Studio Contour vs Splitting Architecture, Interiors and Sanction Across Three Vendors
Somewhere between the point where you finalise a plot in New Town and the point where you actually move in, you have to decide how many companies are going to be involved, and most homeowners do not treat that as a design decision at all, they treat it as a procurement decision, so they hire an architect for the drawings, a separate interior firm for the inside, and a liaison consultant or a local draughtsman for the sanction file, on the reasoning that each one is a specialist and specialists are better. That reasoning is not wrong, and the three-vendor route genuinely works for some people, but the thing it quietly adds is coordination work, and that work does not vanish just because nobody priced it, it lands on you.
We have been designing and delivering in this belt since 2014, with 330+ buildings completed across New Town, Salt Lake, Rajarhat and greater Kolkata, and what we see over and over is that the hard part of a house is rarely a single drawing, it is the seams between drawings, so a comparison between one accountable studio and three capable vendors is really a comparison of who owns those seams. This piece lays out how each model behaves in practice, where the split genuinely wins, and how to pick honestly.
Where the seams actually are in a Kolkata build
A house has maybe five or six handover points, and every one of them is a place where information can arrive incomplete, right. The architectural layout has to reach the sanction file in a form the authority expects. The sanctioned drawing has to reach the structural design so that column positions match the rooms people were shown. The interior layout has to reach the electrical and plumbing plan before plaster closes the walls, because a kitchen island with no floor point under it becomes a very expensive regret. The lighting and false ceiling layout has to reach the civil team before ceiling levels get cast, and the modular kitchen supplier has to have the exact wall as built rather than the wall as drawn.
In a single-vendor arrangement each of those handovers is an internal conversation between people who sit in the same studio and share the same file, so the correction happens in a morning. In a three-vendor arrangement each handover is a message between two companies who have separate contracts, separate site visit schedules and separate commercial interests, and the person holding both threads is the homeowner. This is a structural property of the model, not a comment on anyone's competence, because a good interior firm still cannot know what the architect changed in revision four unless someone tells them.
What curated actually means when we say it
Curated is a word that gets used loosely, so here is what it means operationally in our studio. We do not hold a catalogue of house types that we adapt to your plot, we start from your plot, and for a New Town plot that means the road width, which side the approach comes from, the neighbours' existing heights, the direction the afternoon sun hits your west wall, and how the permissible envelope reads for that specific plot rather than in general. The concepts of floor area ratio and setback govern how much you can build and where it can sit, but the applicable multipliers and margins differ by plot category and get revised periodically, so we treat every number as indicative until it is confirmed against the current rules for your plot with the relevant authority, and we do that confirmation before we draw, not after you have fallen in love with a layout.
Personalised means the same discipline applied to options. Instead of three pre-priced packages where the middle one is the one you are meant to buy, we scope layout, material palette, elevation treatment and budget per project, so a family with two elderly parents gets a different ground floor from a family with two toddlers even on an identical plot. If you want a Vastu-aligned plan, it is worked into the structural grid from the first sketch rather than bolted on, because Vastu Shastra preferences about entry, kitchen and sleeping orientation are much cheaper to honour at layout stage than at plaster stage. Our residential architecture and interior design work is scoped as one brief for exactly this reason.
| One accountable studio | Three separate vendors |
|---|---|
| Coordination between architecture, interiors and sanction is internal and unbilled | Coordination is the homeowner's job unless someone is paid to own it |
| Drawing revisions propagate to interiors and services automatically | Each revision must be forwarded, explained and confirmed to two other parties |
| One party is answerable when something on site does not match the drawing | Responsibility can legitimately sit with whichever vendor was not in the room |
| Budget is scoped once across the whole project | Three budgets are scoped separately and overlaps or gaps appear late |
| You may have fewer specialist options in any single niche | You can hand-pick the strongest specialist for each discipline |
How continuous support changes what happens on site
The gap most homeowners do not anticipate is the one after drawings are issued. A drawing-only engagement ends when the set is delivered, and from that point the contractor is interpreting intent without the author present, so decisions get made by whoever is standing on site at 11 a.m. In our model the same team that drew the house stays attached through the sanction route and on into execution, which means when a beam has to shift by 150 mm because of a service duct, the person deciding where it shifts to is the person who knows why the room was that size. We also stay on the NKDA sanction process with you rather than handing the file to a third party and hoping, and the same applies for KMC and Bidhannagar routes where the document set and queries differ.
The other thing continuity buys you is control over scope creep. Changes are not the enemy, unmanaged changes are, so when you decide mid-build that the guest bedroom should become a study, we can tell you in the same conversation what it does to the electrical layout, the furniture order and the cost, rather than you discovering the knock-on three weeks later from a different vendor's revised invoice.
- 01Brief and plot study
- 02Layout options and elevation
- 03Sanction file and authority queries
- 04Structural and services coordination
- 05Interiors, fit-out and site supervision
- 06Handover and snag closure
The principal architect stays on the project
Scale forces a trade-off in staffing, and it is worth being plain about it. A large multi-city firm allocates a senior architect across many projects at once, so your day-to-day contact is often a junior, and that is simply how that model scales, there is nothing improper about it. Our structure is different because it is smaller: Sumana Kumar, our principal architect, stays attached to projects through execution rather than appearing at the pitch and disappearing after signature, which means design intent is defended by the person who set it. You can see how that plays out in delivered work such as the Meander House project in Salt Lake, and if you want to understand the trade-off in general terms, our note on an architecture firm versus a solo architect in Kolkata sets out both sides.
- Ask who your day-to-day contact will be, by name
- Ask who owns coordination between architecture, interiors and services, in writing
- Ask what happens to the engagement after drawings are issued
- Ask whether the sanction file is handled in-house or passed to a third party
- Ask for the fee breakup by stage rather than one lump figure
When splitting across three vendors is the better call
There are real situations where the split is the right answer, and pretending otherwise would be selling rather than advising. If you are building something highly specialised, say a commercial space with a technical requirement that needs a dedicated consultant, a specialist for that one scope can be genuinely better than a generalist studio. If you already have a trusted interior designer from a previous home and the relationship matters more than the workflow, keep them. If you or a family member has real construction experience and time, you can run the coordination yourself competently and save the fee attached to it, which is essentially the logic behind design–bid–build as a delivery route. And if your project is a small renovation where the interior scope dwarfs the architectural scope, hiring an interior specialist directly is often the cleaner move.
The one case where we would push back on the split is when nobody is nominated to own coordination and the assumption is that the vendors will sort it out among themselves, because they usually cannot, since none of them has authority over the others. If you are still deciding sequencing, our piece on whether to hire the architect or the interior designer first works through that, and for cost expectations the cost to build a house in New Town guide gives indicative ranges rather than a quote, because a firm number needs your plot, your brief and your specification level.
Making the decision without guessing
Reduce it to three questions. First, how much of your own time can you realistically give to coordination over eighteen to twenty-four months, honestly, including the weeks when work gets heavy. Second, how tightly coupled are your architecture and interiors, because a house where the joinery, lighting and structure are deeply integrated punishes a split far more than a house with a simple plan and independent interiors. Third, who carries the consequence when something on site does not match the drawing, and if the answer is you, price that in. Basically, one studio costs you some specialist optionality and buys you a single accountable line, while three vendors buy you specialist depth and cost you the coordination load.
At the end of the day both routes build houses, and the failures we get called into fixing are almost never caused by a bad drawing, they are caused by a good drawing that nobody carried through to the next stage. If you want to talk through which model fits your plot and your brief, with a candid view on where we are genuinely the right fit and where we are not, get in touch with our studio and we will start with your plot rather than with a package.