project as a whole.

This tends to happen during the detailed design stage, when ideas begin to take shape.

It’s when:

• Room layouts are refined and tested 
• Sightlines and traffic flow through and around each space are properly considered 
• Kitchens, bathrooms, and joinery begin to take shape 
• Lighting and electrical layouts are developed 

In short, the point where ideas move from concept to real life.

An architect might design a stunning open-plan space – but without considering furniture placement, you could find yourself with a sofa floating awkwardly in the middle of the room or a lighting system that doesn’t meet the practical needs of the homeowner or the aesthetic needs of the space.

This is where an interior designer adds real value – ensuring your home feels as good as it looks.

When the Balance Shifts

Once the structure and overall layout are agreed, the balance naturally begins to shift.

The architect often remains involved – particularly around compliance, structural elements and sometimes site inspections – but the focus moves firmly towards interior finishes.

This is where the interior designer takes the lead.

They’ll guide the project through:

• Detailed design development 
• Finishes and materials 
• Bespoke joinery 
• Furniture, lighting, and accessories 
• Coordination with trades and suppliers 
• Managing procurement and the installation process

Read more about this stage of the interior design process here Procurement Explained

At this stage, it’s about ensuring everything comes together cohesively and that the vision you’ve invested in is properly realised.

A layered lighting scheme is developed early on in the project as part of the interior design process – Full kitchen renovation in Shropshire

Why Collaboration Matters So Much

I’ve worked on renovation projects where I’ve never even met the architect – where the architectural stage was completed before I came on board.

And while those projects can still be successful, it often feels like something has been missed.

A slightly awkward layout.
A missed storage opportunity.
A lighting plan that doesn’t quite deliver.

When your architect and interior designer collaborate from the beginning, those details are considered early – when they’re easiest (and most cost-effective) to get right.

The Takeaway

If you’re planning a renovation, think of your architect and interior designer not as separate – but as a team. When you have an architect and interior designer working together from the very beginning, those important details are considered early – when they’re easiest to get right.

Bringing them together early helps you:

• Avoid costly design changes later 
• Make confident decisions from the outset 
• Save time (something most of my clients don’t have much of) 
• Create a home that feels considered, cohesive, and entirely yours 

Because a successful renovation isn’t just about the structure.

It’s about how your home supports your life; quietly, beautifully, every day.

Thinking About Your Own Renovation?

If you’re at the early stages of planning and want clarity on how your home could work before you commit to hiring, my Home Design Consultation (link here) is designed to give you exactly that.

This focused design session can be used to come up with a realistic strategy for your project, enabling you to move forwards with a clear plan and a greater understanding of the steps required to achieve your goal. 

Kate x