Architect or Interior Designer: Who Do You Need First?
Who does what, what registration means in India, and how to decide before you hire anyone.
The architect's drawings and the interior designer's samples, on one table.
Three pictures in this article are AI-generated concept illustrations: a studio table, and one imagined room shown unfinished and finished. None shows a completed Team Design Architects project. The diagram was drawn for this article.
People often ask whether they should hire an architect or an interior designer. The honest answer depends on what is going to change. If it is the walls, the plan, the services or the building itself, you need an architect. If it is what sits between the walls, an interior designer may be all you need. Most real projects are some of each.
This guide sets out what each one does, what registration means in India and how to check it, and how to decide for a new home, a renovation or a refresh. We do both at Team Design and treat them as one discipline, so we are not neutral. We have tried to write what we would tell a friend.
Architect vs interior designer: what each one does
An architect designs the building. That means where it sits on the plot, how the sun and wind reach it, how it stands up, how the rooms connect, and how water, power and air get to them. Architects also prepare the drawings for municipal approval and can supervise the work on site. In Mumbai, building proposals go to the municipal corporation from an architect or a licensed surveyor, acting for the owner. [4]
An interior designer designs what happens inside the shell: finishes, colour, furniture, joinery, lighting, curtains, and the way a room is styled and used. A good one also thinks about how people move through a room and where the sockets and switches go.
The two overlap in the middle, on room layouts, kitchens and bathrooms, ceilings, doors, windows and the budget. Where they overlap, the useful question is who is accountable for it.
The shell and the fit-out
The first picture shows an imagined room before anything is finished. There are block walls, a window opening, a door frame, and white conduit and pipe runs fixed to the wall. Those runs are decisions. They fix where a tap, a switch or a light can go, and moving them after the wall is plastered means cutting it open again. Whoever designs the inside should already have thought about the furniture, the kitchen and the lighting at this stage. That is why our advice is to involve them while the walls are still bare.
The second picture shows the same room finished. The window, the door and the view are unchanged, because the decisions about the shell stayed where they were. What changed is what an interior designer decides: the floor, the joinery, the light fittings, the colours and the furniture.
What a registered architect means
In India the word architect is protected by law. Under the Architects Act, 1972, only a person registered with the Council of Architecture may use the title. In 2020, in Council of Architecture v. Mukesh Goyal, the Supreme Court held that the Act stops unregistered people from using the title but does not stop them from practising architecture. [1] So the title is the thing to check. It tells you that someone holds a recognised qualification and is registered. It does not tell you they are right for your project.
In August 2026 the Council issued a public advisory warning against unregistered people using the title, and urged builders, developers and municipal bodies to verify credentials. [2] You can do the same in a minute. The Council's website has a Verify Your Architect search, and any architect should give you a registration number on request. [3]
Interior design works differently. We know of no law in India that protects the title interior designer, so, as far as we know, anyone may use it, and standing comes from training, portfolio and references. The Indian Institute of Interior Designers, founded in 1972, is a professional body with about 10,000 members in 35 chapters, according to its website. [5] Membership is a useful signal, but as far as we know it is voluntary. Many interior designers are well trained and very good. The absence of a register only means the checking is yours to do.
Who do you need?
A new house or an extension
Start with an architect. The site, the structure, the approvals and the services come first, and the inside follows from them. Bring in whoever will design the interior during design, not after the shell is up. Ask whether the architect's studio does interiors, as ours does, or works with designers you will meet early.
A renovation that moves walls, bathrooms or openings
Start with an architect, with a structural engineer where walls or slabs are touched. Moving a wall can change how loads travel, and moving a bathroom or kitchen moves pipes and drains. Permissions may apply, from the municipal corporation or, in a flat, from your society, so ask before anything is demolished. If the question is whether to keep an older building at all, see Renovate, Adapt, or Rebuild?.
A refresh of finishes only
An interior designer may be all you need: new floors, joinery, lighting, paint, curtains and furniture, with the walls staying where they are. Even then, ask whether the work touches wiring or plumbing, because that is where small jobs quietly become larger ones.
Both, together
Many homes need both, sometimes within one team. Whichever route you take, one person should be accountable for the whole, and the decisions about the shell and the fit-out should be made together.
Ask whoever you are considering
- Are you registered with the Council of Architecture, and what is your registration number?
- Who will draw and sign the drawings, and who will be on site?
- What do you decide yourselves, and what will you leave to others?
- Which similar projects have you finished, and may I speak to those clients?
- How are your fees set, and what do they cover?
- Who is accountable if the shell and the fit-out do not meet?
We explain how architect fees work, with an indicative estimator, on our fees page.
Planning something like this? Talk to the studio.
Questions we are asked
What is the difference between an architect and an interior designer?
An architect designs the building: where it sits on the plot, its structure, plan, light, air and services, and the drawings for approval. An interior designer designs what happens inside: finishes, joinery, furniture, lighting and colour. The two overlap on room layouts, kitchens, bathrooms and budgets.
Can an interior designer do an architect's work?
Not under the title. Only a registered architect may use the word architect, although the Supreme Court has held that unregistered people are not barred from practising architecture. [1] In Mumbai, building proposals are submitted to the municipal corporation by an architect or a licensed surveyor. [4] Ask what the person you are considering is qualified and permitted to do.
Do I need an architect for a home renovation?
If the work moves walls, bathrooms, kitchens or openings, or touches the structure, yes, with a structural engineer where walls or slabs are involved. If it changes only finishes, furniture and lighting, an interior designer may be enough.
How do I check that an architect is registered?
Use the Verify Your Architect search on the Council of Architecture's website, and ask the architect for their registration number. [3]
Should I hire an architect and an interior designer?
For a new house, usually both, or one studio that does both. The important part is to bring in whoever designs the interior before the walls are plastered, while pipes and wiring can still move.
The short version
If the walls, the plan, the services or the approvals will change, begin with an architect. If only the finishes will change, begin with an interior designer. If you are not sure which case you are in, ask an architect, and expect a good one to tell you when you do not need one.
To see how we run both under one roof, read about our process, look at the home interiors we have designed in Mumbai or the bungalows we have designed, or see what an architect costs.
Terms used in this guide
- Council of Architecture: the statutory body in India that maintains the register of architects under the Architects Act, 1972.
- Fit-out: the interior work done inside a finished shell.
- Joinery: built-in woodwork such as cupboards, shelves and panelling.
- Licensed surveyor: a licensed technical person who may submit building proposals to the municipal corporation on an owner's behalf.
- Services: the pipes, wiring and ducts that bring water, power and air into a building.
- Shell: the structure and walls of a building before interior finishing.
- Structural engineer: an engineer who designs and checks the structure of a building.
Sources
[3] Council of Architecture. Verify Your Architect, coa.gov.in.
[5] Indian Institute of Interior Designers (IIID), iiid.in.
Research accessed 1 October 2026. We know of no law that protects the title interior designer, but we have not checked every state rule. The advisory is as reported by the Free Press Journal. Descriptions of how the roles divide are typical, not universal. The pictures illustrate ideas, not completed work.