Studio Contour, Architect & Interior Designer
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By Sumana Kumar•Sep 24, 2026•Room Guides

Master Bathroom and En-Suite Design in Salt Lake

Master Bathroom and En-Suite Design in Salt Lake

Master Bathroom and En-Suite Design in Salt Lake

If you are reading this you most likely have a flat or a house somewhere in the Salt Lake blocks, the master bedroom is more or less settled in your head, and the bathroom attached to it is the part of the plan that keeps getting postponed, because every decision inside that room touches plumbing, waterproofing, electrical and tiling at once, and once the screed has gone down and the tiles are laid, changing your mind stops being a conversation and starts being money.

A master bathroom is a small room carrying a heavy load. Basically it has to hold a shower, a WC, one or two basins, storage for everything two adults use every single day, ventilation strong enough for a city that stays humid for months at a stretch, and lighting that works at six in the morning and at midnight, all inside a footprint that in most Salt Lake homes is fixed between the bedroom wall and a plumbing shaft somebody positioned decades ago. The quality of the finished room comes almost entirely from how honestly that constraint is planned around, and very little from the brand name on the fittings.

Studio Contour has been designing homes across the Salt Lake, New Town and Rajarhat belt since 2014, with 330+ buildings delivered, and the en-suite is the room where we are most insistent that layout and services get resolved on paper before anything at all is bought, because the order in which these decisions are taken matters more here than anywhere else in the house.

Interior from the Riverside Full-Home Interiors project by Studio Contour in Kalyani, West Bengal

Start with the stack, not with the sanitaryware

The first thing we look for in an en-suite is not the shower, it is the soil stack, because almost every other decision bends around it. In the older Salt Lake houses, the ones built anywhere from the sixties through the nineties, bathrooms were stacked floor above floor on a single shaft running down an outside wall or an internal duct, and the WC sat close to that shaft because waste needs a short run and a steady fall. Moving the WC across the room is possible, but it means a new gradient, a thicker floor build-up or a sunken portion reworked, and where the duct is shared it can mean opening up something that also serves the floor below, so what reads as a small change on a drawing turns into a plumbing and sometimes structural exercise on site. In the newer G+3 and G+4 rebuilds that now stand beside those older houses the shaft is usually larger and better placed, which genuinely buys you room to shift a basin or even the WC, right, so we measure the ducts and check floor levels before anyone draws a bathroom plan for you.

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Resolve the layout before you buy anything The most expensive mistakes in an en-suite are made at the shopping stage, when fittings are chosen before plumbing positions and floor levels have been confirmed. Fittings are easy to pick once the plan is honest about the shaft.

Wet and dry zoning in a room that is rarely generous

Most en-suites here land either in a narrow strip running along the bedroom wall or in a squarish room off a corner, and in both cases the most useful single move is to separate the part of the room that gets wet from the part that has to stay dry. That means the basin, the mirror and the storage sit near the door where you use them with dry hands, the shower goes to the far end so the floor fall runs away from the threshold rather than towards it, and the WC sits between them with real clearance in front of it instead of the bare minimum a drawing can get away with. The choice between a full enclosure with a hinged door and a low kerb with a fixed glass screen deserves proper thought, because a hinged door needs swing clearance a tight room usually does not have, while a fixed screen with the mixer placed so you can reach it without standing in the cold spray reads larger and cleans faster. For instance, a towel within reach from inside the shower, a niche at the right height rather than a caddy hanging off the tiles, and a shaver socket where somebody can stand in front of the mirror are the details that decide whether the room is pleasant to use.

Light and air when the neighbour is already built to the boundary

Salt Lake is a planned grid of blocks and sectors, the plots are regular but tight, and in most blocks the neighbour has already built close to the boundary, so light and air have to be collected off your own plot rather than borrowed across somebody else's. The master bathroom is usually the room that loses that argument, because the bedroom quite rightly takes the better wall, and the en-suite ends up against a party wall or facing a narrow duct. That is solvable as long as it is accepted early: a high-level window or louvre onto whatever open edge exists, obscured or reeded glass so the opening can be larger without a privacy problem, and a mechanical exhaust sized for the actual volume of the room and ducted to a real outlet instead of being dumped into the false ceiling cavity. Through a long humid stretch and a serious monsoon the exhaust does most of the work, and the difference between a bathroom that dries out between uses and one that smells of damp by August is almost always the duct run and the door undercut rather than the tiles.

Lighting the mirror, and the ceiling that hides the services

The mirror is where bathroom lighting either works or quietly fails, because a single downlight dropped above it throws shadow straight down a face, which is exactly wrong for shaving or for makeup, so light wants to come from the sides of the mirror or from a diffused source in front of it, with the general ceiling light doing a separate job. The wet zone needs fittings and a circuit suited to damp conditions, the geyser wants to sit where its pipe run is short and where it can be reached, and the false ceiling has to be set at a level that lets the exhaust duct and the pipework cross without a bulkhead landing in front of the window. We also insist on an access hatch over the geyser and the trap, because the day something leaks you do not want to be cutting open a finished ceiling to find it. For how ceiling, cove and fittings get layered together, our work on false ceiling lighting design goes further than one section can.

Waterproofing, slopes and the humid months

Waterproofing is the part of the job nobody sees and everybody pays for twice when it is rushed. In a sunken portion that means the membrane carried up the walls well above finished floor level, a bund at the door so water cannot track into bedroom timber, careful detailing where the drain and the pipes pierce the membrane, and a ponding test with the bay filled and left standing before a single tile goes down. Slopes matter as much, because a floor that falls evenly to the drain from every corner is a function of setting out and not of luck, and a shower area holding a puddle will grow mould in the grout however good the membrane under it is. Material choice feeds the same question, so porous natural stone in a wet zone needs a sealing routine somebody has to keep up, and a large format tile with fewer joints is easier to clean but needs a flatter bed.

Storage, mirrors and the things people wish they had asked for

The storage brief for a master bathroom is more specific than people expect, and it is worth writing down before any carpentry is ordered: drawers rather than deep shutters for the small daily things, somewhere tall for a hair dryer and a steamer, open or louvred space for towels, and a cabinet for medicines that is not the vanity where water sits. Carcass material matters because this is the one room where moisture is permanent, so the choice between marine plywood with properly sealed edges and a WPC or aluminium carcass carries a cost consequence and a longevity consequence, and we put both in front of you rather than deciding quietly on your behalf. Anything recessed has to be settled early, since a niche in the shower wall or a mirror recess is set out at blockwork stage, before plaster, when it costs almost nothing, because cutting one later into a tiled wet wall is a different job altogether.

Where the cost actually moves

We present options with their cost consequence attached, because that is the only way a client can steer a budget instead of discovering it. In an en-suite the money is not spread evenly, and knowing where it concentrates lets you spend deliberately.

Decision
What it changes on site
Cost consequence
Moving the WC away from the stack
New fall to the stack and often a sunken bay reworked
The largest single swing in an en-suite budget
Full enclosure instead of a low kerb and screen
Door swing clearance and the shower tray detail both change
Moderate and mostly one-time
Niche or recess in a wet wall
Set out at blockwork stage before plaster
Almost nothing now and heavy later
Natural stone in the wet zone
Sealing routine and a slower tiling programme
Higher on material and higher on upkeep
Studio ContourA turnkey bathroom package
Layout resolved for your actual shaft and slab before anything is boughtLayout adjusted to fit a package costed before the site was seen
The principal architect stays on the project through sanction and siteSenior sign-off at the start and a supervisor running the job after that
Every option presented with its cost consequence so the budget moves with your decisionsA headline figure that moves later through variation slips
Drawings and the Bidhannagar sanction route sit with one teamYou carry dimensions and drawings between separate vendors

That last point is practical rather than philosophical. If the bathroom sits inside a rebuild or an extension, the same drawings have to satisfy the building authority for Salt Lake, also written Bidhan Nagar, which is Bidhannagar Municipal Corporation, and what applies to your particular plot has to be confirmed for that plot rather than assumed, since coverage, setbacks and permissible heights all vary. If you are on a small plot we have set out the route in detail in Bidhannagar Municipal Corporation Building Plan Sanction for a Narrow Plot Under 3 Katha in Salt Lake, and if an earlier floor or a previous owner's work has drifted from what was sanctioned, Sanctioned Plan Deviation Regularisation Under Bidhannagar Municipal Corporation in Salt Lake: A Plot Owner's Guide explains what that means before you start opening up walls. Where the en-suite is part of a larger piece of work it is handled inside our residential architecture scope rather than as a standalone fit-out.

The order the work actually happens in

  1. 01Survey the bathroom and record stack positions and floor levels
  2. 02Lock layout services and finishes with costs attached to each option
  3. 03Waterproof then ponding test then screed and tiling
  4. 04Fittings lighting carpentry and handover with access hatches in place
  • Ask where the existing soil stack sits and whether your layout needs it moved
  • Confirm the waterproofing will be ponding tested before tiling starts
  • Check that niches recesses and vanity sizes are set out before plaster
  • Get the tile and fitting schedule in writing with quantities against each room

The catch here is that skipping a step never saves anything, it only moves the cost later, and the common failure is fittings arriving on site before the plumbing positions are frozen, which pushes the plumber into improvising and leaves you with a mixer at the wrong height or a drain that does not sit under the fall. Dental Clinic Interior project in Kolkata is an example of that category of work in this belt, and Residential Building Project in Salt Lake is another.

When a different kind of provider suits you better

If what you want is one bathroom refreshed with the WC, basin and shower staying exactly where they are, new tiles, a new vanity and new fittings, then a good contractor working from a simple layout will do that well and you will pay less for it than for a designed scheme, and there is no sense pretending otherwise. The same holds if you have finalised everything yourself and only need somebody to execute it. A studio like ours earns its fee when the room has a real problem in it, a layout that does not work, a shaft in the wrong place, a flat where several bathrooms and a kitchen are being reworked together, or a rebuild going through sanction. If none of that applies, hire the contractor, and keep the budget for the rooms that need the thinking.

Getting your own en-suite planned properly

The rest of the home tends to arrive along with the bedroom and the bathroom, so it is worth reading this alongside our notes on Foyer and Entrance Lobby Design for a Salt Lake Home and on Home Gym Design in a Salt Lake House, and if you are planning a commercial wet area rather than a domestic one, Salon Interiors in Salt Lake: Wet Points, Mirrors and Footfall deals with the same problems at a different scale. You can see the wider body of work on our Salt Lake area page and how we approach interior design across Salt Lake, and at the end of the day the only way to know what your own en-suite can become is to put the existing plan on the table, so bring the floor plan and photographs of the bathroom as it stands when you get in touch, and Sumana Kumar and the team will tell you what the room can and cannot be made to do.

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