It is one of the most searched questions in our industry, and it is a completely fair one to ask. Interior design sits in an interesting space. Most people have a strong instinct for what they like, so it can be hard to know where their own taste ends and a professional’s value begins.
This guide is for anyone who has ever thought “I could probably do this myself” and is genuinely weighing up whether working with a designer is worth it. We will be straight with you — including about when it might not be.
The Short Answer
An interior designer does far more than choose paint colours and nice cushions. At its core, the job is about solving problems — spatial problems, functional problems, lighting problems, proportional problems — and solving them in a way that also looks beautiful.
A good interior designer is equal parts architect (understanding how spaces work), project manager (making sure things happen on time and on budget), and stylist (bringing it all together with an eye trained over years of looking at spaces).
What We Actually Do, Specifically
SPACE PLANNING
Before we choose a single piece of furniture, we look at how a room — or an entire house — flows. Where are the natural circulation routes? Does the furniture scale correctly to the room? Do furniture choices block the windows? Is the TV in a position that requires you to crane your neck?
Good space planning is invisible when done well. You simply walk into a room and it feels right. When done badly, you often cannot identify exactly why a room feels awkward — you just know that it does.
LIGHTING DESIGN
Lighting is the single most underestimated element of interior design. It also makes the biggest difference to how a home feels. Most homes in the UK rely almost entirely on a single central ceiling light per room. This produces flat, unflattering light that makes even beautiful spaces feel institutional.
We design layered lighting schemes for every room: ambient light, task light, and accent light, all on dimmers. The difference between a house with well-designed lighting and one without is extraordinary. You cannot fix it after the fact without significant disruption.
MATERIAL AND FINISH SPECIFICATION
Choosing a marble for a bathroom floor, a fabric for a sofa, or a paint finish for a kitchen takes a knowledge of how materials perform over time, not just how they look in a showroom. We know which fabrics hold up to children and pets, which stones are practical for kitchen countertops, which paints need two coats versus three, and which hardware finishes will last and which will not.
This knowledge takes years to accumulate and prevents costly mistakes.
SUPPLIER ACCESS AND TRADE PRICING
A significant proportion of the furniture, fabric, lighting, and tile market is trade-only — meaning it is simply not available to the general public, regardless of budget. Working with a designer gives you access to this world, which is where much of the best product sits.
We also negotiate on your behalf, manage quality control on deliveries, and deal with any issues that arise — none of which is a small thing when you are spending significant sums.
PROJECT MANAGEMENT
FFor renovation projects, we manage every contractor involved — builders, electricians, plasterers, decorators — and coordinate their work to a clear schedule. We attend site regularly, identify problems before they become expensive, and keep the project moving.
Managing a renovation yourself, while also holding down a job and a family, is genuinely one of the most stressful things a homeowner can take on. Many of our clients tell us, after their first project with us, that they cannot imagine doing it any other way.


When Might You Not Need a Designer?
In the spirit of honesty: if you are redecorating a single room, have a clear sense of what you want, and enjoy the sourcing process, you may not need us. Interior design fees are an additional cost, and for straightforward projects the value exchange may not stack up.
Signs It May Be Worth a Conversation
However, if any of the following apply, it is worth getting in touch:
- You are undertaking a significant renovation involving structural changes, new layouts, or multiple rooms
- You have tried decorating yourself and something always feels slightly off — even when individual pieces are nice
- You do not have the time or inclination to manage contractors and suppliers yourself
- You want an exceptional result and want to get it right the first time
- You are buying a property to renovate and want to understand what is possible before you commitYou want an exceptional result and want to get it right the first time
What Working With Us Looks Like
Our studio is in Wimbledon Village, and we work with clients across London, Surrey, and internationally. We hold BIID registration — the British Institute of Interior Design — which means we meet their professional standard of practice and code of conduct. Our projects range from single rooms to whole-house transformations and new builds.
We offer a structured, transparent process with fixed design fees. There are no surprises, no hidden costs, and we agree a clear brief at the outset. The first conversation is always complimentary. If you are curious about what working with us might look like for your home, we would love to hear from you.



FAQ
What is the difference between an interior designer and an interior decorator?
An interior decorator focuses on the visual finish of a space — furniture, colour and accessories. An interior designer works at a deeper level. We address space planning, lighting, structural layouts and material specification. The result is a home that works as well as it looks.
How much does an interior designer cost in London?
Fees vary depending on the scope of the project. Most designers charge either a fixed fee or a day rate. At Tania Azadian Interiors, we offer transparent, fixed design fees. There are no hidden costs and no surprises. We agree a clear brief and budget at the outset.
How do I find a good interior designer in London or Surrey?
Look for a designer who is BIID registered. This means they are held to a professional standard and code of conduct. Review their portfolio carefully. Does their aesthetic suit your home? A good designer will also be honest about whether they are the right fit for your project.
Do I need an interior designer for a single room?
Not always. If you have a clear vision and enjoy the sourcing process, you may manage well on your own. However, if something always feels slightly off — even when individual pieces are nice — a designer can identify why. Sometimes one session is enough to unlock a room.
What should I expect from my first meeting with an interior designer?
The first conversation should be exploratory and relaxed. A good designer will ask about how you live, not just what you like. They will want to understand your budget, timeline and priorities. At Tania Azadian Interiors, the first conversation is always complimentary.

